/** * Copyright (c) Facebook, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @noflow * @nolint * @providesModule ReactNativeRenderer-dev * @preventMunge * @generated SignedSource<> */ 'use strict'; if (__DEV__) { (function() { 'use strict'; /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ if ( typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === 'function' ) { __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); } "use strict"; var React = require("react"); require("react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore"); var ReactNativePrivateInterface = require("react-native/Libraries/ReactPrivate/ReactNativePrivateInterface"); var Scheduler = require("scheduler"); var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // by calls to these methods by a Babel plugin. // // In PROD (or in packages without access to React internals), // they are left as they are instead. function warn(format) { { { for ( var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++ ) { args[_key - 1] = arguments[_key]; } printWarning("warn", format, args); } } } function error(format) { { { for ( var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++ ) { args[_key2 - 1] = arguments[_key2]; } printWarning("error", format, args); } } } function printWarning(level, format, args) { // When changing this logic, you might want to also // update consoleWithStackDev.www.js as well. { var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame; var stack = ReactDebugCurrentFrame.getStackAddendum(); if (stack !== "") { format += "%s"; args = args.concat([stack]); } // eslint-disable-next-line react-internal/safe-string-coercion var argsWithFormat = args.map(function(item) { return String(item); }); // Careful: RN currently depends on this prefix argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it // breaks IE9: https://github.com/facebook/react/issues/13610 // eslint-disable-next-line react-internal/no-production-logging Function.prototype.apply.call(console[level], console, argsWithFormat); } } function invokeGuardedCallbackProd(name, func, context, a, b, c, d, e, f) { var funcArgs = Array.prototype.slice.call(arguments, 3); try { func.apply(context, funcArgs); } catch (error) { this.onError(error); } } var invokeGuardedCallbackImpl = invokeGuardedCallbackProd; { // In DEV mode, we swap out invokeGuardedCallback for a special version // that plays more nicely with the browser's DevTools. The idea is to preserve // "Pause on exceptions" behavior. Because React wraps all user-provided // functions in invokeGuardedCallback, and the production version of // invokeGuardedCallback uses a try-catch, all user exceptions are treated // like caught exceptions, and the DevTools won't pause unless the developer // takes the extra step of enabling pause on caught exceptions. This is // unintuitive, though, because even though React has caught the error, from // the developer's perspective, the error is uncaught. // // To preserve the expected "Pause on exceptions" behavior, we don't use a // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake // DOM node, and call the user-provided callback from inside an event handler // for that fake event. If the callback throws, the error is "captured" using // a global event handler. But because the error happens in a different // event loop context, it does not interrupt the normal program flow. // Effectively, this gives us try-catch behavior without actually using // try-catch. Neat! // Check that the browser supports the APIs we need to implement our special // DEV version of invokeGuardedCallback if ( typeof window !== "undefined" && typeof window.dispatchEvent === "function" && typeof document !== "undefined" && typeof document.createEvent === "function" ) { var fakeNode = document.createElement("react"); invokeGuardedCallbackImpl = function invokeGuardedCallbackDev( name, func, context, a, b, c, d, e, f ) { // If document doesn't exist we know for sure we will crash in this method // when we call document.createEvent(). However this can cause confusing // errors: https://github.com/facebook/create-react-app/issues/3482 // So we preemptively throw with a better message instead. if (typeof document === "undefined" || document === null) { throw new Error( "The `document` global was defined when React was initialized, but is not " + "defined anymore. This can happen in a test environment if a component " + "schedules an update from an asynchronous callback, but the test has already " + "finished running. To solve this, you can either unmount the component at " + "the end of your test (and ensure that any asynchronous operations get " + "canceled in `componentWillUnmount`), or you can change the test itself " + "to be asynchronous." ); } var evt = document.createEvent("Event"); var didCall = false; // Keeps track of whether the user-provided callback threw an error. We // set this to true at the beginning, then set it to false right after // calling the function. If the function errors, `didError` will never be // set to false. This strategy works even if the browser is flaky and // fails to call our global error handler, because it doesn't rely on // the error event at all. var didError = true; // Keeps track of the value of window.event so that we can reset it // during the callback to let user code access window.event in the // browsers that support it. var windowEvent = window.event; // Keeps track of the descriptor of window.event to restore it after event // dispatching: https://github.com/facebook/react/issues/13688 var windowEventDescriptor = Object.getOwnPropertyDescriptor( window, "event" ); function restoreAfterDispatch() { // We immediately remove the callback from event listeners so that // nested `invokeGuardedCallback` calls do not clash. Otherwise, a // nested call would trigger the fake event handlers of any call higher // in the stack. fakeNode.removeEventListener(evtType, callCallback, false); // We check for window.hasOwnProperty('event') to prevent the // window.event assignment in both IE <= 10 as they throw an error // "Member not found" in strict mode, and in Firefox which does not // support window.event. if ( typeof window.event !== "undefined" && window.hasOwnProperty("event") ) { window.event = windowEvent; } } // Create an event handler for our fake event. We will synchronously // dispatch our fake event using `dispatchEvent`. Inside the handler, we // call the user-provided callback. var funcArgs = Array.prototype.slice.call(arguments, 3); function callCallback() { didCall = true; restoreAfterDispatch(); func.apply(context, funcArgs); didError = false; } // Create a global error event handler. We use this to capture the value // that was thrown. It's possible that this error handler will fire more // than once; for example, if non-React code also calls `dispatchEvent` // and a handler for that event throws. We should be resilient to most of // those cases. Even if our error event handler fires more than once, the // last error event is always used. If the callback actually does error, // we know that the last error event is the correct one, because it's not // possible for anything else to have happened in between our callback // erroring and the code that follows the `dispatchEvent` call below. If // the callback doesn't error, but the error event was fired, we know to // ignore it because `didError` will be false, as described above. var error; // Use this to track whether the error event is ever called. var didSetError = false; var isCrossOriginError = false; function handleWindowError(event) { error = event.error; didSetError = true; if (error === null && event.colno === 0 && event.lineno === 0) { isCrossOriginError = true; } if (event.defaultPrevented) { // Some other error handler has prevented default. // Browsers silence the error report if this happens. // We'll remember this to later decide whether to log it or not. if (error != null && typeof error === "object") { try { error._suppressLogging = true; } catch (inner) { // Ignore. } } } } // Create a fake event type. var evtType = "react-" + (name ? name : "invokeguardedcallback"); // Attach our event handlers window.addEventListener("error", handleWindowError); fakeNode.addEventListener(evtType, callCallback, false); // Synchronously dispatch our fake event. If the user-provided function // errors, it will trigger our global error handler. evt.initEvent(evtType, false, false); fakeNode.dispatchEvent(evt); if (windowEventDescriptor) { Object.defineProperty(window, "event", windowEventDescriptor); } if (didCall && didError) { if (!didSetError) { // The callback errored, but the error event never fired. // eslint-disable-next-line react-internal/prod-error-codes error = new Error( "An error was thrown inside one of your components, but React " + "doesn't know what it was. This is likely due to browser " + 'flakiness. React does its best to preserve the "Pause on ' + 'exceptions" behavior of the DevTools, which requires some ' + "DEV-mode only tricks. It's possible that these don't work in " + "your browser. Try triggering the error in production mode, " + "or switching to a modern browser. If you suspect that this is " + "actually an issue with React, please file an issue." ); } else if (isCrossOriginError) { // eslint-disable-next-line react-internal/prod-error-codes error = new Error( "A cross-origin error was thrown. React doesn't have access to " + "the actual error object in development. " + "See https://reactjs.org/link/crossorigin-error for more information." ); } this.onError(error); } // Remove our event listeners window.removeEventListener("error", handleWindowError); if (!didCall) { // Something went really wrong, and our event was not dispatched. // https://github.com/facebook/react/issues/16734 // https://github.com/facebook/react/issues/16585 // Fall back to the production implementation. restoreAfterDispatch(); return invokeGuardedCallbackProd.apply(this, arguments); } }; } } var invokeGuardedCallbackImpl$1 = invokeGuardedCallbackImpl; var hasError = false; var caughtError = null; // Used by event system to capture/rethrow the first error. var hasRethrowError = false; var rethrowError = null; var reporter = { onError: function(error) { hasError = true; caughtError = error; } }; /** * Call a function while guarding against errors that happens within it. * Returns an error if it throws, otherwise null. * * In production, this is implemented using a try-catch. The reason we don't * use a try-catch directly is so that we can swap out a different * implementation in DEV mode. * * @param {String} name of the guard to use for logging or debugging * @param {Function} func The function to invoke * @param {*} context The context to use when calling the function * @param {...*} args Arguments for function */ function invokeGuardedCallback(name, func, context, a, b, c, d, e, f) { hasError = false; caughtError = null; invokeGuardedCallbackImpl$1.apply(reporter, arguments); } /** * Same as invokeGuardedCallback, but instead of returning an error, it stores * it in a global so it can be rethrown by `rethrowCaughtError` later. * TODO: See if caughtError and rethrowError can be unified. * * @param {String} name of the guard to use for logging or debugging * @param {Function} func The function to invoke * @param {*} context The context to use when calling the function * @param {...*} args Arguments for function */ function invokeGuardedCallbackAndCatchFirstError( name, func, context, a, b, c, d, e, f ) { invokeGuardedCallback.apply(this, arguments); if (hasError) { var error = clearCaughtError(); if (!hasRethrowError) { hasRethrowError = true; rethrowError = error; } } } /** * During execution of guarded functions we will capture the first error which * we will rethrow to be handled by the top level error handler. */ function rethrowCaughtError() { if (hasRethrowError) { var error = rethrowError; hasRethrowError = false; rethrowError = null; throw error; } } function hasCaughtError() { return hasError; } function clearCaughtError() { if (hasError) { var error = caughtError; hasError = false; caughtError = null; return error; } else { throw new Error( "clearCaughtError was called but no error was captured. This error " + "is likely caused by a bug in React. Please file an issue." ); } } var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare function isArray(a) { return isArrayImpl(a); } var getFiberCurrentPropsFromNode = null; var getInstanceFromNode = null; var getNodeFromInstance = null; function setComponentTree( getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl ) { getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl; getInstanceFromNode = getInstanceFromNodeImpl; getNodeFromInstance = getNodeFromInstanceImpl; { if (!getNodeFromInstance || !getInstanceFromNode) { error( "EventPluginUtils.setComponentTree(...): Injected " + "module is missing getNodeFromInstance or getInstanceFromNode." ); } } } var validateEventDispatches; { validateEventDispatches = function(event) { var dispatchListeners = event._dispatchListeners; var dispatchInstances = event._dispatchInstances; var listenersIsArr = isArray(dispatchListeners); var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0; var instancesIsArr = isArray(dispatchInstances); var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0; if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) { error("EventPluginUtils: Invalid `event`."); } }; } /** * Dispatch the event to the listener. * @param {SyntheticEvent} event SyntheticEvent to handle * @param {function} listener Application-level callback * @param {*} inst Internal component instance */ function executeDispatch(event, listener, inst) { var type = event.type || "unknown-event"; event.currentTarget = getNodeFromInstance(inst); invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event); event.currentTarget = null; } /** * Standard/simple iteration through an event's collected dispatches. */ function executeDispatchesInOrder(event) { var dispatchListeners = event._dispatchListeners; var dispatchInstances = event._dispatchInstances; { validateEventDispatches(event); } if (isArray(dispatchListeners)) { for (var i = 0; i < dispatchListeners.length; i++) { if (event.isPropagationStopped()) { break; } // Listeners and Instances are two parallel arrays that are always in sync. executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); } } else if (dispatchListeners) { executeDispatch(event, dispatchListeners, dispatchInstances); } event._dispatchListeners = null; event._dispatchInstances = null; } /** * Standard/simple iteration through an event's collected dispatches, but stops * at the first dispatch execution returning true, and returns that id. * * @return {?string} id of the first dispatch execution who's listener returns * true, or null if no listener returned true. */ function executeDispatchesInOrderStopAtTrueImpl(event) { var dispatchListeners = event._dispatchListeners; var dispatchInstances = event._dispatchInstances; { validateEventDispatches(event); } if (isArray(dispatchListeners)) { for (var i = 0; i < dispatchListeners.length; i++) { if (event.isPropagationStopped()) { break; } // Listeners and Instances are two parallel arrays that are always in sync. if (dispatchListeners[i](event, dispatchInstances[i])) { return dispatchInstances[i]; } } } else if (dispatchListeners) { if (dispatchListeners(event, dispatchInstances)) { return dispatchInstances; } } return null; } /** * @see executeDispatchesInOrderStopAtTrueImpl */ function executeDispatchesInOrderStopAtTrue(event) { var ret = executeDispatchesInOrderStopAtTrueImpl(event); event._dispatchInstances = null; event._dispatchListeners = null; return ret; } /** * Execution of a "direct" dispatch - there must be at most one dispatch * accumulated on the event or it is considered an error. It doesn't really make * sense for an event with multiple dispatches (bubbled) to keep track of the * return values at each dispatch execution, but it does tend to make sense when * dealing with "direct" dispatches. * * @return {*} The return value of executing the single dispatch. */ function executeDirectDispatch(event) { { validateEventDispatches(event); } var dispatchListener = event._dispatchListeners; var dispatchInstance = event._dispatchInstances; if (isArray(dispatchListener)) { throw new Error("executeDirectDispatch(...): Invalid `event`."); } event.currentTarget = dispatchListener ? getNodeFromInstance(dispatchInstance) : null; var res = dispatchListener ? dispatchListener(event) : null; event.currentTarget = null; event._dispatchListeners = null; event._dispatchInstances = null; return res; } /** * @param {SyntheticEvent} event * @return {boolean} True iff number of dispatches accumulated is greater than 0. */ function hasDispatches(event) { return !!event._dispatchListeners; } var assign = Object.assign; var EVENT_POOL_SIZE = 10; /** * @interface Event * @see http://www.w3.org/TR/DOM-Level-3-Events/ */ var EventInterface = { type: null, target: null, // currentTarget is set when dispatching; no use in copying it here currentTarget: function() { return null; }, eventPhase: null, bubbles: null, cancelable: null, timeStamp: function(event) { return event.timeStamp || Date.now(); }, defaultPrevented: null, isTrusted: null }; function functionThatReturnsTrue() { return true; } function functionThatReturnsFalse() { return false; } /** * Synthetic events are dispatched by event plugins, typically in response to a * top-level event delegation handler. * * These systems should generally use pooling to reduce the frequency of garbage * collection. The system should check `isPersistent` to determine whether the * event should be released into the pool after being dispatched. Users that * need a persisted event should invoke `persist`. * * Synthetic events (and subclasses) implement the DOM Level 3 Events API by * normalizing browser quirks. Subclasses do not necessarily have to implement a * DOM interface; custom application-specific events can also subclass this. * * @param {object} dispatchConfig Configuration used to dispatch this event. * @param {*} targetInst Marker identifying the event target. * @param {object} nativeEvent Native browser event. * @param {DOMEventTarget} nativeEventTarget Target node. */ function SyntheticEvent( dispatchConfig, targetInst, nativeEvent, nativeEventTarget ) { { // these have a getter/setter for warnings delete this.nativeEvent; delete this.preventDefault; delete this.stopPropagation; delete this.isDefaultPrevented; delete this.isPropagationStopped; } this.dispatchConfig = dispatchConfig; this._targetInst = targetInst; this.nativeEvent = nativeEvent; this._dispatchListeners = null; this._dispatchInstances = null; var Interface = this.constructor.Interface; for (var propName in Interface) { if (!Interface.hasOwnProperty(propName)) { continue; } { delete this[propName]; // this has a getter/setter for warnings } var normalize = Interface[propName]; if (normalize) { this[propName] = normalize(nativeEvent); } else { if (propName === "target") { this.target = nativeEventTarget; } else { this[propName] = nativeEvent[propName]; } } } var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false; if (defaultPrevented) { this.isDefaultPrevented = functionThatReturnsTrue; } else { this.isDefaultPrevented = functionThatReturnsFalse; } this.isPropagationStopped = functionThatReturnsFalse; return this; } assign(SyntheticEvent.prototype, { preventDefault: function() { this.defaultPrevented = true; var event = this.nativeEvent; if (!event) { return; } if (event.preventDefault) { event.preventDefault(); } else if (typeof event.returnValue !== "unknown") { event.returnValue = false; } this.isDefaultPrevented = functionThatReturnsTrue; }, stopPropagation: function() { var event = this.nativeEvent; if (!event) { return; } if (event.stopPropagation) { event.stopPropagation(); } else if (typeof event.cancelBubble !== "unknown") { // The ChangeEventPlugin registers a "propertychange" event for // IE. This event does not support bubbling or cancelling, and // any references to cancelBubble throw "Member not found". A // typeof check of "unknown" circumvents this issue (and is also // IE specific). event.cancelBubble = true; } this.isPropagationStopped = functionThatReturnsTrue; }, /** * We release all dispatched `SyntheticEvent`s after each event loop, adding * them back into the pool. This allows a way to hold onto a reference that * won't be added back into the pool. */ persist: function() { this.isPersistent = functionThatReturnsTrue; }, /** * Checks if this event should be released back into the pool. * * @return {boolean} True if this should not be released, false otherwise. */ isPersistent: functionThatReturnsFalse, /** * `PooledClass` looks for `destructor` on each instance it releases. */ destructor: function() { var Interface = this.constructor.Interface; for (var propName in Interface) { { Object.defineProperty( this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]) ); } } this.dispatchConfig = null; this._targetInst = null; this.nativeEvent = null; this.isDefaultPrevented = functionThatReturnsFalse; this.isPropagationStopped = functionThatReturnsFalse; this._dispatchListeners = null; this._dispatchInstances = null; { Object.defineProperty( this, "nativeEvent", getPooledWarningPropertyDefinition("nativeEvent", null) ); Object.defineProperty( this, "isDefaultPrevented", getPooledWarningPropertyDefinition( "isDefaultPrevented", functionThatReturnsFalse ) ); Object.defineProperty( this, "isPropagationStopped", getPooledWarningPropertyDefinition( "isPropagationStopped", functionThatReturnsFalse ) ); Object.defineProperty( this, "preventDefault", getPooledWarningPropertyDefinition("preventDefault", function() {}) ); Object.defineProperty( this, "stopPropagation", getPooledWarningPropertyDefinition("stopPropagation", function() {}) ); } } }); SyntheticEvent.Interface = EventInterface; /** * Helper to reduce boilerplate when creating subclasses. */ SyntheticEvent.extend = function(Interface) { var Super = this; var E = function() {}; E.prototype = Super.prototype; var prototype = new E(); function Class() { return Super.apply(this, arguments); } assign(prototype, Class.prototype); Class.prototype = prototype; Class.prototype.constructor = Class; Class.Interface = assign({}, Super.Interface, Interface); Class.extend = Super.extend; addEventPoolingTo(Class); return Class; }; addEventPoolingTo(SyntheticEvent); /** * Helper to nullify syntheticEvent instance properties when destructing * * @param {String} propName * @param {?object} getVal * @return {object} defineProperty object */ function getPooledWarningPropertyDefinition(propName, getVal) { function set(val) { var action = isFunction ? "setting the method" : "setting the property"; warn(action, "This is effectively a no-op"); return val; } function get() { var action = isFunction ? "accessing the method" : "accessing the property"; var result = isFunction ? "This is a no-op function" : "This is set to null"; warn(action, result); return getVal; } function warn(action, result) { { error( "This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + "If you must keep the original synthetic event around, use event.persist(). " + "See https://reactjs.org/link/event-pooling for more information.", action, propName, result ); } } var isFunction = typeof getVal === "function"; return { configurable: true, set: set, get: get }; } function createOrGetPooledEvent( dispatchConfig, targetInst, nativeEvent, nativeInst ) { var EventConstructor = this; if (EventConstructor.eventPool.length) { var instance = EventConstructor.eventPool.pop(); EventConstructor.call( instance, dispatchConfig, targetInst, nativeEvent, nativeInst ); return instance; } return new EventConstructor( dispatchConfig, targetInst, nativeEvent, nativeInst ); } function releasePooledEvent(event) { var EventConstructor = this; if (!(event instanceof EventConstructor)) { throw new Error( "Trying to release an event instance into a pool of a different type." ); } event.destructor(); if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { EventConstructor.eventPool.push(event); } } function addEventPoolingTo(EventConstructor) { EventConstructor.getPooled = createOrGetPooledEvent; EventConstructor.eventPool = []; EventConstructor.release = releasePooledEvent; } /** * `touchHistory` isn't actually on the native event, but putting it in the * interface will ensure that it is cleaned up when pooled/destroyed. The * `ResponderEventPlugin` will populate it appropriately. */ var ResponderSyntheticEvent = SyntheticEvent.extend({ touchHistory: function(nativeEvent) { return null; // Actually doesn't even look at the native event. } }); var TOP_TOUCH_START = "topTouchStart"; var TOP_TOUCH_MOVE = "topTouchMove"; var TOP_TOUCH_END = "topTouchEnd"; var TOP_TOUCH_CANCEL = "topTouchCancel"; var TOP_SCROLL = "topScroll"; var TOP_SELECTION_CHANGE = "topSelectionChange"; function isStartish(topLevelType) { return topLevelType === TOP_TOUCH_START; } function isMoveish(topLevelType) { return topLevelType === TOP_TOUCH_MOVE; } function isEndish(topLevelType) { return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL; } var startDependencies = [TOP_TOUCH_START]; var moveDependencies = [TOP_TOUCH_MOVE]; var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END]; /** * Tracks the position and time of each active touch by `touch.identifier`. We * should typically only see IDs in the range of 1-20 because IDs get recycled * when touches end and start again. */ var MAX_TOUCH_BANK = 20; var touchBank = []; var touchHistory = { touchBank: touchBank, numberActiveTouches: 0, // If there is only one active touch, we remember its location. This prevents // us having to loop through all of the touches all the time in the most // common case. indexOfSingleActiveTouch: -1, mostRecentTimeStamp: 0 }; function timestampForTouch(touch) { // The legacy internal implementation provides "timeStamp", which has been // renamed to "timestamp". Let both work for now while we iron it out // TODO (evv): rename timeStamp to timestamp in internal code return touch.timeStamp || touch.timestamp; } /** * TODO: Instead of making gestures recompute filtered velocity, we could * include a built in velocity computation that can be reused globally. */ function createTouchRecord(touch) { return { touchActive: true, startPageX: touch.pageX, startPageY: touch.pageY, startTimeStamp: timestampForTouch(touch), currentPageX: touch.pageX, currentPageY: touch.pageY, currentTimeStamp: timestampForTouch(touch), previousPageX: touch.pageX, previousPageY: touch.pageY, previousTimeStamp: timestampForTouch(touch) }; } function resetTouchRecord(touchRecord, touch) { touchRecord.touchActive = true; touchRecord.startPageX = touch.pageX; touchRecord.startPageY = touch.pageY; touchRecord.startTimeStamp = timestampForTouch(touch); touchRecord.currentPageX = touch.pageX; touchRecord.currentPageY = touch.pageY; touchRecord.currentTimeStamp = timestampForTouch(touch); touchRecord.previousPageX = touch.pageX; touchRecord.previousPageY = touch.pageY; touchRecord.previousTimeStamp = timestampForTouch(touch); } function getTouchIdentifier(_ref) { var identifier = _ref.identifier; if (identifier == null) { throw new Error("Touch object is missing identifier."); } { if (identifier > MAX_TOUCH_BANK) { error( "Touch identifier %s is greater than maximum supported %s which causes " + "performance issues backfilling array locations for all of the indices.", identifier, MAX_TOUCH_BANK ); } } return identifier; } function recordTouchStart(touch) { var identifier = getTouchIdentifier(touch); var touchRecord = touchBank[identifier]; if (touchRecord) { resetTouchRecord(touchRecord, touch); } else { touchBank[identifier] = createTouchRecord(touch); } touchHistory.mostRecentTimeStamp = timestampForTouch(touch); } function recordTouchMove(touch) { var touchRecord = touchBank[getTouchIdentifier(touch)]; if (touchRecord) { touchRecord.touchActive = true; touchRecord.previousPageX = touchRecord.currentPageX; touchRecord.previousPageY = touchRecord.currentPageY; touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; touchRecord.currentPageX = touch.pageX; touchRecord.currentPageY = touch.pageY; touchRecord.currentTimeStamp = timestampForTouch(touch); touchHistory.mostRecentTimeStamp = timestampForTouch(touch); } else { { warn( "Cannot record touch move without a touch start.\n" + "Touch Move: %s\n" + "Touch Bank: %s", printTouch(touch), printTouchBank() ); } } } function recordTouchEnd(touch) { var touchRecord = touchBank[getTouchIdentifier(touch)]; if (touchRecord) { touchRecord.touchActive = false; touchRecord.previousPageX = touchRecord.currentPageX; touchRecord.previousPageY = touchRecord.currentPageY; touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; touchRecord.currentPageX = touch.pageX; touchRecord.currentPageY = touch.pageY; touchRecord.currentTimeStamp = timestampForTouch(touch); touchHistory.mostRecentTimeStamp = timestampForTouch(touch); } else { { warn( "Cannot record touch end without a touch start.\n" + "Touch End: %s\n" + "Touch Bank: %s", printTouch(touch), printTouchBank() ); } } } function printTouch(touch) { return JSON.stringify({ identifier: touch.identifier, pageX: touch.pageX, pageY: touch.pageY, timestamp: timestampForTouch(touch) }); } function printTouchBank() { var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK)); if (touchBank.length > MAX_TOUCH_BANK) { printed += " (original size: " + touchBank.length + ")"; } return printed; } var instrumentationCallback; var ResponderTouchHistoryStore = { /** * Registers a listener which can be used to instrument every touch event. */ instrument: function(callback) { instrumentationCallback = callback; }, recordTouchTrack: function(topLevelType, nativeEvent) { if (instrumentationCallback != null) { instrumentationCallback(topLevelType, nativeEvent); } if (isMoveish(topLevelType)) { nativeEvent.changedTouches.forEach(recordTouchMove); } else if (isStartish(topLevelType)) { nativeEvent.changedTouches.forEach(recordTouchStart); touchHistory.numberActiveTouches = nativeEvent.touches.length; if (touchHistory.numberActiveTouches === 1) { touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier; } } else if (isEndish(topLevelType)) { nativeEvent.changedTouches.forEach(recordTouchEnd); touchHistory.numberActiveTouches = nativeEvent.touches.length; if (touchHistory.numberActiveTouches === 1) { for (var i = 0; i < touchBank.length; i++) { var touchTrackToCheck = touchBank[i]; if (touchTrackToCheck != null && touchTrackToCheck.touchActive) { touchHistory.indexOfSingleActiveTouch = i; break; } } { var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch]; if (activeRecord == null || !activeRecord.touchActive) { error("Cannot find single active touch."); } } } } }, touchHistory: touchHistory }; /** * Accumulates items that must not be null or undefined. * * This is used to conserve memory by avoiding array allocations. * * @return {*|array<*>} An accumulation of items. */ function accumulate(current, next) { if (next == null) { throw new Error( "accumulate(...): Accumulated items must not be null or undefined." ); } if (current == null) { return next; } // Both are not empty. Warning: Never call x.concat(y) when you are not // certain that x is an Array (x could be a string with concat method). if (isArray(current)) { return current.concat(next); } if (isArray(next)) { return [current].concat(next); } return [current, next]; } /** * Accumulates items that must not be null or undefined into the first one. This * is used to conserve memory by avoiding array allocations, and thus sacrifices * API cleanness. Since `current` can be null before being passed in and not * null after this function, make sure to assign it back to `current`: * * `a = accumulateInto(a, b);` * * This API should be sparingly used. Try `accumulate` for something cleaner. * * @return {*|array<*>} An accumulation of items. */ function accumulateInto(current, next) { if (next == null) { throw new Error( "accumulateInto(...): Accumulated items must not be null or undefined." ); } if (current == null) { return next; } // Both are not empty. Warning: Never call x.concat(y) when you are not // certain that x is an Array (x could be a string with concat method). if (isArray(current)) { if (isArray(next)) { current.push.apply(current, next); return current; } current.push(next); return current; } if (isArray(next)) { // A bit too dangerous to mutate `next`. return [current].concat(next); } return [current, next]; } /** * @param {array} arr an "accumulation" of items which is either an Array or * a single item. Useful when paired with the `accumulate` module. This is a * simple utility that allows us to reason about a collection of items, but * handling the case when there is exactly one item (and we do not need to * allocate an array). * @param {function} cb Callback invoked with each element or a collection. * @param {?} [scope] Scope used as `this` in a callback. */ function forEachAccumulated(arr, cb, scope) { if (Array.isArray(arr)) { arr.forEach(cb, scope); } else if (arr) { cb.call(scope, arr); } } var FunctionComponent = 0; var ClassComponent = 1; var IndeterminateComponent = 2; // Before we know whether it is function or class var HostRoot = 3; // Root of a host tree. Could be nested inside another node. var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. var HostComponent = 5; var HostText = 6; var Fragment = 7; var Mode = 8; var ContextConsumer = 9; var ContextProvider = 10; var ForwardRef = 11; var Profiler = 12; var SuspenseComponent = 13; var MemoComponent = 14; var SimpleMemoComponent = 15; var LazyComponent = 16; var IncompleteClassComponent = 17; var DehydratedFragment = 18; var SuspenseListComponent = 19; var ScopeComponent = 21; var OffscreenComponent = 22; var LegacyHiddenComponent = 23; var CacheComponent = 24; var TracingMarkerComponent = 25; /** * Instance of element that should respond to touch/move types of interactions, * as indicated explicitly by relevant callbacks. */ var responderInst = null; /** * Count of current touches. A textInput should become responder iff the * selection changes while there is a touch on the screen. */ var trackedTouchCount = 0; var changeResponder = function(nextResponderInst, blockHostResponder) { var oldResponderInst = responderInst; responderInst = nextResponderInst; if (ResponderEventPlugin.GlobalResponderHandler !== null) { ResponderEventPlugin.GlobalResponderHandler.onChange( oldResponderInst, nextResponderInst, blockHostResponder ); } }; var eventTypes = { /** * On a `touchStart`/`mouseDown`, is it desired that this element become the * responder? */ startShouldSetResponder: { phasedRegistrationNames: { bubbled: "onStartShouldSetResponder", captured: "onStartShouldSetResponderCapture" }, dependencies: startDependencies }, /** * On a `scroll`, is it desired that this element become the responder? This * is usually not needed, but should be used to retroactively infer that a * `touchStart` had occurred during momentum scroll. During a momentum scroll, * a touch start will be immediately followed by a scroll event if the view is * currently scrolling. * * TODO: This shouldn't bubble. */ scrollShouldSetResponder: { phasedRegistrationNames: { bubbled: "onScrollShouldSetResponder", captured: "onScrollShouldSetResponderCapture" }, dependencies: [TOP_SCROLL] }, /** * On text selection change, should this element become the responder? This * is needed for text inputs or other views with native selection, so the * JS view can claim the responder. * * TODO: This shouldn't bubble. */ selectionChangeShouldSetResponder: { phasedRegistrationNames: { bubbled: "onSelectionChangeShouldSetResponder", captured: "onSelectionChangeShouldSetResponderCapture" }, dependencies: [TOP_SELECTION_CHANGE] }, /** * On a `touchMove`/`mouseMove`, is it desired that this element become the * responder? */ moveShouldSetResponder: { phasedRegistrationNames: { bubbled: "onMoveShouldSetResponder", captured: "onMoveShouldSetResponderCapture" }, dependencies: moveDependencies }, /** * Direct responder events dispatched directly to responder. Do not bubble. */ responderStart: { registrationName: "onResponderStart", dependencies: startDependencies }, responderMove: { registrationName: "onResponderMove", dependencies: moveDependencies }, responderEnd: { registrationName: "onResponderEnd", dependencies: endDependencies }, responderRelease: { registrationName: "onResponderRelease", dependencies: endDependencies }, responderTerminationRequest: { registrationName: "onResponderTerminationRequest", dependencies: [] }, responderGrant: { registrationName: "onResponderGrant", dependencies: [] }, responderReject: { registrationName: "onResponderReject", dependencies: [] }, responderTerminate: { registrationName: "onResponderTerminate", dependencies: [] } }; // Start of inline: the below functions were inlined from // EventPropagator.js, as they deviated from ReactDOM's newer // implementations. function getParent(inst) { do { inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. // That is depending on if we want nested subtrees (layers) to bubble // events to their parent. We could also go through parentNode on the // host node but that wouldn't work for React Native and doesn't let us // do the portal feature. } while (inst && inst.tag !== HostComponent); if (inst) { return inst; } return null; } /** * Return the lowest common ancestor of A and B, or null if they are in * different trees. */ function getLowestCommonAncestor(instA, instB) { var depthA = 0; for (var tempA = instA; tempA; tempA = getParent(tempA)) { depthA++; } var depthB = 0; for (var tempB = instB; tempB; tempB = getParent(tempB)) { depthB++; } // If A is deeper, crawl up. while (depthA - depthB > 0) { instA = getParent(instA); depthA--; } // If B is deeper, crawl up. while (depthB - depthA > 0) { instB = getParent(instB); depthB--; } // Walk in lockstep until we find a match. var depth = depthA; while (depth--) { if (instA === instB || instA === instB.alternate) { return instA; } instA = getParent(instA); instB = getParent(instB); } return null; } /** * Return if A is an ancestor of B. */ function isAncestor(instA, instB) { while (instB) { if (instA === instB || instA === instB.alternate) { return true; } instB = getParent(instB); } return false; } /** * Simulates the traversal of a two-phase, capture/bubble event dispatch. */ function traverseTwoPhase(inst, fn, arg) { var path = []; while (inst) { path.push(inst); inst = getParent(inst); } var i; for (i = path.length; i-- > 0; ) { fn(path[i], "captured", arg); } for (i = 0; i < path.length; i++) { fn(path[i], "bubbled", arg); } } function getListener(inst, registrationName) { var stateNode = inst.stateNode; if (stateNode === null) { // Work in progress (ex: onload events in incremental mode). return null; } var props = getFiberCurrentPropsFromNode(stateNode); if (props === null) { // Work in progress. return null; } var listener = props[registrationName]; if (listener && typeof listener !== "function") { throw new Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." ); } return listener; } function listenerAtPhase(inst, event, propagationPhase) { var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; return getListener(inst, registrationName); } function accumulateDirectionalDispatches(inst, phase, event) { { if (!inst) { error("Dispatching inst must not be null"); } } var listener = listenerAtPhase(inst, event, phase); if (listener) { event._dispatchListeners = accumulateInto( event._dispatchListeners, listener ); event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); } } /** * Accumulates without regard to direction, does not look for phased * registration names. Same as `accumulateDirectDispatchesSingle` but without * requiring that the `dispatchMarker` be the same as the dispatched ID. */ function accumulateDispatches(inst, ignoredDirection, event) { if (inst && event && event.dispatchConfig.registrationName) { var registrationName = event.dispatchConfig.registrationName; var listener = getListener(inst, registrationName); if (listener) { event._dispatchListeners = accumulateInto( event._dispatchListeners, listener ); event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); } } } /** * Accumulates dispatches on an `SyntheticEvent`, but only for the * `dispatchMarker`. * @param {SyntheticEvent} event */ function accumulateDirectDispatchesSingle(event) { if (event && event.dispatchConfig.registrationName) { accumulateDispatches(event._targetInst, null, event); } } function accumulateDirectDispatches(events) { forEachAccumulated(events, accumulateDirectDispatchesSingle); } function accumulateTwoPhaseDispatchesSingleSkipTarget(event) { if (event && event.dispatchConfig.phasedRegistrationNames) { var targetInst = event._targetInst; var parentInst = targetInst ? getParent(targetInst) : null; traverseTwoPhase(parentInst, accumulateDirectionalDispatches, event); } } function accumulateTwoPhaseDispatchesSkipTarget(events) { forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget); } function accumulateTwoPhaseDispatchesSingle(event) { if (event && event.dispatchConfig.phasedRegistrationNames) { traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event); } } function accumulateTwoPhaseDispatches(events) { forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); } // End of inline /** * * Responder System: * ---------------- * * - A global, solitary "interaction lock" on a view. * - If a node becomes the responder, it should convey visual feedback * immediately to indicate so, either by highlighting or moving accordingly. * - To be the responder means, that touches are exclusively important to that * responder view, and no other view. * - While touches are still occurring, the responder lock can be transferred to * a new view, but only to increasingly "higher" views (meaning ancestors of * the current responder). * * Responder being granted: * ------------------------ * * - Touch starts, moves, and scrolls can cause an ID to become the responder. * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to * the "appropriate place". * - If nothing is currently the responder, the "appropriate place" is the * initiating event's `targetID`. * - If something *is* already the responder, the "appropriate place" is the * first common ancestor of the event target and the current `responderInst`. * - Some negotiation happens: See the timing diagram below. * - Scrolled views automatically become responder. The reasoning is that a * platform scroll view that isn't built on top of the responder system has * began scrolling, and the active responder must now be notified that the * interaction is no longer locked to it - the system has taken over. * * - Responder being released: * As soon as no more touches that *started* inside of descendants of the * *current* responderInst, an `onResponderRelease` event is dispatched to the * current responder, and the responder lock is released. * * TODO: * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that * determines if the responder lock should remain. * - If a view shouldn't "remain" the responder, any active touches should by * default be considered "dead" and do not influence future negotiations or * bubble paths. It should be as if those touches do not exist. * -- For multitouch: Usually a translate-z will choose to "remain" responder * after one out of many touches ended. For translate-y, usually the view * doesn't wish to "remain" responder after one of many touches end. * - Consider building this on top of a `stopPropagation` model similar to * `W3C` events. * - Ensure that `onResponderTerminate` is called on touch cancels, whether or * not `onResponderTerminationRequest` returns `true` or `false`. * */ /* Negotiation Performed +-----------------------+ / \ Process low level events to + Current Responder + wantsResponderID determine who to perform negot-| (if any exists at all) | iation/transition | Otherwise just pass through| -------------------------------+----------------------------+------------------+ Bubble to find first ID | | to return true:wantsResponderID| | | | +-------------+ | | | onTouchStart| | | +------+------+ none | | | return| | +-----------v-------------+true| +------------------------+ | |onStartShouldSetResponder|----->|onResponderStart (cur) |<-----------+ +-----------+-------------+ | +------------------------+ | | | | | +--------+-------+ | returned true for| false:REJECT +-------->|onResponderReject | wantsResponderID | | | +----------------+ | (now attempt | +------------------+-----+ | | handoff) | | onResponder | | +------------------->| TerminationRequest| | | +------------------+-----+ | | | | +----------------+ | true:GRANT +-------->|onResponderGrant| | | +--------+-------+ | +------------------------+ | | | | onResponderTerminate |<-----------+ | +------------------+-----+ | | | | +----------------+ | +-------->|onResponderStart| | | +----------------+ Bubble to find first ID | | to return true:wantsResponderID| | | | +-------------+ | | | onTouchMove | | | +------+------+ none | | | return| | +-----------v-------------+true| +------------------------+ | |onMoveShouldSetResponder |----->|onResponderMove (cur) |<-----------+ +-----------+-------------+ | +------------------------+ | | | | | +--------+-------+ | returned true for| false:REJECT +-------->|onResponderRejec| | wantsResponderID | | | +----------------+ | (now attempt | +------------------+-----+ | | handoff) | | onResponder | | +------------------->| TerminationRequest| | | +------------------+-----+ | | | | +----------------+ | true:GRANT +-------->|onResponderGrant| | | +--------+-------+ | +------------------------+ | | | | onResponderTerminate |<-----------+ | +------------------+-----+ | | | | +----------------+ | +-------->|onResponderMove | | | +----------------+ | | | | Some active touch started| | inside current responder | +------------------------+ | +------------------------->| onResponderEnd | | | | +------------------------+ | +---+---------+ | | | onTouchEnd | | | +---+---------+ | | | | +------------------------+ | +------------------------->| onResponderEnd | | No active touches started| +-----------+------------+ | inside current responder | | | | v | | +------------------------+ | | | onResponderRelease | | | +------------------------+ | | | + + */ /** * A note about event ordering in the `EventPluginRegistry`. * * Suppose plugins are injected in the following order: * * `[R, S, C]` * * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for * `onClick` etc) and `R` is `ResponderEventPlugin`. * * "Deferred-Dispatched Events": * * - The current event plugin system will traverse the list of injected plugins, * in order, and extract events by collecting the plugin's return value of * `extractEvents()`. * - These events that are returned from `extractEvents` are "deferred * dispatched events". * - When returned from `extractEvents`, deferred-dispatched events contain an * "accumulation" of deferred dispatches. * - These deferred dispatches are accumulated/collected before they are * returned, but processed at a later time by the `EventPluginRegistry` (hence the * name deferred). * * In the process of returning their deferred-dispatched events, event plugins * themselves can dispatch events on-demand without returning them from * `extractEvents`. Plugins might want to do this, so that they can use event * dispatching as a tool that helps them decide which events should be extracted * in the first place. * * "On-Demand-Dispatched Events": * * - On-demand-dispatched events are not returned from `extractEvents`. * - On-demand-dispatched events are dispatched during the process of returning * the deferred-dispatched events. * - They should not have side effects. * - They should be avoided, and/or eventually be replaced with another * abstraction that allows event plugins to perform multiple "rounds" of event * extraction. * * Therefore, the sequence of event dispatches becomes: * * - `R`s on-demand events (if any) (dispatched by `R` on-demand) * - `S`s on-demand events (if any) (dispatched by `S` on-demand) * - `C`s on-demand events (if any) (dispatched by `C` on-demand) * - `R`s extracted events (if any) (dispatched by `EventPluginRegistry`) * - `S`s extracted events (if any) (dispatched by `EventPluginRegistry`) * - `C`s extracted events (if any) (dispatched by `EventPluginRegistry`) * * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder` * on-demand dispatch returns `true` (and some other details are satisfied) the * `onResponderGrant` deferred dispatched event is returned from * `extractEvents`. The sequence of dispatch executions in this case * will appear as follows: * * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand) * - `touchStartCapture` (`EventPluginRegistry` dispatches as usual) * - `touchStart` (`EventPluginRegistry` dispatches as usual) * - `responderGrant/Reject` (`EventPluginRegistry` dispatches as usual) */ function setResponderAndExtractTransfer( topLevelType, targetInst, nativeEvent, nativeEventTarget ) { var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder. var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target // (deepest ID) if it happens to be the current responder. The reasoning: // It's strange to get an `onMoveShouldSetResponder` when you're *already* // the responder. var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst; var shouldSetEvent = ResponderSyntheticEvent.getPooled( shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget ); shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; if (skipOverBubbleShouldSetFrom) { accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent); } else { accumulateTwoPhaseDispatches(shouldSetEvent); } var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent); if (!shouldSetEvent.isPersistent()) { shouldSetEvent.constructor.release(shouldSetEvent); } if (!wantsResponderInst || wantsResponderInst === responderInst) { return null; } var extracted; var grantEvent = ResponderSyntheticEvent.getPooled( eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget ); grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(grantEvent); var blockHostResponder = executeDirectDispatch(grantEvent) === true; if (responderInst) { var terminationRequestEvent = ResponderSyntheticEvent.getPooled( eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget ); terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(terminationRequestEvent); var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent); if (!terminationRequestEvent.isPersistent()) { terminationRequestEvent.constructor.release(terminationRequestEvent); } if (shouldSwitch) { var terminateEvent = ResponderSyntheticEvent.getPooled( eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget ); terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(terminateEvent); extracted = accumulate(extracted, [grantEvent, terminateEvent]); changeResponder(wantsResponderInst, blockHostResponder); } else { var rejectEvent = ResponderSyntheticEvent.getPooled( eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget ); rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(rejectEvent); extracted = accumulate(extracted, rejectEvent); } } else { extracted = accumulate(extracted, grantEvent); changeResponder(wantsResponderInst, blockHostResponder); } return extracted; } /** * A transfer is a negotiation between a currently set responder and the next * element to claim responder status. Any start event could trigger a transfer * of responderInst. Any move event could trigger a transfer. * * @param {string} topLevelType Record from `BrowserEventConstants`. * @return {boolean} True if a transfer of responder could possibly occur. */ function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) { return ( topLevelInst && // responderIgnoreScroll: We are trying to migrate away from specifically // tracking native scroll events here and responderIgnoreScroll indicates we // will send topTouchCancel to handle canceling touch events instead ((topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll) || (trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE) || isStartish(topLevelType) || isMoveish(topLevelType)) ); } /** * Returns whether or not this touch end event makes it such that there are no * longer any touches that started inside of the current `responderInst`. * * @param {NativeEvent} nativeEvent Native touch end event. * @return {boolean} Whether or not this touch end event ends the responder. */ function noResponderTouches(nativeEvent) { var touches = nativeEvent.touches; if (!touches || touches.length === 0) { return true; } for (var i = 0; i < touches.length; i++) { var activeTouch = touches[i]; var target = activeTouch.target; if (target !== null && target !== undefined && target !== 0) { // Is the original touch location inside of the current responder? var targetInst = getInstanceFromNode(target); if (isAncestor(responderInst, targetInst)) { return false; } } } return true; } var ResponderEventPlugin = { /* For unit testing only */ _getResponder: function() { return responderInst; }, eventTypes: eventTypes, /** * We must be resilient to `targetInst` being `null` on `touchMove` or * `touchEnd`. On certain platforms, this means that a native scroll has * assumed control and the original touch targets are destroyed. */ extractEvents: function( topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags ) { if (isStartish(topLevelType)) { trackedTouchCount += 1; } else if (isEndish(topLevelType)) { if (trackedTouchCount >= 0) { trackedTouchCount -= 1; } else { { warn( "Ended a touch event which was not counted in `trackedTouchCount`." ); } return null; } } ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent); var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer( topLevelType, targetInst, nativeEvent, nativeEventTarget ) : null; // Responder may or may not have transferred on a new touch start/move. // Regardless, whoever is the responder after any potential transfer, we // direct all touch start/move/ends to them in the form of // `onResponderMove/Start/End`. These will be called for *every* additional // finger that move/start/end, dispatched directly to whoever is the // current responder at that moment, until the responder is "released". // // These multiple individual change touch events are are always bookended // by `onResponderGrant`, and one of // (`onResponderRelease/onResponderTerminate`). var isResponderTouchStart = responderInst && isStartish(topLevelType); var isResponderTouchMove = responderInst && isMoveish(topLevelType); var isResponderTouchEnd = responderInst && isEndish(topLevelType); var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null; if (incrementalTouch) { var gesture = ResponderSyntheticEvent.getPooled( incrementalTouch, responderInst, nativeEvent, nativeEventTarget ); gesture.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(gesture); extracted = accumulate(extracted, gesture); } var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL; var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent); var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null; if (finalTouch) { var finalEvent = ResponderSyntheticEvent.getPooled( finalTouch, responderInst, nativeEvent, nativeEventTarget ); finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; accumulateDirectDispatches(finalEvent); extracted = accumulate(extracted, finalEvent); changeResponder(null); } return extracted; }, GlobalResponderHandler: null, injection: { /** * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler * Object that handles any change in responder. Use this to inject * integration with an existing touch handling system etc. */ injectGlobalResponderHandler: function(GlobalResponderHandler) { ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler; } } }; /** * Injectable ordering of event plugins. */ var eventPluginOrder = null; /** * Injectable mapping from names to event plugin modules. */ var namesToPlugins = {}; /** * Recomputes the plugin list using the injected plugins and plugin ordering. * * @private */ function recomputePluginOrdering() { if (!eventPluginOrder) { // Wait until an `eventPluginOrder` is injected. return; } for (var pluginName in namesToPlugins) { var pluginModule = namesToPlugins[pluginName]; var pluginIndex = eventPluginOrder.indexOf(pluginName); if (pluginIndex <= -1) { throw new Error( "EventPluginRegistry: Cannot inject event plugins that do not exist in " + ("the plugin ordering, `" + pluginName + "`.") ); } if (plugins[pluginIndex]) { continue; } if (!pluginModule.extractEvents) { throw new Error( "EventPluginRegistry: Event plugins must implement an `extractEvents` " + ("method, but `" + pluginName + "` does not.") ); } plugins[pluginIndex] = pluginModule; var publishedEvents = pluginModule.eventTypes; for (var eventName in publishedEvents) { if ( !publishEventForPlugin( publishedEvents[eventName], pluginModule, eventName ) ) { throw new Error( "EventPluginRegistry: Failed to publish event `" + eventName + "` for plugin `" + pluginName + "`." ); } } } } /** * Publishes an event so that it can be dispatched by the supplied plugin. * * @param {object} dispatchConfig Dispatch configuration for the event. * @param {object} PluginModule Plugin publishing the event. * @return {boolean} True if the event was successfully published. * @private */ function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { if (eventNameDispatchConfigs.hasOwnProperty(eventName)) { throw new Error( "EventPluginRegistry: More than one plugin attempted to publish the same " + ("event name, `" + eventName + "`.") ); } eventNameDispatchConfigs[eventName] = dispatchConfig; var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; if (phasedRegistrationNames) { for (var phaseName in phasedRegistrationNames) { if (phasedRegistrationNames.hasOwnProperty(phaseName)) { var phasedRegistrationName = phasedRegistrationNames[phaseName]; publishRegistrationName( phasedRegistrationName, pluginModule, eventName ); } } return true; } else if (dispatchConfig.registrationName) { publishRegistrationName( dispatchConfig.registrationName, pluginModule, eventName ); return true; } return false; } /** * Publishes a registration name that is used to identify dispatched events. * * @param {string} registrationName Registration name to add. * @param {object} PluginModule Plugin publishing the event. * @private */ function publishRegistrationName(registrationName, pluginModule, eventName) { if (registrationNameModules[registrationName]) { throw new Error( "EventPluginRegistry: More than one plugin attempted to publish the same " + ("registration name, `" + registrationName + "`.") ); } registrationNameModules[registrationName] = pluginModule; registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies; { var lowerCasedName = registrationName.toLowerCase(); } } /** * Registers plugins so that they can extract and dispatch events. */ /** * Ordered list of injected plugins. */ var plugins = []; /** * Mapping from event name to dispatch config */ var eventNameDispatchConfigs = {}; /** * Mapping from registration name to plugin module */ var registrationNameModules = {}; /** * Mapping from registration name to event name */ var registrationNameDependencies = {}; /** * Injects an ordering of plugins (by plugin name). This allows the ordering * to be decoupled from injection of the actual plugins so that ordering is * always deterministic regardless of packaging, on-the-fly injection, etc. * * @param {array} InjectedEventPluginOrder * @internal */ function injectEventPluginOrder(injectedEventPluginOrder) { if (eventPluginOrder) { throw new Error( "EventPluginRegistry: Cannot inject event plugin ordering more than " + "once. You are likely trying to load more than one copy of React." ); } // Clone the ordering so it cannot be dynamically mutated. eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); recomputePluginOrdering(); } /** * Injects plugins to be used by plugin event system. The plugin names must be * in the ordering injected by `injectEventPluginOrder`. * * Plugins can be injected as part of page initialization or on-the-fly. * * @param {object} injectedNamesToPlugins Map from names to plugin modules. * @internal */ function injectEventPluginsByName(injectedNamesToPlugins) { var isOrderingDirty = false; for (var pluginName in injectedNamesToPlugins) { if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { continue; } var pluginModule = injectedNamesToPlugins[pluginName]; if ( !namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule ) { if (namesToPlugins[pluginName]) { throw new Error( "EventPluginRegistry: Cannot inject two different event plugins " + ("using the same name, `" + pluginName + "`.") ); } namesToPlugins[pluginName] = pluginModule; isOrderingDirty = true; } } if (isOrderingDirty) { recomputePluginOrdering(); } } /** * Get a list of listeners for a specific event, in-order. * For React Native we treat the props-based function handlers * as the first-class citizens, and they are always executed first * for both capture and bubbling phase. * * We need "phase" propagated to this point to support the HostComponent * EventEmitter API, which does not mutate the name of the handler based * on phase (whereas prop handlers are registered as `onMyEvent` and `onMyEvent_Capture`). * * Native system events emitted into React Native * will be emitted both to the prop handler function and to imperative event * listeners. * * This will either return null, a single Function without an array, or * an array of 2+ items. */ function getListeners( inst, registrationName, phase, dispatchToImperativeListeners ) { var stateNode = inst.stateNode; if (stateNode === null) { return null; } // If null: Work in progress (ex: onload events in incremental mode). var props = getFiberCurrentPropsFromNode(stateNode); if (props === null) { // Work in progress. return null; } var listener = props[registrationName]; if (listener && typeof listener !== "function") { throw new Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." ); } // If there are no imperative listeners, early exit. if ( !( dispatchToImperativeListeners && stateNode.canonical && stateNode.canonical._eventListeners ) ) { return listener; } // Below this is the de-optimized path. // If you are using _eventListeners, we do not (yet) // expect this to be as performant as the props-only path. // If/when this becomes a bottleneck, it can be refactored // to avoid unnecessary closures and array allocations. // // Previously, there was only one possible listener for an event: // the onEventName property in props. // Now, it is also possible to have N listeners // for a specific event on a node. Thus, we accumulate all of the listeners, // including the props listener, and return a function that calls them all in // order, starting with the handler prop and then the listeners in order. // We return either a non-empty array or null. var listeners = []; if (listener) { listeners.push(listener); } // TODO: for now, all of these events get an `rn:` prefix to enforce // that the user knows they're only getting non-W3C-compliant events // through this imperative event API. // Events might not necessarily be noncompliant, but we currently have // no verification that /any/ events are compliant. // Thus, we prefix to ensure no collision with W3C event names. var requestedPhaseIsCapture = phase === "captured"; var mangledImperativeRegistrationName = requestedPhaseIsCapture ? "rn:" + registrationName.replace(/Capture$/, "") : "rn:" + registrationName; // Get imperative event listeners for this event if ( stateNode.canonical._eventListeners[mangledImperativeRegistrationName] && stateNode.canonical._eventListeners[mangledImperativeRegistrationName] .length > 0 ) { var eventListeners = stateNode.canonical._eventListeners[mangledImperativeRegistrationName]; eventListeners.forEach(function(listenerObj) { // Make sure phase of listener matches requested phase var isCaptureEvent = listenerObj.options.capture != null && listenerObj.options.capture; if (isCaptureEvent !== requestedPhaseIsCapture) { return; } // For now (this is an area of future optimization) we must wrap // all imperative event listeners in a function to unwrap the SyntheticEvent // and pass them an Event. // When this API is more stable and used more frequently, we can revisit. var listenerFnWrapper = function(syntheticEvent) { var eventInst = new ReactNativePrivateInterface.CustomEvent( mangledImperativeRegistrationName, { detail: syntheticEvent.nativeEvent } ); eventInst.isTrusted = true; // setSyntheticEvent is present on the React Native Event shim. // It is used to forward method calls on Event to the underlying SyntheticEvent. // $FlowFixMe eventInst.setSyntheticEvent(syntheticEvent); for ( var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++ ) { args[_key - 1] = arguments[_key]; } listenerObj.listener.apply(listenerObj, [eventInst].concat(args)); }; // Only call once? // If so, we ensure that it's only called once by setting a flag // and by removing it from eventListeners once it is called (but only // when it's actually been executed). if (listenerObj.options.once) { listeners.push(function() { // Remove from the event listener once it's been called stateNode.canonical.removeEventListener_unstable( mangledImperativeRegistrationName, listenerObj.listener, listenerObj.capture ); // Guard against function being called more than once in // case there are somehow multiple in-flight references to // it being processed if (!listenerObj.invalidated) { listenerObj.invalidated = true; listenerObj.listener.apply(listenerObj, arguments); } }); } else { listeners.push(listenerFnWrapper); } }); } if (listeners.length === 0) { return null; } if (listeners.length === 1) { return listeners[0]; } return listeners; } var customBubblingEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry .customBubblingEventTypes, customDirectEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry .customDirectEventTypes; // Start of inline: the below functions were inlined from // EventPropagator.js, as they deviated from ReactDOM's newer // implementations. function listenersAtPhase(inst, event, propagationPhase) { var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; return getListeners(inst, registrationName, propagationPhase, true); } function accumulateListenersAndInstances(inst, event, listeners) { var listenersLength = listeners ? isArray(listeners) ? listeners.length : 1 : 0; if (listenersLength > 0) { event._dispatchListeners = accumulateInto( event._dispatchListeners, listeners ); // Avoid allocating additional arrays here if (event._dispatchInstances == null && listenersLength === 1) { event._dispatchInstances = inst; } else { event._dispatchInstances = event._dispatchInstances || []; if (!isArray(event._dispatchInstances)) { event._dispatchInstances = [event._dispatchInstances]; } for (var i = 0; i < listenersLength; i++) { event._dispatchInstances.push(inst); } } } } function accumulateDirectionalDispatches$1(inst, phase, event) { { if (!inst) { error("Dispatching inst must not be null"); } } var listeners = listenersAtPhase(inst, event, phase); accumulateListenersAndInstances(inst, event, listeners); } function getParent$1(inst) { do { inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. // That is depending on if we want nested subtrees (layers) to bubble // events to their parent. We could also go through parentNode on the // host node but that wouldn't work for React Native and doesn't let us // do the portal feature. } while (inst && inst.tag !== HostComponent); if (inst) { return inst; } return null; } /** * Simulates the traversal of a two-phase, capture/bubble event dispatch. */ function traverseTwoPhase$1(inst, fn, arg, skipBubbling) { var path = []; while (inst) { path.push(inst); inst = getParent$1(inst); } var i; for (i = path.length; i-- > 0; ) { fn(path[i], "captured", arg); } if (skipBubbling) { // Dispatch on target only fn(path[0], "bubbled", arg); } else { for (i = 0; i < path.length; i++) { fn(path[i], "bubbled", arg); } } } function accumulateTwoPhaseDispatchesSingle$1(event) { if (event && event.dispatchConfig.phasedRegistrationNames) { traverseTwoPhase$1( event._targetInst, accumulateDirectionalDispatches$1, event, false ); } } function accumulateTwoPhaseDispatches$1(events) { forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle$1); } function accumulateCapturePhaseDispatches(event) { if (event && event.dispatchConfig.phasedRegistrationNames) { traverseTwoPhase$1( event._targetInst, accumulateDirectionalDispatches$1, event, true ); } } /** * Accumulates without regard to direction, does not look for phased * registration names. Same as `accumulateDirectDispatchesSingle` but without * requiring that the `dispatchMarker` be the same as the dispatched ID. */ function accumulateDispatches$1(inst, ignoredDirection, event) { if (inst && event && event.dispatchConfig.registrationName) { var registrationName = event.dispatchConfig.registrationName; var listeners = getListeners(inst, registrationName, "bubbled", false); accumulateListenersAndInstances(inst, event, listeners); } } /** * Accumulates dispatches on an `SyntheticEvent`, but only for the * `dispatchMarker`. * @param {SyntheticEvent} event */ function accumulateDirectDispatchesSingle$1(event) { if (event && event.dispatchConfig.registrationName) { accumulateDispatches$1(event._targetInst, null, event); } } function accumulateDirectDispatches$1(events) { forEachAccumulated(events, accumulateDirectDispatchesSingle$1); } // End of inline var ReactNativeBridgeEventPlugin = { eventTypes: {}, extractEvents: function( topLevelType, targetInst, nativeEvent, nativeEventTarget ) { if (targetInst == null) { // Probably a node belonging to another renderer's tree. return null; } var bubbleDispatchConfig = customBubblingEventTypes[topLevelType]; var directDispatchConfig = customDirectEventTypes[topLevelType]; if (!bubbleDispatchConfig && !directDispatchConfig) { throw new Error( // $FlowFixMe - Flow doesn't like this string coercion because DOMTopLevelEventType is opaque 'Unsupported top level event type "' + topLevelType + '" dispatched' ); } var event = SyntheticEvent.getPooled( bubbleDispatchConfig || directDispatchConfig, targetInst, nativeEvent, nativeEventTarget ); if (bubbleDispatchConfig) { var skipBubbling = event != null && event.dispatchConfig.phasedRegistrationNames != null && event.dispatchConfig.phasedRegistrationNames.skipBubbling; if (skipBubbling) { accumulateCapturePhaseDispatches(event); } else { accumulateTwoPhaseDispatches$1(event); } } else if (directDispatchConfig) { accumulateDirectDispatches$1(event); } else { return null; } return event; } }; var ReactNativeEventPluginOrder = [ "ResponderEventPlugin", "ReactNativeBridgeEventPlugin" ]; /** * Make sure essential globals are available and are patched correctly. Please don't remove this * line. Bundles created by react-packager `require` it before executing any application code. This * ensures it exists in the dependency graph and can be `require`d. * TODO: require this in packager, not in React #10932517 */ /** * Inject module for resolving DOM hierarchy and plugin ordering. */ injectEventPluginOrder(ReactNativeEventPluginOrder); /** * Some important event plugins included by default (without having to require * them). */ injectEventPluginsByName({ ResponderEventPlugin: ResponderEventPlugin, ReactNativeBridgeEventPlugin: ReactNativeBridgeEventPlugin }); var instanceCache = new Map(); var instanceProps = new Map(); function precacheFiberNode(hostInst, tag) { instanceCache.set(tag, hostInst); } function uncacheFiberNode(tag) { instanceCache.delete(tag); instanceProps.delete(tag); } function getInstanceFromTag(tag) { return instanceCache.get(tag) || null; } function getTagFromInstance(inst) { var nativeInstance = inst.stateNode; var tag = nativeInstance._nativeTag; if (tag === undefined) { nativeInstance = nativeInstance.canonical; tag = nativeInstance._nativeTag; } if (!tag) { throw new Error("All native instances should have a tag."); } return nativeInstance; } function getFiberCurrentPropsFromNode$1(stateNode) { return instanceProps.get(stateNode._nativeTag) || null; } function updateFiberProps(tag, props) { instanceProps.set(tag, props); } // Used as a way to call batchedUpdates when we don't have a reference to // the renderer. Such as when we're dispatching events or if third party // libraries need to call batchedUpdates. Eventually, this API will go away when // everything is batched by default. We'll then have a similar API to opt-out of // scheduled work and instead do synchronous work. // Defaults var batchedUpdatesImpl = function(fn, bookkeeping) { return fn(bookkeeping); }; var isInsideEventHandler = false; function batchedUpdates(fn, bookkeeping) { if (isInsideEventHandler) { // If we are currently inside another batch, we need to wait until it // fully completes before restoring state. return fn(bookkeeping); } isInsideEventHandler = true; try { return batchedUpdatesImpl(fn, bookkeeping); } finally { isInsideEventHandler = false; } } function setBatchingImplementation(_batchedUpdatesImpl, _discreteUpdatesImpl) { batchedUpdatesImpl = _batchedUpdatesImpl; } /** * Internal queue of events that have accumulated their dispatches and are * waiting to have their dispatches executed. */ var eventQueue = null; /** * Dispatches an event and releases it back into the pool, unless persistent. * * @param {?object} event Synthetic event to be dispatched. * @private */ var executeDispatchesAndRelease = function(event) { if (event) { executeDispatchesInOrder(event); if (!event.isPersistent()) { event.constructor.release(event); } } }; var executeDispatchesAndReleaseTopLevel = function(e) { return executeDispatchesAndRelease(e); }; function runEventsInBatch(events) { if (events !== null) { eventQueue = accumulateInto(eventQueue, events); } // Set `eventQueue` to null before processing it so that we can tell if more // events get enqueued while processing. var processingEventQueue = eventQueue; eventQueue = null; if (!processingEventQueue) { return; } forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel); if (eventQueue) { throw new Error( "processEventQueue(): Additional events were enqueued while processing " + "an event queue. Support for this has not yet been implemented." ); } // This would be a good time to rethrow if any of the event handlers threw. rethrowCaughtError(); } /** * Version of `ReactBrowserEventEmitter` that works on the receiving side of a * serialized worker boundary. */ // Shared default empty native event - conserve memory. var EMPTY_NATIVE_EVENT = {}; /** * Selects a subsequence of `Touch`es, without destroying `touches`. * * @param {Array} touches Deserialized touch objects. * @param {Array} indices Indices by which to pull subsequence. * @return {Array} Subsequence of touch objects. */ var touchSubsequence = function(touches, indices) { var ret = []; for (var i = 0; i < indices.length; i++) { ret.push(touches[indices[i]]); } return ret; }; /** * TODO: Pool all of this. * * Destroys `touches` by removing touch objects at indices `indices`. This is * to maintain compatibility with W3C touch "end" events, where the active * touches don't include the set that has just been "ended". * * @param {Array} touches Deserialized touch objects. * @param {Array} indices Indices to remove from `touches`. * @return {Array} Subsequence of removed touch objects. */ var removeTouchesAtIndices = function(touches, indices) { var rippedOut = []; // use an unsafe downcast to alias to nullable elements, // so we can delete and then compact. var temp = touches; for (var i = 0; i < indices.length; i++) { var index = indices[i]; rippedOut.push(touches[index]); temp[index] = null; } var fillAt = 0; for (var j = 0; j < temp.length; j++) { var cur = temp[j]; if (cur !== null) { temp[fillAt++] = cur; } } temp.length = fillAt; return rippedOut; }; /** * Internal version of `receiveEvent` in terms of normalized (non-tag) * `rootNodeID`. * * @see receiveEvent. * * @param {rootNodeID} rootNodeID React root node ID that event occurred on. * @param {TopLevelType} topLevelType Top level type of event. * @param {?object} nativeEventParam Object passed from native. */ function _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam) { var nativeEvent = nativeEventParam || EMPTY_NATIVE_EVENT; var inst = getInstanceFromTag(rootNodeID); var target = null; if (inst != null) { target = inst.stateNode; } batchedUpdates(function() { runExtractedPluginEventsInBatch(topLevelType, inst, nativeEvent, target); }); // React Native doesn't use ReactControlledComponent but if it did, here's // where it would do it. } /** * Allows registered plugins an opportunity to extract events from top-level * native browser events. * * @return {*} An accumulation of synthetic events. * @internal */ function extractPluginEvents( topLevelType, targetInst, nativeEvent, nativeEventTarget ) { var events = null; var legacyPlugins = plugins; for (var i = 0; i < legacyPlugins.length; i++) { // Not every plugin in the ordering may be loaded at runtime. var possiblePlugin = legacyPlugins[i]; if (possiblePlugin) { var extractedEvents = possiblePlugin.extractEvents( topLevelType, targetInst, nativeEvent, nativeEventTarget ); if (extractedEvents) { events = accumulateInto(events, extractedEvents); } } } return events; } function runExtractedPluginEventsInBatch( topLevelType, targetInst, nativeEvent, nativeEventTarget ) { var events = extractPluginEvents( topLevelType, targetInst, nativeEvent, nativeEventTarget ); runEventsInBatch(events); } /** * Publicly exposed method on module for native objc to invoke when a top * level event is extracted. * @param {rootNodeID} rootNodeID React root node ID that event occurred on. * @param {TopLevelType} topLevelType Top level type of event. * @param {object} nativeEventParam Object passed from native. */ function receiveEvent(rootNodeID, topLevelType, nativeEventParam) { _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam); } /** * Simple multi-wrapper around `receiveEvent` that is intended to receive an * efficient representation of `Touch` objects, and other information that * can be used to construct W3C compliant `Event` and `Touch` lists. * * This may create dispatch behavior that differs than web touch handling. We * loop through each of the changed touches and receive it as a single event. * So two `touchStart`/`touchMove`s that occur simultaneously are received as * two separate touch event dispatches - when they arguably should be one. * * This implementation reuses the `Touch` objects themselves as the `Event`s * since we dispatch an event for each touch (though that might not be spec * compliant). The main purpose of reusing them is to save allocations. * * TODO: Dispatch multiple changed touches in one event. The bubble path * could be the first common ancestor of all the `changedTouches`. * * One difference between this behavior and W3C spec: cancelled touches will * not appear in `.touches`, or in any future `.touches`, though they may * still be "actively touching the surface". * * Web desktop polyfills only need to construct a fake touch event with * identifier 0, also abandoning traditional click handlers. */ function receiveTouches(eventTopLevelType, touches, changedIndices) { var changedTouches = eventTopLevelType === "topTouchEnd" || eventTopLevelType === "topTouchCancel" ? removeTouchesAtIndices(touches, changedIndices) : touchSubsequence(touches, changedIndices); for (var jj = 0; jj < changedTouches.length; jj++) { var touch = changedTouches[jj]; // Touch objects can fulfill the role of `DOM` `Event` objects if we set // the `changedTouches`/`touches`. This saves allocations. touch.changedTouches = changedTouches; touch.touches = touches; var nativeEvent = touch; var rootNodeID = null; var target = nativeEvent.target; if (target !== null && target !== undefined) { if (target < 1) { { error("A view is reporting that a touch occurred on tag zero."); } } else { rootNodeID = target; } } // $FlowFixMe Shouldn't we *not* call it if rootNodeID is null? _receiveRootNodeIDEvent(rootNodeID, eventTopLevelType, nativeEvent); } } // Module provided by RN: var ReactNativeGlobalResponderHandler = { onChange: function(from, to, blockNativeResponder) { if (to !== null) { var tag = to.stateNode._nativeTag; ReactNativePrivateInterface.UIManager.setJSResponder( tag, blockNativeResponder ); } else { ReactNativePrivateInterface.UIManager.clearJSResponder(); } } }; /** * Register the event emitter with the native bridge */ ReactNativePrivateInterface.RCTEventEmitter.register({ receiveEvent: receiveEvent, receiveTouches: receiveTouches }); setComponentTree( getFiberCurrentPropsFromNode$1, getInstanceFromTag, getTagFromInstance ); ResponderEventPlugin.injection.injectGlobalResponderHandler( ReactNativeGlobalResponderHandler ); /** * `ReactInstanceMap` maintains a mapping from a public facing stateful * instance (key) and the internal representation (value). This allows public * methods to accept the user facing instance as an argument and map them back * to internal methods. * * Note that this module is currently shared and assumed to be stateless. * If this becomes an actual Map, that will break. */ function get(key) { return key._reactInternals; } function set(key, value) { key._reactInternals = value; } var enableSchedulingProfiler = false; var enableProfilerTimer = true; var enableProfilerCommitHooks = true; var warnAboutStringRefs = false; var enableSuspenseAvoidThisFallback = false; var enableNewReconciler = false; var enableLazyContextPropagation = false; var enableLegacyHidden = false; // ATTENTION // When adding new symbols to this file, // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' // The Symbol used to tag the ReactElement-like types. var REACT_ELEMENT_TYPE = Symbol.for("react.element"); var REACT_PORTAL_TYPE = Symbol.for("react.portal"); var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); var REACT_CONTEXT_TYPE = Symbol.for("react.context"); var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); var REACT_MEMO_TYPE = Symbol.for("react.memo"); var REACT_LAZY_TYPE = Symbol.for("react.lazy"); var REACT_SCOPE_TYPE = Symbol.for("react.scope"); var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for("react.debug_trace_mode"); var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); var REACT_LEGACY_HIDDEN_TYPE = Symbol.for("react.legacy_hidden"); var REACT_CACHE_TYPE = Symbol.for("react.cache"); var REACT_TRACING_MARKER_TYPE = Symbol.for("react.tracing_marker"); var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; var FAUX_ITERATOR_SYMBOL = "@@iterator"; function getIteratorFn(maybeIterable) { if (maybeIterable === null || typeof maybeIterable !== "object") { return null; } var maybeIterator = (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || maybeIterable[FAUX_ITERATOR_SYMBOL]; if (typeof maybeIterator === "function") { return maybeIterator; } return null; } function getWrappedName(outerType, innerType, wrapperName) { var displayName = outerType.displayName; if (displayName) { return displayName; } var functionName = innerType.displayName || innerType.name || ""; return functionName !== "" ? wrapperName + "(" + functionName + ")" : wrapperName; } // Keep in sync with react-reconciler/getComponentNameFromFiber function getContextName(type) { return type.displayName || "Context"; } // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. function getComponentNameFromType(type) { if (type == null) { // Host root, text node or just invalid type. return null; } { if (typeof type.tag === "number") { error( "Received an unexpected object in getComponentNameFromType(). " + "This is likely a bug in React. Please file an issue." ); } } if (typeof type === "function") { return type.displayName || type.name || null; } if (typeof type === "string") { return type; } switch (type) { case REACT_FRAGMENT_TYPE: return "Fragment"; case REACT_PORTAL_TYPE: return "Portal"; case REACT_PROFILER_TYPE: return "Profiler"; case REACT_STRICT_MODE_TYPE: return "StrictMode"; case REACT_SUSPENSE_TYPE: return "Suspense"; case REACT_SUSPENSE_LIST_TYPE: return "SuspenseList"; } if (typeof type === "object") { switch (type.$$typeof) { case REACT_CONTEXT_TYPE: var context = type; return getContextName(context) + ".Consumer"; case REACT_PROVIDER_TYPE: var provider = type; return getContextName(provider._context) + ".Provider"; case REACT_FORWARD_REF_TYPE: return getWrappedName(type, type.render, "ForwardRef"); case REACT_MEMO_TYPE: var outerName = type.displayName || null; if (outerName !== null) { return outerName; } return getComponentNameFromType(type.type) || "Memo"; case REACT_LAZY_TYPE: { var lazyComponent = type; var payload = lazyComponent._payload; var init = lazyComponent._init; try { return getComponentNameFromType(init(payload)); } catch (x) { return null; } } // eslint-disable-next-line no-fallthrough } } return null; } function getWrappedName$1(outerType, innerType, wrapperName) { var functionName = innerType.displayName || innerType.name || ""; return ( outerType.displayName || (functionName !== "" ? wrapperName + "(" + functionName + ")" : wrapperName) ); } // Keep in sync with shared/getComponentNameFromType function getContextName$1(type) { return type.displayName || "Context"; } function getComponentNameFromFiber(fiber) { var tag = fiber.tag, type = fiber.type; switch (tag) { case CacheComponent: return "Cache"; case ContextConsumer: var context = type; return getContextName$1(context) + ".Consumer"; case ContextProvider: var provider = type; return getContextName$1(provider._context) + ".Provider"; case DehydratedFragment: return "DehydratedFragment"; case ForwardRef: return getWrappedName$1(type, type.render, "ForwardRef"); case Fragment: return "Fragment"; case HostComponent: // Host component type is the display name (e.g. "div", "View") return type; case HostPortal: return "Portal"; case HostRoot: return "Root"; case HostText: return "Text"; case LazyComponent: // Name comes from the type in this case; we don't have a tag. return getComponentNameFromType(type); case Mode: if (type === REACT_STRICT_MODE_TYPE) { // Don't be less specific than shared/getComponentNameFromType return "StrictMode"; } return "Mode"; case OffscreenComponent: return "Offscreen"; case Profiler: return "Profiler"; case ScopeComponent: return "Scope"; case SuspenseComponent: return "Suspense"; case SuspenseListComponent: return "SuspenseList"; case TracingMarkerComponent: return "TracingMarker"; // The display name for this tags come from the user-provided type: case ClassComponent: case FunctionComponent: case IncompleteClassComponent: case IndeterminateComponent: case MemoComponent: case SimpleMemoComponent: if (typeof type === "function") { return type.displayName || type.name || null; } if (typeof type === "string") { return type; } break; } return null; } // Don't change these two values. They're used by React Dev Tools. var NoFlags = /* */ 0; var PerformedWork = /* */ 1; // You can change the rest (and add more). var Placement = /* */ 2; var Update = /* */ 4; var ChildDeletion = /* */ 16; var ContentReset = /* */ 32; var Callback = /* */ 64; var DidCapture = /* */ 128; var ForceClientRender = /* */ 256; var Ref = /* */ 512; var Snapshot = /* */ 1024; var Passive = /* */ 2048; var Hydrating = /* */ 4096; var Visibility = /* */ 8192; var StoreConsistency = /* */ 16384; var LifecycleEffectMask = Passive | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) var HostEffectMask = /* */ 32767; // These are not really side effects, but we still reuse this field. var Incomplete = /* */ 32768; var ShouldCapture = /* */ 65536; var ForceUpdateForLegacySuspense = /* */ 131072; var Forked = /* */ 1048576; // Static tags describe aspects of a fiber that are not specific to a render, // e.g. a fiber uses a passive effect (even if there are no updates on this particular render). // This enables us to defer more work in the unmount case, // since we can defer traversing the tree during layout to look for Passive effects, // and instead rely on the static flag as a signal that there may be cleanup work. var RefStatic = /* */ 2097152; var LayoutStatic = /* */ 4194304; var PassiveStatic = /* */ 8388608; // These flags allow us to traverse to fibers that have effects on mount // don't contain effects, by checking subtreeFlags. var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility // flag logic (see #20043) Update | Snapshot | 0; var MutationMask = Placement | Update | ChildDeletion | ContentReset | Ref | Hydrating | Visibility; var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask var PassiveMask = Passive | ChildDeletion; // Union of tags that don't get reset on clones. // This allows certain concepts to persist without recalculating them, // e.g. whether a subtree contains passive effects or portals. var StaticMask = LayoutStatic | PassiveStatic | RefStatic; var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner; function getNearestMountedFiber(fiber) { var node = fiber; var nearestMounted = fiber; if (!fiber.alternate) { // If there is no alternate, this might be a new tree that isn't inserted // yet. If it is, then it will have a pending insertion effect on it. var nextNode = node; do { node = nextNode; if ((node.flags & (Placement | Hydrating)) !== NoFlags) { // This is an insertion or in-progress hydration. The nearest possible // mounted fiber is the parent but we need to continue to figure out // if that one is still mounted. nearestMounted = node.return; } nextNode = node.return; } while (nextNode); } else { while (node.return) { node = node.return; } } if (node.tag === HostRoot) { // TODO: Check if this was a nested HostRoot when used with // renderContainerIntoSubtree. return nearestMounted; } // If we didn't hit the root, that means that we're in an disconnected tree // that has been unmounted. return null; } function isFiberMounted(fiber) { return getNearestMountedFiber(fiber) === fiber; } function isMounted(component) { { var owner = ReactCurrentOwner.current; if (owner !== null && owner.tag === ClassComponent) { var ownerFiber = owner; var instance = ownerFiber.stateNode; if (!instance._warnedAboutRefsInRender) { error( "%s is accessing isMounted inside its render() function. " + "render() should be a pure function of props and state. It should " + "never access something that requires stale data from the previous " + "render, such as refs. Move this logic to componentDidMount and " + "componentDidUpdate instead.", getComponentNameFromFiber(ownerFiber) || "A component" ); } instance._warnedAboutRefsInRender = true; } } var fiber = get(component); if (!fiber) { return false; } return getNearestMountedFiber(fiber) === fiber; } function assertIsMounted(fiber) { if (getNearestMountedFiber(fiber) !== fiber) { throw new Error("Unable to find node on an unmounted component."); } } function findCurrentFiberUsingSlowPath(fiber) { var alternate = fiber.alternate; if (!alternate) { // If there is no alternate, then we only need to check if it is mounted. var nearestMounted = getNearestMountedFiber(fiber); if (nearestMounted === null) { throw new Error("Unable to find node on an unmounted component."); } if (nearestMounted !== fiber) { return null; } return fiber; } // If we have two possible branches, we'll walk backwards up to the root // to see what path the root points to. On the way we may hit one of the // special cases and we'll deal with them. var a = fiber; var b = alternate; while (true) { var parentA = a.return; if (parentA === null) { // We're at the root. break; } var parentB = parentA.alternate; if (parentB === null) { // There is no alternate. This is an unusual case. Currently, it only // happens when a Suspense component is hidden. An extra fragment fiber // is inserted in between the Suspense fiber and its children. Skip // over this extra fragment fiber and proceed to the next parent. var nextParent = parentA.return; if (nextParent !== null) { a = b = nextParent; continue; } // If there's no parent, we're at the root. break; } // If both copies of the parent fiber point to the same child, we can // assume that the child is current. This happens when we bailout on low // priority: the bailed out fiber's child reuses the current child. if (parentA.child === parentB.child) { var child = parentA.child; while (child) { if (child === a) { // We've determined that A is the current branch. assertIsMounted(parentA); return fiber; } if (child === b) { // We've determined that B is the current branch. assertIsMounted(parentA); return alternate; } child = child.sibling; } // We should never have an alternate for any mounting node. So the only // way this could possibly happen is if this was unmounted, if at all. throw new Error("Unable to find node on an unmounted component."); } if (a.return !== b.return) { // The return pointer of A and the return pointer of B point to different // fibers. We assume that return pointers never criss-cross, so A must // belong to the child set of A.return, and B must belong to the child // set of B.return. a = parentA; b = parentB; } else { // The return pointers point to the same fiber. We'll have to use the // default, slow path: scan the child sets of each parent alternate to see // which child belongs to which set. // // Search parent A's child set var didFindChild = false; var _child = parentA.child; while (_child) { if (_child === a) { didFindChild = true; a = parentA; b = parentB; break; } if (_child === b) { didFindChild = true; b = parentA; a = parentB; break; } _child = _child.sibling; } if (!didFindChild) { // Search parent B's child set _child = parentB.child; while (_child) { if (_child === a) { didFindChild = true; a = parentB; b = parentA; break; } if (_child === b) { didFindChild = true; b = parentB; a = parentA; break; } _child = _child.sibling; } if (!didFindChild) { throw new Error( "Child was not found in either parent set. This indicates a bug " + "in React related to the return pointer. Please file an issue." ); } } } if (a.alternate !== b) { throw new Error( "Return fibers should always be each others' alternates. " + "This error is likely caused by a bug in React. Please file an issue." ); } } // If the root is not a host container, we're in a disconnected tree. I.e. // unmounted. if (a.tag !== HostRoot) { throw new Error("Unable to find node on an unmounted component."); } if (a.stateNode.current === a) { // We've determined that A is the current branch. return fiber; } // Otherwise B has to be current branch. return alternate; } function findCurrentHostFiber(parent) { var currentParent = findCurrentFiberUsingSlowPath(parent); return currentParent !== null ? findCurrentHostFiberImpl(currentParent) : null; } function findCurrentHostFiberImpl(node) { // Next we'll drill down this component to find the first HostComponent/Text. if (node.tag === HostComponent || node.tag === HostText) { return node; } var child = node.child; while (child !== null) { var match = findCurrentHostFiberImpl(child); if (match !== null) { return match; } child = child.sibling; } return null; } // Modules provided by RN: var emptyObject = {}; /** * Create a payload that contains all the updates between two sets of props. * * These helpers are all encapsulated into a single module, because they use * mutation as a performance optimization which leads to subtle shared * dependencies between the code paths. To avoid this mutable state leaking * across modules, I've kept them isolated to this module. */ // Tracks removed keys var removedKeys = null; var removedKeyCount = 0; var deepDifferOptions = { unsafelyIgnoreFunctions: true }; function defaultDiffer(prevProp, nextProp) { if (typeof nextProp !== "object" || nextProp === null) { // Scalars have already been checked for equality return true; } else { // For objects and arrays, the default diffing algorithm is a deep compare return ReactNativePrivateInterface.deepDiffer( prevProp, nextProp, deepDifferOptions ); } } function restoreDeletedValuesInNestedArray( updatePayload, node, validAttributes ) { if (isArray(node)) { var i = node.length; while (i-- && removedKeyCount > 0) { restoreDeletedValuesInNestedArray( updatePayload, node[i], validAttributes ); } } else if (node && removedKeyCount > 0) { var obj = node; for (var propKey in removedKeys) { if (!removedKeys[propKey]) { continue; } var nextProp = obj[propKey]; if (nextProp === undefined) { continue; } var attributeConfig = validAttributes[propKey]; if (!attributeConfig) { continue; // not a valid native prop } if (typeof nextProp === "function") { nextProp = true; } if (typeof nextProp === "undefined") { nextProp = null; } if (typeof attributeConfig !== "object") { // case: !Object is the default case updatePayload[propKey] = nextProp; } else if ( typeof attributeConfig.diff === "function" || typeof attributeConfig.process === "function" ) { // case: CustomAttributeConfiguration var nextValue = typeof attributeConfig.process === "function" ? attributeConfig.process(nextProp) : nextProp; updatePayload[propKey] = nextValue; } removedKeys[propKey] = false; removedKeyCount--; } } } function diffNestedArrayProperty( updatePayload, prevArray, nextArray, validAttributes ) { var minLength = prevArray.length < nextArray.length ? prevArray.length : nextArray.length; var i; for (i = 0; i < minLength; i++) { // Diff any items in the array in the forward direction. Repeated keys // will be overwritten by later values. updatePayload = diffNestedProperty( updatePayload, prevArray[i], nextArray[i], validAttributes ); } for (; i < prevArray.length; i++) { // Clear out all remaining properties. updatePayload = clearNestedProperty( updatePayload, prevArray[i], validAttributes ); } for (; i < nextArray.length; i++) { // Add all remaining properties. updatePayload = addNestedProperty( updatePayload, nextArray[i], validAttributes ); } return updatePayload; } function diffNestedProperty( updatePayload, prevProp, nextProp, validAttributes ) { if (!updatePayload && prevProp === nextProp) { // If no properties have been added, then we can bail out quickly on object // equality. return updatePayload; } if (!prevProp || !nextProp) { if (nextProp) { return addNestedProperty(updatePayload, nextProp, validAttributes); } if (prevProp) { return clearNestedProperty(updatePayload, prevProp, validAttributes); } return updatePayload; } if (!isArray(prevProp) && !isArray(nextProp)) { // Both are leaves, we can diff the leaves. return diffProperties(updatePayload, prevProp, nextProp, validAttributes); } if (isArray(prevProp) && isArray(nextProp)) { // Both are arrays, we can diff the arrays. return diffNestedArrayProperty( updatePayload, prevProp, nextProp, validAttributes ); } if (isArray(prevProp)) { return diffProperties( updatePayload, // $FlowFixMe - We know that this is always an object when the input is. ReactNativePrivateInterface.flattenStyle(prevProp), // $FlowFixMe - We know that this isn't an array because of above flow. nextProp, validAttributes ); } return diffProperties( updatePayload, prevProp, // $FlowFixMe - We know that this is always an object when the input is. ReactNativePrivateInterface.flattenStyle(nextProp), validAttributes ); } /** * addNestedProperty takes a single set of props and valid attribute * attribute configurations. It processes each prop and adds it to the * updatePayload. */ function addNestedProperty(updatePayload, nextProp, validAttributes) { if (!nextProp) { return updatePayload; } if (!isArray(nextProp)) { // Add each property of the leaf. return addProperties(updatePayload, nextProp, validAttributes); } for (var i = 0; i < nextProp.length; i++) { // Add all the properties of the array. updatePayload = addNestedProperty( updatePayload, nextProp[i], validAttributes ); } return updatePayload; } /** * clearNestedProperty takes a single set of props and valid attributes. It * adds a null sentinel to the updatePayload, for each prop key. */ function clearNestedProperty(updatePayload, prevProp, validAttributes) { if (!prevProp) { return updatePayload; } if (!isArray(prevProp)) { // Add each property of the leaf. return clearProperties(updatePayload, prevProp, validAttributes); } for (var i = 0; i < prevProp.length; i++) { // Add all the properties of the array. updatePayload = clearNestedProperty( updatePayload, prevProp[i], validAttributes ); } return updatePayload; } /** * diffProperties takes two sets of props and a set of valid attributes * and write to updatePayload the values that changed or were deleted. * If no updatePayload is provided, a new one is created and returned if * anything changed. */ function diffProperties(updatePayload, prevProps, nextProps, validAttributes) { var attributeConfig; var nextProp; var prevProp; for (var propKey in nextProps) { attributeConfig = validAttributes[propKey]; if (!attributeConfig) { continue; // not a valid native prop } prevProp = prevProps[propKey]; nextProp = nextProps[propKey]; // functions are converted to booleans as markers that the associated // events should be sent from native. if (typeof nextProp === "function") { nextProp = true; // If nextProp is not a function, then don't bother changing prevProp // since nextProp will win and go into the updatePayload regardless. if (typeof prevProp === "function") { prevProp = true; } } // An explicit value of undefined is treated as a null because it overrides // any other preceding value. if (typeof nextProp === "undefined") { nextProp = null; if (typeof prevProp === "undefined") { prevProp = null; } } if (removedKeys) { removedKeys[propKey] = false; } if (updatePayload && updatePayload[propKey] !== undefined) { // Something else already triggered an update to this key because another // value diffed. Since we're now later in the nested arrays our value is // more important so we need to calculate it and override the existing // value. It doesn't matter if nothing changed, we'll set it anyway. // Pattern match on: attributeConfig if (typeof attributeConfig !== "object") { // case: !Object is the default case updatePayload[propKey] = nextProp; } else if ( typeof attributeConfig.diff === "function" || typeof attributeConfig.process === "function" ) { // case: CustomAttributeConfiguration var nextValue = typeof attributeConfig.process === "function" ? attributeConfig.process(nextProp) : nextProp; updatePayload[propKey] = nextValue; } continue; } if (prevProp === nextProp) { continue; // nothing changed } // Pattern match on: attributeConfig if (typeof attributeConfig !== "object") { // case: !Object is the default case if (defaultDiffer(prevProp, nextProp)) { // a normal leaf has changed (updatePayload || (updatePayload = {}))[propKey] = nextProp; } } else if ( typeof attributeConfig.diff === "function" || typeof attributeConfig.process === "function" ) { // case: CustomAttributeConfiguration var shouldUpdate = prevProp === undefined || (typeof attributeConfig.diff === "function" ? attributeConfig.diff(prevProp, nextProp) : defaultDiffer(prevProp, nextProp)); if (shouldUpdate) { var _nextValue = typeof attributeConfig.process === "function" ? attributeConfig.process(nextProp) : nextProp; (updatePayload || (updatePayload = {}))[propKey] = _nextValue; } } else { // default: fallthrough case when nested properties are defined removedKeys = null; removedKeyCount = 0; // We think that attributeConfig is not CustomAttributeConfiguration at // this point so we assume it must be AttributeConfiguration. updatePayload = diffNestedProperty( updatePayload, prevProp, nextProp, attributeConfig ); if (removedKeyCount > 0 && updatePayload) { restoreDeletedValuesInNestedArray( updatePayload, nextProp, attributeConfig ); removedKeys = null; } } } // Also iterate through all the previous props to catch any that have been // removed and make sure native gets the signal so it can reset them to the // default. for (var _propKey in prevProps) { if (nextProps[_propKey] !== undefined) { continue; // we've already covered this key in the previous pass } attributeConfig = validAttributes[_propKey]; if (!attributeConfig) { continue; // not a valid native prop } if (updatePayload && updatePayload[_propKey] !== undefined) { // This was already updated to a diff result earlier. continue; } prevProp = prevProps[_propKey]; if (prevProp === undefined) { continue; // was already empty anyway } // Pattern match on: attributeConfig if ( typeof attributeConfig !== "object" || typeof attributeConfig.diff === "function" || typeof attributeConfig.process === "function" ) { // case: CustomAttributeConfiguration | !Object // Flag the leaf property for removal by sending a sentinel. (updatePayload || (updatePayload = {}))[_propKey] = null; if (!removedKeys) { removedKeys = {}; } if (!removedKeys[_propKey]) { removedKeys[_propKey] = true; removedKeyCount++; } } else { // default: // This is a nested attribute configuration where all the properties // were removed so we need to go through and clear out all of them. updatePayload = clearNestedProperty( updatePayload, prevProp, attributeConfig ); } } return updatePayload; } /** * addProperties adds all the valid props to the payload after being processed. */ function addProperties(updatePayload, props, validAttributes) { // TODO: Fast path return diffProperties(updatePayload, emptyObject, props, validAttributes); } /** * clearProperties clears all the previous props by adding a null sentinel * to the payload for each valid key. */ function clearProperties(updatePayload, prevProps, validAttributes) { // TODO: Fast path return diffProperties(updatePayload, prevProps, emptyObject, validAttributes); } function create(props, validAttributes) { return addProperties( null, // updatePayload props, validAttributes ); } function diff(prevProps, nextProps, validAttributes) { return diffProperties( null, // updatePayload prevProps, nextProps, validAttributes ); } /** * In the future, we should cleanup callbacks by cancelling them instead of * using this. */ function mountSafeCallback_NOT_REALLY_SAFE(context, callback) { return function() { if (!callback) { return undefined; } // This protects against createClass() components. // We don't know if there is code depending on it. // We intentionally don't use isMounted() because even accessing // isMounted property on a React ES6 class will trigger a warning. if (typeof context.__isMounted === "boolean") { if (!context.__isMounted) { return undefined; } } // FIXME: there used to be other branches that protected // against unmounted host components. But RN host components don't // define isMounted() anymore, so those checks didn't do anything. // They caused false positive warning noise so we removed them: // https://github.com/facebook/react-native/issues/18868#issuecomment-413579095 // However, this means that the callback is NOT guaranteed to be safe // for host components. The solution we should implement is to make // UIManager.measure() and similar calls truly cancelable. Then we // can change our own code calling them to cancel when something unmounts. return callback.apply(context, arguments); }; } function warnForStyleProps(props, validAttributes) { { for (var key in validAttributes.style) { if (!(validAttributes[key] || props[key] === undefined)) { error( "You are setting the style `{ %s" + ": ... }` as a prop. You " + "should nest it in a style object. " + "E.g. `{ style: { %s" + ": ... } }`", key, key ); } } } } var ReactNativeFiberHostComponent = /*#__PURE__*/ (function() { function ReactNativeFiberHostComponent( tag, viewConfig, internalInstanceHandleDEV ) { this._nativeTag = tag; this._children = []; this.viewConfig = viewConfig; { this._internalFiberInstanceHandleDEV = internalInstanceHandleDEV; } } var _proto = ReactNativeFiberHostComponent.prototype; _proto.blur = function blur() { ReactNativePrivateInterface.TextInputState.blurTextInput(this); }; _proto.focus = function focus() { ReactNativePrivateInterface.TextInputState.focusTextInput(this); }; _proto.measure = function measure(callback) { ReactNativePrivateInterface.UIManager.measure( this._nativeTag, mountSafeCallback_NOT_REALLY_SAFE(this, callback) ); }; _proto.measureInWindow = function measureInWindow(callback) { ReactNativePrivateInterface.UIManager.measureInWindow( this._nativeTag, mountSafeCallback_NOT_REALLY_SAFE(this, callback) ); }; _proto.measureLayout = function measureLayout( relativeToNativeNode, onSuccess, onFail ) /* currently unused */ { var relativeNode; if (typeof relativeToNativeNode === "number") { // Already a node handle relativeNode = relativeToNativeNode; } else { var nativeNode = relativeToNativeNode; if (nativeNode._nativeTag) { relativeNode = nativeNode._nativeTag; } } if (relativeNode == null) { { error( "Warning: ref.measureLayout must be called with a node handle or a ref to a native component." ); } return; } ReactNativePrivateInterface.UIManager.measureLayout( this._nativeTag, relativeNode, mountSafeCallback_NOT_REALLY_SAFE(this, onFail), mountSafeCallback_NOT_REALLY_SAFE(this, onSuccess) ); }; _proto.setNativeProps = function setNativeProps(nativeProps) { { warnForStyleProps(nativeProps, this.viewConfig.validAttributes); } var updatePayload = create(nativeProps, this.viewConfig.validAttributes); // Avoid the overhead of bridge calls if there's no update. // This is an expensive no-op for Android, and causes an unnecessary // view invalidation for certain components (eg RCTTextInput) on iOS. if (updatePayload != null) { ReactNativePrivateInterface.UIManager.updateView( this._nativeTag, this.viewConfig.uiViewClassName, updatePayload ); } }; return ReactNativeFiberHostComponent; })(); // eslint-disable-next-line no-unused-expressions // This module only exists as an ESM wrapper around the external CommonJS var scheduleCallback = Scheduler.unstable_scheduleCallback; var cancelCallback = Scheduler.unstable_cancelCallback; var shouldYield = Scheduler.unstable_shouldYield; var requestPaint = Scheduler.unstable_requestPaint; var now = Scheduler.unstable_now; var ImmediatePriority = Scheduler.unstable_ImmediatePriority; var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority; var NormalPriority = Scheduler.unstable_NormalPriority; var IdlePriority = Scheduler.unstable_IdlePriority; var rendererID = null; var injectedHook = null; var hasLoggedError = false; var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined"; function injectInternals(internals) { if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === "undefined") { // No DevTools return false; } var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; if (hook.isDisabled) { // This isn't a real property on the hook, but it can be set to opt out // of DevTools integration and associated warnings and logs. // https://github.com/facebook/react/issues/3877 return true; } if (!hook.supportsFiber) { { error( "The installed version of React DevTools is too old and will not work " + "with the current version of React. Please update React DevTools. " + "https://reactjs.org/link/react-devtools" ); } // DevTools exists, even though it doesn't support Fiber. return true; } try { if (enableSchedulingProfiler) { // Conditionally inject these hooks only if Timeline profiler is supported by this build. // This gives DevTools a way to feature detect that isn't tied to version number // (since profiling and timeline are controlled by different feature flags). internals = assign({}, internals, { getLaneLabelMap: getLaneLabelMap, injectProfilingHooks: injectProfilingHooks }); } rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. injectedHook = hook; } catch (err) { // Catch all errors because it is unsafe to throw during initialization. { error("React instrumentation encountered an error: %s.", err); } } if (hook.checkDCE) { // This is the real DevTools. return true; } else { // This is likely a hook installed by Fast Refresh runtime. return false; } } function onScheduleRoot(root, children) { { if ( injectedHook && typeof injectedHook.onScheduleFiberRoot === "function" ) { try { injectedHook.onScheduleFiberRoot(rendererID, root, children); } catch (err) { if (!hasLoggedError) { hasLoggedError = true; error("React instrumentation encountered an error: %s", err); } } } } } function onCommitRoot(root, eventPriority) { if (injectedHook && typeof injectedHook.onCommitFiberRoot === "function") { try { var didError = (root.current.flags & DidCapture) === DidCapture; if (enableProfilerTimer) { var schedulerPriority; switch (eventPriority) { case DiscreteEventPriority: schedulerPriority = ImmediatePriority; break; case ContinuousEventPriority: schedulerPriority = UserBlockingPriority; break; case DefaultEventPriority: schedulerPriority = NormalPriority; break; case IdleEventPriority: schedulerPriority = IdlePriority; break; default: schedulerPriority = NormalPriority; break; } injectedHook.onCommitFiberRoot( rendererID, root, schedulerPriority, didError ); } else { injectedHook.onCommitFiberRoot(rendererID, root, undefined, didError); } } catch (err) { { if (!hasLoggedError) { hasLoggedError = true; error("React instrumentation encountered an error: %s", err); } } } } } function onPostCommitRoot(root) { if ( injectedHook && typeof injectedHook.onPostCommitFiberRoot === "function" ) { try { injectedHook.onPostCommitFiberRoot(rendererID, root); } catch (err) { { if (!hasLoggedError) { hasLoggedError = true; error("React instrumentation encountered an error: %s", err); } } } } } function onCommitUnmount(fiber) { if (injectedHook && typeof injectedHook.onCommitFiberUnmount === "function") { try { injectedHook.onCommitFiberUnmount(rendererID, fiber); } catch (err) { { if (!hasLoggedError) { hasLoggedError = true; error("React instrumentation encountered an error: %s", err); } } } } } function injectProfilingHooks(profilingHooks) {} function getLaneLabelMap() { { return null; } } function markComponentRenderStopped() {} function markComponentErrored(fiber, thrownValue, lanes) {} function markComponentSuspended(fiber, wakeable, lanes) {} var NoMode = /* */ 0; // TODO: Remove ConcurrentMode by reading from the root tag instead var ConcurrentMode = /* */ 1; var ProfileMode = /* */ 2; var StrictLegacyMode = /* */ 8; // TODO: This is pretty well supported by browsers. Maybe we can drop it. var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. // Based on: // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 var log = Math.log; var LN2 = Math.LN2; function clz32Fallback(x) { var asUint = x >>> 0; if (asUint === 0) { return 32; } return (31 - ((log(asUint) / LN2) | 0)) | 0; } // If those values are changed that package should be rebuilt and redeployed. var TotalLanes = 31; var NoLanes = /* */ 0; var NoLane = /* */ 0; var SyncLane = /* */ 1; var InputContinuousHydrationLane = /* */ 2; var InputContinuousLane = /* */ 4; var DefaultHydrationLane = /* */ 8; var DefaultLane = /* */ 16; var TransitionHydrationLane = /* */ 32; var TransitionLanes = /* */ 4194240; var TransitionLane1 = /* */ 64; var TransitionLane2 = /* */ 128; var TransitionLane3 = /* */ 256; var TransitionLane4 = /* */ 512; var TransitionLane5 = /* */ 1024; var TransitionLane6 = /* */ 2048; var TransitionLane7 = /* */ 4096; var TransitionLane8 = /* */ 8192; var TransitionLane9 = /* */ 16384; var TransitionLane10 = /* */ 32768; var TransitionLane11 = /* */ 65536; var TransitionLane12 = /* */ 131072; var TransitionLane13 = /* */ 262144; var TransitionLane14 = /* */ 524288; var TransitionLane15 = /* */ 1048576; var TransitionLane16 = /* */ 2097152; var RetryLanes = /* */ 130023424; var RetryLane1 = /* */ 4194304; var RetryLane2 = /* */ 8388608; var RetryLane3 = /* */ 16777216; var RetryLane4 = /* */ 33554432; var RetryLane5 = /* */ 67108864; var SomeRetryLane = RetryLane1; var SelectiveHydrationLane = /* */ 134217728; var NonIdleLanes = /* */ 268435455; var IdleHydrationLane = /* */ 268435456; var IdleLane = /* */ 536870912; var OffscreenLane = /* */ 1073741824; // This function is used for the experimental timeline (react-devtools-timeline) var NoTimestamp = -1; var nextTransitionLane = TransitionLane1; var nextRetryLane = RetryLane1; function getHighestPriorityLanes(lanes) { switch (getHighestPriorityLane(lanes)) { case SyncLane: return SyncLane; case InputContinuousHydrationLane: return InputContinuousHydrationLane; case InputContinuousLane: return InputContinuousLane; case DefaultHydrationLane: return DefaultHydrationLane; case DefaultLane: return DefaultLane; case TransitionHydrationLane: return TransitionHydrationLane; case TransitionLane1: case TransitionLane2: case TransitionLane3: case TransitionLane4: case TransitionLane5: case TransitionLane6: case TransitionLane7: case TransitionLane8: case TransitionLane9: case TransitionLane10: case TransitionLane11: case TransitionLane12: case TransitionLane13: case TransitionLane14: case TransitionLane15: case TransitionLane16: return lanes & TransitionLanes; case RetryLane1: case RetryLane2: case RetryLane3: case RetryLane4: case RetryLane5: return lanes & RetryLanes; case SelectiveHydrationLane: return SelectiveHydrationLane; case IdleHydrationLane: return IdleHydrationLane; case IdleLane: return IdleLane; case OffscreenLane: return OffscreenLane; default: { error("Should have found matching lanes. This is a bug in React."); } // This shouldn't be reachable, but as a fallback, return the entire bitmask. return lanes; } } function getNextLanes(root, wipLanes) { // Early bailout if there's no pending work left. var pendingLanes = root.pendingLanes; if (pendingLanes === NoLanes) { return NoLanes; } var nextLanes = NoLanes; var suspendedLanes = root.suspendedLanes; var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, // even if the work is suspended. var nonIdlePendingLanes = pendingLanes & NonIdleLanes; if (nonIdlePendingLanes !== NoLanes) { var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; if (nonIdleUnblockedLanes !== NoLanes) { nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); } else { var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; if (nonIdlePingedLanes !== NoLanes) { nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); } } } else { // The only remaining work is Idle. var unblockedLanes = pendingLanes & ~suspendedLanes; if (unblockedLanes !== NoLanes) { nextLanes = getHighestPriorityLanes(unblockedLanes); } else { if (pingedLanes !== NoLanes) { nextLanes = getHighestPriorityLanes(pingedLanes); } } } if (nextLanes === NoLanes) { // This should only be reachable if we're suspended // TODO: Consider warning in this path if a fallback timer is not scheduled. return NoLanes; } // If we're already in the middle of a render, switching lanes will interrupt // it and we'll lose our progress. We should only do this if the new lanes are // higher priority. if ( wipLanes !== NoLanes && wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't // bother waiting until the root is complete. (wipLanes & suspendedLanes) === NoLanes ) { var nextLane = getHighestPriorityLane(nextLanes); var wipLane = getHighestPriorityLane(wipLanes); if ( // Tests whether the next lane is equal or lower priority than the wip // one. This works because the bits decrease in priority as you go left. nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The // only difference between default updates and transition updates is that // default updates do not support refresh transitions. (nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) ) { // Keep working on the existing in-progress tree. Do not interrupt. return wipLanes; } } if ((nextLanes & InputContinuousLane) !== NoLanes) { // When updates are sync by default, we entangle continuous priority updates // and default updates, so they render in the same batch. The only reason // they use separate lanes is because continuous updates should interrupt // transitions, but default updates should not. nextLanes |= pendingLanes & DefaultLane; } // Check for entangled lanes and add them to the batch. // // A lane is said to be entangled with another when it's not allowed to render // in a batch that does not also include the other lane. Typically we do this // when multiple updates have the same source, and we only want to respond to // the most recent event from that source. // // Note that we apply entanglements *after* checking for partial work above. // This means that if a lane is entangled during an interleaved event while // it's already rendering, we won't interrupt it. This is intentional, since // entanglement is usually "best effort": we'll try our best to render the // lanes in the same batch, but it's not worth throwing out partially // completed work in order to do it. // TODO: Reconsider this. The counter-argument is that the partial work // represents an intermediate state, which we don't want to show to the user. // And by spending extra time finishing it, we're increasing the amount of // time it takes to show the final state, which is what they are actually // waiting for. // // For those exceptions where entanglement is semantically important, like // useMutableSource, we should ensure that there is no partial work at the // time we apply the entanglement. var entangledLanes = root.entangledLanes; if (entangledLanes !== NoLanes) { var entanglements = root.entanglements; var lanes = nextLanes & entangledLanes; while (lanes > 0) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; nextLanes |= entanglements[index]; lanes &= ~lane; } } return nextLanes; } function getMostRecentEventTime(root, lanes) { var eventTimes = root.eventTimes; var mostRecentEventTime = NoTimestamp; while (lanes > 0) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; var eventTime = eventTimes[index]; if (eventTime > mostRecentEventTime) { mostRecentEventTime = eventTime; } lanes &= ~lane; } return mostRecentEventTime; } function computeExpirationTime(lane, currentTime) { switch (lane) { case SyncLane: case InputContinuousHydrationLane: case InputContinuousLane: // User interactions should expire slightly more quickly. // // NOTE: This is set to the corresponding constant as in Scheduler.js. // When we made it larger, a product metric in www regressed, suggesting // there's a user interaction that's being starved by a series of // synchronous updates. If that theory is correct, the proper solution is // to fix the starvation. However, this scenario supports the idea that // expiration times are an important safeguard when starvation // does happen. return currentTime + 250; case DefaultHydrationLane: case DefaultLane: case TransitionHydrationLane: case TransitionLane1: case TransitionLane2: case TransitionLane3: case TransitionLane4: case TransitionLane5: case TransitionLane6: case TransitionLane7: case TransitionLane8: case TransitionLane9: case TransitionLane10: case TransitionLane11: case TransitionLane12: case TransitionLane13: case TransitionLane14: case TransitionLane15: case TransitionLane16: return currentTime + 5000; case RetryLane1: case RetryLane2: case RetryLane3: case RetryLane4: case RetryLane5: // TODO: Retries should be allowed to expire if they are CPU bound for // too long, but when I made this change it caused a spike in browser // crashes. There must be some other underlying bug; not super urgent but // ideally should figure out why and fix it. Unfortunately we don't have // a repro for the crashes, only detected via production metrics. return NoTimestamp; case SelectiveHydrationLane: case IdleHydrationLane: case IdleLane: case OffscreenLane: // Anything idle priority or lower should never expire. return NoTimestamp; default: { error("Should have found matching lanes. This is a bug in React."); } return NoTimestamp; } } function markStarvedLanesAsExpired(root, currentTime) { // TODO: This gets called every time we yield. We can optimize by storing // the earliest expiration time on the root. Then use that to quickly bail out // of this function. var pendingLanes = root.pendingLanes; var suspendedLanes = root.suspendedLanes; var pingedLanes = root.pingedLanes; var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their // expiration time. If so, we'll assume the update is being starved and mark // it as expired to force it to finish. var lanes = pendingLanes; while (lanes > 0) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; var expirationTime = expirationTimes[index]; if (expirationTime === NoTimestamp) { // Found a pending lane with no expiration time. If it's not suspended, or // if it's pinged, assume it's CPU-bound. Compute a new expiration time // using the current time. if ( (lane & suspendedLanes) === NoLanes || (lane & pingedLanes) !== NoLanes ) { // Assumes timestamps are monotonically increasing. expirationTimes[index] = computeExpirationTime(lane, currentTime); } } else if (expirationTime <= currentTime) { // This lane expired root.expiredLanes |= lane; } lanes &= ~lane; } } // This returns the highest priority pending lanes regardless of whether they function getLanesToRetrySynchronouslyOnError(root) { var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; if (everythingButOffscreen !== NoLanes) { return everythingButOffscreen; } if (everythingButOffscreen & OffscreenLane) { return OffscreenLane; } return NoLanes; } function includesSyncLane(lanes) { return (lanes & SyncLane) !== NoLanes; } function includesNonIdleWork(lanes) { return (lanes & NonIdleLanes) !== NoLanes; } function includesOnlyRetries(lanes) { return (lanes & RetryLanes) === lanes; } function includesOnlyNonUrgentLanes(lanes) { var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; return (lanes & UrgentLanes) === NoLanes; } function includesOnlyTransitions(lanes) { return (lanes & TransitionLanes) === lanes; } function includesBlockingLane(root, lanes) { var SyncDefaultLanes = InputContinuousHydrationLane | InputContinuousLane | DefaultHydrationLane | DefaultLane; return (lanes & SyncDefaultLanes) !== NoLanes; } function includesExpiredLane(root, lanes) { // This is a separate check from includesBlockingLane because a lane can // expire after a render has already started. return (lanes & root.expiredLanes) !== NoLanes; } function isTransitionLane(lane) { return (lane & TransitionLanes) !== NoLanes; } function claimNextTransitionLane() { // Cycle through the lanes, assigning each new transition to the next lane. // In most cases, this means every transition gets its own lane, until we // run out of lanes and cycle back to the beginning. var lane = nextTransitionLane; nextTransitionLane <<= 1; if ((nextTransitionLane & TransitionLanes) === NoLanes) { nextTransitionLane = TransitionLane1; } return lane; } function claimNextRetryLane() { var lane = nextRetryLane; nextRetryLane <<= 1; if ((nextRetryLane & RetryLanes) === NoLanes) { nextRetryLane = RetryLane1; } return lane; } function getHighestPriorityLane(lanes) { return lanes & -lanes; } function pickArbitraryLane(lanes) { // This wrapper function gets inlined. Only exists so to communicate that it // doesn't matter which bit is selected; you can pick any bit without // affecting the algorithms where its used. Here I'm using // getHighestPriorityLane because it requires the fewest operations. return getHighestPriorityLane(lanes); } function pickArbitraryLaneIndex(lanes) { return 31 - clz32(lanes); } function laneToIndex(lane) { return pickArbitraryLaneIndex(lane); } function includesSomeLane(a, b) { return (a & b) !== NoLanes; } function isSubsetOfLanes(set, subset) { return (set & subset) === subset; } function mergeLanes(a, b) { return a | b; } function removeLanes(set, subset) { return set & ~subset; } function intersectLanes(a, b) { return a & b; } // Seems redundant, but it changes the type from a single lane (used for // updates) to a group of lanes (used for flushing work). function laneToLanes(lane) { return lane; } function createLaneMap(initial) { // Intentionally pushing one by one. // https://v8.dev/blog/elements-kinds#avoid-creating-holes var laneMap = []; for (var i = 0; i < TotalLanes; i++) { laneMap.push(initial); } return laneMap; } function markRootUpdated(root, updateLane, eventTime) { root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update // could unblock them. Clear the suspended lanes so that we can try rendering // them again. // // TODO: We really only need to unsuspend only lanes that are in the // `subtreeLanes` of the updated fiber, or the update lanes of the return // path. This would exclude suspended updates in an unrelated sibling tree, // since there's no way for this update to unblock it. // // We don't do this if the incoming update is idle, because we never process // idle updates until after all the regular updates have finished; there's no // way it could unblock a transition. if (updateLane !== IdleLane) { root.suspendedLanes = NoLanes; root.pingedLanes = NoLanes; } var eventTimes = root.eventTimes; var index = laneToIndex(updateLane); // We can always overwrite an existing timestamp because we prefer the most // recent event, and we assume time is monotonically increasing. eventTimes[index] = eventTime; } function markRootSuspended(root, suspendedLanes) { root.suspendedLanes |= suspendedLanes; root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. var expirationTimes = root.expirationTimes; var lanes = suspendedLanes; while (lanes > 0) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; expirationTimes[index] = NoTimestamp; lanes &= ~lane; } } function markRootPinged(root, pingedLanes, eventTime) { root.pingedLanes |= root.suspendedLanes & pingedLanes; } function markRootFinished(root, remainingLanes) { var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; root.pendingLanes = remainingLanes; // Let's try everything again root.suspendedLanes = NoLanes; root.pingedLanes = NoLanes; root.expiredLanes &= remainingLanes; root.mutableReadLanes &= remainingLanes; root.entangledLanes &= remainingLanes; var entanglements = root.entanglements; var eventTimes = root.eventTimes; var expirationTimes = root.expirationTimes; // Clear the lanes that no longer have pending work var lanes = noLongerPendingLanes; while (lanes > 0) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; entanglements[index] = NoLanes; eventTimes[index] = NoTimestamp; expirationTimes[index] = NoTimestamp; lanes &= ~lane; } } function markRootEntangled(root, entangledLanes) { // In addition to entangling each of the given lanes with each other, we also // have to consider _transitive_ entanglements. For each lane that is already // entangled with *any* of the given lanes, that lane is now transitively // entangled with *all* the given lanes. // // Translated: If C is entangled with A, then entangling A with B also // entangles C with B. // // If this is hard to grasp, it might help to intentionally break this // function and look at the tests that fail in ReactTransition-test.js. Try // commenting out one of the conditions below. var rootEntangledLanes = (root.entangledLanes |= entangledLanes); var entanglements = root.entanglements; var lanes = rootEntangledLanes; while (lanes) { var index = pickArbitraryLaneIndex(lanes); var lane = 1 << index; if ( // Is this one of the newly entangled lanes? (lane & entangledLanes) | // Is this lane transitively entangled with the newly entangled lanes? (entanglements[index] & entangledLanes) ) { entanglements[index] |= entangledLanes; } lanes &= ~lane; } } function getBumpedLaneForHydration(root, renderLanes) { var renderLane = getHighestPriorityLane(renderLanes); var lane; switch (renderLane) { case InputContinuousLane: lane = InputContinuousHydrationLane; break; case DefaultLane: lane = DefaultHydrationLane; break; case TransitionLane1: case TransitionLane2: case TransitionLane3: case TransitionLane4: case TransitionLane5: case TransitionLane6: case TransitionLane7: case TransitionLane8: case TransitionLane9: case TransitionLane10: case TransitionLane11: case TransitionLane12: case TransitionLane13: case TransitionLane14: case TransitionLane15: case TransitionLane16: case RetryLane1: case RetryLane2: case RetryLane3: case RetryLane4: case RetryLane5: lane = TransitionHydrationLane; break; case IdleLane: lane = IdleHydrationLane; break; default: // Everything else is already either a hydration lane, or shouldn't // be retried at a hydration lane. lane = NoLane; break; } // Check if the lane we chose is suspended. If so, that indicates that we // already attempted and failed to hydrate at that level. Also check if we're // already rendering that lane, which is rare but could happen. if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { // Give up trying to hydrate and fall back to client render. return NoLane; } return lane; } function addFiberToLanesMap(root, fiber, lanes) { if (!isDevToolsPresent) { return; } var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; while (lanes > 0) { var index = laneToIndex(lanes); var lane = 1 << index; var updaters = pendingUpdatersLaneMap[index]; updaters.add(fiber); lanes &= ~lane; } } function movePendingFibersToMemoized(root, lanes) { if (!isDevToolsPresent) { return; } var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; var memoizedUpdaters = root.memoizedUpdaters; while (lanes > 0) { var index = laneToIndex(lanes); var lane = 1 << index; var updaters = pendingUpdatersLaneMap[index]; if (updaters.size > 0) { updaters.forEach(function(fiber) { var alternate = fiber.alternate; if (alternate === null || !memoizedUpdaters.has(alternate)) { memoizedUpdaters.add(fiber); } }); updaters.clear(); } lanes &= ~lane; } } function getTransitionsForLanes(root, lanes) { { return null; } } var DiscreteEventPriority = SyncLane; var ContinuousEventPriority = InputContinuousLane; var DefaultEventPriority = DefaultLane; var IdleEventPriority = IdleLane; var currentUpdatePriority = NoLane; function getCurrentUpdatePriority() { return currentUpdatePriority; } function setCurrentUpdatePriority(newPriority) { currentUpdatePriority = newPriority; } function higherEventPriority(a, b) { return a !== 0 && a < b ? a : b; } function lowerEventPriority(a, b) { return a === 0 || a > b ? a : b; } function isHigherEventPriority(a, b) { return a !== 0 && a < b; } function lanesToEventPriority(lanes) { var lane = getHighestPriorityLane(lanes); if (!isHigherEventPriority(DiscreteEventPriority, lane)) { return DiscreteEventPriority; } if (!isHigherEventPriority(ContinuousEventPriority, lane)) { return ContinuousEventPriority; } if (includesNonIdleWork(lane)) { return DefaultEventPriority; } return IdleEventPriority; } // Renderers that don't support hydration // can re-export everything from this module. function shim() { throw new Error( "The current renderer does not support hydration. " + "This error is likely caused by a bug in React. " + "Please file an issue." ); } // Hydration (when unsupported) var isSuspenseInstancePending = shim; var isSuspenseInstanceFallback = shim; var getSuspenseInstanceFallbackErrorDetails = shim; var registerSuspenseInstanceRetry = shim; var hydrateTextInstance = shim; var clearSuspenseBoundary = shim; var clearSuspenseBoundaryFromContainer = shim; var errorHydratingContainer = shim; var getViewConfigForType = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.get; var UPDATE_SIGNAL = {}; { Object.freeze(UPDATE_SIGNAL); } // Counter for uniquely identifying views. // % 10 === 1 means it is a rootTag. // % 2 === 0 means it is a Fabric tag. var nextReactTag = 3; function allocateTag() { var tag = nextReactTag; if (tag % 10 === 1) { tag += 2; } nextReactTag = tag + 2; return tag; } function recursivelyUncacheFiberNode(node) { if (typeof node === "number") { // Leaf node (eg text) uncacheFiberNode(node); } else { uncacheFiberNode(node._nativeTag); node._children.forEach(recursivelyUncacheFiberNode); } } function appendInitialChild(parentInstance, child) { parentInstance._children.push(child); } function createInstance( type, props, rootContainerInstance, hostContext, internalInstanceHandle ) { var tag = allocateTag(); var viewConfig = getViewConfigForType(type); { for (var key in viewConfig.validAttributes) { if (props.hasOwnProperty(key)) { ReactNativePrivateInterface.deepFreezeAndThrowOnMutationInDev( props[key] ); } } } var updatePayload = create(props, viewConfig.validAttributes); ReactNativePrivateInterface.UIManager.createView( tag, // reactTag viewConfig.uiViewClassName, // viewName rootContainerInstance, // rootTag updatePayload // props ); var component = new ReactNativeFiberHostComponent( tag, viewConfig, internalInstanceHandle ); precacheFiberNode(internalInstanceHandle, tag); updateFiberProps(tag, props); // Not sure how to avoid this cast. Flow is okay if the component is defined // in the same file but if it's external it can't see the types. return component; } function createTextInstance( text, rootContainerInstance, hostContext, internalInstanceHandle ) { if (!hostContext.isInAParentText) { throw new Error("Text strings must be rendered within a component."); } var tag = allocateTag(); ReactNativePrivateInterface.UIManager.createView( tag, // reactTag "RCTRawText", // viewName rootContainerInstance, // rootTag { text: text } // props ); precacheFiberNode(internalInstanceHandle, tag); return tag; } function finalizeInitialChildren( parentInstance, type, props, rootContainerInstance, hostContext ) { // Don't send a no-op message over the bridge. if (parentInstance._children.length === 0) { return false; } // Map from child objects to native tags. // Either way we need to pass a copy of the Array to prevent it from being frozen. var nativeTags = parentInstance._children.map(function(child) { return typeof child === "number" ? child // Leaf node (eg text) : child._nativeTag; }); ReactNativePrivateInterface.UIManager.setChildren( parentInstance._nativeTag, // containerTag nativeTags // reactTags ); return false; } function getRootHostContext(rootContainerInstance) { return { isInAParentText: false }; } function getChildHostContext(parentHostContext, type, rootContainerInstance) { var prevIsInAParentText = parentHostContext.isInAParentText; var isInAParentText = type === "AndroidTextInput" || // Android type === "RCTMultilineTextInputView" || // iOS type === "RCTSinglelineTextInputView" || // iOS type === "RCTText" || type === "RCTVirtualText"; if (prevIsInAParentText !== isInAParentText) { return { isInAParentText: isInAParentText }; } else { return parentHostContext; } } function getPublicInstance(instance) { return instance; } function prepareForCommit(containerInfo) { // Noop return null; } function prepareUpdate( instance, type, oldProps, newProps, rootContainerInstance, hostContext ) { return UPDATE_SIGNAL; } function resetAfterCommit(containerInfo) { // Noop } var scheduleTimeout = setTimeout; var cancelTimeout = clearTimeout; var noTimeout = -1; function shouldSetTextContent(type, props) { // TODO (bvaughn) Revisit this decision. // Always returning false simplifies the createInstance() implementation, // But creates an additional child Fiber for raw text children. // No additional native views are created though. // It's not clear to me which is better so I'm deferring for now. // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 return false; } function getCurrentEventPriority() { return DefaultEventPriority; } // ------------------- function appendChild(parentInstance, child) { var childTag = typeof child === "number" ? child : child._nativeTag; var children = parentInstance._children; var index = children.indexOf(child); if (index >= 0) { children.splice(index, 1); children.push(child); ReactNativePrivateInterface.UIManager.manageChildren( parentInstance._nativeTag, // containerTag [index], // moveFromIndices [children.length - 1], // moveToIndices [], // addChildReactTags [], // addAtIndices [] // removeAtIndices ); } else { children.push(child); ReactNativePrivateInterface.UIManager.manageChildren( parentInstance._nativeTag, // containerTag [], // moveFromIndices [], // moveToIndices [childTag], // addChildReactTags [children.length - 1], // addAtIndices [] // removeAtIndices ); } } function appendChildToContainer(parentInstance, child) { var childTag = typeof child === "number" ? child : child._nativeTag; ReactNativePrivateInterface.UIManager.setChildren( parentInstance, // containerTag [childTag] // reactTags ); } function commitTextUpdate(textInstance, oldText, newText) { ReactNativePrivateInterface.UIManager.updateView( textInstance, // reactTag "RCTRawText", // viewName { text: newText } // props ); } function commitUpdate( instance, updatePayloadTODO, type, oldProps, newProps, internalInstanceHandle ) { var viewConfig = instance.viewConfig; updateFiberProps(instance._nativeTag, newProps); var updatePayload = diff(oldProps, newProps, viewConfig.validAttributes); // Avoid the overhead of bridge calls if there's no update. // This is an expensive no-op for Android, and causes an unnecessary // view invalidation for certain components (eg RCTTextInput) on iOS. if (updatePayload != null) { ReactNativePrivateInterface.UIManager.updateView( instance._nativeTag, // reactTag viewConfig.uiViewClassName, // viewName updatePayload // props ); } } function insertBefore(parentInstance, child, beforeChild) { var children = parentInstance._children; var index = children.indexOf(child); // Move existing child or add new child? if (index >= 0) { children.splice(index, 1); var beforeChildIndex = children.indexOf(beforeChild); children.splice(beforeChildIndex, 0, child); ReactNativePrivateInterface.UIManager.manageChildren( parentInstance._nativeTag, // containerID [index], // moveFromIndices [beforeChildIndex], // moveToIndices [], // addChildReactTags [], // addAtIndices [] // removeAtIndices ); } else { var _beforeChildIndex = children.indexOf(beforeChild); children.splice(_beforeChildIndex, 0, child); var childTag = typeof child === "number" ? child : child._nativeTag; ReactNativePrivateInterface.UIManager.manageChildren( parentInstance._nativeTag, // containerID [], // moveFromIndices [], // moveToIndices [childTag], // addChildReactTags [_beforeChildIndex], // addAtIndices [] // removeAtIndices ); } } function insertInContainerBefore(parentInstance, child, beforeChild) { // TODO (bvaughn): Remove this check when... // We create a wrapper object for the container in ReactNative render() // Or we refactor to remove wrapper objects entirely. // For more info on pros/cons see PR #8560 description. if (typeof parentInstance === "number") { throw new Error("Container does not support insertBefore operation"); } } function removeChild(parentInstance, child) { recursivelyUncacheFiberNode(child); var children = parentInstance._children; var index = children.indexOf(child); children.splice(index, 1); ReactNativePrivateInterface.UIManager.manageChildren( parentInstance._nativeTag, // containerID [], // moveFromIndices [], // moveToIndices [], // addChildReactTags [], // addAtIndices [index] // removeAtIndices ); } function removeChildFromContainer(parentInstance, child) { recursivelyUncacheFiberNode(child); ReactNativePrivateInterface.UIManager.manageChildren( parentInstance, // containerID [], // moveFromIndices [], // moveToIndices [], // addChildReactTags [], // addAtIndices [0] // removeAtIndices ); } function resetTextContent(instance) { // Noop } function hideInstance(instance) { var viewConfig = instance.viewConfig; var updatePayload = create( { style: { display: "none" } }, viewConfig.validAttributes ); ReactNativePrivateInterface.UIManager.updateView( instance._nativeTag, viewConfig.uiViewClassName, updatePayload ); } function hideTextInstance(textInstance) { throw new Error("Not yet implemented."); } function unhideInstance(instance, props) { var viewConfig = instance.viewConfig; var updatePayload = diff( assign({}, props, { style: [ props.style, { display: "none" } ] }), props, viewConfig.validAttributes ); ReactNativePrivateInterface.UIManager.updateView( instance._nativeTag, viewConfig.uiViewClassName, updatePayload ); } function clearContainer(container) { // TODO Implement this for React Native // UIManager does not expose a "remove all" type method. } function unhideTextInstance(textInstance, text) { throw new Error("Not yet implemented."); } function preparePortalMount(portalInstance) { // noop } var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher; function describeBuiltInComponentFrame(name, source, ownerFn) { { var ownerName = null; if (ownerFn) { ownerName = ownerFn.displayName || ownerFn.name || null; } return describeComponentFrame(name, source, ownerName); } } var componentFrameCache; { var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; componentFrameCache = new PossiblyWeakMap(); } var BEFORE_SLASH_RE = /^(.*)[\\\/]/; function describeComponentFrame(name, source, ownerName) { var sourceInfo = ""; if (source) { var path = source.fileName; var fileName = path.replace(BEFORE_SLASH_RE, ""); // In DEV, include code for a common special case: // prefer "folder/index.js" instead of just "index.js". if (/^index\./.test(fileName)) { var match = path.match(BEFORE_SLASH_RE); if (match) { var pathBeforeSlash = match[1]; if (pathBeforeSlash) { var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, ""); fileName = folderName + "/" + fileName; } } } sourceInfo = " (at " + fileName + ":" + source.lineNumber + ")"; } else if (ownerName) { sourceInfo = " (created by " + ownerName + ")"; } return "\n in " + (name || "Unknown") + sourceInfo; } function describeClassComponentFrame(ctor, source, ownerFn) { { return describeFunctionComponentFrame(ctor, source, ownerFn); } } function describeFunctionComponentFrame(fn, source, ownerFn) { { if (!fn) { return ""; } var name = fn.displayName || fn.name || null; var ownerName = null; if (ownerFn) { ownerName = ownerFn.displayName || ownerFn.name || null; } return describeComponentFrame(name, source, ownerName); } } function describeUnknownElementTypeFrameInDEV(type, source, ownerFn) { if (type == null) { return ""; } if (typeof type === "function") { { return describeFunctionComponentFrame(type, source, ownerFn); } } if (typeof type === "string") { return describeBuiltInComponentFrame(type, source, ownerFn); } switch (type) { case REACT_SUSPENSE_TYPE: return describeBuiltInComponentFrame("Suspense", source, ownerFn); case REACT_SUSPENSE_LIST_TYPE: return describeBuiltInComponentFrame("SuspenseList", source, ownerFn); } if (typeof type === "object") { switch (type.$$typeof) { case REACT_FORWARD_REF_TYPE: return describeFunctionComponentFrame(type.render, source, ownerFn); case REACT_MEMO_TYPE: // Memo may contain any component type so we recursively resolve it. return describeUnknownElementTypeFrameInDEV(type.type, source, ownerFn); case REACT_LAZY_TYPE: { var lazyComponent = type; var payload = lazyComponent._payload; var init = lazyComponent._init; try { // Lazy may contain any component type so we recursively resolve it. return describeUnknownElementTypeFrameInDEV( init(payload), source, ownerFn ); } catch (x) {} } } } return ""; } var hasOwnProperty = Object.prototype.hasOwnProperty; var loggedTypeFailures = {}; var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame; function setCurrentlyValidatingElement(element) { { if (element) { var owner = element._owner; var stack = describeUnknownElementTypeFrameInDEV( element.type, element._source, owner ? owner.type : null ); ReactDebugCurrentFrame.setExtraStackFrame(stack); } else { ReactDebugCurrentFrame.setExtraStackFrame(null); } } } function checkPropTypes(typeSpecs, values, location, componentName, element) { { // $FlowFixMe This is okay but Flow doesn't know it. var has = Function.call.bind(hasOwnProperty); for (var typeSpecName in typeSpecs) { if (has(typeSpecs, typeSpecName)) { var error$1 = void 0; // Prop type validation may throw. In case they do, we don't want to // fail the render phase where it didn't fail before. So we log it. // After these have been cleaned up, we'll let them throw. try { // This is intentionally an invariant that gets caught. It's the same // behavior as without this statement except with a better message. if (typeof typeSpecs[typeSpecName] !== "function") { // eslint-disable-next-line react-internal/prod-error-codes var err = Error( (componentName || "React class") + ": " + location + " type `" + typeSpecName + "` is invalid; " + "it must be a function, usually from the `prop-types` package, but received `" + typeof typeSpecs[typeSpecName] + "`." + "This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`." ); err.name = "Invariant Violation"; throw err; } error$1 = typeSpecs[typeSpecName]( values, typeSpecName, componentName, location, null, "SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED" ); } catch (ex) { error$1 = ex; } if (error$1 && !(error$1 instanceof Error)) { setCurrentlyValidatingElement(element); error( "%s: type specification of %s" + " `%s` is invalid; the type checker " + "function must return `null` or an `Error` but returned a %s. " + "You may have forgotten to pass an argument to the type checker " + "creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and " + "shape all require an argument).", componentName || "React class", location, typeSpecName, typeof error$1 ); setCurrentlyValidatingElement(null); } if ( error$1 instanceof Error && !(error$1.message in loggedTypeFailures) ) { // Only monitor this failure once because there tends to be a lot of the // same error. loggedTypeFailures[error$1.message] = true; setCurrentlyValidatingElement(element); error("Failed %s type: %s", location, error$1.message); setCurrentlyValidatingElement(null); } } } } } var valueStack = []; var fiberStack; { fiberStack = []; } var index = -1; function createCursor(defaultValue) { return { current: defaultValue }; } function pop(cursor, fiber) { if (index < 0) { { error("Unexpected pop."); } return; } { if (fiber !== fiberStack[index]) { error("Unexpected Fiber popped."); } } cursor.current = valueStack[index]; valueStack[index] = null; { fiberStack[index] = null; } index--; } function push(cursor, value, fiber) { index++; valueStack[index] = cursor.current; { fiberStack[index] = fiber; } cursor.current = value; } var warnedAboutMissingGetChildContext; { warnedAboutMissingGetChildContext = {}; } var emptyContextObject = {}; { Object.freeze(emptyContextObject); } // A cursor to the current merged context object on the stack. var contextStackCursor = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. // We use this to get access to the parent context after we have already // pushed the next context provider, and now need to merge their contexts. var previousContext = emptyContextObject; function getUnmaskedContext( workInProgress, Component, didPushOwnContextIfProvider ) { { if (didPushOwnContextIfProvider && isContextProvider(Component)) { // If the fiber is a context provider itself, when we read its context // we may have already pushed its own child context on the stack. A context // provider should not "see" its own child context. Therefore we read the // previous (parent) context instead for a context provider. return previousContext; } return contextStackCursor.current; } } function cacheContext(workInProgress, unmaskedContext, maskedContext) { { var instance = workInProgress.stateNode; instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; instance.__reactInternalMemoizedMaskedChildContext = maskedContext; } } function getMaskedContext(workInProgress, unmaskedContext) { { var type = workInProgress.type; var contextTypes = type.contextTypes; if (!contextTypes) { return emptyContextObject; } // Avoid recreating masked context unless unmasked context has changed. // Failing to do this will result in unnecessary calls to componentWillReceiveProps. // This may trigger infinite loops if componentWillReceiveProps calls setState. var instance = workInProgress.stateNode; if ( instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext ) { return instance.__reactInternalMemoizedMaskedChildContext; } var context = {}; for (var key in contextTypes) { context[key] = unmaskedContext[key]; } { var name = getComponentNameFromFiber(workInProgress) || "Unknown"; checkPropTypes(contextTypes, context, "context", name); } // Cache unmasked context so we can avoid recreating masked context unless necessary. // Context is created before the class component is instantiated so check for instance. if (instance) { cacheContext(workInProgress, unmaskedContext, context); } return context; } } function hasContextChanged() { { return didPerformWorkStackCursor.current; } } function isContextProvider(type) { { var childContextTypes = type.childContextTypes; return childContextTypes !== null && childContextTypes !== undefined; } } function popContext(fiber) { { pop(didPerformWorkStackCursor, fiber); pop(contextStackCursor, fiber); } } function popTopLevelContextObject(fiber) { { pop(didPerformWorkStackCursor, fiber); pop(contextStackCursor, fiber); } } function pushTopLevelContextObject(fiber, context, didChange) { { if (contextStackCursor.current !== emptyContextObject) { throw new Error( "Unexpected context found on stack. " + "This error is likely caused by a bug in React. Please file an issue." ); } push(contextStackCursor, context, fiber); push(didPerformWorkStackCursor, didChange, fiber); } } function processChildContext(fiber, type, parentContext) { { var instance = fiber.stateNode; var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. // It has only been added in Fiber to match the (unintentional) behavior in Stack. if (typeof instance.getChildContext !== "function") { { var componentName = getComponentNameFromFiber(fiber) || "Unknown"; if (!warnedAboutMissingGetChildContext[componentName]) { warnedAboutMissingGetChildContext[componentName] = true; error( "%s.childContextTypes is specified but there is no getChildContext() method " + "on the instance. You can either define getChildContext() on %s or remove " + "childContextTypes from it.", componentName, componentName ); } } return parentContext; } var childContext = instance.getChildContext(); for (var contextKey in childContext) { if (!(contextKey in childContextTypes)) { throw new Error( (getComponentNameFromFiber(fiber) || "Unknown") + '.getChildContext(): key "' + contextKey + '" is not defined in childContextTypes.' ); } } { var name = getComponentNameFromFiber(fiber) || "Unknown"; checkPropTypes(childContextTypes, childContext, "child context", name); } return assign({}, parentContext, childContext); } } function pushContextProvider(workInProgress) { { var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. // If the instance does not exist yet, we will push null at first, // and replace it on the stack later when invalidating the context. var memoizedMergedChildContext = (instance && instance.__reactInternalMemoizedMergedChildContext) || emptyContextObject; // Remember the parent context so we can merge with it later. // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. previousContext = contextStackCursor.current; push(contextStackCursor, memoizedMergedChildContext, workInProgress); push( didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress ); return true; } } function invalidateContextProvider(workInProgress, type, didChange) { { var instance = workInProgress.stateNode; if (!instance) { throw new Error( "Expected to have an instance by this point. " + "This error is likely caused by a bug in React. Please file an issue." ); } if (didChange) { // Merge parent and own context. // Skip this if we're not updating due to sCU. // This avoids unnecessarily recomputing memoized values. var mergedContext = processChildContext( workInProgress, type, previousContext ); instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. // It is important to unwind the context in the reverse order. pop(didPerformWorkStackCursor, workInProgress); pop(contextStackCursor, workInProgress); // Now push the new context and mark that it has changed. push(contextStackCursor, mergedContext, workInProgress); push(didPerformWorkStackCursor, didChange, workInProgress); } else { pop(didPerformWorkStackCursor, workInProgress); push(didPerformWorkStackCursor, didChange, workInProgress); } } } function findCurrentUnmaskedContext(fiber) { { // Currently this is only used with renderSubtreeIntoContainer; not sure if it // makes sense elsewhere if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { throw new Error( "Expected subtree parent to be a mounted class component. " + "This error is likely caused by a bug in React. Please file an issue." ); } var node = fiber; do { switch (node.tag) { case HostRoot: return node.stateNode.context; case ClassComponent: { var Component = node.type; if (isContextProvider(Component)) { return node.stateNode.__reactInternalMemoizedMergedChildContext; } break; } } node = node.return; } while (node !== null); throw new Error( "Found unexpected detached subtree parent. " + "This error is likely caused by a bug in React. Please file an issue." ); } } var LegacyRoot = 0; var ConcurrentRoot = 1; /** * inlined Object.is polyfill to avoid requiring consumers ship their own * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is */ function is(x, y) { return ( (x === y && (x !== 0 || 1 / x === 1 / y)) || (x !== x && y !== y) // eslint-disable-line no-self-compare ); } var objectIs = typeof Object.is === "function" ? Object.is : is; var syncQueue = null; var includesLegacySyncCallbacks = false; var isFlushingSyncQueue = false; function scheduleSyncCallback(callback) { // Push this callback into an internal queue. We'll flush these either in // the next tick, or earlier if something calls `flushSyncCallbackQueue`. if (syncQueue === null) { syncQueue = [callback]; } else { // Push onto existing queue. Don't need to schedule a callback because // we already scheduled one when we created the queue. syncQueue.push(callback); } } function scheduleLegacySyncCallback(callback) { includesLegacySyncCallbacks = true; scheduleSyncCallback(callback); } function flushSyncCallbacksOnlyInLegacyMode() { // Only flushes the queue if there's a legacy sync callback scheduled. // TODO: There's only a single type of callback: performSyncOnWorkOnRoot. So // it might make more sense for the queue to be a list of roots instead of a // list of generic callbacks. Then we can have two: one for legacy roots, one // for concurrent roots. And this method would only flush the legacy ones. if (includesLegacySyncCallbacks) { flushSyncCallbacks(); } } function flushSyncCallbacks() { if (!isFlushingSyncQueue && syncQueue !== null) { // Prevent re-entrance. isFlushingSyncQueue = true; var i = 0; var previousUpdatePriority = getCurrentUpdatePriority(); try { var isSync = true; var queue = syncQueue; // TODO: Is this necessary anymore? The only user code that runs in this // queue is in the render or commit phases. setCurrentUpdatePriority(DiscreteEventPriority); for (; i < queue.length; i++) { var callback = queue[i]; do { callback = callback(isSync); } while (callback !== null); } syncQueue = null; includesLegacySyncCallbacks = false; } catch (error) { // If something throws, leave the remaining callbacks on the queue. if (syncQueue !== null) { syncQueue = syncQueue.slice(i + 1); } // Resume flushing in the next tick scheduleCallback(ImmediatePriority, flushSyncCallbacks); throw error; } finally { setCurrentUpdatePriority(previousUpdatePriority); isFlushingSyncQueue = false; } } return null; } // This is imported by the event replaying implementation in React DOM. It's // in a separate file to break a circular dependency between the renderer and // the reconciler. function isRootDehydrated(root) { var currentState = root.current.memoizedState; return currentState.isDehydrated; } // TODO: Use the unified fiber stack module instead of this local one? // Intentionally not using it yet to derisk the initial implementation, because // the way we push/pop these values is a bit unusual. If there's a mistake, I'd // rather the ids be wrong than crash the whole reconciler. var forkStack = []; var forkStackIndex = 0; var treeForkProvider = null; var treeForkCount = 0; var idStack = []; var idStackIndex = 0; var treeContextProvider = null; var treeContextId = 1; var treeContextOverflow = ""; function popTreeContext(workInProgress) { // Restore the previous values. // This is a bit more complicated than other context-like modules in Fiber // because the same Fiber may appear on the stack multiple times and for // different reasons. We have to keep popping until the work-in-progress is // no longer at the top of the stack. while (workInProgress === treeForkProvider) { treeForkProvider = forkStack[--forkStackIndex]; forkStack[forkStackIndex] = null; treeForkCount = forkStack[--forkStackIndex]; forkStack[forkStackIndex] = null; } while (workInProgress === treeContextProvider) { treeContextProvider = idStack[--idStackIndex]; idStack[idStackIndex] = null; treeContextOverflow = idStack[--idStackIndex]; idStack[idStackIndex] = null; treeContextId = idStack[--idStackIndex]; idStack[idStackIndex] = null; } } var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches // due to earlier mismatches or a suspended fiber. var didSuspendOrErrorDEV = false; // Hydration errors that were thrown inside this boundary var hydrationErrors = null; function didSuspendOrErrorWhileHydratingDEV() { { return didSuspendOrErrorDEV; } } function reenterHydrationStateFromDehydratedSuspenseInstance( fiber, suspenseInstance, treeContext ) { { return false; } } function prepareToHydrateHostInstance( fiber, rootContainerInstance, hostContext ) { { throw new Error( "Expected prepareToHydrateHostInstance() to never be called. " + "This error is likely caused by a bug in React. Please file an issue." ); } } function prepareToHydrateHostTextInstance(fiber) { { throw new Error( "Expected prepareToHydrateHostTextInstance() to never be called. " + "This error is likely caused by a bug in React. Please file an issue." ); } var shouldUpdate = hydrateTextInstance(); } function prepareToHydrateHostSuspenseInstance(fiber) { { throw new Error( "Expected prepareToHydrateHostSuspenseInstance() to never be called. " + "This error is likely caused by a bug in React. Please file an issue." ); } } function popHydrationState(fiber) { { return false; } } function upgradeHydrationErrorsToRecoverable() { if (hydrationErrors !== null) { // Successfully completed a forced client render. The errors that occurred // during the hydration attempt are now recovered. We will log them in // commit phase, once the entire tree has finished. queueRecoverableErrors(hydrationErrors); hydrationErrors = null; } } function getIsHydrating() { return isHydrating; } function queueHydrationError(error) { if (hydrationErrors === null) { hydrationErrors = [error]; } else { hydrationErrors.push(error); } } var ReactCurrentBatchConfig = ReactSharedInternals.ReactCurrentBatchConfig; var NoTransition = null; function requestCurrentTransition() { return ReactCurrentBatchConfig.transition; } /** * Performs equality by iterating through keys on an object and returning false * when any key has values which are not strictly equal between the arguments. * Returns true when the values of all keys are strictly equal. */ function shallowEqual(objA, objB) { if (objectIs(objA, objB)) { return true; } if ( typeof objA !== "object" || objA === null || typeof objB !== "object" || objB === null ) { return false; } var keysA = Object.keys(objA); var keysB = Object.keys(objB); if (keysA.length !== keysB.length) { return false; } // Test for A's keys different from B. for (var i = 0; i < keysA.length; i++) { var currentKey = keysA[i]; if ( !hasOwnProperty.call(objB, currentKey) || !objectIs(objA[currentKey], objB[currentKey]) ) { return false; } } return true; } function describeFiber(fiber) { var owner = fiber._debugOwner ? fiber._debugOwner.type : null; var source = fiber._debugSource; switch (fiber.tag) { case HostComponent: return describeBuiltInComponentFrame(fiber.type, source, owner); case LazyComponent: return describeBuiltInComponentFrame("Lazy", source, owner); case SuspenseComponent: return describeBuiltInComponentFrame("Suspense", source, owner); case SuspenseListComponent: return describeBuiltInComponentFrame("SuspenseList", source, owner); case FunctionComponent: case IndeterminateComponent: case SimpleMemoComponent: return describeFunctionComponentFrame(fiber.type, source, owner); case ForwardRef: return describeFunctionComponentFrame(fiber.type.render, source, owner); case ClassComponent: return describeClassComponentFrame(fiber.type, source, owner); default: return ""; } } function getStackByFiberInDevAndProd(workInProgress) { try { var info = ""; var node = workInProgress; do { info += describeFiber(node); node = node.return; } while (node); return info; } catch (x) { return "\nError generating stack: " + x.message + "\n" + x.stack; } } var ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame; var current = null; var isRendering = false; function getCurrentFiberOwnerNameInDevOrNull() { { if (current === null) { return null; } var owner = current._debugOwner; if (owner !== null && typeof owner !== "undefined") { return getComponentNameFromFiber(owner); } } return null; } function getCurrentFiberStackInDev() { { if (current === null) { return ""; } // Safe because if current fiber exists, we are reconciling, // and it is guaranteed to be the work-in-progress version. return getStackByFiberInDevAndProd(current); } } function resetCurrentFiber() { { ReactDebugCurrentFrame$1.getCurrentStack = null; current = null; isRendering = false; } } function setCurrentFiber(fiber) { { ReactDebugCurrentFrame$1.getCurrentStack = fiber === null ? null : getCurrentFiberStackInDev; current = fiber; isRendering = false; } } function getCurrentFiber() { { return current; } } function setIsRendering(rendering) { { isRendering = rendering; } } var ReactStrictModeWarnings = { recordUnsafeLifecycleWarnings: function(fiber, instance) {}, flushPendingUnsafeLifecycleWarnings: function() {}, recordLegacyContextWarning: function(fiber, instance) {}, flushLegacyContextWarning: function() {}, discardPendingWarnings: function() {} }; { var findStrictRoot = function(fiber) { var maybeStrictRoot = null; var node = fiber; while (node !== null) { if (node.mode & StrictLegacyMode) { maybeStrictRoot = node; } node = node.return; } return maybeStrictRoot; }; var setToSortedString = function(set) { var array = []; set.forEach(function(value) { array.push(value); }); return array.sort().join(", "); }; var pendingComponentWillMountWarnings = []; var pendingUNSAFE_ComponentWillMountWarnings = []; var pendingComponentWillReceivePropsWarnings = []; var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; var pendingComponentWillUpdateWarnings = []; var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. var didWarnAboutUnsafeLifecycles = new Set(); ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function( fiber, instance ) { // Dedupe strategy: Warn once per component. if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { return; } if ( typeof instance.componentWillMount === "function" && // Don't warn about react-lifecycles-compat polyfilled components. instance.componentWillMount.__suppressDeprecationWarning !== true ) { pendingComponentWillMountWarnings.push(fiber); } if ( fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillMount === "function" ) { pendingUNSAFE_ComponentWillMountWarnings.push(fiber); } if ( typeof instance.componentWillReceiveProps === "function" && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true ) { pendingComponentWillReceivePropsWarnings.push(fiber); } if ( fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillReceiveProps === "function" ) { pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); } if ( typeof instance.componentWillUpdate === "function" && instance.componentWillUpdate.__suppressDeprecationWarning !== true ) { pendingComponentWillUpdateWarnings.push(fiber); } if ( fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillUpdate === "function" ) { pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); } }; ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function() { // We do an initial pass to gather component names var componentWillMountUniqueNames = new Set(); if (pendingComponentWillMountWarnings.length > 0) { pendingComponentWillMountWarnings.forEach(function(fiber) { componentWillMountUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingComponentWillMountWarnings = []; } var UNSAFE_componentWillMountUniqueNames = new Set(); if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { pendingUNSAFE_ComponentWillMountWarnings.forEach(function(fiber) { UNSAFE_componentWillMountUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingUNSAFE_ComponentWillMountWarnings = []; } var componentWillReceivePropsUniqueNames = new Set(); if (pendingComponentWillReceivePropsWarnings.length > 0) { pendingComponentWillReceivePropsWarnings.forEach(function(fiber) { componentWillReceivePropsUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingComponentWillReceivePropsWarnings = []; } var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function(fiber) { UNSAFE_componentWillReceivePropsUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingUNSAFE_ComponentWillReceivePropsWarnings = []; } var componentWillUpdateUniqueNames = new Set(); if (pendingComponentWillUpdateWarnings.length > 0) { pendingComponentWillUpdateWarnings.forEach(function(fiber) { componentWillUpdateUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingComponentWillUpdateWarnings = []; } var UNSAFE_componentWillUpdateUniqueNames = new Set(); if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function(fiber) { UNSAFE_componentWillUpdateUniqueNames.add( getComponentNameFromFiber(fiber) || "Component" ); didWarnAboutUnsafeLifecycles.add(fiber.type); }); pendingUNSAFE_ComponentWillUpdateWarnings = []; } // Finally, we flush all the warnings // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' if (UNSAFE_componentWillMountUniqueNames.size > 0) { var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames); error( "Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + "\nPlease update the following components: %s", sortedNames ); } if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { var _sortedNames = setToSortedString( UNSAFE_componentWillReceivePropsUniqueNames ); error( "Using UNSAFE_componentWillReceiveProps in strict mode is not recommended " + "and may indicate bugs in your code. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move data fetching code or side effects to componentDidUpdate.\n" + "* If you're updating state whenever props change, " + "refactor your code to use memoization techniques or move it to " + "static getDerivedStateFromProps. Learn more at: https://reactjs.org/link/derived-state\n" + "\nPlease update the following components: %s", _sortedNames ); } if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { var _sortedNames2 = setToSortedString( UNSAFE_componentWillUpdateUniqueNames ); error( "Using UNSAFE_componentWillUpdate in strict mode is not recommended " + "and may indicate bugs in your code. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move data fetching code or side effects to componentDidUpdate.\n" + "\nPlease update the following components: %s", _sortedNames2 ); } if (componentWillMountUniqueNames.size > 0) { var _sortedNames3 = setToSortedString(componentWillMountUniqueNames); warn( "componentWillMount has been renamed, and is not recommended for use. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + "* Rename componentWillMount to UNSAFE_componentWillMount to suppress " + "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + "To rename all deprecated lifecycles to their new names, you can run " + "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + "\nPlease update the following components: %s", _sortedNames3 ); } if (componentWillReceivePropsUniqueNames.size > 0) { var _sortedNames4 = setToSortedString( componentWillReceivePropsUniqueNames ); warn( "componentWillReceiveProps has been renamed, and is not recommended for use. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move data fetching code or side effects to componentDidUpdate.\n" + "* If you're updating state whenever props change, refactor your " + "code to use memoization techniques or move it to " + "static getDerivedStateFromProps. Learn more at: https://reactjs.org/link/derived-state\n" + "* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress " + "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + "To rename all deprecated lifecycles to their new names, you can run " + "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + "\nPlease update the following components: %s", _sortedNames4 ); } if (componentWillUpdateUniqueNames.size > 0) { var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames); warn( "componentWillUpdate has been renamed, and is not recommended for use. " + "See https://reactjs.org/link/unsafe-component-lifecycles for details.\n\n" + "* Move data fetching code or side effects to componentDidUpdate.\n" + "* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress " + "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + "To rename all deprecated lifecycles to their new names, you can run " + "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + "\nPlease update the following components: %s", _sortedNames5 ); } }; var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. var didWarnAboutLegacyContext = new Set(); ReactStrictModeWarnings.recordLegacyContextWarning = function( fiber, instance ) { var strictRoot = findStrictRoot(fiber); if (strictRoot === null) { error( "Expected to find a StrictMode component in a strict mode tree. " + "This error is likely caused by a bug in React. Please file an issue." ); return; } // Dedup strategy: Warn once per component. if (didWarnAboutLegacyContext.has(fiber.type)) { return; } var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); if ( fiber.type.contextTypes != null || fiber.type.childContextTypes != null || (instance !== null && typeof instance.getChildContext === "function") ) { if (warningsForRoot === undefined) { warningsForRoot = []; pendingLegacyContextWarning.set(strictRoot, warningsForRoot); } warningsForRoot.push(fiber); } }; ReactStrictModeWarnings.flushLegacyContextWarning = function() { pendingLegacyContextWarning.forEach(function(fiberArray, strictRoot) { if (fiberArray.length === 0) { return; } var firstFiber = fiberArray[0]; var uniqueNames = new Set(); fiberArray.forEach(function(fiber) { uniqueNames.add(getComponentNameFromFiber(fiber) || "Component"); didWarnAboutLegacyContext.add(fiber.type); }); var sortedNames = setToSortedString(uniqueNames); try { setCurrentFiber(firstFiber); error( "Legacy context API has been detected within a strict-mode tree." + "\n\nThe old API will be supported in all 16.x releases, but applications " + "using it should migrate to the new version." + "\n\nPlease update the following components: %s" + "\n\nLearn more about this warning here: https://reactjs.org/link/legacy-context", sortedNames ); } finally { resetCurrentFiber(); } }); }; ReactStrictModeWarnings.discardPendingWarnings = function() { pendingComponentWillMountWarnings = []; pendingUNSAFE_ComponentWillMountWarnings = []; pendingComponentWillReceivePropsWarnings = []; pendingUNSAFE_ComponentWillReceivePropsWarnings = []; pendingComponentWillUpdateWarnings = []; pendingUNSAFE_ComponentWillUpdateWarnings = []; pendingLegacyContextWarning = new Map(); }; } /* * The `'' + value` pattern (used in in perf-sensitive code) throws for Symbol * and Temporal.* types. See https://github.com/facebook/react/pull/22064. * * The functions in this module will throw an easier-to-understand, * easier-to-debug exception with a clear errors message message explaining the * problem. (Instead of a confusing exception thrown inside the implementation * of the `value` object). */ // $FlowFixMe only called in DEV, so void return is not possible. function typeName(value) { { // toStringTag is needed for namespaced types like Temporal.Instant var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; var type = (hasToStringTag && value[Symbol.toStringTag]) || value.constructor.name || "Object"; return type; } } // $FlowFixMe only called in DEV, so void return is not possible. function willCoercionThrow(value) { { try { testStringCoercion(value); return false; } catch (e) { return true; } } } function testStringCoercion(value) { // If you ended up here by following an exception call stack, here's what's // happened: you supplied an object or symbol value to React (as a prop, key, // DOM attribute, CSS property, string ref, etc.) and when React tried to // coerce it to a string using `'' + value`, an exception was thrown. // // The most common types that will cause this exception are `Symbol` instances // and Temporal objects like `Temporal.Instant`. But any object that has a // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this // exception. (Library authors do this to prevent users from using built-in // numeric operators like `+` or comparison operators like `>=` because custom // methods are needed to perform accurate arithmetic or comparison.) // // To fix the problem, coerce this object or symbol value to a string before // passing it to React. The most reliable way is usually `String(value)`. // // To find which value is throwing, check the browser or debugger console. // Before this exception was thrown, there should be `console.error` output // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the // problem and how that type was used: key, atrribute, input value prop, etc. // In most cases, this console output also shows the component and its // ancestor components where the exception happened. // // eslint-disable-next-line react-internal/safe-string-coercion return "" + value; } function checkKeyStringCoercion(value) { { if (willCoercionThrow(value)) { error( "The provided key is an unsupported type %s." + " This value must be coerced to a string before before using it here.", typeName(value) ); return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } } } function checkPropStringCoercion(value, propName) { { if (willCoercionThrow(value)) { error( "The provided `%s` prop is an unsupported type %s." + " This value must be coerced to a string before before using it here.", propName, typeName(value) ); return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } } } function resolveDefaultProps(Component, baseProps) { if (Component && Component.defaultProps) { // Resolve default props. Taken from ReactElement var props = assign({}, baseProps); var defaultProps = Component.defaultProps; for (var propName in defaultProps) { if (props[propName] === undefined) { props[propName] = defaultProps[propName]; } } return props; } return baseProps; } var valueCursor = createCursor(null); var rendererSigil; { // Use this to detect multiple renderers using the same context rendererSigil = {}; } var currentlyRenderingFiber = null; var lastContextDependency = null; var lastFullyObservedContext = null; var isDisallowedContextReadInDEV = false; function resetContextDependencies() { // This is called right before React yields execution, to ensure `readContext` // cannot be called outside the render phase. currentlyRenderingFiber = null; lastContextDependency = null; lastFullyObservedContext = null; { isDisallowedContextReadInDEV = false; } } function enterDisallowedContextReadInDEV() { { isDisallowedContextReadInDEV = true; } } function exitDisallowedContextReadInDEV() { { isDisallowedContextReadInDEV = false; } } function pushProvider(providerFiber, context, nextValue) { { push(valueCursor, context._currentValue, providerFiber); context._currentValue = nextValue; { if ( context._currentRenderer !== undefined && context._currentRenderer !== null && context._currentRenderer !== rendererSigil ) { error( "Detected multiple renderers concurrently rendering the " + "same context provider. This is currently unsupported." ); } context._currentRenderer = rendererSigil; } } } function popProvider(context, providerFiber) { var currentValue = valueCursor.current; pop(valueCursor, providerFiber); { { context._currentValue = currentValue; } } } function scheduleContextWorkOnParentPath(parent, renderLanes, propagationRoot) { // Update the child lanes of all the ancestors, including the alternates. var node = parent; while (node !== null) { var alternate = node.alternate; if (!isSubsetOfLanes(node.childLanes, renderLanes)) { node.childLanes = mergeLanes(node.childLanes, renderLanes); if (alternate !== null) { alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); } } else if ( alternate !== null && !isSubsetOfLanes(alternate.childLanes, renderLanes) ) { alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); } if (node === propagationRoot) { break; } node = node.return; } { if (node !== propagationRoot) { error( "Expected to find the propagation root when scheduling context work. " + "This error is likely caused by a bug in React. Please file an issue." ); } } } function propagateContextChange(workInProgress, context, renderLanes) { { propagateContextChange_eager(workInProgress, context, renderLanes); } } function propagateContextChange_eager(workInProgress, context, renderLanes) { var fiber = workInProgress.child; if (fiber !== null) { // Set the return pointer of the child to the work-in-progress fiber. fiber.return = workInProgress; } while (fiber !== null) { var nextFiber = void 0; // Visit this fiber. var list = fiber.dependencies; if (list !== null) { nextFiber = fiber.child; var dependency = list.firstContext; while (dependency !== null) { // Check if the context matches. if (dependency.context === context) { // Match! Schedule an update on this fiber. if (fiber.tag === ClassComponent) { // Schedule a force update on the work-in-progress. var lane = pickArbitraryLane(renderLanes); var update = createUpdate(NoTimestamp, lane); update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the // update to the current fiber, too, which means it will persist even if // this render is thrown away. Since it's a race condition, not sure it's // worth fixing. // Inlined `enqueueUpdate` to remove interleaved update check var updateQueue = fiber.updateQueue; if (updateQueue === null); else { var sharedQueue = updateQueue.shared; var pending = sharedQueue.pending; if (pending === null) { // This is the first update. Create a circular list. update.next = update; } else { update.next = pending.next; pending.next = update; } sharedQueue.pending = update; } } fiber.lanes = mergeLanes(fiber.lanes, renderLanes); var alternate = fiber.alternate; if (alternate !== null) { alternate.lanes = mergeLanes(alternate.lanes, renderLanes); } scheduleContextWorkOnParentPath( fiber.return, renderLanes, workInProgress ); // Mark the updated lanes on the list, too. list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the // dependency list. break; } dependency = dependency.next; } } else if (fiber.tag === ContextProvider) { // Don't scan deeper if this is a matching provider nextFiber = fiber.type === workInProgress.type ? null : fiber.child; } else if (fiber.tag === DehydratedFragment) { // If a dehydrated suspense boundary is in this subtree, we don't know // if it will have any context consumers in it. The best we can do is // mark it as having updates. var parentSuspense = fiber.return; if (parentSuspense === null) { throw new Error( "We just came from a parent so we must have had a parent. This is a bug in React." ); } parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); var _alternate = parentSuspense.alternate; if (_alternate !== null) { _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); } // This is intentionally passing this fiber as the parent // because we want to schedule this fiber as having work // on its children. We'll use the childLanes on // this fiber to indicate that a context has changed. scheduleContextWorkOnParentPath( parentSuspense, renderLanes, workInProgress ); nextFiber = fiber.sibling; } else { // Traverse down. nextFiber = fiber.child; } if (nextFiber !== null) { // Set the return pointer of the child to the work-in-progress fiber. nextFiber.return = fiber; } else { // No child. Traverse to next sibling. nextFiber = fiber; while (nextFiber !== null) { if (nextFiber === workInProgress) { // We're back to the root of this subtree. Exit. nextFiber = null; break; } var sibling = nextFiber.sibling; if (sibling !== null) { // Set the return pointer of the sibling to the work-in-progress fiber. sibling.return = nextFiber.return; nextFiber = sibling; break; } // No more siblings. Traverse up. nextFiber = nextFiber.return; } } fiber = nextFiber; } } function prepareToReadContext(workInProgress, renderLanes) { currentlyRenderingFiber = workInProgress; lastContextDependency = null; lastFullyObservedContext = null; var dependencies = workInProgress.dependencies; if (dependencies !== null) { { var firstContext = dependencies.firstContext; if (firstContext !== null) { if (includesSomeLane(dependencies.lanes, renderLanes)) { // Context list has a pending update. Mark that this fiber performed work. markWorkInProgressReceivedUpdate(); } // Reset the work-in-progress list dependencies.firstContext = null; } } } } function readContext(context) { { // This warning would fire if you read context inside a Hook like useMemo. // Unlike the class check below, it's not enforced in production for perf. if (isDisallowedContextReadInDEV) { error( "Context can only be read while React is rendering. " + "In classes, you can read it in the render method or getDerivedStateFromProps. " + "In function components, you can read it directly in the function body, but not " + "inside Hooks like useReducer() or useMemo()." ); } } var value = context._currentValue; if (lastFullyObservedContext === context); else { var contextItem = { context: context, memoizedValue: value, next: null }; if (lastContextDependency === null) { if (currentlyRenderingFiber === null) { throw new Error( "Context can only be read while React is rendering. " + "In classes, you can read it in the render method or getDerivedStateFromProps. " + "In function components, you can read it directly in the function body, but not " + "inside Hooks like useReducer() or useMemo()." ); } // This is the first dependency for this component. Create a new list. lastContextDependency = contextItem; currentlyRenderingFiber.dependencies = { lanes: NoLanes, firstContext: contextItem }; } else { // Append a new context item. lastContextDependency = lastContextDependency.next = contextItem; } } return value; } // render. When this render exits, either because it finishes or because it is // interrupted, the interleaved updates will be transferred onto the main part // of the queue. var concurrentQueues = null; function pushConcurrentUpdateQueue(queue) { if (concurrentQueues === null) { concurrentQueues = [queue]; } else { concurrentQueues.push(queue); } } function finishQueueingConcurrentUpdates() { // Transfer the interleaved updates onto the main queue. Each queue has a // `pending` field and an `interleaved` field. When they are not null, they // point to the last node in a circular linked list. We need to append the // interleaved list to the end of the pending list by joining them into a // single, circular list. if (concurrentQueues !== null) { for (var i = 0; i < concurrentQueues.length; i++) { var queue = concurrentQueues[i]; var lastInterleavedUpdate = queue.interleaved; if (lastInterleavedUpdate !== null) { queue.interleaved = null; var firstInterleavedUpdate = lastInterleavedUpdate.next; var lastPendingUpdate = queue.pending; if (lastPendingUpdate !== null) { var firstPendingUpdate = lastPendingUpdate.next; lastPendingUpdate.next = firstInterleavedUpdate; lastInterleavedUpdate.next = firstPendingUpdate; } queue.pending = lastInterleavedUpdate; } } concurrentQueues = null; } } function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { var interleaved = queue.interleaved; if (interleaved === null) { // This is the first update. Create a circular list. update.next = update; // At the end of the current render, this queue's interleaved updates will // be transferred to the pending queue. pushConcurrentUpdateQueue(queue); } else { update.next = interleaved.next; interleaved.next = update; } queue.interleaved = update; return markUpdateLaneFromFiberToRoot(fiber, lane); } function enqueueConcurrentHookUpdateAndEagerlyBailout( fiber, queue, update, lane ) { var interleaved = queue.interleaved; if (interleaved === null) { // This is the first update. Create a circular list. update.next = update; // At the end of the current render, this queue's interleaved updates will // be transferred to the pending queue. pushConcurrentUpdateQueue(queue); } else { update.next = interleaved.next; interleaved.next = update; } queue.interleaved = update; } function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { var interleaved = queue.interleaved; if (interleaved === null) { // This is the first update. Create a circular list. update.next = update; // At the end of the current render, this queue's interleaved updates will // be transferred to the pending queue. pushConcurrentUpdateQueue(queue); } else { update.next = interleaved.next; interleaved.next = update; } queue.interleaved = update; return markUpdateLaneFromFiberToRoot(fiber, lane); } function enqueueConcurrentRenderForLane(fiber, lane) { return markUpdateLaneFromFiberToRoot(fiber, lane); } // Calling this function outside this module should only be done for backwards // compatibility and should always be accompanied by a warning. var unsafe_markUpdateLaneFromFiberToRoot = markUpdateLaneFromFiberToRoot; function markUpdateLaneFromFiberToRoot(sourceFiber, lane) { // Update the source fiber's lanes sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); var alternate = sourceFiber.alternate; if (alternate !== null) { alternate.lanes = mergeLanes(alternate.lanes, lane); } { if ( alternate === null && (sourceFiber.flags & (Placement | Hydrating)) !== NoFlags ) { warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); } } // Walk the parent path to the root and update the child lanes. var node = sourceFiber; var parent = sourceFiber.return; while (parent !== null) { parent.childLanes = mergeLanes(parent.childLanes, lane); alternate = parent.alternate; if (alternate !== null) { alternate.childLanes = mergeLanes(alternate.childLanes, lane); } else { { if ((parent.flags & (Placement | Hydrating)) !== NoFlags) { warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); } } } node = parent; parent = parent.return; } if (node.tag === HostRoot) { var root = node.stateNode; return root; } else { return null; } } var UpdateState = 0; var ReplaceState = 1; var ForceUpdate = 2; var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. // It should only be read right after calling `processUpdateQueue`, via // `checkHasForceUpdateAfterProcessing`. var hasForceUpdate = false; var didWarnUpdateInsideUpdate; var currentlyProcessingQueue; { didWarnUpdateInsideUpdate = false; currentlyProcessingQueue = null; } function initializeUpdateQueue(fiber) { var queue = { baseState: fiber.memoizedState, firstBaseUpdate: null, lastBaseUpdate: null, shared: { pending: null, interleaved: null, lanes: NoLanes }, effects: null }; fiber.updateQueue = queue; } function cloneUpdateQueue(current, workInProgress) { // Clone the update queue from current. Unless it's already a clone. var queue = workInProgress.updateQueue; var currentQueue = current.updateQueue; if (queue === currentQueue) { var clone = { baseState: currentQueue.baseState, firstBaseUpdate: currentQueue.firstBaseUpdate, lastBaseUpdate: currentQueue.lastBaseUpdate, shared: currentQueue.shared, effects: currentQueue.effects }; workInProgress.updateQueue = clone; } } function createUpdate(eventTime, lane) { var update = { eventTime: eventTime, lane: lane, tag: UpdateState, payload: null, callback: null, next: null }; return update; } function enqueueUpdate(fiber, update, lane) { var updateQueue = fiber.updateQueue; if (updateQueue === null) { // Only occurs if the fiber has been unmounted. return null; } var sharedQueue = updateQueue.shared; { if ( currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate ) { error( "An update (setState, replaceState, or forceUpdate) was scheduled " + "from inside an update function. Update functions should be pure, " + "with zero side-effects. Consider using componentDidUpdate or a " + "callback." ); didWarnUpdateInsideUpdate = true; } } if (isUnsafeClassRenderPhaseUpdate()) { // This is an unsafe render phase update. Add directly to the update // queue so we can process it immediately during the current render. var pending = sharedQueue.pending; if (pending === null) { // This is the first update. Create a circular list. update.next = update; } else { update.next = pending.next; pending.next = update; } sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering // this fiber. This is for backwards compatibility in the case where you // update a different component during render phase than the one that is // currently renderings (a pattern that is accompanied by a warning). return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); } else { return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); } } function entangleTransitions(root, fiber, lane) { var updateQueue = fiber.updateQueue; if (updateQueue === null) { // Only occurs if the fiber has been unmounted. return; } var sharedQueue = updateQueue.shared; if (isTransitionLane(lane)) { var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must // have finished. We can remove them from the shared queue, which represents // a superset of the actually pending lanes. In some cases we may entangle // more than we need to, but that's OK. In fact it's worse if we *don't* // entangle when we should. queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. var newQueueLanes = mergeLanes(queueLanes, lane); sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if // the lane finished since the last time we entangled it. So we need to // entangle it again, just to be sure. markRootEntangled(root, newQueueLanes); } } function enqueueCapturedUpdate(workInProgress, capturedUpdate) { // Captured updates are updates that are thrown by a child during the render // phase. They should be discarded if the render is aborted. Therefore, // we should only put them on the work-in-progress queue, not the current one. var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. var current = workInProgress.alternate; if (current !== null) { var currentQueue = current.updateQueue; if (queue === currentQueue) { // The work-in-progress queue is the same as current. This happens when // we bail out on a parent fiber that then captures an error thrown by // a child. Since we want to append the update only to the work-in // -progress queue, we need to clone the updates. We usually clone during // processUpdateQueue, but that didn't happen in this case because we // skipped over the parent when we bailed out. var newFirst = null; var newLast = null; var firstBaseUpdate = queue.firstBaseUpdate; if (firstBaseUpdate !== null) { // Loop through the updates and clone them. var update = firstBaseUpdate; do { var clone = { eventTime: update.eventTime, lane: update.lane, tag: update.tag, payload: update.payload, callback: update.callback, next: null }; if (newLast === null) { newFirst = newLast = clone; } else { newLast.next = clone; newLast = clone; } update = update.next; } while (update !== null); // Append the captured update the end of the cloned list. if (newLast === null) { newFirst = newLast = capturedUpdate; } else { newLast.next = capturedUpdate; newLast = capturedUpdate; } } else { // There are no base updates. newFirst = newLast = capturedUpdate; } queue = { baseState: currentQueue.baseState, firstBaseUpdate: newFirst, lastBaseUpdate: newLast, shared: currentQueue.shared, effects: currentQueue.effects }; workInProgress.updateQueue = queue; return; } } // Append the update to the end of the list. var lastBaseUpdate = queue.lastBaseUpdate; if (lastBaseUpdate === null) { queue.firstBaseUpdate = capturedUpdate; } else { lastBaseUpdate.next = capturedUpdate; } queue.lastBaseUpdate = capturedUpdate; } function getStateFromUpdate( workInProgress, queue, update, prevState, nextProps, instance ) { switch (update.tag) { case ReplaceState: { var payload = update.payload; if (typeof payload === "function") { // Updater function { enterDisallowedContextReadInDEV(); } var nextState = payload.call(instance, prevState, nextProps); { exitDisallowedContextReadInDEV(); } return nextState; } // State object return payload; } case CaptureUpdate: { workInProgress.flags = (workInProgress.flags & ~ShouldCapture) | DidCapture; } // Intentional fallthrough case UpdateState: { var _payload = update.payload; var partialState; if (typeof _payload === "function") { // Updater function { enterDisallowedContextReadInDEV(); } partialState = _payload.call(instance, prevState, nextProps); { exitDisallowedContextReadInDEV(); } } else { // Partial state object partialState = _payload; } if (partialState === null || partialState === undefined) { // Null and undefined are treated as no-ops. return prevState; } // Merge the partial state and the previous state. return assign({}, prevState, partialState); } case ForceUpdate: { hasForceUpdate = true; return prevState; } } return prevState; } function processUpdateQueue(workInProgress, props, instance, renderLanes) { // This is always non-null on a ClassComponent or HostRoot var queue = workInProgress.updateQueue; hasForceUpdate = false; { currentlyProcessingQueue = queue.shared; } var firstBaseUpdate = queue.firstBaseUpdate; var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. var pendingQueue = queue.shared.pending; if (pendingQueue !== null) { queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first // and last so that it's non-circular. var lastPendingUpdate = pendingQueue; var firstPendingUpdate = lastPendingUpdate.next; lastPendingUpdate.next = null; // Append pending updates to base queue if (lastBaseUpdate === null) { firstBaseUpdate = firstPendingUpdate; } else { lastBaseUpdate.next = firstPendingUpdate; } lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then // we need to transfer the updates to that queue, too. Because the base // queue is a singly-linked list with no cycles, we can append to both // lists and take advantage of structural sharing. // TODO: Pass `current` as argument var current = workInProgress.alternate; if (current !== null) { // This is always non-null on a ClassComponent or HostRoot var currentQueue = current.updateQueue; var currentLastBaseUpdate = currentQueue.lastBaseUpdate; if (currentLastBaseUpdate !== lastBaseUpdate) { if (currentLastBaseUpdate === null) { currentQueue.firstBaseUpdate = firstPendingUpdate; } else { currentLastBaseUpdate.next = firstPendingUpdate; } currentQueue.lastBaseUpdate = lastPendingUpdate; } } } // These values may change as we process the queue. if (firstBaseUpdate !== null) { // Iterate through the list of updates to compute the result. var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes // from the original lanes. var newLanes = NoLanes; var newBaseState = null; var newFirstBaseUpdate = null; var newLastBaseUpdate = null; var update = firstBaseUpdate; do { var updateLane = update.lane; var updateEventTime = update.eventTime; if (!isSubsetOfLanes(renderLanes, updateLane)) { // Priority is insufficient. Skip this update. If this is the first // skipped update, the previous update/state is the new base // update/state. var clone = { eventTime: updateEventTime, lane: updateLane, tag: update.tag, payload: update.payload, callback: update.callback, next: null }; if (newLastBaseUpdate === null) { newFirstBaseUpdate = newLastBaseUpdate = clone; newBaseState = newState; } else { newLastBaseUpdate = newLastBaseUpdate.next = clone; } // Update the remaining priority in the queue. newLanes = mergeLanes(newLanes, updateLane); } else { // This update does have sufficient priority. if (newLastBaseUpdate !== null) { var _clone = { eventTime: updateEventTime, // This update is going to be committed so we never want uncommit // it. Using NoLane works because 0 is a subset of all bitmasks, so // this will never be skipped by the check above. lane: NoLane, tag: update.tag, payload: update.payload, callback: update.callback, next: null }; newLastBaseUpdate = newLastBaseUpdate.next = _clone; } // Process this update. newState = getStateFromUpdate( workInProgress, queue, update, newState, props, instance ); var callback = update.callback; if ( callback !== null && // If the update was already committed, we should not queue its // callback again. update.lane !== NoLane ) { workInProgress.flags |= Callback; var effects = queue.effects; if (effects === null) { queue.effects = [update]; } else { effects.push(update); } } } update = update.next; if (update === null) { pendingQueue = queue.shared.pending; if (pendingQueue === null) { break; } else { // An update was scheduled from inside a reducer. Add the new // pending updates to the end of the list and keep processing. var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we // unravel them when transferring them to the base queue. var _firstPendingUpdate = _lastPendingUpdate.next; _lastPendingUpdate.next = null; update = _firstPendingUpdate; queue.lastBaseUpdate = _lastPendingUpdate; queue.shared.pending = null; } } } while (true); if (newLastBaseUpdate === null) { newBaseState = newState; } queue.baseState = newBaseState; queue.firstBaseUpdate = newFirstBaseUpdate; queue.lastBaseUpdate = newLastBaseUpdate; // Interleaved updates are stored on a separate queue. We aren't going to // process them during this render, but we do need to track which lanes // are remaining. var lastInterleaved = queue.shared.interleaved; if (lastInterleaved !== null) { var interleaved = lastInterleaved; do { newLanes = mergeLanes(newLanes, interleaved.lane); interleaved = interleaved.next; } while (interleaved !== lastInterleaved); } else if (firstBaseUpdate === null) { // `queue.lanes` is used for entangling transitions. We can set it back to // zero once the queue is empty. queue.shared.lanes = NoLanes; } // Set the remaining expiration time to be whatever is remaining in the queue. // This should be fine because the only two other things that contribute to // expiration time are props and context. We're already in the middle of the // begin phase by the time we start processing the queue, so we've already // dealt with the props. Context in components that specify // shouldComponentUpdate is tricky; but we'll have to account for // that regardless. markSkippedUpdateLanes(newLanes); workInProgress.lanes = newLanes; workInProgress.memoizedState = newState; } { currentlyProcessingQueue = null; } } function callCallback(callback, context) { if (typeof callback !== "function") { throw new Error( "Invalid argument passed as callback. Expected a function. Instead " + ("received: " + callback) ); } callback.call(context); } function resetHasForceUpdateBeforeProcessing() { hasForceUpdate = false; } function checkHasForceUpdateAfterProcessing() { return hasForceUpdate; } function commitUpdateQueue(finishedWork, finishedQueue, instance) { // Commit the effects var effects = finishedQueue.effects; finishedQueue.effects = null; if (effects !== null) { for (var i = 0; i < effects.length; i++) { var effect = effects[i]; var callback = effect.callback; if (callback !== null) { effect.callback = null; callCallback(callback, instance); } } } } var fakeInternalInstance = {}; // React.Component uses a shared frozen object by default. // We'll use it to determine whether we need to initialize legacy refs. var emptyRefsObject = new React.Component().refs; var didWarnAboutStateAssignmentForComponent; var didWarnAboutUninitializedState; var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; var didWarnAboutLegacyLifecyclesAndDerivedState; var didWarnAboutUndefinedDerivedState; var warnOnUndefinedDerivedState; var warnOnInvalidCallback; var didWarnAboutDirectlyAssigningPropsToState; var didWarnAboutContextTypeAndContextTypes; var didWarnAboutInvalidateContextType; { didWarnAboutStateAssignmentForComponent = new Set(); didWarnAboutUninitializedState = new Set(); didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); didWarnAboutDirectlyAssigningPropsToState = new Set(); didWarnAboutUndefinedDerivedState = new Set(); didWarnAboutContextTypeAndContextTypes = new Set(); didWarnAboutInvalidateContextType = new Set(); var didWarnOnInvalidCallback = new Set(); warnOnInvalidCallback = function(callback, callerName) { if (callback === null || typeof callback === "function") { return; } var key = callerName + "_" + callback; if (!didWarnOnInvalidCallback.has(key)) { didWarnOnInvalidCallback.add(key); error( "%s(...): Expected the last optional `callback` argument to be a " + "function. Instead received: %s.", callerName, callback ); } }; warnOnUndefinedDerivedState = function(type, partialState) { if (partialState === undefined) { var componentName = getComponentNameFromType(type) || "Component"; if (!didWarnAboutUndefinedDerivedState.has(componentName)) { didWarnAboutUndefinedDerivedState.add(componentName); error( "%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. " + "You have returned undefined.", componentName ); } } }; // This is so gross but it's at least non-critical and can be removed if // it causes problems. This is meant to give a nicer error message for // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, // ...)) which otherwise throws a "_processChildContext is not a function" // exception. Object.defineProperty(fakeInternalInstance, "_processChildContext", { enumerable: false, value: function() { throw new Error( "_processChildContext is not available in React 16+. This likely " + "means you have multiple copies of React and are attempting to nest " + "a React 15 tree inside a React 16 tree using " + "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + "to make sure you have only one copy of React (and ideally, switch " + "to ReactDOM.createPortal)." ); } }); Object.freeze(fakeInternalInstance); } function applyDerivedStateFromProps( workInProgress, ctor, getDerivedStateFromProps, nextProps ) { var prevState = workInProgress.memoizedState; var partialState = getDerivedStateFromProps(nextProps, prevState); { warnOnUndefinedDerivedState(ctor, partialState); } // Merge the partial state and the previous state. var memoizedState = partialState === null || partialState === undefined ? prevState : assign({}, prevState, partialState); workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the // base state. if (workInProgress.lanes === NoLanes) { // Queue is always non-null for classes var updateQueue = workInProgress.updateQueue; updateQueue.baseState = memoizedState; } } var classComponentUpdater = { isMounted: isMounted, enqueueSetState: function(inst, payload, callback) { var fiber = get(inst); var eventTime = requestEventTime(); var lane = requestUpdateLane(fiber); var update = createUpdate(eventTime, lane); update.payload = payload; if (callback !== undefined && callback !== null) { { warnOnInvalidCallback(callback, "setState"); } update.callback = callback; } var root = enqueueUpdate(fiber, update, lane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, lane, eventTime); entangleTransitions(root, fiber, lane); } }, enqueueReplaceState: function(inst, payload, callback) { var fiber = get(inst); var eventTime = requestEventTime(); var lane = requestUpdateLane(fiber); var update = createUpdate(eventTime, lane); update.tag = ReplaceState; update.payload = payload; if (callback !== undefined && callback !== null) { { warnOnInvalidCallback(callback, "replaceState"); } update.callback = callback; } var root = enqueueUpdate(fiber, update, lane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, lane, eventTime); entangleTransitions(root, fiber, lane); } }, enqueueForceUpdate: function(inst, callback) { var fiber = get(inst); var eventTime = requestEventTime(); var lane = requestUpdateLane(fiber); var update = createUpdate(eventTime, lane); update.tag = ForceUpdate; if (callback !== undefined && callback !== null) { { warnOnInvalidCallback(callback, "forceUpdate"); } update.callback = callback; } var root = enqueueUpdate(fiber, update, lane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, lane, eventTime); entangleTransitions(root, fiber, lane); } } }; function checkShouldComponentUpdate( workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext ) { var instance = workInProgress.stateNode; if (typeof instance.shouldComponentUpdate === "function") { var shouldUpdate = instance.shouldComponentUpdate( newProps, newState, nextContext ); { if (shouldUpdate === undefined) { error( "%s.shouldComponentUpdate(): Returned undefined instead of a " + "boolean value. Make sure to return true or false.", getComponentNameFromType(ctor) || "Component" ); } } return shouldUpdate; } if (ctor.prototype && ctor.prototype.isPureReactComponent) { return ( !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState) ); } return true; } function checkClassInstance(workInProgress, ctor, newProps) { var instance = workInProgress.stateNode; { var name = getComponentNameFromType(ctor) || "Component"; var renderPresent = instance.render; if (!renderPresent) { if (ctor.prototype && typeof ctor.prototype.render === "function") { error( "%s(...): No `render` method found on the returned component " + "instance: did you accidentally return an object from the constructor?", name ); } else { error( "%s(...): No `render` method found on the returned component " + "instance: you may have forgotten to define `render`.", name ); } } if ( instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state ) { error( "getInitialState was defined on %s, a plain JavaScript class. " + "This is only supported for classes created using React.createClass. " + "Did you mean to define a state property instead?", name ); } if ( instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved ) { error( "getDefaultProps was defined on %s, a plain JavaScript class. " + "This is only supported for classes created using React.createClass. " + "Use a static property to define defaultProps instead.", name ); } if (instance.propTypes) { error( "propTypes was defined as an instance property on %s. Use a static " + "property to define propTypes instead.", name ); } if (instance.contextType) { error( "contextType was defined as an instance property on %s. Use a static " + "property to define contextType instead.", name ); } { if (instance.contextTypes) { error( "contextTypes was defined as an instance property on %s. Use a static " + "property to define contextTypes instead.", name ); } if ( ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor) ) { didWarnAboutContextTypeAndContextTypes.add(ctor); error( "%s declares both contextTypes and contextType static properties. " + "The legacy contextTypes property will be ignored.", name ); } } if (typeof instance.componentShouldUpdate === "function") { error( "%s has a method called " + "componentShouldUpdate(). Did you mean shouldComponentUpdate()? " + "The name is phrased as a question because the function is " + "expected to return a value.", name ); } if ( ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== "undefined" ) { error( "%s has a method called shouldComponentUpdate(). " + "shouldComponentUpdate should not be used when extending React.PureComponent. " + "Please extend React.Component if shouldComponentUpdate is used.", getComponentNameFromType(ctor) || "A pure component" ); } if (typeof instance.componentDidUnmount === "function") { error( "%s has a method called " + "componentDidUnmount(). But there is no such lifecycle method. " + "Did you mean componentWillUnmount()?", name ); } if (typeof instance.componentDidReceiveProps === "function") { error( "%s has a method called " + "componentDidReceiveProps(). But there is no such lifecycle method. " + "If you meant to update the state in response to changing props, " + "use componentWillReceiveProps(). If you meant to fetch data or " + "run side-effects or mutations after React has updated the UI, use componentDidUpdate().", name ); } if (typeof instance.componentWillRecieveProps === "function") { error( "%s has a method called " + "componentWillRecieveProps(). Did you mean componentWillReceiveProps()?", name ); } if (typeof instance.UNSAFE_componentWillRecieveProps === "function") { error( "%s has a method called " + "UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?", name ); } var hasMutatedProps = instance.props !== newProps; if (instance.props !== undefined && hasMutatedProps) { error( "%s(...): When calling super() in `%s`, make sure to pass " + "up the same props that your component's constructor was passed.", name, name ); } if (instance.defaultProps) { error( "Setting defaultProps as an instance property on %s is not supported and will be ignored." + " Instead, define defaultProps as a static property on %s.", name, name ); } if ( typeof instance.getSnapshotBeforeUpdate === "function" && typeof instance.componentDidUpdate !== "function" && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor) ) { didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); error( "%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). " + "This component defines getSnapshotBeforeUpdate() only.", getComponentNameFromType(ctor) ); } if (typeof instance.getDerivedStateFromProps === "function") { error( "%s: getDerivedStateFromProps() is defined as an instance method " + "and will be ignored. Instead, declare it as a static method.", name ); } if (typeof instance.getDerivedStateFromError === "function") { error( "%s: getDerivedStateFromError() is defined as an instance method " + "and will be ignored. Instead, declare it as a static method.", name ); } if (typeof ctor.getSnapshotBeforeUpdate === "function") { error( "%s: getSnapshotBeforeUpdate() is defined as a static method " + "and will be ignored. Instead, declare it as an instance method.", name ); } var _state = instance.state; if (_state && (typeof _state !== "object" || isArray(_state))) { error("%s.state: must be set to an object or null", name); } if ( typeof instance.getChildContext === "function" && typeof ctor.childContextTypes !== "object" ) { error( "%s.getChildContext(): childContextTypes must be defined in order to " + "use getChildContext().", name ); } } } function adoptClassInstance(workInProgress, instance) { instance.updater = classComponentUpdater; workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates set(instance, workInProgress); { instance._reactInternalInstance = fakeInternalInstance; } } function constructClassInstance(workInProgress, ctor, props) { var isLegacyContextConsumer = false; var unmaskedContext = emptyContextObject; var context = emptyContextObject; var contextType = ctor.contextType; { if ("contextType" in ctor) { var isValid = // Allow null for conditional declaration contextType === null || (contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined); // Not a if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { didWarnAboutInvalidateContextType.add(ctor); var addendum = ""; if (contextType === undefined) { addendum = " However, it is set to undefined. " + "This can be caused by a typo or by mixing up named and default imports. " + "This can also happen due to a circular dependency, so " + "try moving the createContext() call to a separate file."; } else if (typeof contextType !== "object") { addendum = " However, it is set to a " + typeof contextType + "."; } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) { addendum = " Did you accidentally pass the Context.Provider instead?"; } else if (contextType._context !== undefined) { // addendum = " Did you accidentally pass the Context.Consumer instead?"; } else { addendum = " However, it is set to an object with keys {" + Object.keys(contextType).join(", ") + "}."; } error( "%s defines an invalid contextType. " + "contextType should point to the Context object returned by React.createContext().%s", getComponentNameFromType(ctor) || "Component", addendum ); } } } if (typeof contextType === "object" && contextType !== null) { context = readContext(contextType); } else { unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); var contextTypes = ctor.contextTypes; isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined; context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject; } var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. var state = (workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null); adoptClassInstance(workInProgress, instance); { if (typeof ctor.getDerivedStateFromProps === "function" && state === null) { var componentName = getComponentNameFromType(ctor) || "Component"; if (!didWarnAboutUninitializedState.has(componentName)) { didWarnAboutUninitializedState.add(componentName); error( "`%s` uses `getDerivedStateFromProps` but its initial state is " + "%s. This is not recommended. Instead, define the initial state by " + "assigning an object to `this.state` in the constructor of `%s`. " + "This ensures that `getDerivedStateFromProps` arguments have a consistent shape.", componentName, instance.state === null ? "null" : "undefined", componentName ); } } // If new component APIs are defined, "unsafe" lifecycles won't be called. // Warn about these lifecycles if they are present. // Don't warn about react-lifecycles-compat polyfilled methods though. if ( typeof ctor.getDerivedStateFromProps === "function" || typeof instance.getSnapshotBeforeUpdate === "function" ) { var foundWillMountName = null; var foundWillReceivePropsName = null; var foundWillUpdateName = null; if ( typeof instance.componentWillMount === "function" && instance.componentWillMount.__suppressDeprecationWarning !== true ) { foundWillMountName = "componentWillMount"; } else if (typeof instance.UNSAFE_componentWillMount === "function") { foundWillMountName = "UNSAFE_componentWillMount"; } if ( typeof instance.componentWillReceiveProps === "function" && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true ) { foundWillReceivePropsName = "componentWillReceiveProps"; } else if ( typeof instance.UNSAFE_componentWillReceiveProps === "function" ) { foundWillReceivePropsName = "UNSAFE_componentWillReceiveProps"; } if ( typeof instance.componentWillUpdate === "function" && instance.componentWillUpdate.__suppressDeprecationWarning !== true ) { foundWillUpdateName = "componentWillUpdate"; } else if (typeof instance.UNSAFE_componentWillUpdate === "function") { foundWillUpdateName = "UNSAFE_componentWillUpdate"; } if ( foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null ) { var _componentName = getComponentNameFromType(ctor) || "Component"; var newApiName = typeof ctor.getDerivedStateFromProps === "function" ? "getDerivedStateFromProps()" : "getSnapshotBeforeUpdate()"; if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) { didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); error( "Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n" + "%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n" + "The above lifecycles should be removed. Learn more about this warning here:\n" + "https://reactjs.org/link/unsafe-component-lifecycles", _componentName, newApiName, foundWillMountName !== null ? "\n " + foundWillMountName : "", foundWillReceivePropsName !== null ? "\n " + foundWillReceivePropsName : "", foundWillUpdateName !== null ? "\n " + foundWillUpdateName : "" ); } } } } // Cache unmasked context so we can avoid recreating masked context unless necessary. // ReactFiberContext usually updates this cache but can't for newly-created instances. if (isLegacyContextConsumer) { cacheContext(workInProgress, unmaskedContext, context); } return instance; } function callComponentWillMount(workInProgress, instance) { var oldState = instance.state; if (typeof instance.componentWillMount === "function") { instance.componentWillMount(); } if (typeof instance.UNSAFE_componentWillMount === "function") { instance.UNSAFE_componentWillMount(); } if (oldState !== instance.state) { { error( "%s.componentWillMount(): Assigning directly to this.state is " + "deprecated (except inside a component's " + "constructor). Use setState instead.", getComponentNameFromFiber(workInProgress) || "Component" ); } classComponentUpdater.enqueueReplaceState(instance, instance.state, null); } } function callComponentWillReceiveProps( workInProgress, instance, newProps, nextContext ) { var oldState = instance.state; if (typeof instance.componentWillReceiveProps === "function") { instance.componentWillReceiveProps(newProps, nextContext); } if (typeof instance.UNSAFE_componentWillReceiveProps === "function") { instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); } if (instance.state !== oldState) { { var componentName = getComponentNameFromFiber(workInProgress) || "Component"; if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { didWarnAboutStateAssignmentForComponent.add(componentName); error( "%s.componentWillReceiveProps(): Assigning directly to " + "this.state is deprecated (except inside a component's " + "constructor). Use setState instead.", componentName ); } } classComponentUpdater.enqueueReplaceState(instance, instance.state, null); } } // Invokes the mount life-cycles on a previously never rendered instance. function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { { checkClassInstance(workInProgress, ctor, newProps); } var instance = workInProgress.stateNode; instance.props = newProps; instance.state = workInProgress.memoizedState; instance.refs = emptyRefsObject; initializeUpdateQueue(workInProgress); var contextType = ctor.contextType; if (typeof contextType === "object" && contextType !== null) { instance.context = readContext(contextType); } else { var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); instance.context = getMaskedContext(workInProgress, unmaskedContext); } { if (instance.state === newProps) { var componentName = getComponentNameFromType(ctor) || "Component"; if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { didWarnAboutDirectlyAssigningPropsToState.add(componentName); error( "%s: It is not recommended to assign props directly to state " + "because updates to props won't be reflected in state. " + "In most cases, it is better to use props directly.", componentName ); } } if (workInProgress.mode & StrictLegacyMode) { ReactStrictModeWarnings.recordLegacyContextWarning( workInProgress, instance ); } { ReactStrictModeWarnings.recordUnsafeLifecycleWarnings( workInProgress, instance ); } } instance.state = workInProgress.memoizedState; var getDerivedStateFromProps = ctor.getDerivedStateFromProps; if (typeof getDerivedStateFromProps === "function") { applyDerivedStateFromProps( workInProgress, ctor, getDerivedStateFromProps, newProps ); instance.state = workInProgress.memoizedState; } // In order to support react-lifecycles-compat polyfilled components, // Unsafe lifecycles should not be invoked for components using the new APIs. if ( typeof ctor.getDerivedStateFromProps !== "function" && typeof instance.getSnapshotBeforeUpdate !== "function" && (typeof instance.UNSAFE_componentWillMount === "function" || typeof instance.componentWillMount === "function") ) { callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's // process them now. processUpdateQueue(workInProgress, newProps, instance, renderLanes); instance.state = workInProgress.memoizedState; } if (typeof instance.componentDidMount === "function") { var fiberFlags = Update; workInProgress.flags |= fiberFlags; } } function resumeMountClassInstance(workInProgress, ctor, newProps, renderLanes) { var instance = workInProgress.stateNode; var oldProps = workInProgress.memoizedProps; instance.props = oldProps; var oldContext = instance.context; var contextType = ctor.contextType; var nextContext = emptyContextObject; if (typeof contextType === "object" && contextType !== null) { nextContext = readContext(contextType); } else { var nextLegacyUnmaskedContext = getUnmaskedContext( workInProgress, ctor, true ); nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext); } var getDerivedStateFromProps = ctor.getDerivedStateFromProps; var hasNewLifecycles = typeof getDerivedStateFromProps === "function" || typeof instance.getSnapshotBeforeUpdate === "function"; // Note: During these life-cycles, instance.props/instance.state are what // ever the previously attempted to render - not the "current". However, // during componentDidUpdate we pass the "current" props. // In order to support react-lifecycles-compat polyfilled components, // Unsafe lifecycles should not be invoked for components using the new APIs. if ( !hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === "function" || typeof instance.componentWillReceiveProps === "function") ) { if (oldProps !== newProps || oldContext !== nextContext) { callComponentWillReceiveProps( workInProgress, instance, newProps, nextContext ); } } resetHasForceUpdateBeforeProcessing(); var oldState = workInProgress.memoizedState; var newState = (instance.state = oldState); processUpdateQueue(workInProgress, newProps, instance, renderLanes); newState = workInProgress.memoizedState; if ( oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing() ) { // If an update was already in progress, we should schedule an Update // effect even though we're bailing out, so that cWU/cDU are called. if (typeof instance.componentDidMount === "function") { var fiberFlags = Update; workInProgress.flags |= fiberFlags; } return false; } if (typeof getDerivedStateFromProps === "function") { applyDerivedStateFromProps( workInProgress, ctor, getDerivedStateFromProps, newProps ); newState = workInProgress.memoizedState; } var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate( workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext ); if (shouldUpdate) { // In order to support react-lifecycles-compat polyfilled components, // Unsafe lifecycles should not be invoked for components using the new APIs. if ( !hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === "function" || typeof instance.componentWillMount === "function") ) { if (typeof instance.componentWillMount === "function") { instance.componentWillMount(); } if (typeof instance.UNSAFE_componentWillMount === "function") { instance.UNSAFE_componentWillMount(); } } if (typeof instance.componentDidMount === "function") { var _fiberFlags = Update; workInProgress.flags |= _fiberFlags; } } else { // If an update was already in progress, we should schedule an Update // effect even though we're bailing out, so that cWU/cDU are called. if (typeof instance.componentDidMount === "function") { var _fiberFlags2 = Update; workInProgress.flags |= _fiberFlags2; } // If shouldComponentUpdate returned false, we should still update the // memoized state to indicate that this work can be reused. workInProgress.memoizedProps = newProps; workInProgress.memoizedState = newState; } // Update the existing instance's state, props, and context pointers even // if shouldComponentUpdate returns false. instance.props = newProps; instance.state = newState; instance.context = nextContext; return shouldUpdate; } // Invokes the update life-cycles and returns false if it shouldn't rerender. function updateClassInstance( current, workInProgress, ctor, newProps, renderLanes ) { var instance = workInProgress.stateNode; cloneUpdateQueue(current, workInProgress); var unresolvedOldProps = workInProgress.memoizedProps; var oldProps = workInProgress.type === workInProgress.elementType ? unresolvedOldProps : resolveDefaultProps(workInProgress.type, unresolvedOldProps); instance.props = oldProps; var unresolvedNewProps = workInProgress.pendingProps; var oldContext = instance.context; var contextType = ctor.contextType; var nextContext = emptyContextObject; if (typeof contextType === "object" && contextType !== null) { nextContext = readContext(contextType); } else { var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); } var getDerivedStateFromProps = ctor.getDerivedStateFromProps; var hasNewLifecycles = typeof getDerivedStateFromProps === "function" || typeof instance.getSnapshotBeforeUpdate === "function"; // Note: During these life-cycles, instance.props/instance.state are what // ever the previously attempted to render - not the "current". However, // during componentDidUpdate we pass the "current" props. // In order to support react-lifecycles-compat polyfilled components, // Unsafe lifecycles should not be invoked for components using the new APIs. if ( !hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === "function" || typeof instance.componentWillReceiveProps === "function") ) { if ( unresolvedOldProps !== unresolvedNewProps || oldContext !== nextContext ) { callComponentWillReceiveProps( workInProgress, instance, newProps, nextContext ); } } resetHasForceUpdateBeforeProcessing(); var oldState = workInProgress.memoizedState; var newState = (instance.state = oldState); processUpdateQueue(workInProgress, newProps, instance, renderLanes); newState = workInProgress.memoizedState; if ( unresolvedOldProps === unresolvedNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing() && !enableLazyContextPropagation ) { // If an update was already in progress, we should schedule an Update // effect even though we're bailing out, so that cWU/cDU are called. if (typeof instance.componentDidUpdate === "function") { if ( unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState ) { workInProgress.flags |= Update; } } if (typeof instance.getSnapshotBeforeUpdate === "function") { if ( unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState ) { workInProgress.flags |= Snapshot; } } return false; } if (typeof getDerivedStateFromProps === "function") { applyDerivedStateFromProps( workInProgress, ctor, getDerivedStateFromProps, newProps ); newState = workInProgress.memoizedState; } var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate( workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext ) || // TODO: In some cases, we'll end up checking if context has changed twice, // both before and after `shouldComponentUpdate` has been called. Not ideal, // but I'm loath to refactor this function. This only happens for memoized // components so it's not that common. enableLazyContextPropagation; if (shouldUpdate) { // In order to support react-lifecycles-compat polyfilled components, // Unsafe lifecycles should not be invoked for components using the new APIs. if ( !hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === "function" || typeof instance.componentWillUpdate === "function") ) { if (typeof instance.componentWillUpdate === "function") { instance.componentWillUpdate(newProps, newState, nextContext); } if (typeof instance.UNSAFE_componentWillUpdate === "function") { instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext); } } if (typeof instance.componentDidUpdate === "function") { workInProgress.flags |= Update; } if (typeof instance.getSnapshotBeforeUpdate === "function") { workInProgress.flags |= Snapshot; } } else { // If an update was already in progress, we should schedule an Update // effect even though we're bailing out, so that cWU/cDU are called. if (typeof instance.componentDidUpdate === "function") { if ( unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState ) { workInProgress.flags |= Update; } } if (typeof instance.getSnapshotBeforeUpdate === "function") { if ( unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState ) { workInProgress.flags |= Snapshot; } } // If shouldComponentUpdate returned false, we should still update the // memoized props/state to indicate that this work can be reused. workInProgress.memoizedProps = newProps; workInProgress.memoizedState = newState; } // Update the existing instance's state, props, and context pointers even // if shouldComponentUpdate returns false. instance.props = newProps; instance.state = newState; instance.context = nextContext; return shouldUpdate; } var didWarnAboutMaps; var didWarnAboutGenerators; var didWarnAboutStringRefs; var ownerHasKeyUseWarning; var ownerHasFunctionTypeWarning; var warnForMissingKey = function(child, returnFiber) {}; { didWarnAboutMaps = false; didWarnAboutGenerators = false; didWarnAboutStringRefs = {}; /** * Warn if there's no key explicitly set on dynamic arrays of children or * object keys are not valid. This allows us to keep track of children between * updates. */ ownerHasKeyUseWarning = {}; ownerHasFunctionTypeWarning = {}; warnForMissingKey = function(child, returnFiber) { if (child === null || typeof child !== "object") { return; } if (!child._store || child._store.validated || child.key != null) { return; } if (typeof child._store !== "object") { throw new Error( "React Component in warnForMissingKey should have a _store. " + "This error is likely caused by a bug in React. Please file an issue." ); } child._store.validated = true; var componentName = getComponentNameFromFiber(returnFiber) || "Component"; if (ownerHasKeyUseWarning[componentName]) { return; } ownerHasKeyUseWarning[componentName] = true; error( "Each child in a list should have a unique " + '"key" prop. See https://reactjs.org/link/warning-keys for ' + "more information." ); }; } function coerceRef(returnFiber, current, element) { var mixedRef = element.ref; if ( mixedRef !== null && typeof mixedRef !== "function" && typeof mixedRef !== "object" ) { { // TODO: Clean this up once we turn on the string ref warning for // everyone, because the strict mode case will no longer be relevant if ( (returnFiber.mode & StrictLegacyMode || warnAboutStringRefs) && // We warn in ReactElement.js if owner and self are equal for string refs // because these cannot be automatically converted to an arrow function // using a codemod. Therefore, we don't have to warn about string refs again. !( element._owner && element._self && element._owner.stateNode !== element._self ) ) { var componentName = getComponentNameFromFiber(returnFiber) || "Component"; if (!didWarnAboutStringRefs[componentName]) { { error( 'A string ref, "%s", has been found within a strict mode tree. ' + "String refs are a source of potential bugs and should be avoided. " + "We recommend using useRef() or createRef() instead. " + "Learn more about using refs safely here: " + "https://reactjs.org/link/strict-mode-string-ref", mixedRef ); } didWarnAboutStringRefs[componentName] = true; } } } if (element._owner) { var owner = element._owner; var inst; if (owner) { var ownerFiber = owner; if (ownerFiber.tag !== ClassComponent) { throw new Error( "Function components cannot have string refs. " + "We recommend using useRef() instead. " + "Learn more about using refs safely here: " + "https://reactjs.org/link/strict-mode-string-ref" ); } inst = ownerFiber.stateNode; } if (!inst) { throw new Error( "Missing owner for string ref " + mixedRef + ". This error is likely caused by a " + "bug in React. Please file an issue." ); } // Assigning this to a const so Flow knows it won't change in the closure var resolvedInst = inst; { checkPropStringCoercion(mixedRef, "ref"); } var stringRef = "" + mixedRef; // Check if previous string ref matches new string ref if ( current !== null && current.ref !== null && typeof current.ref === "function" && current.ref._stringRef === stringRef ) { return current.ref; } var ref = function(value) { var refs = resolvedInst.refs; if (refs === emptyRefsObject) { // This is a lazy pooled frozen object, so we need to initialize. refs = resolvedInst.refs = {}; } if (value === null) { delete refs[stringRef]; } else { refs[stringRef] = value; } }; ref._stringRef = stringRef; return ref; } else { if (typeof mixedRef !== "string") { throw new Error( "Expected ref to be a function, a string, an object returned by React.createRef(), or null." ); } if (!element._owner) { throw new Error( "Element ref was specified as a string (" + mixedRef + ") but no owner was set. This could happen for one of" + " the following reasons:\n" + "1. You may be adding a ref to a function component\n" + "2. You may be adding a ref to a component that was not created inside a component's render method\n" + "3. You have multiple copies of React loaded\n" + "See https://reactjs.org/link/refs-must-have-owner for more information." ); } } } return mixedRef; } function throwOnInvalidObjectType(returnFiber, newChild) { var childString = Object.prototype.toString.call(newChild); throw new Error( "Objects are not valid as a React child (found: " + (childString === "[object Object]" ? "object with keys {" + Object.keys(newChild).join(", ") + "}" : childString) + "). " + "If you meant to render a collection of children, use an array " + "instead." ); } function warnOnFunctionType(returnFiber) { { var componentName = getComponentNameFromFiber(returnFiber) || "Component"; if (ownerHasFunctionTypeWarning[componentName]) { return; } ownerHasFunctionTypeWarning[componentName] = true; error( "Functions are not valid as a React child. This may happen if " + "you return a Component instead of from render. " + "Or maybe you meant to call this function rather than return it." ); } } function resolveLazy(lazyType) { var payload = lazyType._payload; var init = lazyType._init; return init(payload); } // This wrapper function exists because I expect to clone the code in each path // to be able to optimize each path individually by branching early. This needs // a compiler or we can do it manually. Helpers that don't need this branching // live outside of this function. function ChildReconciler(shouldTrackSideEffects) { function deleteChild(returnFiber, childToDelete) { if (!shouldTrackSideEffects) { // Noop. return; } var deletions = returnFiber.deletions; if (deletions === null) { returnFiber.deletions = [childToDelete]; returnFiber.flags |= ChildDeletion; } else { deletions.push(childToDelete); } } function deleteRemainingChildren(returnFiber, currentFirstChild) { if (!shouldTrackSideEffects) { // Noop. return null; } // TODO: For the shouldClone case, this could be micro-optimized a bit by // assuming that after the first child we've already added everything. var childToDelete = currentFirstChild; while (childToDelete !== null) { deleteChild(returnFiber, childToDelete); childToDelete = childToDelete.sibling; } return null; } function mapRemainingChildren(returnFiber, currentFirstChild) { // Add the remaining children to a temporary map so that we can find them by // keys quickly. Implicit (null) keys get added to this set with their index // instead. var existingChildren = new Map(); var existingChild = currentFirstChild; while (existingChild !== null) { if (existingChild.key !== null) { existingChildren.set(existingChild.key, existingChild); } else { existingChildren.set(existingChild.index, existingChild); } existingChild = existingChild.sibling; } return existingChildren; } function useFiber(fiber, pendingProps) { // We currently set sibling to null and index to 0 here because it is easy // to forget to do before returning it. E.g. for the single child case. var clone = createWorkInProgress(fiber, pendingProps); clone.index = 0; clone.sibling = null; return clone; } function placeChild(newFiber, lastPlacedIndex, newIndex) { newFiber.index = newIndex; if (!shouldTrackSideEffects) { // During hydration, the useId algorithm needs to know which fibers are // part of a list of children (arrays, iterators). newFiber.flags |= Forked; return lastPlacedIndex; } var current = newFiber.alternate; if (current !== null) { var oldIndex = current.index; if (oldIndex < lastPlacedIndex) { // This is a move. newFiber.flags |= Placement; return lastPlacedIndex; } else { // This item can stay in place. return oldIndex; } } else { // This is an insertion. newFiber.flags |= Placement; return lastPlacedIndex; } } function placeSingleChild(newFiber) { // This is simpler for the single child case. We only need to do a // placement for inserting new children. if (shouldTrackSideEffects && newFiber.alternate === null) { newFiber.flags |= Placement; } return newFiber; } function updateTextNode(returnFiber, current, textContent, lanes) { if (current === null || current.tag !== HostText) { // Insert var created = createFiberFromText(textContent, returnFiber.mode, lanes); created.return = returnFiber; return created; } else { // Update var existing = useFiber(current, textContent); existing.return = returnFiber; return existing; } } function updateElement(returnFiber, current, element, lanes) { var elementType = element.type; if (elementType === REACT_FRAGMENT_TYPE) { return updateFragment( returnFiber, current, element.props.children, lanes, element.key ); } if (current !== null) { if ( current.elementType === elementType || // Keep this check inline so it only runs on the false path: isCompatibleFamilyForHotReloading(current, element) || // Lazy types should reconcile their resolved type. // We need to do this after the Hot Reloading check above, // because hot reloading has different semantics than prod because // it doesn't resuspend. So we can't let the call below suspend. (typeof elementType === "object" && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === current.type) ) { // Move based on index var existing = useFiber(current, element.props); existing.ref = coerceRef(returnFiber, current, element); existing.return = returnFiber; { existing._debugSource = element._source; existing._debugOwner = element._owner; } return existing; } } // Insert var created = createFiberFromElement(element, returnFiber.mode, lanes); created.ref = coerceRef(returnFiber, current, element); created.return = returnFiber; return created; } function updatePortal(returnFiber, current, portal, lanes) { if ( current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation ) { // Insert var created = createFiberFromPortal(portal, returnFiber.mode, lanes); created.return = returnFiber; return created; } else { // Update var existing = useFiber(current, portal.children || []); existing.return = returnFiber; return existing; } } function updateFragment(returnFiber, current, fragment, lanes, key) { if (current === null || current.tag !== Fragment) { // Insert var created = createFiberFromFragment( fragment, returnFiber.mode, lanes, key ); created.return = returnFiber; return created; } else { // Update var existing = useFiber(current, fragment); existing.return = returnFiber; return existing; } } function createChild(returnFiber, newChild, lanes) { if ( (typeof newChild === "string" && newChild !== "") || typeof newChild === "number" ) { // Text nodes don't have keys. If the previous node is implicitly keyed // we can continue to replace it without aborting even if it is not a text // node. var created = createFiberFromText("" + newChild, returnFiber.mode, lanes); created.return = returnFiber; return created; } if (typeof newChild === "object" && newChild !== null) { switch (newChild.$$typeof) { case REACT_ELEMENT_TYPE: { var _created = createFiberFromElement( newChild, returnFiber.mode, lanes ); _created.ref = coerceRef(returnFiber, null, newChild); _created.return = returnFiber; return _created; } case REACT_PORTAL_TYPE: { var _created2 = createFiberFromPortal( newChild, returnFiber.mode, lanes ); _created2.return = returnFiber; return _created2; } case REACT_LAZY_TYPE: { var payload = newChild._payload; var init = newChild._init; return createChild(returnFiber, init(payload), lanes); } } if (isArray(newChild) || getIteratorFn(newChild)) { var _created3 = createFiberFromFragment( newChild, returnFiber.mode, lanes, null ); _created3.return = returnFiber; return _created3; } throwOnInvalidObjectType(returnFiber, newChild); } { if (typeof newChild === "function") { warnOnFunctionType(returnFiber); } } return null; } function updateSlot(returnFiber, oldFiber, newChild, lanes) { // Update the fiber if the keys match, otherwise return null. var key = oldFiber !== null ? oldFiber.key : null; if ( (typeof newChild === "string" && newChild !== "") || typeof newChild === "number" ) { // Text nodes don't have keys. If the previous node is implicitly keyed // we can continue to replace it without aborting even if it is not a text // node. if (key !== null) { return null; } return updateTextNode(returnFiber, oldFiber, "" + newChild, lanes); } if (typeof newChild === "object" && newChild !== null) { switch (newChild.$$typeof) { case REACT_ELEMENT_TYPE: { if (newChild.key === key) { return updateElement(returnFiber, oldFiber, newChild, lanes); } else { return null; } } case REACT_PORTAL_TYPE: { if (newChild.key === key) { return updatePortal(returnFiber, oldFiber, newChild, lanes); } else { return null; } } case REACT_LAZY_TYPE: { var payload = newChild._payload; var init = newChild._init; return updateSlot(returnFiber, oldFiber, init(payload), lanes); } } if (isArray(newChild) || getIteratorFn(newChild)) { if (key !== null) { return null; } return updateFragment(returnFiber, oldFiber, newChild, lanes, null); } throwOnInvalidObjectType(returnFiber, newChild); } { if (typeof newChild === "function") { warnOnFunctionType(returnFiber); } } return null; } function updateFromMap( existingChildren, returnFiber, newIdx, newChild, lanes ) { if ( (typeof newChild === "string" && newChild !== "") || typeof newChild === "number" ) { // Text nodes don't have keys, so we neither have to check the old nor // new node for the key. If both are text nodes, they match. var matchedFiber = existingChildren.get(newIdx) || null; return updateTextNode(returnFiber, matchedFiber, "" + newChild, lanes); } if (typeof newChild === "object" && newChild !== null) { switch (newChild.$$typeof) { case REACT_ELEMENT_TYPE: { var _matchedFiber = existingChildren.get( newChild.key === null ? newIdx : newChild.key ) || null; return updateElement(returnFiber, _matchedFiber, newChild, lanes); } case REACT_PORTAL_TYPE: { var _matchedFiber2 = existingChildren.get( newChild.key === null ? newIdx : newChild.key ) || null; return updatePortal(returnFiber, _matchedFiber2, newChild, lanes); } case REACT_LAZY_TYPE: var payload = newChild._payload; var init = newChild._init; return updateFromMap( existingChildren, returnFiber, newIdx, init(payload), lanes ); } if (isArray(newChild) || getIteratorFn(newChild)) { var _matchedFiber3 = existingChildren.get(newIdx) || null; return updateFragment( returnFiber, _matchedFiber3, newChild, lanes, null ); } throwOnInvalidObjectType(returnFiber, newChild); } { if (typeof newChild === "function") { warnOnFunctionType(returnFiber); } } return null; } /** * Warns if there is a duplicate or missing key */ function warnOnInvalidKey(child, knownKeys, returnFiber) { { if (typeof child !== "object" || child === null) { return knownKeys; } switch (child.$$typeof) { case REACT_ELEMENT_TYPE: case REACT_PORTAL_TYPE: warnForMissingKey(child, returnFiber); var key = child.key; if (typeof key !== "string") { break; } if (knownKeys === null) { knownKeys = new Set(); knownKeys.add(key); break; } if (!knownKeys.has(key)) { knownKeys.add(key); break; } error( "Encountered two children with the same key, `%s`. " + "Keys should be unique so that components maintain their identity " + "across updates. Non-unique keys may cause children to be " + "duplicated and/or omitted — the behavior is unsupported and " + "could change in a future version.", key ); break; case REACT_LAZY_TYPE: var payload = child._payload; var init = child._init; warnOnInvalidKey(init(payload), knownKeys, returnFiber); break; } } return knownKeys; } function reconcileChildrenArray( returnFiber, currentFirstChild, newChildren, lanes ) { // This algorithm can't optimize by searching from both ends since we // don't have backpointers on fibers. I'm trying to see how far we can get // with that model. If it ends up not being worth the tradeoffs, we can // add it later. // Even with a two ended optimization, we'd want to optimize for the case // where there are few changes and brute force the comparison instead of // going for the Map. It'd like to explore hitting that path first in // forward-only mode and only go for the Map once we notice that we need // lots of look ahead. This doesn't handle reversal as well as two ended // search but that's unusual. Besides, for the two ended optimization to // work on Iterables, we'd need to copy the whole set. // In this first iteration, we'll just live with hitting the bad case // (adding everything to a Map) in for every insert/move. // If you change this code, also update reconcileChildrenIterator() which // uses the same algorithm. { // First, validate keys. var knownKeys = null; for (var i = 0; i < newChildren.length; i++) { var child = newChildren[i]; knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); } } var resultingFirstChild = null; var previousNewFiber = null; var oldFiber = currentFirstChild; var lastPlacedIndex = 0; var newIdx = 0; var nextOldFiber = null; for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { if (oldFiber.index > newIdx) { nextOldFiber = oldFiber; oldFiber = null; } else { nextOldFiber = oldFiber.sibling; } var newFiber = updateSlot( returnFiber, oldFiber, newChildren[newIdx], lanes ); if (newFiber === null) { // TODO: This breaks on empty slots like null children. That's // unfortunate because it triggers the slow path all the time. We need // a better way to communicate whether this was a miss or null, // boolean, undefined, etc. if (oldFiber === null) { oldFiber = nextOldFiber; } break; } if (shouldTrackSideEffects) { if (oldFiber && newFiber.alternate === null) { // We matched the slot, but we didn't reuse the existing fiber, so we // need to delete the existing child. deleteChild(returnFiber, oldFiber); } } lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); if (previousNewFiber === null) { // TODO: Move out of the loop. This only happens for the first run. resultingFirstChild = newFiber; } else { // TODO: Defer siblings if we're not at the right index for this slot. // I.e. if we had null values before, then we want to defer this // for each null value. However, we also don't want to call updateSlot // with the previous one. previousNewFiber.sibling = newFiber; } previousNewFiber = newFiber; oldFiber = nextOldFiber; } if (newIdx === newChildren.length) { // We've reached the end of the new children. We can delete the rest. deleteRemainingChildren(returnFiber, oldFiber); return resultingFirstChild; } if (oldFiber === null) { // If we don't have any more existing children we can choose a fast path // since the rest will all be insertions. for (; newIdx < newChildren.length; newIdx++) { var _newFiber = createChild(returnFiber, newChildren[newIdx], lanes); if (_newFiber === null) { continue; } lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); if (previousNewFiber === null) { // TODO: Move out of the loop. This only happens for the first run. resultingFirstChild = _newFiber; } else { previousNewFiber.sibling = _newFiber; } previousNewFiber = _newFiber; } return resultingFirstChild; } // Add all children to a key map for quick lookups. var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves. for (; newIdx < newChildren.length; newIdx++) { var _newFiber2 = updateFromMap( existingChildren, returnFiber, newIdx, newChildren[newIdx], lanes ); if (_newFiber2 !== null) { if (shouldTrackSideEffects) { if (_newFiber2.alternate !== null) { // The new fiber is a work in progress, but if there exists a // current, that means that we reused the fiber. We need to delete // it from the child list so that we don't add it to the deletion // list. existingChildren.delete( _newFiber2.key === null ? newIdx : _newFiber2.key ); } } lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); if (previousNewFiber === null) { resultingFirstChild = _newFiber2; } else { previousNewFiber.sibling = _newFiber2; } previousNewFiber = _newFiber2; } } if (shouldTrackSideEffects) { // Any existing children that weren't consumed above were deleted. We need // to add them to the deletion list. existingChildren.forEach(function(child) { return deleteChild(returnFiber, child); }); } return resultingFirstChild; } function reconcileChildrenIterator( returnFiber, currentFirstChild, newChildrenIterable, lanes ) { // This is the same implementation as reconcileChildrenArray(), // but using the iterator instead. var iteratorFn = getIteratorFn(newChildrenIterable); if (typeof iteratorFn !== "function") { throw new Error( "An object is not an iterable. This error is likely caused by a bug in " + "React. Please file an issue." ); } { // We don't support rendering Generators because it's a mutation. // See https://github.com/facebook/react/issues/12995 if ( typeof Symbol === "function" && // $FlowFixMe Flow doesn't know about toStringTag newChildrenIterable[Symbol.toStringTag] === "Generator" ) { if (!didWarnAboutGenerators) { error( "Using Generators as children is unsupported and will likely yield " + "unexpected results because enumerating a generator mutates it. " + "You may convert it to an array with `Array.from()` or the " + "`[...spread]` operator before rendering. Keep in mind " + "you might need to polyfill these features for older browsers." ); } didWarnAboutGenerators = true; } // Warn about using Maps as children if (newChildrenIterable.entries === iteratorFn) { if (!didWarnAboutMaps) { error( "Using Maps as children is not supported. " + "Use an array of keyed ReactElements instead." ); } didWarnAboutMaps = true; } // First, validate keys. // We'll get a different iterator later for the main pass. var _newChildren = iteratorFn.call(newChildrenIterable); if (_newChildren) { var knownKeys = null; var _step = _newChildren.next(); for (; !_step.done; _step = _newChildren.next()) { var child = _step.value; knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); } } } var newChildren = iteratorFn.call(newChildrenIterable); if (newChildren == null) { throw new Error("An iterable object provided no iterator."); } var resultingFirstChild = null; var previousNewFiber = null; var oldFiber = currentFirstChild; var lastPlacedIndex = 0; var newIdx = 0; var nextOldFiber = null; var step = newChildren.next(); for ( ; oldFiber !== null && !step.done; newIdx++, step = newChildren.next() ) { if (oldFiber.index > newIdx) { nextOldFiber = oldFiber; oldFiber = null; } else { nextOldFiber = oldFiber.sibling; } var newFiber = updateSlot(returnFiber, oldFiber, step.value, lanes); if (newFiber === null) { // TODO: This breaks on empty slots like null children. That's // unfortunate because it triggers the slow path all the time. We need // a better way to communicate whether this was a miss or null, // boolean, undefined, etc. if (oldFiber === null) { oldFiber = nextOldFiber; } break; } if (shouldTrackSideEffects) { if (oldFiber && newFiber.alternate === null) { // We matched the slot, but we didn't reuse the existing fiber, so we // need to delete the existing child. deleteChild(returnFiber, oldFiber); } } lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); if (previousNewFiber === null) { // TODO: Move out of the loop. This only happens for the first run. resultingFirstChild = newFiber; } else { // TODO: Defer siblings if we're not at the right index for this slot. // I.e. if we had null values before, then we want to defer this // for each null value. However, we also don't want to call updateSlot // with the previous one. previousNewFiber.sibling = newFiber; } previousNewFiber = newFiber; oldFiber = nextOldFiber; } if (step.done) { // We've reached the end of the new children. We can delete the rest. deleteRemainingChildren(returnFiber, oldFiber); return resultingFirstChild; } if (oldFiber === null) { // If we don't have any more existing children we can choose a fast path // since the rest will all be insertions. for (; !step.done; newIdx++, step = newChildren.next()) { var _newFiber3 = createChild(returnFiber, step.value, lanes); if (_newFiber3 === null) { continue; } lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); if (previousNewFiber === null) { // TODO: Move out of the loop. This only happens for the first run. resultingFirstChild = _newFiber3; } else { previousNewFiber.sibling = _newFiber3; } previousNewFiber = _newFiber3; } return resultingFirstChild; } // Add all children to a key map for quick lookups. var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves. for (; !step.done; newIdx++, step = newChildren.next()) { var _newFiber4 = updateFromMap( existingChildren, returnFiber, newIdx, step.value, lanes ); if (_newFiber4 !== null) { if (shouldTrackSideEffects) { if (_newFiber4.alternate !== null) { // The new fiber is a work in progress, but if there exists a // current, that means that we reused the fiber. We need to delete // it from the child list so that we don't add it to the deletion // list. existingChildren.delete( _newFiber4.key === null ? newIdx : _newFiber4.key ); } } lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); if (previousNewFiber === null) { resultingFirstChild = _newFiber4; } else { previousNewFiber.sibling = _newFiber4; } previousNewFiber = _newFiber4; } } if (shouldTrackSideEffects) { // Any existing children that weren't consumed above were deleted. We need // to add them to the deletion list. existingChildren.forEach(function(child) { return deleteChild(returnFiber, child); }); } return resultingFirstChild; } function reconcileSingleTextNode( returnFiber, currentFirstChild, textContent, lanes ) { // There's no need to check for keys on text nodes since we don't have a // way to define them. if (currentFirstChild !== null && currentFirstChild.tag === HostText) { // We already have an existing node so let's just update it and delete // the rest. deleteRemainingChildren(returnFiber, currentFirstChild.sibling); var existing = useFiber(currentFirstChild, textContent); existing.return = returnFiber; return existing; } // The existing first child is not a text node so we need to create one // and delete the existing ones. deleteRemainingChildren(returnFiber, currentFirstChild); var created = createFiberFromText(textContent, returnFiber.mode, lanes); created.return = returnFiber; return created; } function reconcileSingleElement( returnFiber, currentFirstChild, element, lanes ) { var key = element.key; var child = currentFirstChild; while (child !== null) { // TODO: If key === null and child.key === null, then this only applies to // the first item in the list. if (child.key === key) { var elementType = element.type; if (elementType === REACT_FRAGMENT_TYPE) { if (child.tag === Fragment) { deleteRemainingChildren(returnFiber, child.sibling); var existing = useFiber(child, element.props.children); existing.return = returnFiber; { existing._debugSource = element._source; existing._debugOwner = element._owner; } return existing; } } else { if ( child.elementType === elementType || // Keep this check inline so it only runs on the false path: isCompatibleFamilyForHotReloading(child, element) || // Lazy types should reconcile their resolved type. // We need to do this after the Hot Reloading check above, // because hot reloading has different semantics than prod because // it doesn't resuspend. So we can't let the call below suspend. (typeof elementType === "object" && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === child.type) ) { deleteRemainingChildren(returnFiber, child.sibling); var _existing = useFiber(child, element.props); _existing.ref = coerceRef(returnFiber, child, element); _existing.return = returnFiber; { _existing._debugSource = element._source; _existing._debugOwner = element._owner; } return _existing; } } // Didn't match. deleteRemainingChildren(returnFiber, child); break; } else { deleteChild(returnFiber, child); } child = child.sibling; } if (element.type === REACT_FRAGMENT_TYPE) { var created = createFiberFromFragment( element.props.children, returnFiber.mode, lanes, element.key ); created.return = returnFiber; return created; } else { var _created4 = createFiberFromElement(element, returnFiber.mode, lanes); _created4.ref = coerceRef(returnFiber, currentFirstChild, element); _created4.return = returnFiber; return _created4; } } function reconcileSinglePortal( returnFiber, currentFirstChild, portal, lanes ) { var key = portal.key; var child = currentFirstChild; while (child !== null) { // TODO: If key === null and child.key === null, then this only applies to // the first item in the list. if (child.key === key) { if ( child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation ) { deleteRemainingChildren(returnFiber, child.sibling); var existing = useFiber(child, portal.children || []); existing.return = returnFiber; return existing; } else { deleteRemainingChildren(returnFiber, child); break; } } else { deleteChild(returnFiber, child); } child = child.sibling; } var created = createFiberFromPortal(portal, returnFiber.mode, lanes); created.return = returnFiber; return created; } // This API will tag the children with the side-effect of the reconciliation // itself. They will be added to the side-effect list as we pass through the // children and the parent. function reconcileChildFibers( returnFiber, currentFirstChild, newChild, lanes ) { // This function is not recursive. // If the top level item is an array, we treat it as a set of children, // not as a fragment. Nested arrays on the other hand will be treated as // fragment nodes. Recursion happens at the normal flow. // Handle top level unkeyed fragments as if they were arrays. // This leads to an ambiguity between <>{[...]} and <>.... // We treat the ambiguous cases above the same. var isUnkeyedTopLevelFragment = typeof newChild === "object" && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null; if (isUnkeyedTopLevelFragment) { newChild = newChild.props.children; } // Handle object types if (typeof newChild === "object" && newChild !== null) { switch (newChild.$$typeof) { case REACT_ELEMENT_TYPE: return placeSingleChild( reconcileSingleElement( returnFiber, currentFirstChild, newChild, lanes ) ); case REACT_PORTAL_TYPE: return placeSingleChild( reconcileSinglePortal( returnFiber, currentFirstChild, newChild, lanes ) ); case REACT_LAZY_TYPE: var payload = newChild._payload; var init = newChild._init; // TODO: This function is supposed to be non-recursive. return reconcileChildFibers( returnFiber, currentFirstChild, init(payload), lanes ); } if (isArray(newChild)) { return reconcileChildrenArray( returnFiber, currentFirstChild, newChild, lanes ); } if (getIteratorFn(newChild)) { return reconcileChildrenIterator( returnFiber, currentFirstChild, newChild, lanes ); } throwOnInvalidObjectType(returnFiber, newChild); } if ( (typeof newChild === "string" && newChild !== "") || typeof newChild === "number" ) { return placeSingleChild( reconcileSingleTextNode( returnFiber, currentFirstChild, "" + newChild, lanes ) ); } { if (typeof newChild === "function") { warnOnFunctionType(returnFiber); } } // Remaining cases are all treated as empty. return deleteRemainingChildren(returnFiber, currentFirstChild); } return reconcileChildFibers; } var reconcileChildFibers = ChildReconciler(true); var mountChildFibers = ChildReconciler(false); function cloneChildFibers(current, workInProgress) { if (current !== null && workInProgress.child !== current.child) { throw new Error("Resuming work not yet implemented."); } if (workInProgress.child === null) { return; } var currentChild = workInProgress.child; var newChild = createWorkInProgress(currentChild, currentChild.pendingProps); workInProgress.child = newChild; newChild.return = workInProgress; while (currentChild.sibling !== null) { currentChild = currentChild.sibling; newChild = newChild.sibling = createWorkInProgress( currentChild, currentChild.pendingProps ); newChild.return = workInProgress; } newChild.sibling = null; } // Reset a workInProgress child set to prepare it for a second pass. function resetChildFibers(workInProgress, lanes) { var child = workInProgress.child; while (child !== null) { resetWorkInProgress(child, lanes); child = child.sibling; } } var NO_CONTEXT = {}; var contextStackCursor$1 = createCursor(NO_CONTEXT); var contextFiberStackCursor = createCursor(NO_CONTEXT); var rootInstanceStackCursor = createCursor(NO_CONTEXT); function requiredContext(c) { if (c === NO_CONTEXT) { throw new Error( "Expected host context to exist. This error is likely caused by a bug " + "in React. Please file an issue." ); } return c; } function getRootHostContainer() { var rootInstance = requiredContext(rootInstanceStackCursor.current); return rootInstance; } function pushHostContainer(fiber, nextRootInstance) { // Push current root instance onto the stack; // This allows us to reset root when portals are popped. push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. // This enables us to pop only Fibers that provide unique contexts. push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. // However, we can't just call getRootHostContext() and push it because // we'd have a different number of entries on the stack depending on // whether getRootHostContext() throws somewhere in renderer code or not. // So we push an empty value first. This lets us safely unwind on errors. push(contextStackCursor$1, NO_CONTEXT, fiber); var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. pop(contextStackCursor$1, fiber); push(contextStackCursor$1, nextRootContext, fiber); } function popHostContainer(fiber) { pop(contextStackCursor$1, fiber); pop(contextFiberStackCursor, fiber); pop(rootInstanceStackCursor, fiber); } function getHostContext() { var context = requiredContext(contextStackCursor$1.current); return context; } function pushHostContext(fiber) { var rootInstance = requiredContext(rootInstanceStackCursor.current); var context = requiredContext(contextStackCursor$1.current); var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique. if (context === nextContext) { return; } // Track the context and the Fiber that provided it. // This enables us to pop only Fibers that provide unique contexts. push(contextFiberStackCursor, fiber, fiber); push(contextStackCursor$1, nextContext, fiber); } function popHostContext(fiber) { // Do not pop unless this Fiber provided the current context. // pushHostContext() only pushes Fibers that provide unique contexts. if (contextFiberStackCursor.current !== fiber) { return; } pop(contextStackCursor$1, fiber); pop(contextFiberStackCursor, fiber); } var DefaultSuspenseContext = 0; // The Suspense Context is split into two parts. The lower bits is // inherited deeply down the subtree. The upper bits only affect // this immediate suspense boundary and gets reset each new // boundary or suspense list. var SubtreeSuspenseContextMask = 1; // Subtree Flags: // InvisibleParentSuspenseContext indicates that one of our parent Suspense // boundaries is not currently showing visible main content. // Either because it is already showing a fallback or is not mounted at all. // We can use this to determine if it is desirable to trigger a fallback at // the parent. If not, then we might need to trigger undesirable boundaries // and/or suspend the commit to avoid hiding the parent content. var InvisibleParentSuspenseContext = 1; // Shallow Flags: // ForceSuspenseFallback can be used by SuspenseList to force newly added // items into their fallback state during one of the render passes. var ForceSuspenseFallback = 2; var suspenseStackCursor = createCursor(DefaultSuspenseContext); function hasSuspenseContext(parentContext, flag) { return (parentContext & flag) !== 0; } function setDefaultShallowSuspenseContext(parentContext) { return parentContext & SubtreeSuspenseContextMask; } function setShallowSuspenseContext(parentContext, shallowContext) { return (parentContext & SubtreeSuspenseContextMask) | shallowContext; } function addSubtreeSuspenseContext(parentContext, subtreeContext) { return parentContext | subtreeContext; } function pushSuspenseContext(fiber, newContext) { push(suspenseStackCursor, newContext, fiber); } function popSuspenseContext(fiber) { pop(suspenseStackCursor, fiber); } function shouldCaptureSuspense(workInProgress, hasInvisibleParent) { // If it was the primary children that just suspended, capture and render the // fallback. Otherwise, don't capture and bubble to the next boundary. var nextState = workInProgress.memoizedState; if (nextState !== null) { if (nextState.dehydrated !== null) { // A dehydrated boundary always captures. return true; } return false; } var props = workInProgress.memoizedProps; // Regular boundaries always capture. { return true; } // If it's a boundary we should avoid, then we prefer to bubble up to the } function findFirstSuspended(row) { var node = row; while (node !== null) { if (node.tag === SuspenseComponent) { var state = node.memoizedState; if (state !== null) { var dehydrated = state.dehydrated; if ( dehydrated === null || isSuspenseInstancePending() || isSuspenseInstanceFallback() ) { return node; } } } else if ( node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't // keep track of whether it suspended or not. node.memoizedProps.revealOrder !== undefined ) { var didSuspend = (node.flags & DidCapture) !== NoFlags; if (didSuspend) { return node; } } else if (node.child !== null) { node.child.return = node; node = node.child; continue; } if (node === row) { return null; } while (node.sibling === null) { if (node.return === null || node.return === row) { return null; } node = node.return; } node.sibling.return = node.return; node = node.sibling; } return null; } var NoFlags$1 = /* */ 0; // Represents whether effect should fire. var HasEffect = /* */ 1; // Represents the phase in which the effect (not the clean-up) fires. var Insertion = /* */ 2; var Layout = /* */ 4; var Passive$1 = /* */ 8; // and should be reset before starting a new render. // This tracks which mutable sources need to be reset after a render. var workInProgressSources = []; function resetWorkInProgressVersions() { for (var i = 0; i < workInProgressSources.length; i++) { var mutableSource = workInProgressSources[i]; { mutableSource._workInProgressVersionPrimary = null; } } workInProgressSources.length = 0; } var ReactCurrentDispatcher$1 = ReactSharedInternals.ReactCurrentDispatcher, ReactCurrentBatchConfig$1 = ReactSharedInternals.ReactCurrentBatchConfig; var didWarnAboutMismatchedHooksForComponent; var didWarnUncachedGetSnapshot; { didWarnAboutMismatchedHooksForComponent = new Set(); } // These are set right before calling the component. var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from // the work-in-progress hook. var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The // current hook list is the list that belongs to the current fiber. The // work-in-progress hook list is a new list that will be added to the // work-in-progress fiber. var currentHook = null; var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This // does not get reset if we do another render pass; only when we're completely // finished evaluating this component. This is an optimization so we know // whether we need to clear render phase updates after a throw. var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This // gets reset after each attempt. // TODO: Maybe there's some way to consolidate this with // `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. var didScheduleRenderPhaseUpdateDuringThisPass = false; // Counts the number of useId hooks in this component. // hydration). This counter is global, so client ids are not stable across // render attempts. var globalClientIdCounter = 0; var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. // The list stores the order of hooks used during the initial render (mount). // Subsequent renders (updates) reference this list. var hookTypesDev = null; var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore // the dependencies for Hooks that need them (e.g. useEffect or useMemo). // When true, such Hooks will always be "remounted". Only used during hot reload. var ignorePreviousDependencies = false; function mountHookTypesDev() { { var hookName = currentHookNameInDev; if (hookTypesDev === null) { hookTypesDev = [hookName]; } else { hookTypesDev.push(hookName); } } } function updateHookTypesDev() { { var hookName = currentHookNameInDev; if (hookTypesDev !== null) { hookTypesUpdateIndexDev++; if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { warnOnHookMismatchInDev(hookName); } } } } function checkDepsAreArrayDev(deps) { { if (deps !== undefined && deps !== null && !isArray(deps)) { // Verify deps, but only on mount to avoid extra checks. // It's unlikely their type would change as usually you define them inline. error( "%s received a final argument that is not an array (instead, received `%s`). When " + "specified, the final argument must be an array.", currentHookNameInDev, typeof deps ); } } } function warnOnHookMismatchInDev(currentHookName) { { var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { didWarnAboutMismatchedHooksForComponent.add(componentName); if (hookTypesDev !== null) { var table = ""; var secondColumnStart = 30; for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { var oldHookName = hookTypesDev[i]; var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up // lol @ IE not supporting String#repeat while (row.length < secondColumnStart) { row += " "; } row += newHookName + "\n"; table += row; } error( "React has detected a change in the order of Hooks called by %s. " + "This will lead to bugs and errors if not fixed. " + "For more information, read the Rules of Hooks: https://reactjs.org/link/rules-of-hooks\n\n" + " Previous render Next render\n" + " ------------------------------------------------------\n" + "%s" + " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n", componentName, table ); } } } } function throwInvalidHookError() { throw new Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for" + " one of the following reasons:\n" + "1. You might have mismatching versions of React and the renderer (such as React DOM)\n" + "2. You might be breaking the Rules of Hooks\n" + "3. You might have more than one copy of React in the same app\n" + "See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem." ); } function areHookInputsEqual(nextDeps, prevDeps) { { if (ignorePreviousDependencies) { // Only true when this component is being hot reloaded. return false; } } if (prevDeps === null) { { error( "%s received a final argument during this render, but not during " + "the previous render. Even though the final argument is optional, " + "its type cannot change between renders.", currentHookNameInDev ); } return false; } { // Don't bother comparing lengths in prod because these arrays should be // passed inline. if (nextDeps.length !== prevDeps.length) { error( "The final argument passed to %s changed size between renders. The " + "order and size of this array must remain constant.\n\n" + "Previous: %s\n" + "Incoming: %s", currentHookNameInDev, "[" + prevDeps.join(", ") + "]", "[" + nextDeps.join(", ") + "]" ); } } for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { if (objectIs(nextDeps[i], prevDeps[i])) { continue; } return false; } return true; } function renderWithHooks( current, workInProgress, Component, props, secondArg, nextRenderLanes ) { renderLanes = nextRenderLanes; currentlyRenderingFiber$1 = workInProgress; { hookTypesDev = current !== null ? current._debugHookTypes : null; hookTypesUpdateIndexDev = -1; // Used for hot reloading: ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; } workInProgress.memoizedState = null; workInProgress.updateQueue = null; workInProgress.lanes = NoLanes; // The following should have already been reset // currentHook = null; // workInProgressHook = null; // didScheduleRenderPhaseUpdate = false; // localIdCounter = 0; // TODO Warn if no hooks are used at all during mount, then some are used during update. // Currently we will identify the update render as a mount because memoizedState === null. // This is tricky because it's valid for certain types of components (e.g. React.lazy) // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. // Non-stateful hooks (e.g. context) don't get added to memoizedState, // so memoizedState would be null during updates and mounts. { if (current !== null && current.memoizedState !== null) { ReactCurrentDispatcher$1.current = HooksDispatcherOnUpdateInDEV; } else if (hookTypesDev !== null) { // This dispatcher handles an edge case where a component is updating, // but no stateful hooks have been used. // We want to match the production code behavior (which will use HooksDispatcherOnMount), // but with the extra DEV validation to ensure hooks ordering hasn't changed. // This dispatcher does that. ReactCurrentDispatcher$1.current = HooksDispatcherOnMountWithHookTypesInDEV; } else { ReactCurrentDispatcher$1.current = HooksDispatcherOnMountInDEV; } } var children = Component(props, secondArg); // Check if there was a render phase update if (didScheduleRenderPhaseUpdateDuringThisPass) { // Keep rendering in a loop for as long as render phase updates continue to // be scheduled. Use a counter to prevent infinite loops. var numberOfReRenders = 0; do { didScheduleRenderPhaseUpdateDuringThisPass = false; if (numberOfReRenders >= RE_RENDER_LIMIT) { throw new Error( "Too many re-renders. React limits the number of renders to prevent " + "an infinite loop." ); } numberOfReRenders += 1; { // Even when hot reloading, allow dependencies to stabilize // after first render to prevent infinite render phase updates. ignorePreviousDependencies = false; } // Start over from the beginning of the list currentHook = null; workInProgressHook = null; workInProgress.updateQueue = null; { // Also validate hook order for cascading updates. hookTypesUpdateIndexDev = -1; } ReactCurrentDispatcher$1.current = HooksDispatcherOnRerenderInDEV; children = Component(props, secondArg); } while (didScheduleRenderPhaseUpdateDuringThisPass); } // We can assume the previous dispatcher is always this one, since we set it // at the beginning of the render phase and there's no re-entrance. ReactCurrentDispatcher$1.current = ContextOnlyDispatcher; { workInProgress._debugHookTypes = hookTypesDev; } // This check uses currentHook so that it works the same in DEV and prod bundles. // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null; renderLanes = NoLanes; currentlyRenderingFiber$1 = null; currentHook = null; workInProgressHook = null; { currentHookNameInDev = null; hookTypesDev = null; hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last // render. If this fires, it suggests that we incorrectly reset the static // flags in some other part of the codebase. This has happened before, for // example, in the SuspenseList implementation. if ( current !== null && (current.flags & StaticMask) !== (workInProgress.flags & StaticMask) && // Disable this warning in legacy mode, because legacy Suspense is weird // and creates false positives. To make this work in legacy mode, we'd // need to mark fibers that commit in an incomplete state, somehow. For // now I'll disable the warning that most of the bugs that would trigger // it are either exclusive to concurrent mode or exist in both. (current.mode & ConcurrentMode) !== NoMode ) { error( "Internal React error: Expected static flag was missing. Please " + "notify the React team." ); } } didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook // localIdCounter = 0; if (didRenderTooFewHooks) { throw new Error( "Rendered fewer hooks than expected. This may be caused by an accidental " + "early return statement." ); } return children; } function bailoutHooks(current, workInProgress, lanes) { workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the // complete phase (bubbleProperties). { workInProgress.flags &= ~(Passive | Update); } current.lanes = removeLanes(current.lanes, lanes); } function resetHooksAfterThrow() { // We can assume the previous dispatcher is always this one, since we set it // at the beginning of the render phase and there's no re-entrance. ReactCurrentDispatcher$1.current = ContextOnlyDispatcher; if (didScheduleRenderPhaseUpdate) { // There were render phase updates. These are only valid for this render // phase, which we are now aborting. Remove the updates from the queues so // they do not persist to the next render. Do not remove updates from hooks // that weren't processed. // // Only reset the updates from the queue if it has a clone. If it does // not have a clone, that means it wasn't processed, and the updates were // scheduled before we entered the render phase. var hook = currentlyRenderingFiber$1.memoizedState; while (hook !== null) { var queue = hook.queue; if (queue !== null) { queue.pending = null; } hook = hook.next; } didScheduleRenderPhaseUpdate = false; } renderLanes = NoLanes; currentlyRenderingFiber$1 = null; currentHook = null; workInProgressHook = null; { hookTypesDev = null; hookTypesUpdateIndexDev = -1; currentHookNameInDev = null; isUpdatingOpaqueValueInRenderPhase = false; } didScheduleRenderPhaseUpdateDuringThisPass = false; } function mountWorkInProgressHook() { var hook = { memoizedState: null, baseState: null, baseQueue: null, queue: null, next: null }; if (workInProgressHook === null) { // This is the first hook in the list currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; } else { // Append to the end of the list workInProgressHook = workInProgressHook.next = hook; } return workInProgressHook; } function updateWorkInProgressHook() { // This function is used both for updates and for re-renders triggered by a // render phase update. It assumes there is either a current hook we can // clone, or a work-in-progress hook from a previous render pass that we can // use as a base. When we reach the end of the base list, we must switch to // the dispatcher used for mounts. var nextCurrentHook; if (currentHook === null) { var current = currentlyRenderingFiber$1.alternate; if (current !== null) { nextCurrentHook = current.memoizedState; } else { nextCurrentHook = null; } } else { nextCurrentHook = currentHook.next; } var nextWorkInProgressHook; if (workInProgressHook === null) { nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; } else { nextWorkInProgressHook = workInProgressHook.next; } if (nextWorkInProgressHook !== null) { // There's already a work-in-progress. Reuse it. workInProgressHook = nextWorkInProgressHook; nextWorkInProgressHook = workInProgressHook.next; currentHook = nextCurrentHook; } else { // Clone from the current hook. if (nextCurrentHook === null) { throw new Error("Rendered more hooks than during the previous render."); } currentHook = nextCurrentHook; var newHook = { memoizedState: currentHook.memoizedState, baseState: currentHook.baseState, baseQueue: currentHook.baseQueue, queue: currentHook.queue, next: null }; if (workInProgressHook === null) { // This is the first hook in the list. currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook; } else { // Append to the end of the list. workInProgressHook = workInProgressHook.next = newHook; } } return workInProgressHook; } function createFunctionComponentUpdateQueue() { return { lastEffect: null, stores: null }; } function basicStateReducer(state, action) { // $FlowFixMe: Flow doesn't like mixed types return typeof action === "function" ? action(state) : action; } function mountReducer(reducer, initialArg, init) { var hook = mountWorkInProgressHook(); var initialState; if (init !== undefined) { initialState = init(initialArg); } else { initialState = initialArg; } hook.memoizedState = hook.baseState = initialState; var queue = { pending: null, interleaved: null, lanes: NoLanes, dispatch: null, lastRenderedReducer: reducer, lastRenderedState: initialState }; hook.queue = queue; var dispatch = (queue.dispatch = dispatchReducerAction.bind( null, currentlyRenderingFiber$1, queue )); return [hook.memoizedState, dispatch]; } function updateReducer(reducer, initialArg, init) { var hook = updateWorkInProgressHook(); var queue = hook.queue; if (queue === null) { throw new Error( "Should have a queue. This is likely a bug in React. Please file an issue." ); } queue.lastRenderedReducer = reducer; var current = currentHook; // The last rebase update that is NOT part of the base state. var baseQueue = current.baseQueue; // The last pending update that hasn't been processed yet. var pendingQueue = queue.pending; if (pendingQueue !== null) { // We have new updates that haven't been processed yet. // We'll add them to the base queue. if (baseQueue !== null) { // Merge the pending queue and the base queue. var baseFirst = baseQueue.next; var pendingFirst = pendingQueue.next; baseQueue.next = pendingFirst; pendingQueue.next = baseFirst; } { if (current.baseQueue !== baseQueue) { // Internal invariant that should never happen, but feasibly could in // the future if we implement resuming, or some form of that. error( "Internal error: Expected work-in-progress queue to be a clone. " + "This is a bug in React." ); } } current.baseQueue = baseQueue = pendingQueue; queue.pending = null; } if (baseQueue !== null) { // We have a queue to process. var first = baseQueue.next; var newState = current.baseState; var newBaseState = null; var newBaseQueueFirst = null; var newBaseQueueLast = null; var update = first; do { var updateLane = update.lane; if (!isSubsetOfLanes(renderLanes, updateLane)) { // Priority is insufficient. Skip this update. If this is the first // skipped update, the previous update/state is the new base // update/state. var clone = { lane: updateLane, action: update.action, hasEagerState: update.hasEagerState, eagerState: update.eagerState, next: null }; if (newBaseQueueLast === null) { newBaseQueueFirst = newBaseQueueLast = clone; newBaseState = newState; } else { newBaseQueueLast = newBaseQueueLast.next = clone; } // Update the remaining priority in the queue. // TODO: Don't need to accumulate this. Instead, we can remove // renderLanes from the original lanes. currentlyRenderingFiber$1.lanes = mergeLanes( currentlyRenderingFiber$1.lanes, updateLane ); markSkippedUpdateLanes(updateLane); } else { // This update does have sufficient priority. if (newBaseQueueLast !== null) { var _clone = { // This update is going to be committed so we never want uncommit // it. Using NoLane works because 0 is a subset of all bitmasks, so // this will never be skipped by the check above. lane: NoLane, action: update.action, hasEagerState: update.hasEagerState, eagerState: update.eagerState, next: null }; newBaseQueueLast = newBaseQueueLast.next = _clone; } // Process this update. if (update.hasEagerState) { // If this update is a state update (not a reducer) and was processed eagerly, // we can use the eagerly computed state newState = update.eagerState; } else { var action = update.action; newState = reducer(newState, action); } } update = update.next; } while (update !== null && update !== first); if (newBaseQueueLast === null) { newBaseState = newState; } else { newBaseQueueLast.next = newBaseQueueFirst; } // Mark that the fiber performed work, but only if the new state is // different from the current state. if (!objectIs(newState, hook.memoizedState)) { markWorkInProgressReceivedUpdate(); } hook.memoizedState = newState; hook.baseState = newBaseState; hook.baseQueue = newBaseQueueLast; queue.lastRenderedState = newState; } // Interleaved updates are stored on a separate queue. We aren't going to // process them during this render, but we do need to track which lanes // are remaining. var lastInterleaved = queue.interleaved; if (lastInterleaved !== null) { var interleaved = lastInterleaved; do { var interleavedLane = interleaved.lane; currentlyRenderingFiber$1.lanes = mergeLanes( currentlyRenderingFiber$1.lanes, interleavedLane ); markSkippedUpdateLanes(interleavedLane); interleaved = interleaved.next; } while (interleaved !== lastInterleaved); } else if (baseQueue === null) { // `queue.lanes` is used for entangling transitions. We can set it back to // zero once the queue is empty. queue.lanes = NoLanes; } var dispatch = queue.dispatch; return [hook.memoizedState, dispatch]; } function rerenderReducer(reducer, initialArg, init) { var hook = updateWorkInProgressHook(); var queue = hook.queue; if (queue === null) { throw new Error( "Should have a queue. This is likely a bug in React. Please file an issue." ); } queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous // work-in-progress hook. var dispatch = queue.dispatch; var lastRenderPhaseUpdate = queue.pending; var newState = hook.memoizedState; if (lastRenderPhaseUpdate !== null) { // The queue doesn't persist past this render pass. queue.pending = null; var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; var update = firstRenderPhaseUpdate; do { // Process this render phase update. We don't have to check the // priority because it will always be the same as the current // render's. var action = update.action; newState = reducer(newState, action); update = update.next; } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is // different from the current state. if (!objectIs(newState, hook.memoizedState)) { markWorkInProgressReceivedUpdate(); } hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to // the base state unless the queue is empty. // TODO: Not sure if this is the desired semantics, but it's what we // do for gDSFP. I can't remember why. if (hook.baseQueue === null) { hook.baseState = newState; } queue.lastRenderedState = newState; } return [newState, dispatch]; } function mountMutableSource(source, getSnapshot, subscribe) { { return undefined; } } function updateMutableSource(source, getSnapshot, subscribe) { { return undefined; } } function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { var fiber = currentlyRenderingFiber$1; var hook = mountWorkInProgressHook(); var nextSnapshot; { nextSnapshot = getSnapshot(); { if (!didWarnUncachedGetSnapshot) { var cachedSnapshot = getSnapshot(); if (!objectIs(nextSnapshot, cachedSnapshot)) { error( "The result of getSnapshot should be cached to avoid an infinite loop" ); didWarnUncachedGetSnapshot = true; } } } // Unless we're rendering a blocking lane, schedule a consistency check. // Right before committing, we will walk the tree and check if any of the // stores were mutated. // // We won't do this if we're hydrating server-rendered content, because if // the content is stale, it's already visible anyway. Instead we'll patch // it up in a passive effect. var root = getWorkInProgressRoot(); if (root === null) { throw new Error( "Expected a work-in-progress root. This is a bug in React. Please file an issue." ); } if (!includesBlockingLane(root, renderLanes)) { pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } } // Read the current snapshot from the store on every render. This breaks the // normal rules of React, and only works because store updates are // always synchronous. hook.memoizedState = nextSnapshot; var inst = { value: nextSnapshot, getSnapshot: getSnapshot }; hook.queue = inst; // Schedule an effect to subscribe to the store. mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Schedule an effect to update the mutable instance fields. We will update // this whenever subscribe, getSnapshot, or value changes. Because there's no // clean-up function, and we track the deps correctly, we can call pushEffect // directly, without storing any additional state. For the same reason, we // don't need to set a static flag, either. // TODO: We can move this to the passive phase once we add a pre-commit // consistency check. See the next comment. fiber.flags |= Passive; pushEffect( HasEffect | Passive$1, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), undefined, null ); return nextSnapshot; } function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { var fiber = currentlyRenderingFiber$1; var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the // normal rules of React, and only works because store updates are // always synchronous. var nextSnapshot = getSnapshot(); { if (!didWarnUncachedGetSnapshot) { var cachedSnapshot = getSnapshot(); if (!objectIs(nextSnapshot, cachedSnapshot)) { error( "The result of getSnapshot should be cached to avoid an infinite loop" ); didWarnUncachedGetSnapshot = true; } } } var prevSnapshot = hook.memoizedState; var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); if (snapshotChanged) { hook.memoizedState = nextSnapshot; markWorkInProgressReceivedUpdate(); } var inst = hook.queue; updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ subscribe ]); // Whenever getSnapshot or subscribe changes, we need to check in the // commit phase if there was an interleaved mutation. In concurrent mode // this can happen all the time, but even in synchronous mode, an earlier // effect may have mutated the store. if ( inst.getSnapshot !== getSnapshot || snapshotChanged || // Check if the susbcribe function changed. We can save some memory by // checking whether we scheduled a subscription effect above. (workInProgressHook !== null && workInProgressHook.memoizedState.tag & HasEffect) ) { fiber.flags |= Passive; pushEffect( HasEffect | Passive$1, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), undefined, null ); // Unless we're rendering a blocking lane, schedule a consistency check. // Right before committing, we will walk the tree and check if any of the // stores were mutated. var root = getWorkInProgressRoot(); if (root === null) { throw new Error( "Expected a work-in-progress root. This is a bug in React. Please file an issue." ); } if (!includesBlockingLane(root, renderLanes)) { pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } } return nextSnapshot; } function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { fiber.flags |= StoreConsistency; var check = { getSnapshot: getSnapshot, value: renderedSnapshot }; var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; if (componentUpdateQueue === null) { componentUpdateQueue = createFunctionComponentUpdateQueue(); currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; componentUpdateQueue.stores = [check]; } else { var stores = componentUpdateQueue.stores; if (stores === null) { componentUpdateQueue.stores = [check]; } else { stores.push(check); } } } function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { // These are updated in the passive phase inst.value = nextSnapshot; inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could // have been in an event that fired before the passive effects, or it could // have been in a layout effect. In that case, we would have used the old // snapsho and getSnapshot values to bail out. We need to check one more time. if (checkIfSnapshotChanged(inst)) { // Force a re-render. forceStoreRerender(fiber); } } function subscribeToStore(fiber, inst, subscribe) { var handleStoreChange = function() { // The store changed. Check if the snapshot changed since the last time we // read from the store. if (checkIfSnapshotChanged(inst)) { // Force a re-render. forceStoreRerender(fiber); } }; // Subscribe to the store and return a clean-up function. return subscribe(handleStoreChange); } function checkIfSnapshotChanged(inst) { var latestGetSnapshot = inst.getSnapshot; var prevValue = inst.value; try { var nextValue = latestGetSnapshot(); return !objectIs(prevValue, nextValue); } catch (error) { return true; } } function forceStoreRerender(fiber) { var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } } function mountState(initialState) { var hook = mountWorkInProgressHook(); if (typeof initialState === "function") { // $FlowFixMe: Flow doesn't like mixed types initialState = initialState(); } hook.memoizedState = hook.baseState = initialState; var queue = { pending: null, interleaved: null, lanes: NoLanes, dispatch: null, lastRenderedReducer: basicStateReducer, lastRenderedState: initialState }; hook.queue = queue; var dispatch = (queue.dispatch = dispatchSetState.bind( null, currentlyRenderingFiber$1, queue )); return [hook.memoizedState, dispatch]; } function updateState(initialState) { return updateReducer(basicStateReducer); } function rerenderState(initialState) { return rerenderReducer(basicStateReducer); } function pushEffect(tag, create, destroy, deps) { var effect = { tag: tag, create: create, destroy: destroy, deps: deps, // Circular next: null }; var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; if (componentUpdateQueue === null) { componentUpdateQueue = createFunctionComponentUpdateQueue(); currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; componentUpdateQueue.lastEffect = effect.next = effect; } else { var lastEffect = componentUpdateQueue.lastEffect; if (lastEffect === null) { componentUpdateQueue.lastEffect = effect.next = effect; } else { var firstEffect = lastEffect.next; lastEffect.next = effect; effect.next = firstEffect; componentUpdateQueue.lastEffect = effect; } } return effect; } function mountRef(initialValue) { var hook = mountWorkInProgressHook(); { var _ref2 = { current: initialValue }; hook.memoizedState = _ref2; return _ref2; } } function updateRef(initialValue) { var hook = updateWorkInProgressHook(); return hook.memoizedState; } function mountEffectImpl(fiberFlags, hookFlags, create, deps) { var hook = mountWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; currentlyRenderingFiber$1.flags |= fiberFlags; hook.memoizedState = pushEffect( HasEffect | hookFlags, create, undefined, nextDeps ); } function updateEffectImpl(fiberFlags, hookFlags, create, deps) { var hook = updateWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; var destroy = undefined; if (currentHook !== null) { var prevEffect = currentHook.memoizedState; destroy = prevEffect.destroy; if (nextDeps !== null) { var prevDeps = prevEffect.deps; if (areHookInputsEqual(nextDeps, prevDeps)) { hook.memoizedState = pushEffect(hookFlags, create, destroy, nextDeps); return; } } } currentlyRenderingFiber$1.flags |= fiberFlags; hook.memoizedState = pushEffect( HasEffect | hookFlags, create, destroy, nextDeps ); } function mountEffect(create, deps) { { return mountEffectImpl(Passive | PassiveStatic, Passive$1, create, deps); } } function updateEffect(create, deps) { return updateEffectImpl(Passive, Passive$1, create, deps); } function mountInsertionEffect(create, deps) { return mountEffectImpl(Update, Insertion, create, deps); } function updateInsertionEffect(create, deps) { return updateEffectImpl(Update, Insertion, create, deps); } function mountLayoutEffect(create, deps) { var fiberFlags = Update; return mountEffectImpl(fiberFlags, Layout, create, deps); } function updateLayoutEffect(create, deps) { return updateEffectImpl(Update, Layout, create, deps); } function imperativeHandleEffect(create, ref) { if (typeof ref === "function") { var refCallback = ref; var _inst = create(); refCallback(_inst); return function() { refCallback(null); }; } else if (ref !== null && ref !== undefined) { var refObject = ref; { if (!refObject.hasOwnProperty("current")) { error( "Expected useImperativeHandle() first argument to either be a " + "ref callback or React.createRef() object. Instead received: %s.", "an object with keys {" + Object.keys(refObject).join(", ") + "}" ); } } var _inst2 = create(); refObject.current = _inst2; return function() { refObject.current = null; }; } } function mountImperativeHandle(ref, create, deps) { { if (typeof create !== "function") { error( "Expected useImperativeHandle() second argument to be a function " + "that creates a handle. Instead received: %s.", create !== null ? typeof create : "null" ); } } // TODO: If deps are provided, should we skip comparing the ref itself? var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; var fiberFlags = Update; return mountEffectImpl( fiberFlags, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps ); } function updateImperativeHandle(ref, create, deps) { { if (typeof create !== "function") { error( "Expected useImperativeHandle() second argument to be a function " + "that creates a handle. Instead received: %s.", create !== null ? typeof create : "null" ); } } // TODO: If deps are provided, should we skip comparing the ref itself? var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; return updateEffectImpl( Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps ); } function mountDebugValue(value, formatterFn) { // This hook is normally a no-op. // The react-debug-hooks package injects its own implementation // so that e.g. DevTools can display custom hook values. } var updateDebugValue = mountDebugValue; function mountCallback(callback, deps) { var hook = mountWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; hook.memoizedState = [callback, nextDeps]; return callback; } function updateCallback(callback, deps) { var hook = updateWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; var prevState = hook.memoizedState; if (prevState !== null) { if (nextDeps !== null) { var prevDeps = prevState[1]; if (areHookInputsEqual(nextDeps, prevDeps)) { return prevState[0]; } } } hook.memoizedState = [callback, nextDeps]; return callback; } function mountMemo(nextCreate, deps) { var hook = mountWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; var nextValue = nextCreate(); hook.memoizedState = [nextValue, nextDeps]; return nextValue; } function updateMemo(nextCreate, deps) { var hook = updateWorkInProgressHook(); var nextDeps = deps === undefined ? null : deps; var prevState = hook.memoizedState; if (prevState !== null) { // Assume these are defined. If they're not, areHookInputsEqual will warn. if (nextDeps !== null) { var prevDeps = prevState[1]; if (areHookInputsEqual(nextDeps, prevDeps)) { return prevState[0]; } } } var nextValue = nextCreate(); hook.memoizedState = [nextValue, nextDeps]; return nextValue; } function mountDeferredValue(value) { var hook = mountWorkInProgressHook(); hook.memoizedState = value; return value; } function updateDeferredValue(value) { var hook = updateWorkInProgressHook(); var resolvedCurrentHook = currentHook; var prevValue = resolvedCurrentHook.memoizedState; return updateDeferredValueImpl(hook, prevValue, value); } function rerenderDeferredValue(value) { var hook = updateWorkInProgressHook(); if (currentHook === null) { // This is a rerender during a mount. hook.memoizedState = value; return value; } else { // This is a rerender during an update. var prevValue = currentHook.memoizedState; return updateDeferredValueImpl(hook, prevValue, value); } } function updateDeferredValueImpl(hook, prevValue, value) { var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); if (shouldDeferValue) { // This is an urgent update. If the value has changed, keep using the // previous value and spawn a deferred render to update it later. if (!objectIs(value, prevValue)) { // Schedule a deferred render var deferredLane = claimNextTransitionLane(); currentlyRenderingFiber$1.lanes = mergeLanes( currentlyRenderingFiber$1.lanes, deferredLane ); markSkippedUpdateLanes(deferredLane); // Set this to true to indicate that the rendered value is inconsistent // from the latest value. The name "baseState" doesn't really match how we // use it because we're reusing a state hook field instead of creating a // new one. hook.baseState = true; } // Reuse the previous value return prevValue; } else { // This is not an urgent update, so we can use the latest value regardless // of what it is. No need to defer it. // However, if we're currently inside a spawned render, then we need to mark // this as an update to prevent the fiber from bailing out. // // `baseState` is true when the current value is different from the rendered // value. The name doesn't really match how we use it because we're reusing // a state hook field instead of creating a new one. if (hook.baseState) { // Flip this back to false. hook.baseState = false; markWorkInProgressReceivedUpdate(); } hook.memoizedState = value; return value; } } function startTransition(setPending, callback, options) { var previousPriority = getCurrentUpdatePriority(); setCurrentUpdatePriority( higherEventPriority(previousPriority, ContinuousEventPriority) ); setPending(true); var prevTransition = ReactCurrentBatchConfig$1.transition; ReactCurrentBatchConfig$1.transition = {}; var currentTransition = ReactCurrentBatchConfig$1.transition; { ReactCurrentBatchConfig$1.transition._updatedFibers = new Set(); } try { setPending(false); callback(); } finally { setCurrentUpdatePriority(previousPriority); ReactCurrentBatchConfig$1.transition = prevTransition; { if (prevTransition === null && currentTransition._updatedFibers) { var updatedFibersCount = currentTransition._updatedFibers.size; if (updatedFibersCount > 10) { warn( "Detected a large number of updates inside startTransition. " + "If this is due to a subscription please re-write it to use React provided hooks. " + "Otherwise concurrent mode guarantees are off the table." ); } currentTransition._updatedFibers.clear(); } } } } function mountTransition() { var _mountState = mountState(false), isPending = _mountState[0], setPending = _mountState[1]; // The `start` method never changes. var start = startTransition.bind(null, setPending); var hook = mountWorkInProgressHook(); hook.memoizedState = start; return [isPending, start]; } function updateTransition() { var _updateState = updateState(), isPending = _updateState[0]; var hook = updateWorkInProgressHook(); var start = hook.memoizedState; return [isPending, start]; } function rerenderTransition() { var _rerenderState = rerenderState(), isPending = _rerenderState[0]; var hook = updateWorkInProgressHook(); var start = hook.memoizedState; return [isPending, start]; } var isUpdatingOpaqueValueInRenderPhase = false; function getIsUpdatingOpaqueValueInRenderPhaseInDEV() { { return isUpdatingOpaqueValueInRenderPhase; } } function mountId() { var hook = mountWorkInProgressHook(); var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we // should do this in Fiber, too? Deferring this decision for now because // there's no other place to store the prefix except for an internal field on // the public createRoot object, which the fiber tree does not currently have // a reference to. var identifierPrefix = root.identifierPrefix; var id; { // Use a lowercase r prefix for client-generated ids. var globalClientId = globalClientIdCounter++; id = ":" + identifierPrefix + "r" + globalClientId.toString(32) + ":"; } hook.memoizedState = id; return id; } function updateId() { var hook = updateWorkInProgressHook(); var id = hook.memoizedState; return id; } function dispatchReducerAction(fiber, queue, action) { { if (typeof arguments[3] === "function") { error( "State updates from the useState() and useReducer() Hooks don't support the " + "second callback argument. To execute a side effect after " + "rendering, declare it in the component body with useEffect()." ); } } var lane = requestUpdateLane(fiber); var update = { lane: lane, action: action, hasEagerState: false, eagerState: null, next: null }; if (isRenderPhaseUpdate(fiber)) { enqueueRenderPhaseUpdate(queue, update); } else { var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); if (root !== null) { var eventTime = requestEventTime(); scheduleUpdateOnFiber(root, fiber, lane, eventTime); entangleTransitionUpdate(root, queue, lane); } } } function dispatchSetState(fiber, queue, action) { { if (typeof arguments[3] === "function") { error( "State updates from the useState() and useReducer() Hooks don't support the " + "second callback argument. To execute a side effect after " + "rendering, declare it in the component body with useEffect()." ); } } var lane = requestUpdateLane(fiber); var update = { lane: lane, action: action, hasEagerState: false, eagerState: null, next: null }; if (isRenderPhaseUpdate(fiber)) { enqueueRenderPhaseUpdate(queue, update); } else { var alternate = fiber.alternate; if ( fiber.lanes === NoLanes && (alternate === null || alternate.lanes === NoLanes) ) { // The queue is currently empty, which means we can eagerly compute the // next state before entering the render phase. If the new state is the // same as the current state, we may be able to bail out entirely. var lastRenderedReducer = queue.lastRenderedReducer; if (lastRenderedReducer !== null) { var prevDispatcher; { prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; } try { var currentState = queue.lastRenderedState; var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute // it, on the update object. If the reducer hasn't changed by the // time we enter the render phase, then the eager state can be used // without calling the reducer again. update.hasEagerState = true; update.eagerState = eagerState; if (objectIs(eagerState, currentState)) { // Fast path. We can bail out without scheduling React to re-render. // It's still possible that we'll need to rebase this update later, // if the component re-renders for a different reason and by that // time the reducer has changed. // TODO: Do we still need to entangle transitions in this case? enqueueConcurrentHookUpdateAndEagerlyBailout( fiber, queue, update, lane ); return; } } catch (error) { // Suppress the error. It will throw again in the render phase. } finally { { ReactCurrentDispatcher$1.current = prevDispatcher; } } } } var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); if (root !== null) { var eventTime = requestEventTime(); scheduleUpdateOnFiber(root, fiber, lane, eventTime); entangleTransitionUpdate(root, queue, lane); } } } function isRenderPhaseUpdate(fiber) { var alternate = fiber.alternate; return ( fiber === currentlyRenderingFiber$1 || (alternate !== null && alternate === currentlyRenderingFiber$1) ); } function enqueueRenderPhaseUpdate(queue, update) { // This is a render phase update. Stash it in a lazily-created map of // queue -> linked list of updates. After this render pass, we'll restart // and apply the stashed updates on top of the work-in-progress hook. didScheduleRenderPhaseUpdateDuringThisPass = didScheduleRenderPhaseUpdate = true; var pending = queue.pending; if (pending === null) { // This is the first update. Create a circular list. update.next = update; } else { update.next = pending.next; pending.next = update; } queue.pending = update; } // TODO: Move to ReactFiberConcurrentUpdates? function entangleTransitionUpdate(root, queue, lane) { if (isTransitionLane(lane)) { var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they // must have finished. We can remove them from the shared queue, which // represents a superset of the actually pending lanes. In some cases we // may entangle more than we need to, but that's OK. In fact it's worse if // we *don't* entangle when we should. queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. var newQueueLanes = mergeLanes(queueLanes, lane); queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if // the lane finished since the last time we entangled it. So we need to // entangle it again, just to be sure. markRootEntangled(root, newQueueLanes); } } var ContextOnlyDispatcher = { readContext: readContext, useCallback: throwInvalidHookError, useContext: throwInvalidHookError, useEffect: throwInvalidHookError, useImperativeHandle: throwInvalidHookError, useInsertionEffect: throwInvalidHookError, useLayoutEffect: throwInvalidHookError, useMemo: throwInvalidHookError, useReducer: throwInvalidHookError, useRef: throwInvalidHookError, useState: throwInvalidHookError, useDebugValue: throwInvalidHookError, useDeferredValue: throwInvalidHookError, useTransition: throwInvalidHookError, useMutableSource: throwInvalidHookError, useSyncExternalStore: throwInvalidHookError, useId: throwInvalidHookError, unstable_isNewReconciler: enableNewReconciler }; var HooksDispatcherOnMountInDEV = null; var HooksDispatcherOnMountWithHookTypesInDEV = null; var HooksDispatcherOnUpdateInDEV = null; var HooksDispatcherOnRerenderInDEV = null; var InvalidNestedHooksDispatcherOnMountInDEV = null; var InvalidNestedHooksDispatcherOnUpdateInDEV = null; var InvalidNestedHooksDispatcherOnRerenderInDEV = null; { var warnInvalidContextAccess = function() { error( "Context can only be read while React is rendering. " + "In classes, you can read it in the render method or getDerivedStateFromProps. " + "In function components, you can read it directly in the function body, but not " + "inside Hooks like useReducer() or useMemo()." ); }; var warnInvalidHookAccess = function() { error( "Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. " + "You can only call Hooks at the top level of your React function. " + "For more information, see " + "https://reactjs.org/link/rules-of-hooks" ); }; HooksDispatcherOnMountInDEV = { readContext: function(context) { return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; mountHookTypesDev(); checkDepsAreArrayDev(deps); return mountCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; mountHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; mountHookTypesDev(); checkDepsAreArrayDev(deps); return mountEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; mountHookTypesDev(); checkDepsAreArrayDev(deps); return mountImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; mountHookTypesDev(); checkDepsAreArrayDev(deps); return mountInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; mountHookTypesDev(); checkDepsAreArrayDev(deps); return mountLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; mountHookTypesDev(); checkDepsAreArrayDev(deps); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; mountHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; mountHookTypesDev(); return mountRef(initialValue); }, useState: function(initialState) { currentHookNameInDev = "useState"; mountHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; mountHookTypesDev(); return mountDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; mountHookTypesDev(); return mountDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; mountHookTypesDev(); return mountTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; mountHookTypesDev(); return mountMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; mountHookTypesDev(); return mountSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; mountHookTypesDev(); return mountId(); }, unstable_isNewReconciler: enableNewReconciler }; HooksDispatcherOnMountWithHookTypesInDEV = { readContext: function(context) { return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; updateHookTypesDev(); return mountCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; updateHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; updateHookTypesDev(); return mountEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; updateHookTypesDev(); return mountImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; updateHookTypesDev(); return mountInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; updateHookTypesDev(); return mountLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; updateHookTypesDev(); return mountRef(initialValue); }, useState: function(initialState) { currentHookNameInDev = "useState"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; updateHookTypesDev(); return mountDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; updateHookTypesDev(); return mountDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; updateHookTypesDev(); return mountTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; updateHookTypesDev(); return mountMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; updateHookTypesDev(); return mountSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; updateHookTypesDev(); return mountId(); }, unstable_isNewReconciler: enableNewReconciler }; HooksDispatcherOnUpdateInDEV = { readContext: function(context) { return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; updateHookTypesDev(); return updateCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; updateHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; updateHookTypesDev(); return updateEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; updateHookTypesDev(); return updateImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; updateHookTypesDev(); return updateInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; updateHookTypesDev(); return updateLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; updateHookTypesDev(); return updateRef(); }, useState: function(initialState) { currentHookNameInDev = "useState"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; updateHookTypesDev(); return updateDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; updateHookTypesDev(); return updateDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; updateHookTypesDev(); return updateTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; updateHookTypesDev(); return updateMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; updateHookTypesDev(); return updateSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; updateHookTypesDev(); return updateId(); }, unstable_isNewReconciler: enableNewReconciler }; HooksDispatcherOnRerenderInDEV = { readContext: function(context) { return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; updateHookTypesDev(); return updateCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; updateHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; updateHookTypesDev(); return updateEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; updateHookTypesDev(); return updateImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; updateHookTypesDev(); return updateInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; updateHookTypesDev(); return updateLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnRerenderInDEV; try { return updateMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnRerenderInDEV; try { return rerenderReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; updateHookTypesDev(); return updateRef(); }, useState: function(initialState) { currentHookNameInDev = "useState"; updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnRerenderInDEV; try { return rerenderState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; updateHookTypesDev(); return updateDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; updateHookTypesDev(); return rerenderDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; updateHookTypesDev(); return rerenderTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; updateHookTypesDev(); return updateMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; updateHookTypesDev(); return updateSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; updateHookTypesDev(); return updateId(); }, unstable_isNewReconciler: enableNewReconciler }; InvalidNestedHooksDispatcherOnMountInDEV = { readContext: function(context) { warnInvalidContextAccess(); return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; warnInvalidHookAccess(); mountHookTypesDev(); return mountCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; warnInvalidHookAccess(); mountHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; warnInvalidHookAccess(); mountHookTypesDev(); return mountEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; warnInvalidHookAccess(); mountHookTypesDev(); return mountImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; warnInvalidHookAccess(); mountHookTypesDev(); return mountInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; warnInvalidHookAccess(); mountHookTypesDev(); return mountLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; warnInvalidHookAccess(); mountHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; warnInvalidHookAccess(); mountHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; warnInvalidHookAccess(); mountHookTypesDev(); return mountRef(initialValue); }, useState: function(initialState) { currentHookNameInDev = "useState"; warnInvalidHookAccess(); mountHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnMountInDEV; try { return mountState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; warnInvalidHookAccess(); mountHookTypesDev(); return mountDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; warnInvalidHookAccess(); mountHookTypesDev(); return mountDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; warnInvalidHookAccess(); mountHookTypesDev(); return mountTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; warnInvalidHookAccess(); mountHookTypesDev(); return mountMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; warnInvalidHookAccess(); mountHookTypesDev(); return mountSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; warnInvalidHookAccess(); mountHookTypesDev(); return mountId(); }, unstable_isNewReconciler: enableNewReconciler }; InvalidNestedHooksDispatcherOnUpdateInDEV = { readContext: function(context) { warnInvalidContextAccess(); return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; warnInvalidHookAccess(); updateHookTypesDev(); return updateCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; warnInvalidHookAccess(); updateHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; warnInvalidHookAccess(); updateHookTypesDev(); return updateImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; warnInvalidHookAccess(); updateHookTypesDev(); return updateRef(); }, useState: function(initialState) { currentHookNameInDev = "useState"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; warnInvalidHookAccess(); updateHookTypesDev(); return updateDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; warnInvalidHookAccess(); updateHookTypesDev(); return updateDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; warnInvalidHookAccess(); updateHookTypesDev(); return updateTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; warnInvalidHookAccess(); updateHookTypesDev(); return updateMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; warnInvalidHookAccess(); updateHookTypesDev(); return updateSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; warnInvalidHookAccess(); updateHookTypesDev(); return updateId(); }, unstable_isNewReconciler: enableNewReconciler }; InvalidNestedHooksDispatcherOnRerenderInDEV = { readContext: function(context) { warnInvalidContextAccess(); return readContext(context); }, useCallback: function(callback, deps) { currentHookNameInDev = "useCallback"; warnInvalidHookAccess(); updateHookTypesDev(); return updateCallback(callback, deps); }, useContext: function(context) { currentHookNameInDev = "useContext"; warnInvalidHookAccess(); updateHookTypesDev(); return readContext(context); }, useEffect: function(create, deps) { currentHookNameInDev = "useEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateEffect(create, deps); }, useImperativeHandle: function(ref, create, deps) { currentHookNameInDev = "useImperativeHandle"; warnInvalidHookAccess(); updateHookTypesDev(); return updateImperativeHandle(ref, create, deps); }, useInsertionEffect: function(create, deps) { currentHookNameInDev = "useInsertionEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateInsertionEffect(create, deps); }, useLayoutEffect: function(create, deps) { currentHookNameInDev = "useLayoutEffect"; warnInvalidHookAccess(); updateHookTypesDev(); return updateLayoutEffect(create, deps); }, useMemo: function(create, deps) { currentHookNameInDev = "useMemo"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return updateMemo(create, deps); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useReducer: function(reducer, initialArg, init) { currentHookNameInDev = "useReducer"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return rerenderReducer(reducer, initialArg, init); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useRef: function(initialValue) { currentHookNameInDev = "useRef"; warnInvalidHookAccess(); updateHookTypesDev(); return updateRef(); }, useState: function(initialState) { currentHookNameInDev = "useState"; warnInvalidHookAccess(); updateHookTypesDev(); var prevDispatcher = ReactCurrentDispatcher$1.current; ReactCurrentDispatcher$1.current = InvalidNestedHooksDispatcherOnUpdateInDEV; try { return rerenderState(initialState); } finally { ReactCurrentDispatcher$1.current = prevDispatcher; } }, useDebugValue: function(value, formatterFn) { currentHookNameInDev = "useDebugValue"; warnInvalidHookAccess(); updateHookTypesDev(); return updateDebugValue(); }, useDeferredValue: function(value) { currentHookNameInDev = "useDeferredValue"; warnInvalidHookAccess(); updateHookTypesDev(); return rerenderDeferredValue(value); }, useTransition: function() { currentHookNameInDev = "useTransition"; warnInvalidHookAccess(); updateHookTypesDev(); return rerenderTransition(); }, useMutableSource: function(source, getSnapshot, subscribe) { currentHookNameInDev = "useMutableSource"; warnInvalidHookAccess(); updateHookTypesDev(); return updateMutableSource(); }, useSyncExternalStore: function(subscribe, getSnapshot, getServerSnapshot) { currentHookNameInDev = "useSyncExternalStore"; warnInvalidHookAccess(); updateHookTypesDev(); return updateSyncExternalStore(subscribe, getSnapshot); }, useId: function() { currentHookNameInDev = "useId"; warnInvalidHookAccess(); updateHookTypesDev(); return updateId(); }, unstable_isNewReconciler: enableNewReconciler }; } var now$1 = Scheduler.unstable_now; var commitTime = 0; var layoutEffectStartTime = -1; var profilerStartTime = -1; var passiveEffectStartTime = -1; /** * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). * * The overall sequence is: * 1. render * 2. commit (and call `onRender`, `onCommit`) * 3. check for nested updates * 4. flush passive effects (and call `onPostCommit`) * * Nested updates are identified in step 3 above, * but step 4 still applies to the work that was just committed. * We use two flags to track nested updates then: * one tracks whether the upcoming update is a nested update, * and the other tracks whether the current update was a nested update. * The first value gets synced to the second at the start of the render phase. */ var currentUpdateIsNested = false; var nestedUpdateScheduled = false; function isCurrentUpdateNested() { return currentUpdateIsNested; } function markNestedUpdateScheduled() { { nestedUpdateScheduled = true; } } function resetNestedUpdateFlag() { { currentUpdateIsNested = false; nestedUpdateScheduled = false; } } function syncNestedUpdateFlag() { { currentUpdateIsNested = nestedUpdateScheduled; nestedUpdateScheduled = false; } } function getCommitTime() { return commitTime; } function recordCommitTime() { commitTime = now$1(); } function startProfilerTimer(fiber) { profilerStartTime = now$1(); if (fiber.actualStartTime < 0) { fiber.actualStartTime = now$1(); } } function stopProfilerTimerIfRunning(fiber) { profilerStartTime = -1; } function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { if (profilerStartTime >= 0) { var elapsedTime = now$1() - profilerStartTime; fiber.actualDuration += elapsedTime; if (overrideBaseTime) { fiber.selfBaseDuration = elapsedTime; } profilerStartTime = -1; } } function recordLayoutEffectDuration(fiber) { if (layoutEffectStartTime >= 0) { var elapsedTime = now$1() - layoutEffectStartTime; layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor // Or the root (for the DevTools Profiler to read) var parentFiber = fiber.return; while (parentFiber !== null) { switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; root.effectDuration += elapsedTime; return; case Profiler: var parentStateNode = parentFiber.stateNode; parentStateNode.effectDuration += elapsedTime; return; } parentFiber = parentFiber.return; } } } function recordPassiveEffectDuration(fiber) { if (passiveEffectStartTime >= 0) { var elapsedTime = now$1() - passiveEffectStartTime; passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor // Or the root (for the DevTools Profiler to read) var parentFiber = fiber.return; while (parentFiber !== null) { switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; if (root !== null) { root.passiveEffectDuration += elapsedTime; } return; case Profiler: var parentStateNode = parentFiber.stateNode; if (parentStateNode !== null) { // Detached fibers have their state node cleared out. // In this case, the return pointer is also cleared out, // so we won't be able to report the time spent in this Profiler's subtree. parentStateNode.passiveEffectDuration += elapsedTime; } return; } parentFiber = parentFiber.return; } } } function startLayoutEffectTimer() { layoutEffectStartTime = now$1(); } function startPassiveEffectTimer() { passiveEffectStartTime = now$1(); } function transferActualDuration(fiber) { // Transfer time spent rendering these children so we don't lose it // after we rerender. This is used as a helper in special cases // where we should count the work of multiple passes. var child = fiber.child; while (child) { fiber.actualDuration += child.actualDuration; child = child.sibling; } } function createCapturedValueAtFiber(value, source) { // If the value is an error, call this function immediately after it is thrown // so the stack is accurate. return { value: value, source: source, stack: getStackByFiberInDevAndProd(source), digest: null }; } function createCapturedValue(value, digest, stack) { return { value: value, source: null, stack: stack != null ? stack : null, digest: digest != null ? digest : null }; } if ( typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog !== "function" ) { throw new Error( "Expected ReactFiberErrorDialog.showErrorDialog to be a function." ); } function showErrorDialog(boundary, errorInfo) { var capturedError = { componentStack: errorInfo.stack !== null ? errorInfo.stack : "", error: errorInfo.value, errorBoundary: boundary !== null && boundary.tag === ClassComponent ? boundary.stateNode : null }; return ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog( capturedError ); } function logCapturedError(boundary, errorInfo) { try { var logError = showErrorDialog(boundary, errorInfo); // Allow injected showErrorDialog() to prevent default console.error logging. // This enables renderers like ReactNative to better manage redbox behavior. if (logError === false) { return; } var error = errorInfo.value; if (true) { var source = errorInfo.source; var stack = errorInfo.stack; var componentStack = stack !== null ? stack : ""; // Browsers support silencing uncaught errors by calling // `preventDefault()` in window `error` handler. // We record this information as an expando on the error. if (error != null && error._suppressLogging) { if (boundary.tag === ClassComponent) { // The error is recoverable and was silenced. // Ignore it and don't print the stack addendum. // This is handy for testing error boundaries without noise. return; } // The error is fatal. Since the silencing might have // been accidental, we'll surface it anyway. // However, the browser would have silenced the original error // so we'll print it first, and then print the stack addendum. console["error"](error); // Don't transform to our wrapper // For a more detailed description of this block, see: // https://github.com/facebook/react/pull/13384 } var componentName = source ? getComponentNameFromFiber(source) : null; var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : "The above error occurred in one of your React components:"; var errorBoundaryMessage; if (boundary.tag === HostRoot) { errorBoundaryMessage = "Consider adding an error boundary to your tree to customize error handling behavior.\n" + "Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries."; } else { var errorBoundaryName = getComponentNameFromFiber(boundary) || "Anonymous"; errorBoundaryMessage = "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + errorBoundaryName + "."); } var combinedMessage = componentNameMessage + "\n" + componentStack + "\n\n" + ("" + errorBoundaryMessage); // In development, we provide our own message with just the component stack. // We don't include the original error message and JS stack because the browser // has already printed it. Even if the application swallows the error, it is still // displayed by the browser thanks to the DEV-only fake event trick in ReactErrorUtils. console["error"](combinedMessage); // Don't transform to our wrapper } else { // In production, we print the error directly. // This will include the message, the JS stack, and anything the browser wants to show. // We pass the error object instead of custom message so that the browser displays the error natively. console["error"](error); // Don't transform to our wrapper } } catch (e) { // This method must not throw, or React internal state will get messed up. // If console.error is overridden, or logCapturedError() shows a dialog that throws, // we want to report this error outside of the normal stack as a last resort. // https://github.com/facebook/react/issues/13188 setTimeout(function() { throw e; }); } } var PossiblyWeakMap$1 = typeof WeakMap === "function" ? WeakMap : Map; function createRootErrorUpdate(fiber, errorInfo, lane) { var update = createUpdate(NoTimestamp, lane); // Unmount the root by rendering null. update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property // being called "element". update.payload = { element: null }; var error = errorInfo.value; update.callback = function() { onUncaughtError(error); logCapturedError(fiber, errorInfo); }; return update; } function createClassErrorUpdate(fiber, errorInfo, lane) { var update = createUpdate(NoTimestamp, lane); update.tag = CaptureUpdate; var getDerivedStateFromError = fiber.type.getDerivedStateFromError; if (typeof getDerivedStateFromError === "function") { var error$1 = errorInfo.value; update.payload = function() { return getDerivedStateFromError(error$1); }; update.callback = function() { { markFailedErrorBoundaryForHotReloading(fiber); } logCapturedError(fiber, errorInfo); }; } var inst = fiber.stateNode; if (inst !== null && typeof inst.componentDidCatch === "function") { update.callback = function callback() { { markFailedErrorBoundaryForHotReloading(fiber); } logCapturedError(fiber, errorInfo); if (typeof getDerivedStateFromError !== "function") { // To preserve the preexisting retry behavior of error boundaries, // we keep track of which ones already failed during this batch. // This gets reset before we yield back to the browser. // TODO: Warn in strict mode if getDerivedStateFromError is // not defined. markLegacyErrorBoundaryAsFailed(this); } var error$1 = errorInfo.value; var stack = errorInfo.stack; this.componentDidCatch(error$1, { componentStack: stack !== null ? stack : "" }); { if (typeof getDerivedStateFromError !== "function") { // If componentDidCatch is the only error boundary method defined, // then it needs to call setState to recover from errors. // If no state update is scheduled then the boundary will swallow the error. if (!includesSomeLane(fiber.lanes, SyncLane)) { error( "%s: Error boundaries should implement getDerivedStateFromError(). " + "In that method, return a state update to display an error message or fallback UI.", getComponentNameFromFiber(fiber) || "Unknown" ); } } } }; } return update; } function attachPingListener(root, wakeable, lanes) { // Attach a ping listener // // The data might resolve before we have a chance to commit the fallback. Or, // in the case of a refresh, we'll never commit a fallback. So we need to // attach a listener now. When it resolves ("pings"), we can decide whether to // try rendering the tree again. // // Only attach a listener if one does not already exist for the lanes // we're currently rendering (which acts like a "thread ID" here). // // We only need to do this in concurrent mode. Legacy Suspense always // commits fallbacks synchronously, so there are no pings. var pingCache = root.pingCache; var threadIDs; if (pingCache === null) { pingCache = root.pingCache = new PossiblyWeakMap$1(); threadIDs = new Set(); pingCache.set(wakeable, threadIDs); } else { threadIDs = pingCache.get(wakeable); if (threadIDs === undefined) { threadIDs = new Set(); pingCache.set(wakeable, threadIDs); } } if (!threadIDs.has(lanes)) { // Memoize using the thread ID to prevent redundant listeners. threadIDs.add(lanes); var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); { if (isDevToolsPresent) { // If we have pending work still, restore the original updaters restorePendingUpdaters(root, lanes); } } wakeable.then(ping, ping); } } function attachRetryListener(suspenseBoundary, root, wakeable, lanes) { // Retry listener // // If the fallback does commit, we need to attach a different type of // listener. This one schedules an update on the Suspense boundary to turn // the fallback state off. // // Stash the wakeable on the boundary fiber so we can access it in the // commit phase. // // When the wakeable resolves, we'll attempt to render the boundary // again ("retry"). var wakeables = suspenseBoundary.updateQueue; if (wakeables === null) { var updateQueue = new Set(); updateQueue.add(wakeable); suspenseBoundary.updateQueue = updateQueue; } else { wakeables.add(wakeable); } } function resetSuspendedComponent(sourceFiber, rootRenderLanes) { // A legacy mode Suspense quirk, only relevant to hook components. var tag = sourceFiber.tag; if ( (sourceFiber.mode & ConcurrentMode) === NoMode && (tag === FunctionComponent || tag === ForwardRef || tag === SimpleMemoComponent) ) { var currentSource = sourceFiber.alternate; if (currentSource) { sourceFiber.updateQueue = currentSource.updateQueue; sourceFiber.memoizedState = currentSource.memoizedState; sourceFiber.lanes = currentSource.lanes; } else { sourceFiber.updateQueue = null; sourceFiber.memoizedState = null; } } } function getNearestSuspenseBoundaryToCapture(returnFiber) { var node = returnFiber; do { if (node.tag === SuspenseComponent && shouldCaptureSuspense(node)) { return node; } // This boundary already captured during this render. Continue to the next // boundary. node = node.return; } while (node !== null); return null; } function markSuspenseBoundaryShouldCapture( suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes ) { // This marks a Suspense boundary so that when we're unwinding the stack, // it captures the suspended "exception" and does a second (fallback) pass. if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { // Legacy Mode Suspense // // If the boundary is in legacy mode, we should *not* // suspend the commit. Pretend as if the suspended component rendered // null and keep rendering. When the Suspense boundary completes, // we'll do a second pass to render the fallback. if (suspenseBoundary === returnFiber) { // Special case where we suspended while reconciling the children of // a Suspense boundary's inner Offscreen wrapper fiber. This happens // when a React.lazy component is a direct child of a // Suspense boundary. // // Suspense boundaries are implemented as multiple fibers, but they // are a single conceptual unit. The legacy mode behavior where we // pretend the suspended fiber committed as `null` won't work, // because in this case the "suspended" fiber is the inner // Offscreen wrapper. // // Because the contents of the boundary haven't started rendering // yet (i.e. nothing in the tree has partially rendered) we can // switch to the regular, concurrent mode behavior: mark the // boundary with ShouldCapture and enter the unwind phase. suspenseBoundary.flags |= ShouldCapture; } else { suspenseBoundary.flags |= DidCapture; sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. // But we shouldn't call any lifecycle methods or callbacks. Remove // all lifecycle effect tags. sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); if (sourceFiber.tag === ClassComponent) { var currentSourceFiber = sourceFiber.alternate; if (currentSourceFiber === null) { // This is a new mount. Change the tag so it's not mistaken for a // completed class component. For example, we should not call // componentWillUnmount if it is deleted. sourceFiber.tag = IncompleteClassComponent; } else { // When we try rendering again, we should not reuse the current fiber, // since it's known to be in an inconsistent state. Use a force update to // prevent a bail out. var update = createUpdate(NoTimestamp, SyncLane); update.tag = ForceUpdate; enqueueUpdate(sourceFiber, update, SyncLane); } } // The source fiber did not complete. Mark it with Sync priority to // indicate that it still has pending work. sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); } return suspenseBoundary; } // Confirmed that the boundary is in a concurrent mode tree. Continue // with the normal suspend path. // // After this we'll use a set of heuristics to determine whether this // render pass will run to completion or restart or "suspend" the commit. // The actual logic for this is spread out in different places. // // This first principle is that if we're going to suspend when we complete // a root, then we should also restart if we get an update or ping that // might unsuspend it, and vice versa. The only reason to suspend is // because you think you might want to restart before committing. However, // it doesn't make sense to restart only while in the period we're suspended. // // Restarting too aggressively is also not good because it starves out any // intermediate loading state. So we use heuristics to determine when. // Suspense Heuristics // // If nothing threw a Promise or all the same fallbacks are already showing, // then don't suspend/restart. // // If this is an initial render of a new tree of Suspense boundaries and // those trigger a fallback, then don't suspend/restart. We want to ensure // that we can show the initial loading state as quickly as possible. // // If we hit a "Delayed" case, such as when we'd switch from content back into // a fallback, then we should always suspend/restart. Transitions apply // to this case. If none is defined, JND is used instead. // // If we're already showing a fallback and it gets "retried", allowing us to show // another level, but there's still an inner boundary that would show a fallback, // then we suspend/restart for 500ms since the last time we showed a fallback // anywhere in the tree. This effectively throttles progressive loading into a // consistent train of commits. This also gives us an opportunity to restart to // get to the completed state slightly earlier. // // If there's ambiguity due to batching it's resolved in preference of: // 1) "delayed", 2) "initial render", 3) "retry". // // We want to ensure that a "busy" state doesn't get force committed. We want to // ensure that new initial loading states can commit as soon as possible. suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in // the begin phase to prevent an early bailout. suspenseBoundary.lanes = rootRenderLanes; return suspenseBoundary; } function throwException( root, returnFiber, sourceFiber, value, rootRenderLanes ) { // The source fiber did not complete. sourceFiber.flags |= Incomplete; { if (isDevToolsPresent) { // If we have pending work still, restore the original updaters restorePendingUpdaters(root, rootRenderLanes); } } if ( value !== null && typeof value === "object" && typeof value.then === "function" ) { // This is a wakeable. The component suspended. var wakeable = value; resetSuspendedComponent(sourceFiber); var suspenseBoundary = getNearestSuspenseBoundaryToCapture(returnFiber); if (suspenseBoundary !== null) { suspenseBoundary.flags &= ~ForceClientRender; markSuspenseBoundaryShouldCapture( suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes ); // We only attach ping listeners in concurrent mode. Legacy Suspense always // commits fallbacks synchronously, so there are no pings. if (suspenseBoundary.mode & ConcurrentMode) { attachPingListener(root, wakeable, rootRenderLanes); } attachRetryListener(suspenseBoundary, root, wakeable); return; } else { // No boundary was found. Unless this is a sync update, this is OK. // We can suspend and wait for more data to arrive. if (!includesSyncLane(rootRenderLanes)) { // This is not a sync update. Suspend. Since we're not activating a // Suspense boundary, this will unwind all the way to the root without // performing a second pass to render a fallback. (This is arguably how // refresh transitions should work, too, since we're not going to commit // the fallbacks anyway.) // // This case also applies to initial hydration. attachPingListener(root, wakeable, rootRenderLanes); renderDidSuspendDelayIfPossible(); return; } // This is a sync/discrete update. We treat this case like an error // because discrete renders are expected to produce a complete tree // synchronously to maintain consistency with external state. var uncaughtSuspenseError = new Error( "A component suspended while responding to synchronous input. This " + "will cause the UI to be replaced with a loading indicator. To " + "fix, updates that suspend should be wrapped " + "with startTransition." ); // If we're outside a transition, fall through to the regular error path. // The error will be caught by the nearest suspense boundary. value = uncaughtSuspenseError; } } value = createCapturedValueAtFiber(value, sourceFiber); renderDidError(value); // We didn't find a boundary that could handle this type of exception. Start // over and traverse parent path again, this time treating the exception // as an error. var workInProgress = returnFiber; do { switch (workInProgress.tag) { case HostRoot: { var _errorInfo = value; workInProgress.flags |= ShouldCapture; var lane = pickArbitraryLane(rootRenderLanes); workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); var update = createRootErrorUpdate(workInProgress, _errorInfo, lane); enqueueCapturedUpdate(workInProgress, update); return; } case ClassComponent: // Capture and retry var errorInfo = value; var ctor = workInProgress.type; var instance = workInProgress.stateNode; if ( (workInProgress.flags & DidCapture) === NoFlags && (typeof ctor.getDerivedStateFromError === "function" || (instance !== null && typeof instance.componentDidCatch === "function" && !isAlreadyFailedLegacyErrorBoundary(instance))) ) { workInProgress.flags |= ShouldCapture; var _lane = pickArbitraryLane(rootRenderLanes); workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); // Schedule the error boundary to re-render using updated state var _update = createClassErrorUpdate( workInProgress, errorInfo, _lane ); enqueueCapturedUpdate(workInProgress, _update); return; } break; } workInProgress = workInProgress.return; } while (workInProgress !== null); } function getSuspendedCache() { { return null; } // This function is called when a Suspense boundary suspends. It returns the } var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner; var didReceiveUpdate = false; var didWarnAboutBadClass; var didWarnAboutModulePatternComponent; var didWarnAboutContextTypeOnFunctionComponent; var didWarnAboutGetDerivedStateOnFunctionComponent; var didWarnAboutFunctionRefs; var didWarnAboutReassigningProps; var didWarnAboutRevealOrder; var didWarnAboutTailOptions; { didWarnAboutBadClass = {}; didWarnAboutModulePatternComponent = {}; didWarnAboutContextTypeOnFunctionComponent = {}; didWarnAboutGetDerivedStateOnFunctionComponent = {}; didWarnAboutFunctionRefs = {}; didWarnAboutReassigningProps = false; didWarnAboutRevealOrder = {}; didWarnAboutTailOptions = {}; } function reconcileChildren(current, workInProgress, nextChildren, renderLanes) { if (current === null) { // If this is a fresh new component that hasn't been rendered yet, we // won't update its child set by applying minimal side-effects. Instead, // we will add them all to the child before it gets rendered. That means // we can optimize this reconciliation pass by not tracking side-effects. workInProgress.child = mountChildFibers( workInProgress, null, nextChildren, renderLanes ); } else { // If the current child is the same as the work in progress, it means that // we haven't yet started any work on these children. Therefore, we use // the clone algorithm to create a copy of all the current children. // If we had any progressed work already, that is invalid at this point so // let's throw it out. workInProgress.child = reconcileChildFibers( workInProgress, current.child, nextChildren, renderLanes ); } } function forceUnmountCurrentAndReconcile( current, workInProgress, nextChildren, renderLanes ) { // This function is fork of reconcileChildren. It's used in cases where we // want to reconcile without matching against the existing set. This has the // effect of all current children being unmounted; even if the type and key // are the same, the old child is unmounted and a new child is created. // // To do this, we're going to go through the reconcile algorithm twice. In // the first pass, we schedule a deletion for all the current children by // passing null. workInProgress.child = reconcileChildFibers( workInProgress, current.child, null, renderLanes ); // In the second pass, we mount the new children. The trick here is that we // pass null in place of where we usually pass the current child set. This has // the effect of remounting all children regardless of whether their // identities match. workInProgress.child = reconcileChildFibers( workInProgress, null, nextChildren, renderLanes ); } function updateForwardRef( current, workInProgress, Component, nextProps, renderLanes ) { // TODO: current can be non-null here even if the component // hasn't yet mounted. This happens after the first render suspends. // We'll need to figure out if this is fine or can cause issues. { if (workInProgress.type !== workInProgress.elementType) { // Lazy component props can't be validated in createElement // because they're only guaranteed to be resolved here. var innerPropTypes = Component.propTypes; if (innerPropTypes) { checkPropTypes( innerPropTypes, nextProps, // Resolved props "prop", getComponentNameFromType(Component) ); } } } var render = Component.render; var ref = workInProgress.ref; // The rest is a fork of updateFunctionComponent var nextChildren; prepareToReadContext(workInProgress, renderLanes); { ReactCurrentOwner$1.current = workInProgress; setIsRendering(true); nextChildren = renderWithHooks( current, workInProgress, render, nextProps, ref, renderLanes ); setIsRendering(false); } if (current !== null && !didReceiveUpdate) { bailoutHooks(current, workInProgress, renderLanes); return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } workInProgress.flags |= PerformedWork; reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function updateMemoComponent( current, workInProgress, Component, nextProps, renderLanes ) { if (current === null) { var type = Component.type; if ( isSimpleFunctionComponent(type) && Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either. Component.defaultProps === undefined ) { var resolvedType = type; { resolvedType = resolveFunctionForHotReloading(type); } // If this is a plain function component without default props, // and with only the default shallow comparison, we upgrade it // to a SimpleMemoComponent to allow fast path updates. workInProgress.tag = SimpleMemoComponent; workInProgress.type = resolvedType; { validateFunctionComponentInDev(workInProgress, type); } return updateSimpleMemoComponent( current, workInProgress, resolvedType, nextProps, renderLanes ); } { var innerPropTypes = type.propTypes; if (innerPropTypes) { // Inner memo component props aren't currently validated in createElement. // We could move it there, but we'd still need this for lazy code path. checkPropTypes( innerPropTypes, nextProps, // Resolved props "prop", getComponentNameFromType(type) ); } } var child = createFiberFromTypeAndProps( Component.type, null, nextProps, workInProgress, workInProgress.mode, renderLanes ); child.ref = workInProgress.ref; child.return = workInProgress; workInProgress.child = child; return child; } { var _type = Component.type; var _innerPropTypes = _type.propTypes; if (_innerPropTypes) { // Inner memo component props aren't currently validated in createElement. // We could move it there, but we'd still need this for lazy code path. checkPropTypes( _innerPropTypes, nextProps, // Resolved props "prop", getComponentNameFromType(_type) ); } } var currentChild = current.child; // This is always exactly one child var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( current, renderLanes ); if (!hasScheduledUpdateOrContext) { // This will be the props with resolved defaultProps, // unlike current.memoizedProps which will be the unresolved ones. var prevProps = currentChild.memoizedProps; // Default to shallow comparison var compare = Component.compare; compare = compare !== null ? compare : shallowEqual; if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) { return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } } // React DevTools reads this flag. workInProgress.flags |= PerformedWork; var newChild = createWorkInProgress(currentChild, nextProps); newChild.ref = workInProgress.ref; newChild.return = workInProgress; workInProgress.child = newChild; return newChild; } function updateSimpleMemoComponent( current, workInProgress, Component, nextProps, renderLanes ) { // TODO: current can be non-null here even if the component // hasn't yet mounted. This happens when the inner render suspends. // We'll need to figure out if this is fine or can cause issues. { if (workInProgress.type !== workInProgress.elementType) { // Lazy component props can't be validated in createElement // because they're only guaranteed to be resolved here. var outerMemoType = workInProgress.elementType; if (outerMemoType.$$typeof === REACT_LAZY_TYPE) { // We warn when you define propTypes on lazy() // so let's just skip over it to find memo() outer wrapper. // Inner props for memo are validated later. var lazyComponent = outerMemoType; var payload = lazyComponent._payload; var init = lazyComponent._init; try { outerMemoType = init(payload); } catch (x) { outerMemoType = null; } // Inner propTypes will be validated in the function component path. var outerPropTypes = outerMemoType && outerMemoType.propTypes; if (outerPropTypes) { checkPropTypes( outerPropTypes, nextProps, // Resolved (SimpleMemoComponent has no defaultProps) "prop", getComponentNameFromType(outerMemoType) ); } } } } if (current !== null) { var prevProps = current.memoizedProps; if ( shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && // Prevent bailout if the implementation changed due to hot reload. workInProgress.type === current.type ) { didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we // would during a normal fiber bailout. // // We don't have strong guarantees that the props object is referentially // equal during updates where we can't bail out anyway — like if the props // are shallowly equal, but there's a local state or context update in the // same batch. // // However, as a principle, we should aim to make the behavior consistent // across different ways of memoizing a component. For example, React.memo // has a different internal Fiber layout if you pass a normal function // component (SimpleMemoComponent) versus if you pass a different type // like forwardRef (MemoComponent). But this is an implementation detail. // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't // affect whether the props object is reused during a bailout. workInProgress.pendingProps = nextProps = prevProps; if (!checkScheduledUpdateOrContext(current, renderLanes)) { // The pending lanes were cleared at the beginning of beginWork. We're // about to bail out, but there might be other lanes that weren't // included in the current render. Usually, the priority level of the // remaining updates is accumulated during the evaluation of the // component (i.e. when processing the update queue). But since since // we're bailing out early *without* evaluating the component, we need // to account for it here, too. Reset to the value of the current fiber. // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, // because a MemoComponent fiber does not have hooks or an update queue; // rather, it wraps around an inner component, which may or may not // contains hooks. // TODO: Move the reset at in beginWork out of the common path so that // this is no longer necessary. workInProgress.lanes = current.lanes; return bailoutOnAlreadyFinishedWork( current, workInProgress, renderLanes ); } else if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags) { // This is a special case that only exists for legacy mode. // See https://github.com/facebook/react/pull/19216. didReceiveUpdate = true; } } } return updateFunctionComponent( current, workInProgress, Component, nextProps, renderLanes ); } function updateOffscreenComponent(current, workInProgress, renderLanes) { var nextProps = workInProgress.pendingProps; var nextChildren = nextProps.children; var prevState = current !== null ? current.memoizedState : null; if (nextProps.mode === "hidden" || enableLegacyHidden) { // Rendering a hidden tree. if ((workInProgress.mode & ConcurrentMode) === NoMode) { // In legacy sync mode, don't defer the subtree. Render it now. // TODO: Consider how Offscreen should work with transitions in the future var nextState = { baseLanes: NoLanes, cachePool: null, transitions: null }; workInProgress.memoizedState = nextState; pushRenderLanes(workInProgress, renderLanes); } else if (!includesSomeLane(renderLanes, OffscreenLane)) { var spawnedCachePool = null; // We're hidden, and we're not rendering at Offscreen. We will bail out // and resume this tree later. var nextBaseLanes; if (prevState !== null) { var prevBaseLanes = prevState.baseLanes; nextBaseLanes = mergeLanes(prevBaseLanes, renderLanes); } else { nextBaseLanes = renderLanes; } // Schedule this fiber to re-render at offscreen priority. Then bailout. workInProgress.lanes = workInProgress.childLanes = laneToLanes( OffscreenLane ); var _nextState = { baseLanes: nextBaseLanes, cachePool: spawnedCachePool, transitions: null }; workInProgress.memoizedState = _nextState; workInProgress.updateQueue = null; // to avoid a push/pop misalignment. pushRenderLanes(workInProgress, nextBaseLanes); return null; } else { // This is the second render. The surrounding visible content has already // committed. Now we resume rendering the hidden tree. // Rendering at offscreen, so we can clear the base lanes. var _nextState2 = { baseLanes: NoLanes, cachePool: null, transitions: null }; workInProgress.memoizedState = _nextState2; // Push the lanes that were skipped when we bailed out. var subtreeRenderLanes = prevState !== null ? prevState.baseLanes : renderLanes; pushRenderLanes(workInProgress, subtreeRenderLanes); } } else { // Rendering a visible tree. var _subtreeRenderLanes; if (prevState !== null) { // We're going from hidden -> visible. _subtreeRenderLanes = mergeLanes(prevState.baseLanes, renderLanes); workInProgress.memoizedState = null; } else { // We weren't previously hidden, and we still aren't, so there's nothing // special to do. Need to push to the stack regardless, though, to avoid // a push/pop misalignment. _subtreeRenderLanes = renderLanes; } pushRenderLanes(workInProgress, _subtreeRenderLanes); } reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } // Note: These happen to have identical begin phases, for now. We shouldn't hold function updateFragment(current, workInProgress, renderLanes) { var nextChildren = workInProgress.pendingProps; reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function updateMode(current, workInProgress, renderLanes) { var nextChildren = workInProgress.pendingProps.children; reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function updateProfiler(current, workInProgress, renderLanes) { { workInProgress.flags |= Update; { // Reset effect durations for the next eventual effect phase. // These are reset during render to allow the DevTools commit hook a chance to read them, var stateNode = workInProgress.stateNode; stateNode.effectDuration = 0; stateNode.passiveEffectDuration = 0; } } var nextProps = workInProgress.pendingProps; var nextChildren = nextProps.children; reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function markRef(current, workInProgress) { var ref = workInProgress.ref; if ( (current === null && ref !== null) || (current !== null && current.ref !== ref) ) { // Schedule a Ref effect workInProgress.flags |= Ref; } } function updateFunctionComponent( current, workInProgress, Component, nextProps, renderLanes ) { { if (workInProgress.type !== workInProgress.elementType) { // Lazy component props can't be validated in createElement // because they're only guaranteed to be resolved here. var innerPropTypes = Component.propTypes; if (innerPropTypes) { checkPropTypes( innerPropTypes, nextProps, // Resolved props "prop", getComponentNameFromType(Component) ); } } } var context; { var unmaskedContext = getUnmaskedContext(workInProgress, Component, true); context = getMaskedContext(workInProgress, unmaskedContext); } var nextChildren; prepareToReadContext(workInProgress, renderLanes); { ReactCurrentOwner$1.current = workInProgress; setIsRendering(true); nextChildren = renderWithHooks( current, workInProgress, Component, nextProps, context, renderLanes ); setIsRendering(false); } if (current !== null && !didReceiveUpdate) { bailoutHooks(current, workInProgress, renderLanes); return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } workInProgress.flags |= PerformedWork; reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function updateClassComponent( current, workInProgress, Component, nextProps, renderLanes ) { { // This is used by DevTools to force a boundary to error. switch (shouldError(workInProgress)) { case false: { var _instance = workInProgress.stateNode; var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. // Is there a better way to do this? var tempInstance = new ctor( workInProgress.memoizedProps, _instance.context ); var state = tempInstance.state; _instance.updater.enqueueSetState(_instance, state, null); break; } case true: { workInProgress.flags |= DidCapture; workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes var error$1 = new Error("Simulated error coming from DevTools"); var lane = pickArbitraryLane(renderLanes); workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state var update = createClassErrorUpdate( workInProgress, createCapturedValueAtFiber(error$1, workInProgress), lane ); enqueueCapturedUpdate(workInProgress, update); break; } } if (workInProgress.type !== workInProgress.elementType) { // Lazy component props can't be validated in createElement // because they're only guaranteed to be resolved here. var innerPropTypes = Component.propTypes; if (innerPropTypes) { checkPropTypes( innerPropTypes, nextProps, // Resolved props "prop", getComponentNameFromType(Component) ); } } } // Push context providers early to prevent context stack mismatches. // During mounting we don't know the child context yet as the instance doesn't exist. // We will invalidate the child context in finishClassComponent() right after rendering. var hasContext; if (isContextProvider(Component)) { hasContext = true; pushContextProvider(workInProgress); } else { hasContext = false; } prepareToReadContext(workInProgress, renderLanes); var instance = workInProgress.stateNode; var shouldUpdate; if (instance === null) { resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. constructClassInstance(workInProgress, Component, nextProps); mountClassInstance(workInProgress, Component, nextProps, renderLanes); shouldUpdate = true; } else if (current === null) { // In a resume, we'll already have an instance we can reuse. shouldUpdate = resumeMountClassInstance( workInProgress, Component, nextProps, renderLanes ); } else { shouldUpdate = updateClassInstance( current, workInProgress, Component, nextProps, renderLanes ); } var nextUnitOfWork = finishClassComponent( current, workInProgress, Component, shouldUpdate, hasContext, renderLanes ); { var inst = workInProgress.stateNode; if (shouldUpdate && inst.props !== nextProps) { if (!didWarnAboutReassigningProps) { error( "It looks like %s is reassigning its own `this.props` while rendering. " + "This is not supported and can lead to confusing bugs.", getComponentNameFromFiber(workInProgress) || "a component" ); } didWarnAboutReassigningProps = true; } } return nextUnitOfWork; } function finishClassComponent( current, workInProgress, Component, shouldUpdate, hasContext, renderLanes ) { // Refs should update even if shouldComponentUpdate returns false markRef(current, workInProgress); var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags; if (!shouldUpdate && !didCaptureError) { // Context providers should defer to sCU for rendering if (hasContext) { invalidateContextProvider(workInProgress, Component, false); } return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } var instance = workInProgress.stateNode; // Rerender ReactCurrentOwner$1.current = workInProgress; var nextChildren; if ( didCaptureError && typeof Component.getDerivedStateFromError !== "function" ) { // If we captured an error, but getDerivedStateFromError is not defined, // unmount all the children. componentDidCatch will schedule an update to // re-render a fallback. This is temporary until we migrate everyone to // the new API. // TODO: Warn in a future release. nextChildren = null; { stopProfilerTimerIfRunning(); } } else { { setIsRendering(true); nextChildren = instance.render(); setIsRendering(false); } } // React DevTools reads this flag. workInProgress.flags |= PerformedWork; if (current !== null && didCaptureError) { // If we're recovering from an error, reconcile without reusing any of // the existing children. Conceptually, the normal children and the children // that are shown on error are two different sets, so we shouldn't reuse // normal children even if their identities match. forceUnmountCurrentAndReconcile( current, workInProgress, nextChildren, renderLanes ); } else { reconcileChildren(current, workInProgress, nextChildren, renderLanes); } // Memoize state using the values we just used to render. // TODO: Restructure so we never read values from the instance. workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. if (hasContext) { invalidateContextProvider(workInProgress, Component, true); } return workInProgress.child; } function pushHostRootContext(workInProgress) { var root = workInProgress.stateNode; if (root.pendingContext) { pushTopLevelContextObject( workInProgress, root.pendingContext, root.pendingContext !== root.context ); } else if (root.context) { // Should always be set pushTopLevelContextObject(workInProgress, root.context, false); } pushHostContainer(workInProgress, root.containerInfo); } function updateHostRoot(current, workInProgress, renderLanes) { pushHostRootContext(workInProgress); if (current === null) { throw new Error("Should have a current fiber. This is a bug in React."); } var nextProps = workInProgress.pendingProps; var prevState = workInProgress.memoizedState; var prevChildren = prevState.element; cloneUpdateQueue(current, workInProgress); processUpdateQueue(workInProgress, nextProps, null, renderLanes); var nextState = workInProgress.memoizedState; var root = workInProgress.stateNode; // being called "element". var nextChildren = nextState.element; { if (nextChildren === prevChildren) { return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } reconcileChildren(current, workInProgress, nextChildren, renderLanes); } return workInProgress.child; } function updateHostComponent(current, workInProgress, renderLanes) { pushHostContext(workInProgress); var type = workInProgress.type; var nextProps = workInProgress.pendingProps; var prevProps = current !== null ? current.memoizedProps : null; var nextChildren = nextProps.children; if (prevProps !== null && shouldSetTextContent()) { // If we're switching from a direct text child to a normal child, or to // empty, we need to schedule the text content to be reset. workInProgress.flags |= ContentReset; } markRef(current, workInProgress); reconcileChildren(current, workInProgress, nextChildren, renderLanes); return workInProgress.child; } function updateHostText(current, workInProgress) { // immediately after. return null; } function mountLazyComponent( _current, workInProgress, elementType, renderLanes ) { resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); var props = workInProgress.pendingProps; var lazyComponent = elementType; var payload = lazyComponent._payload; var init = lazyComponent._init; var Component = init(payload); // Store the unwrapped component in the type. workInProgress.type = Component; var resolvedTag = (workInProgress.tag = resolveLazyComponentTag(Component)); var resolvedProps = resolveDefaultProps(Component, props); var child; switch (resolvedTag) { case FunctionComponent: { { validateFunctionComponentInDev(workInProgress, Component); workInProgress.type = Component = resolveFunctionForHotReloading( Component ); } child = updateFunctionComponent( null, workInProgress, Component, resolvedProps, renderLanes ); return child; } case ClassComponent: { { workInProgress.type = Component = resolveClassForHotReloading( Component ); } child = updateClassComponent( null, workInProgress, Component, resolvedProps, renderLanes ); return child; } case ForwardRef: { { workInProgress.type = Component = resolveForwardRefForHotReloading( Component ); } child = updateForwardRef( null, workInProgress, Component, resolvedProps, renderLanes ); return child; } case MemoComponent: { { if (workInProgress.type !== workInProgress.elementType) { var outerPropTypes = Component.propTypes; if (outerPropTypes) { checkPropTypes( outerPropTypes, resolvedProps, // Resolved for outer only "prop", getComponentNameFromType(Component) ); } } } child = updateMemoComponent( null, workInProgress, Component, resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too renderLanes ); return child; } } var hint = ""; { if ( Component !== null && typeof Component === "object" && Component.$$typeof === REACT_LAZY_TYPE ) { hint = " Did you wrap a component in React.lazy() more than once?"; } } // This message intentionally doesn't mention ForwardRef or MemoComponent // because the fact that it's a separate type of work is an // implementation detail. throw new Error( "Element type is invalid. Received a promise that resolves to: " + Component + ". " + ("Lazy element type must resolve to a class or function." + hint) ); } function mountIncompleteClassComponent( _current, workInProgress, Component, nextProps, renderLanes ) { resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` // Push context providers early to prevent context stack mismatches. // During mounting we don't know the child context yet as the instance doesn't exist. // We will invalidate the child context in finishClassComponent() right after rendering. var hasContext; if (isContextProvider(Component)) { hasContext = true; pushContextProvider(workInProgress); } else { hasContext = false; } prepareToReadContext(workInProgress, renderLanes); constructClassInstance(workInProgress, Component, nextProps); mountClassInstance(workInProgress, Component, nextProps, renderLanes); return finishClassComponent( null, workInProgress, Component, true, hasContext, renderLanes ); } function mountIndeterminateComponent( _current, workInProgress, Component, renderLanes ) { resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); var props = workInProgress.pendingProps; var context; { var unmaskedContext = getUnmaskedContext(workInProgress, Component, false); context = getMaskedContext(workInProgress, unmaskedContext); } prepareToReadContext(workInProgress, renderLanes); var value; { if ( Component.prototype && typeof Component.prototype.render === "function" ) { var componentName = getComponentNameFromType(Component) || "Unknown"; if (!didWarnAboutBadClass[componentName]) { error( "The <%s /> component appears to have a render method, but doesn't extend React.Component. " + "This is likely to cause errors. Change %s to extend React.Component instead.", componentName, componentName ); didWarnAboutBadClass[componentName] = true; } } if (workInProgress.mode & StrictLegacyMode) { ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null); } setIsRendering(true); ReactCurrentOwner$1.current = workInProgress; value = renderWithHooks( null, workInProgress, Component, props, context, renderLanes ); setIsRendering(false); } workInProgress.flags |= PerformedWork; { // Support for module components is deprecated and is removed behind a flag. // Whether or not it would crash later, we want to show a good message in DEV first. if ( typeof value === "object" && value !== null && typeof value.render === "function" && value.$$typeof === undefined ) { var _componentName = getComponentNameFromType(Component) || "Unknown"; if (!didWarnAboutModulePatternComponent[_componentName]) { error( "The <%s /> component appears to be a function component that returns a class instance. " + "Change %s to a class that extends React.Component instead. " + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + "cannot be called with `new` by React.", _componentName, _componentName, _componentName ); didWarnAboutModulePatternComponent[_componentName] = true; } } } if ( // Run these checks in production only if the flag is off. // Eventually we'll delete this branch altogether. typeof value === "object" && value !== null && typeof value.render === "function" && value.$$typeof === undefined ) { { var _componentName2 = getComponentNameFromType(Component) || "Unknown"; if (!didWarnAboutModulePatternComponent[_componentName2]) { error( "The <%s /> component appears to be a function component that returns a class instance. " + "Change %s to a class that extends React.Component instead. " + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + "cannot be called with `new` by React.", _componentName2, _componentName2, _componentName2 ); didWarnAboutModulePatternComponent[_componentName2] = true; } } // Proceed under the assumption that this is a class instance workInProgress.tag = ClassComponent; // Throw out any hooks that were used. workInProgress.memoizedState = null; workInProgress.updateQueue = null; // Push context providers early to prevent context stack mismatches. // During mounting we don't know the child context yet as the instance doesn't exist. // We will invalidate the child context in finishClassComponent() right after rendering. var hasContext = false; if (isContextProvider(Component)) { hasContext = true; pushContextProvider(workInProgress); } else { hasContext = false; } workInProgress.memoizedState = value.state !== null && value.state !== undefined ? value.state : null; initializeUpdateQueue(workInProgress); adoptClassInstance(workInProgress, value); mountClassInstance(workInProgress, Component, props, renderLanes); return finishClassComponent( null, workInProgress, Component, true, hasContext, renderLanes ); } else { // Proceed under the assumption that this is a function component workInProgress.tag = FunctionComponent; reconcileChildren(null, workInProgress, value, renderLanes); { validateFunctionComponentInDev(workInProgress, Component); } return workInProgress.child; } } function validateFunctionComponentInDev(workInProgress, Component) { { if (Component) { if (Component.childContextTypes) { error( "%s(...): childContextTypes cannot be defined on a function component.", Component.displayName || Component.name || "Component" ); } } if (workInProgress.ref !== null) { var info = ""; var ownerName = getCurrentFiberOwnerNameInDevOrNull(); if (ownerName) { info += "\n\nCheck the render method of `" + ownerName + "`."; } var warningKey = ownerName || ""; var debugSource = workInProgress._debugSource; if (debugSource) { warningKey = debugSource.fileName + ":" + debugSource.lineNumber; } if (!didWarnAboutFunctionRefs[warningKey]) { didWarnAboutFunctionRefs[warningKey] = true; error( "Function components cannot be given refs. " + "Attempts to access this ref will fail. " + "Did you mean to use React.forwardRef()?%s", info ); } } if (typeof Component.getDerivedStateFromProps === "function") { var _componentName3 = getComponentNameFromType(Component) || "Unknown"; if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName3]) { error( "%s: Function components do not support getDerivedStateFromProps.", _componentName3 ); didWarnAboutGetDerivedStateOnFunctionComponent[_componentName3] = true; } } if ( typeof Component.contextType === "object" && Component.contextType !== null ) { var _componentName4 = getComponentNameFromType(Component) || "Unknown"; if (!didWarnAboutContextTypeOnFunctionComponent[_componentName4]) { error( "%s: Function components do not support contextType.", _componentName4 ); didWarnAboutContextTypeOnFunctionComponent[_componentName4] = true; } } } } var SUSPENDED_MARKER = { dehydrated: null, treeContext: null, retryLane: NoLane }; function mountSuspenseOffscreenState(renderLanes) { return { baseLanes: renderLanes, cachePool: getSuspendedCache(), transitions: null }; } function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { var cachePool = null; return { baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), cachePool: cachePool, transitions: prevOffscreenState.transitions }; } // TODO: Probably should inline this back function shouldRemainOnFallback( suspenseContext, current, workInProgress, renderLanes ) { // If we're already showing a fallback, there are cases where we need to // remain on that fallback regardless of whether the content has resolved. // For example, SuspenseList coordinates when nested content appears. if (current !== null) { var suspenseState = current.memoizedState; if (suspenseState === null) { // Currently showing content. Don't hide it, even if ForceSuspenseFallback // is true. More precise name might be "ForceRemainSuspenseFallback". // Note: This is a factoring smell. Can't remain on a fallback if there's // no fallback to remain on. return false; } } // Not currently showing content. Consult the Suspense context. return hasSuspenseContext(suspenseContext, ForceSuspenseFallback); } function getRemainingWorkInPrimaryTree(current, renderLanes) { // TODO: Should not remove render lanes that were pinged during this render return removeLanes(current.childLanes, renderLanes); } function updateSuspenseComponent(current, workInProgress, renderLanes) { var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. { if (shouldSuspend(workInProgress)) { workInProgress.flags |= DidCapture; } } var suspenseContext = suspenseStackCursor.current; var showFallback = false; var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags; if (didSuspend || shouldRemainOnFallback(suspenseContext, current)) { // Something in this boundary's subtree already suspended. Switch to // rendering the fallback children. showFallback = true; workInProgress.flags &= ~DidCapture; } else { // Attempting the main content if (current === null || current.memoizedState !== null) { // This is a new mount or this boundary is already showing a fallback state. // Mark this subtree context as having at least one invisible parent that could // handle the fallback state. // Avoided boundaries are not considered since they cannot handle preferred fallback states. { suspenseContext = addSubtreeSuspenseContext( suspenseContext, InvisibleParentSuspenseContext ); } } } suspenseContext = setDefaultShallowSuspenseContext(suspenseContext); pushSuspenseContext(workInProgress, suspenseContext); // OK, the next part is confusing. We're about to reconcile the Suspense // boundary's children. This involves some custom reconciliation logic. Two // main reasons this is so complicated. // // First, Legacy Mode has different semantics for backwards compatibility. The // primary tree will commit in an inconsistent state, so when we do the // second pass to render the fallback, we do some exceedingly, uh, clever // hacks to make that not totally break. Like transferring effects and // deletions from hidden tree. In Concurrent Mode, it's much simpler, // because we bailout on the primary tree completely and leave it in its old // state, no effects. Same as what we do for Offscreen (except that // Offscreen doesn't have the first render pass). // // Second is hydration. During hydration, the Suspense fiber has a slightly // different layout, where the child points to a dehydrated fragment, which // contains the DOM rendered by the server. // // Third, even if you set all that aside, Suspense is like error boundaries in // that we first we try to render one tree, and if that fails, we render again // and switch to a different tree. Like a try/catch block. So we have to track // which branch we're currently rendering. Ideally we would model this using // a stack. if (current === null) { var suspenseState = workInProgress.memoizedState; if (suspenseState !== null) { var dehydrated = suspenseState.dehydrated; if (dehydrated !== null) { return mountDehydratedSuspenseComponent(workInProgress); } } var nextPrimaryChildren = nextProps.children; var nextFallbackChildren = nextProps.fallback; if (showFallback) { var fallbackFragment = mountSuspenseFallbackChildren( workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes ); var primaryChildFragment = workInProgress.child; primaryChildFragment.memoizedState = mountSuspenseOffscreenState( renderLanes ); workInProgress.memoizedState = SUSPENDED_MARKER; return fallbackFragment; } else { return mountSuspensePrimaryChildren(workInProgress, nextPrimaryChildren); } } else { // This is an update. // Special path for hydration var prevState = current.memoizedState; if (prevState !== null) { var _dehydrated = prevState.dehydrated; if (_dehydrated !== null) { return updateDehydratedSuspenseComponent( current, workInProgress, didSuspend, nextProps, _dehydrated, prevState, renderLanes ); } } if (showFallback) { var _nextFallbackChildren = nextProps.fallback; var _nextPrimaryChildren = nextProps.children; var fallbackChildFragment = updateSuspenseFallbackChildren( current, workInProgress, _nextPrimaryChildren, _nextFallbackChildren, renderLanes ); var _primaryChildFragment2 = workInProgress.child; var prevOffscreenState = current.child.memoizedState; _primaryChildFragment2.memoizedState = prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree( current, renderLanes ); workInProgress.memoizedState = SUSPENDED_MARKER; return fallbackChildFragment; } else { var _nextPrimaryChildren2 = nextProps.children; var _primaryChildFragment3 = updateSuspensePrimaryChildren( current, workInProgress, _nextPrimaryChildren2, renderLanes ); workInProgress.memoizedState = null; return _primaryChildFragment3; } } } function mountSuspensePrimaryChildren( workInProgress, primaryChildren, renderLanes ) { var mode = workInProgress.mode; var primaryChildProps = { mode: "visible", children: primaryChildren }; var primaryChildFragment = mountWorkInProgressOffscreenFiber( primaryChildProps, mode ); primaryChildFragment.return = workInProgress; workInProgress.child = primaryChildFragment; return primaryChildFragment; } function mountSuspenseFallbackChildren( workInProgress, primaryChildren, fallbackChildren, renderLanes ) { var mode = workInProgress.mode; var progressedPrimaryFragment = workInProgress.child; var primaryChildProps = { mode: "hidden", children: primaryChildren }; var primaryChildFragment; var fallbackChildFragment; if ( (mode & ConcurrentMode) === NoMode && progressedPrimaryFragment !== null ) { // In legacy mode, we commit the primary tree as if it successfully // completed, even though it's in an inconsistent state. primaryChildFragment = progressedPrimaryFragment; primaryChildFragment.childLanes = NoLanes; primaryChildFragment.pendingProps = primaryChildProps; if (workInProgress.mode & ProfileMode) { // Reset the durations from the first pass so they aren't included in the // final amounts. This seems counterintuitive, since we're intentionally // not measuring part of the render phase, but this makes it match what we // do in Concurrent Mode. primaryChildFragment.actualDuration = 0; primaryChildFragment.actualStartTime = -1; primaryChildFragment.selfBaseDuration = 0; primaryChildFragment.treeBaseDuration = 0; } fallbackChildFragment = createFiberFromFragment( fallbackChildren, mode, renderLanes, null ); } else { primaryChildFragment = mountWorkInProgressOffscreenFiber( primaryChildProps, mode ); fallbackChildFragment = createFiberFromFragment( fallbackChildren, mode, renderLanes, null ); } primaryChildFragment.return = workInProgress; fallbackChildFragment.return = workInProgress; primaryChildFragment.sibling = fallbackChildFragment; workInProgress.child = primaryChildFragment; return fallbackChildFragment; } function mountWorkInProgressOffscreenFiber(offscreenProps, mode, renderLanes) { // The props argument to `createFiberFromOffscreen` is `any` typed, so we use // this wrapper function to constrain it. return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); } function updateWorkInProgressOffscreenFiber(current, offscreenProps) { // The props argument to `createWorkInProgress` is `any` typed, so we use this // wrapper function to constrain it. return createWorkInProgress(current, offscreenProps); } function updateSuspensePrimaryChildren( current, workInProgress, primaryChildren, renderLanes ) { var currentPrimaryChildFragment = current.child; var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; var primaryChildFragment = updateWorkInProgressOffscreenFiber( currentPrimaryChildFragment, { mode: "visible", children: primaryChildren } ); if ((workInProgress.mode & ConcurrentMode) === NoMode) { primaryChildFragment.lanes = renderLanes; } primaryChildFragment.return = workInProgress; primaryChildFragment.sibling = null; if (currentFallbackChildFragment !== null) { // Delete the fallback child fragment var deletions = workInProgress.deletions; if (deletions === null) { workInProgress.deletions = [currentFallbackChildFragment]; workInProgress.flags |= ChildDeletion; } else { deletions.push(currentFallbackChildFragment); } } workInProgress.child = primaryChildFragment; return primaryChildFragment; } function updateSuspenseFallbackChildren( current, workInProgress, primaryChildren, fallbackChildren, renderLanes ) { var mode = workInProgress.mode; var currentPrimaryChildFragment = current.child; var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; var primaryChildProps = { mode: "hidden", children: primaryChildren }; var primaryChildFragment; if ( // In legacy mode, we commit the primary tree as if it successfully // completed, even though it's in an inconsistent state. (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was // already cloned. In legacy mode, the only case where this isn't true is // when DevTools forces us to display a fallback; we skip the first render // pass entirely and go straight to rendering the fallback. (In Concurrent // Mode, SuspenseList can also trigger this scenario, but this is a legacy- // only codepath.) workInProgress.child !== currentPrimaryChildFragment ) { var progressedPrimaryFragment = workInProgress.child; primaryChildFragment = progressedPrimaryFragment; primaryChildFragment.childLanes = NoLanes; primaryChildFragment.pendingProps = primaryChildProps; if (workInProgress.mode & ProfileMode) { // Reset the durations from the first pass so they aren't included in the // final amounts. This seems counterintuitive, since we're intentionally // not measuring part of the render phase, but this makes it match what we // do in Concurrent Mode. primaryChildFragment.actualDuration = 0; primaryChildFragment.actualStartTime = -1; primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration; primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration; } // The fallback fiber was added as a deletion during the first pass. // However, since we're going to remain on the fallback, we no longer want // to delete it. workInProgress.deletions = null; } else { primaryChildFragment = updateWorkInProgressOffscreenFiber( currentPrimaryChildFragment, primaryChildProps ); // Since we're reusing a current tree, we need to reuse the flags, too. // (We don't do this in legacy mode, because in legacy mode we don't re-use // the current tree; see previous branch.) primaryChildFragment.subtreeFlags = currentPrimaryChildFragment.subtreeFlags & StaticMask; } var fallbackChildFragment; if (currentFallbackChildFragment !== null) { fallbackChildFragment = createWorkInProgress( currentFallbackChildFragment, fallbackChildren ); } else { fallbackChildFragment = createFiberFromFragment( fallbackChildren, mode, renderLanes, null ); // Needs a placement effect because the parent (the Suspense boundary) already // mounted but this is a new fiber. fallbackChildFragment.flags |= Placement; } fallbackChildFragment.return = workInProgress; primaryChildFragment.return = workInProgress; primaryChildFragment.sibling = fallbackChildFragment; workInProgress.child = primaryChildFragment; return fallbackChildFragment; } function retrySuspenseComponentWithoutHydrating( current, workInProgress, renderLanes, recoverableError ) { // Falling back to client rendering. Because this has performance // implications, it's considered a recoverable error, even though the user // likely won't observe anything wrong with the UI. // // The error is passed in as an argument to enforce that every caller provide // a custom message, or explicitly opt out (currently the only path that opts // out is legacy mode; every concurrent path provides an error). if (recoverableError !== null) { queueHydrationError(recoverableError); } // This will add the old fiber to the deletion list reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. var nextProps = workInProgress.pendingProps; var primaryChildren = nextProps.children; var primaryChildFragment = mountSuspensePrimaryChildren( workInProgress, primaryChildren ); // Needs a placement effect because the parent (the Suspense boundary) already // mounted but this is a new fiber. primaryChildFragment.flags |= Placement; workInProgress.memoizedState = null; return primaryChildFragment; } function mountSuspenseFallbackAfterRetryWithoutHydrating( current, workInProgress, primaryChildren, fallbackChildren, renderLanes ) { var fiberMode = workInProgress.mode; var primaryChildProps = { mode: "visible", children: primaryChildren }; var primaryChildFragment = mountWorkInProgressOffscreenFiber( primaryChildProps, fiberMode ); var fallbackChildFragment = createFiberFromFragment( fallbackChildren, fiberMode, renderLanes, null ); // Needs a placement effect because the parent (the Suspense // boundary) already mounted but this is a new fiber. fallbackChildFragment.flags |= Placement; primaryChildFragment.return = workInProgress; fallbackChildFragment.return = workInProgress; primaryChildFragment.sibling = fallbackChildFragment; workInProgress.child = primaryChildFragment; if ((workInProgress.mode & ConcurrentMode) !== NoMode) { // We will have dropped the effect list which contains the // deletion. We need to reconcile to delete the current child. reconcileChildFibers(workInProgress, current.child, null, renderLanes); } return fallbackChildFragment; } function mountDehydratedSuspenseComponent( workInProgress, suspenseInstance, renderLanes ) { // During the first pass, we'll bail out and not drill into the children. // Instead, we'll leave the content in place and try to hydrate it later. if ((workInProgress.mode & ConcurrentMode) === NoMode) { { error( "Cannot hydrate Suspense in legacy mode. Switch from " + "ReactDOM.hydrate(element, container) to " + "ReactDOMClient.hydrateRoot(container, )" + ".render(element) or remove the Suspense components from " + "the server rendered components." ); } workInProgress.lanes = laneToLanes(SyncLane); } else if (isSuspenseInstanceFallback()) { // This is a client-only boundary. Since we won't get any content from the server // for this, we need to schedule that at a higher priority based on when it would // have timed out. In theory we could render it in this pass but it would have the // wrong priority associated with it and will prevent hydration of parent path. // Instead, we'll leave work left on it to render it in a separate commit. // TODO This time should be the time at which the server rendered response that is // a parent to this boundary was displayed. However, since we currently don't have // a protocol to transfer that time, we'll just estimate it by using the current // time. This will mean that Suspense timeouts are slightly shifted to later than // they should be. // Schedule a normal pri update to render this content. workInProgress.lanes = laneToLanes(DefaultHydrationLane); } else { // We'll continue hydrating the rest at offscreen priority since we'll already // be showing the right content coming from the server, it is no rush. workInProgress.lanes = laneToLanes(OffscreenLane); } return null; } function updateDehydratedSuspenseComponent( current, workInProgress, didSuspend, nextProps, suspenseInstance, suspenseState, renderLanes ) { if (!didSuspend) { if ((workInProgress.mode & ConcurrentMode) === NoMode) { return retrySuspenseComponentWithoutHydrating( current, workInProgress, renderLanes, // TODO: When we delete legacy mode, we should make this error argument // required — every concurrent mode path that causes hydration to // de-opt to client rendering should have an error message. null ); } if (isSuspenseInstanceFallback()) { // This boundary is in a permanent fallback state. In this case, we'll never // get an update and we'll never be able to hydrate the final content. Let's just try the // client side render instead. var digest, message, stack; { var _getSuspenseInstanceF = getSuspenseInstanceFallbackErrorDetails(); digest = _getSuspenseInstanceF.digest; message = _getSuspenseInstanceF.message; stack = _getSuspenseInstanceF.stack; } var error; if (message) { // eslint-disable-next-line react-internal/prod-error-codes error = new Error(message); } else { error = new Error( "The server could not finish this Suspense boundary, likely " + "due to an error during server rendering. Switched to " + "client rendering." ); } var capturedValue = createCapturedValue(error, digest, stack); return retrySuspenseComponentWithoutHydrating( current, workInProgress, renderLanes, capturedValue ); } // any context has changed, we need to treat is as if the input might have changed. var hasContextChanged = includesSomeLane(renderLanes, current.childLanes); if (didReceiveUpdate || hasContextChanged) { // This boundary has changed since the first render. This means that we are now unable to // hydrate it. We might still be able to hydrate it using a higher priority lane. var root = getWorkInProgressRoot(); if (root !== null) { var attemptHydrationAtLane = getBumpedLaneForHydration( root, renderLanes ); if ( attemptHydrationAtLane !== NoLane && attemptHydrationAtLane !== suspenseState.retryLane ) { // Intentionally mutating since this render will get interrupted. This // is one of the very rare times where we mutate the current tree // during the render phase. suspenseState.retryLane = attemptHydrationAtLane; // TODO: Ideally this would inherit the event time of the current render var eventTime = NoTimestamp; enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); scheduleUpdateOnFiber( root, current, attemptHydrationAtLane, eventTime ); } } // If we have scheduled higher pri work above, this will probably just abort the render // since we now have higher priority work, but in case it doesn't, we need to prepare to // render something, if we time out. Even if that requires us to delete everything and // skip hydration. // Delay having to do this as long as the suspense timeout allows us. renderDidSuspendDelayIfPossible(); var _capturedValue = createCapturedValue( new Error( "This Suspense boundary received an update before it finished " + "hydrating. This caused the boundary to switch to client rendering. " + "The usual way to fix this is to wrap the original update " + "in startTransition." ) ); return retrySuspenseComponentWithoutHydrating( current, workInProgress, renderLanes, _capturedValue ); } else if (isSuspenseInstancePending()) { // This component is still pending more data from the server, so we can't hydrate its // content. We treat it as if this component suspended itself. It might seem as if // we could just try to render it client-side instead. However, this will perform a // lot of unnecessary work and is unlikely to complete since it often will suspend // on missing data anyway. Additionally, the server might be able to render more // than we can on the client yet. In that case we'd end up with more fallback states // on the client than if we just leave it alone. If the server times out or errors // these should update this boundary to the permanent Fallback state instead. // Mark it as having captured (i.e. suspended). workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. var retry = retryDehydratedSuspenseBoundary.bind(null, current); registerSuspenseInstanceRetry(); return null; } else { // This is the first attempt. reenterHydrationStateFromDehydratedSuspenseInstance( workInProgress, suspenseInstance, suspenseState.treeContext ); var primaryChildren = nextProps.children; var primaryChildFragment = mountSuspensePrimaryChildren( workInProgress, primaryChildren ); // Mark the children as hydrating. This is a fast path to know whether this // tree is part of a hydrating tree. This is used to determine if a child // node has fully mounted yet, and for scheduling event replaying. // Conceptually this is similar to Placement in that a new subtree is // inserted into the React tree here. It just happens to not need DOM // mutations because it already exists. primaryChildFragment.flags |= Hydrating; return primaryChildFragment; } } else { // This is the second render pass. We already attempted to hydrated, but // something either suspended or errored. if (workInProgress.flags & ForceClientRender) { // Something errored during hydration. Try again without hydrating. workInProgress.flags &= ~ForceClientRender; var _capturedValue2 = createCapturedValue( new Error( "There was an error while hydrating this Suspense boundary. " + "Switched to client rendering." ) ); return retrySuspenseComponentWithoutHydrating( current, workInProgress, renderLanes, _capturedValue2 ); } else if (workInProgress.memoizedState !== null) { // Something suspended and we should still be in dehydrated mode. // Leave the existing child in place. workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there // but the normal suspense pass doesn't. workInProgress.flags |= DidCapture; return null; } else { // Suspended but we should no longer be in dehydrated mode. // Therefore we now have to render the fallback. var nextPrimaryChildren = nextProps.children; var nextFallbackChildren = nextProps.fallback; var fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating( current, workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes ); var _primaryChildFragment4 = workInProgress.child; _primaryChildFragment4.memoizedState = mountSuspenseOffscreenState( renderLanes ); workInProgress.memoizedState = SUSPENDED_MARKER; return fallbackChildFragment; } } } function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { fiber.lanes = mergeLanes(fiber.lanes, renderLanes); var alternate = fiber.alternate; if (alternate !== null) { alternate.lanes = mergeLanes(alternate.lanes, renderLanes); } scheduleContextWorkOnParentPath(fiber.return, renderLanes, propagationRoot); } function propagateSuspenseContextChange( workInProgress, firstChild, renderLanes ) { // Mark any Suspense boundaries with fallbacks as having work to do. // If they were previously forced into fallbacks, they may now be able // to unblock. var node = firstChild; while (node !== null) { if (node.tag === SuspenseComponent) { var state = node.memoizedState; if (state !== null) { scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); } } else if (node.tag === SuspenseListComponent) { // If the tail is hidden there might not be an Suspense boundaries // to schedule work on. In this case we have to schedule it on the // list itself. // We don't have to traverse to the children of the list since // the list will propagate the change when it rerenders. scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); } else if (node.child !== null) { node.child.return = node; node = node.child; continue; } if (node === workInProgress) { return; } while (node.sibling === null) { if (node.return === null || node.return === workInProgress) { return; } node = node.return; } node.sibling.return = node.return; node = node.sibling; } } function findLastContentRow(firstChild) { // This is going to find the last row among these children that is already // showing content on the screen, as opposed to being in fallback state or // new. If a row has multiple Suspense boundaries, any of them being in the // fallback state, counts as the whole row being in a fallback state. // Note that the "rows" will be workInProgress, but any nested children // will still be current since we haven't rendered them yet. The mounted // order may not be the same as the new order. We use the new order. var row = firstChild; var lastContentRow = null; while (row !== null) { var currentRow = row.alternate; // New rows can't be content rows. if (currentRow !== null && findFirstSuspended(currentRow) === null) { lastContentRow = row; } row = row.sibling; } return lastContentRow; } function validateRevealOrder(revealOrder) { { if ( revealOrder !== undefined && revealOrder !== "forwards" && revealOrder !== "backwards" && revealOrder !== "together" && !didWarnAboutRevealOrder[revealOrder] ) { didWarnAboutRevealOrder[revealOrder] = true; if (typeof revealOrder === "string") { switch (revealOrder.toLowerCase()) { case "together": case "forwards": case "backwards": { error( '"%s" is not a valid value for revealOrder on . ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase() ); break; } case "forward": case "backward": { error( '"%s" is not a valid value for revealOrder on . ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase() ); break; } default: error( '"%s" is not a supported revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder ); break; } } else { error( "%s is not a supported value for revealOrder on . " + 'Did you mean "together", "forwards" or "backwards"?', revealOrder ); } } } } function validateTailOptions(tailMode, revealOrder) { { if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { if (tailMode !== "collapsed" && tailMode !== "hidden") { didWarnAboutTailOptions[tailMode] = true; error( '"%s" is not a supported value for tail on . ' + 'Did you mean "collapsed" or "hidden"?', tailMode ); } else if (revealOrder !== "forwards" && revealOrder !== "backwards") { didWarnAboutTailOptions[tailMode] = true; error( ' is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode ); } } } } function validateSuspenseListNestedChild(childSlot, index) { { var isAnArray = isArray(childSlot); var isIterable = !isAnArray && typeof getIteratorFn(childSlot) === "function"; if (isAnArray || isIterable) { var type = isAnArray ? "array" : "iterable"; error( "A nested %s was passed to row #%s in . Wrap it in " + "an additional SuspenseList to configure its revealOrder: " + " ... " + "{%s} ... " + "", type, index, type ); return false; } } return true; } function validateSuspenseListChildren(children, revealOrder) { { if ( (revealOrder === "forwards" || revealOrder === "backwards") && children !== undefined && children !== null && children !== false ) { if (isArray(children)) { for (var i = 0; i < children.length; i++) { if (!validateSuspenseListNestedChild(children[i], i)) { return; } } } else { var iteratorFn = getIteratorFn(children); if (typeof iteratorFn === "function") { var childrenIterator = iteratorFn.call(children); if (childrenIterator) { var step = childrenIterator.next(); var _i = 0; for (; !step.done; step = childrenIterator.next()) { if (!validateSuspenseListNestedChild(step.value, _i)) { return; } _i++; } } } else { error( 'A single row was passed to a . ' + "This is not useful since it needs multiple rows. " + "Did you mean to pass multiple children or an array?", revealOrder ); } } } } } function initSuspenseListRenderState( workInProgress, isBackwards, tail, lastContentRow, tailMode ) { var renderState = workInProgress.memoizedState; if (renderState === null) { workInProgress.memoizedState = { isBackwards: isBackwards, rendering: null, renderingStartTime: 0, last: lastContentRow, tail: tail, tailMode: tailMode }; } else { // We can reuse the existing object from previous renders. renderState.isBackwards = isBackwards; renderState.rendering = null; renderState.renderingStartTime = 0; renderState.last = lastContentRow; renderState.tail = tail; renderState.tailMode = tailMode; } } // This can end up rendering this component multiple passes. // The first pass splits the children fibers into two sets. A head and tail. // We first render the head. If anything is in fallback state, we do another // pass through beginWork to rerender all children (including the tail) with // the force suspend context. If the first render didn't have anything in // in fallback state. Then we render each row in the tail one-by-one. // That happens in the completeWork phase without going back to beginWork. function updateSuspenseListComponent(current, workInProgress, renderLanes) { var nextProps = workInProgress.pendingProps; var revealOrder = nextProps.revealOrder; var tailMode = nextProps.tail; var newChildren = nextProps.children; validateRevealOrder(revealOrder); validateTailOptions(tailMode, revealOrder); validateSuspenseListChildren(newChildren, revealOrder); reconcileChildren(current, workInProgress, newChildren, renderLanes); var suspenseContext = suspenseStackCursor.current; var shouldForceFallback = hasSuspenseContext( suspenseContext, ForceSuspenseFallback ); if (shouldForceFallback) { suspenseContext = setShallowSuspenseContext( suspenseContext, ForceSuspenseFallback ); workInProgress.flags |= DidCapture; } else { var didSuspendBefore = current !== null && (current.flags & DidCapture) !== NoFlags; if (didSuspendBefore) { // If we previously forced a fallback, we need to schedule work // on any nested boundaries to let them know to try to render // again. This is the same as context updating. propagateSuspenseContextChange( workInProgress, workInProgress.child, renderLanes ); } suspenseContext = setDefaultShallowSuspenseContext(suspenseContext); } pushSuspenseContext(workInProgress, suspenseContext); if ((workInProgress.mode & ConcurrentMode) === NoMode) { // In legacy mode, SuspenseList doesn't work so we just // use make it a noop by treating it as the default revealOrder. workInProgress.memoizedState = null; } else { switch (revealOrder) { case "forwards": { var lastContentRow = findLastContentRow(workInProgress.child); var tail; if (lastContentRow === null) { // The whole list is part of the tail. // TODO: We could fast path by just rendering the tail now. tail = workInProgress.child; workInProgress.child = null; } else { // Disconnect the tail rows after the content row. // We're going to render them separately later. tail = lastContentRow.sibling; lastContentRow.sibling = null; } initSuspenseListRenderState( workInProgress, false, // isBackwards tail, lastContentRow, tailMode ); break; } case "backwards": { // We're going to find the first row that has existing content. // At the same time we're going to reverse the list of everything // we pass in the meantime. That's going to be our tail in reverse // order. var _tail = null; var row = workInProgress.child; workInProgress.child = null; while (row !== null) { var currentRow = row.alternate; // New rows can't be content rows. if (currentRow !== null && findFirstSuspended(currentRow) === null) { // This is the beginning of the main content. workInProgress.child = row; break; } var nextRow = row.sibling; row.sibling = _tail; _tail = row; row = nextRow; } // TODO: If workInProgress.child is null, we can continue on the tail immediately. initSuspenseListRenderState( workInProgress, true, // isBackwards _tail, null, // last tailMode ); break; } case "together": { initSuspenseListRenderState( workInProgress, false, // isBackwards null, // tail null, // last undefined ); break; } default: { // The default reveal order is the same as not having // a boundary. workInProgress.memoizedState = null; } } } return workInProgress.child; } function updatePortalComponent(current, workInProgress, renderLanes) { pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); var nextChildren = workInProgress.pendingProps; if (current === null) { // Portals are special because we don't append the children during mount // but at commit. Therefore we need to track insertions which the normal // flow doesn't do during mount. This doesn't happen at the root because // the root always starts with a "current" with a null child. // TODO: Consider unifying this with how the root works. workInProgress.child = reconcileChildFibers( workInProgress, null, nextChildren, renderLanes ); } else { reconcileChildren(current, workInProgress, nextChildren, renderLanes); } return workInProgress.child; } var hasWarnedAboutUsingNoValuePropOnContextProvider = false; function updateContextProvider(current, workInProgress, renderLanes) { var providerType = workInProgress.type; var context = providerType._context; var newProps = workInProgress.pendingProps; var oldProps = workInProgress.memoizedProps; var newValue = newProps.value; { if (!("value" in newProps)) { if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { hasWarnedAboutUsingNoValuePropOnContextProvider = true; error( "The `value` prop is required for the ``. Did you misspell it or forget to pass it?" ); } } var providerPropTypes = workInProgress.type.propTypes; if (providerPropTypes) { checkPropTypes(providerPropTypes, newProps, "prop", "Context.Provider"); } } pushProvider(workInProgress, context, newValue); { if (oldProps !== null) { var oldValue = oldProps.value; if (objectIs(oldValue, newValue)) { // No change. Bailout early if children are the same. if (oldProps.children === newProps.children && !hasContextChanged()) { return bailoutOnAlreadyFinishedWork( current, workInProgress, renderLanes ); } } else { // The context value changed. Search for matching consumers and schedule // them to update. propagateContextChange(workInProgress, context, renderLanes); } } } var newChildren = newProps.children; reconcileChildren(current, workInProgress, newChildren, renderLanes); return workInProgress.child; } var hasWarnedAboutUsingContextAsConsumer = false; function updateContextConsumer(current, workInProgress, renderLanes) { var context = workInProgress.type; // The logic below for Context differs depending on PROD or DEV mode. In // DEV mode, we create a separate object for Context.Consumer that acts // like a proxy to Context. This proxy object adds unnecessary code in PROD // so we use the old behaviour (Context.Consumer references Context) to // reduce size and overhead. The separate object references context via // a property called "_context", which also gives us the ability to check // in DEV mode if this property exists or not and warn if it does not. { if (context._context === undefined) { // This may be because it's a Context (rather than a Consumer). // Or it may be because it's older React where they're the same thing. // We only want to warn if we're sure it's a new React. if (context !== context.Consumer) { if (!hasWarnedAboutUsingContextAsConsumer) { hasWarnedAboutUsingContextAsConsumer = true; error( "Rendering directly is not supported and will be removed in " + "a future major release. Did you mean to render instead?" ); } } } else { context = context._context; } } var newProps = workInProgress.pendingProps; var render = newProps.children; { if (typeof render !== "function") { error( "A context consumer was rendered with multiple children, or a child " + "that isn't a function. A context consumer expects a single child " + "that is a function. If you did pass a function, make sure there " + "is no trailing or leading whitespace around it." ); } } prepareToReadContext(workInProgress, renderLanes); var newValue = readContext(context); var newChildren; { ReactCurrentOwner$1.current = workInProgress; setIsRendering(true); newChildren = render(newValue); setIsRendering(false); } workInProgress.flags |= PerformedWork; reconcileChildren(current, workInProgress, newChildren, renderLanes); return workInProgress.child; } function markWorkInProgressReceivedUpdate() { didReceiveUpdate = true; } function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { if ((workInProgress.mode & ConcurrentMode) === NoMode) { if (current !== null) { // A lazy component only mounts if it suspended inside a non- // concurrent tree, in an inconsistent state. We want to treat it like // a new mount, even though an empty version of it already committed. // Disconnect the alternate pointers. current.alternate = null; workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect workInProgress.flags |= Placement; } } } function bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes) { if (current !== null) { // Reuse previous dependencies workInProgress.dependencies = current.dependencies; } { // Don't update "base" render times for bailouts. stopProfilerTimerIfRunning(); } markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { // The children don't have any work either. We can skip them. // TODO: Once we add back resuming, we should check if the children are // a work-in-progress set. If so, we need to transfer their effects. { return null; } } // This fiber doesn't have work, but its subtree does. Clone the child // fibers and continue. cloneChildFibers(current, workInProgress); return workInProgress.child; } function remountFiber(current, oldWorkInProgress, newWorkInProgress) { { var returnFiber = oldWorkInProgress.return; if (returnFiber === null) { // eslint-disable-next-line react-internal/prod-error-codes throw new Error("Cannot swap the root fiber."); } // Disconnect from the old current. // It will get deleted. current.alternate = null; oldWorkInProgress.alternate = null; // Connect to the new tree. newWorkInProgress.index = oldWorkInProgress.index; newWorkInProgress.sibling = oldWorkInProgress.sibling; newWorkInProgress.return = oldWorkInProgress.return; newWorkInProgress.ref = oldWorkInProgress.ref; // Replace the child/sibling pointers above it. if (oldWorkInProgress === returnFiber.child) { returnFiber.child = newWorkInProgress; } else { var prevSibling = returnFiber.child; if (prevSibling === null) { // eslint-disable-next-line react-internal/prod-error-codes throw new Error("Expected parent to have a child."); } while (prevSibling.sibling !== oldWorkInProgress) { prevSibling = prevSibling.sibling; if (prevSibling === null) { // eslint-disable-next-line react-internal/prod-error-codes throw new Error("Expected to find the previous sibling."); } } prevSibling.sibling = newWorkInProgress; } // Delete the old fiber and place the new one. // Since the old fiber is disconnected, we have to schedule it manually. var deletions = returnFiber.deletions; if (deletions === null) { returnFiber.deletions = [current]; returnFiber.flags |= ChildDeletion; } else { deletions.push(current); } newWorkInProgress.flags |= Placement; // Restart work from the new fiber. return newWorkInProgress; } } function checkScheduledUpdateOrContext(current, renderLanes) { // Before performing an early bailout, we must check if there are pending // updates or context. var updateLanes = current.lanes; if (includesSomeLane(updateLanes, renderLanes)) { return true; } // No pending update, but because context is propagated lazily, we need return false; } function attemptEarlyBailoutIfNoScheduledUpdate( current, workInProgress, renderLanes ) { // This fiber does not have any pending work. Bailout without entering // the begin phase. There's still some bookkeeping we that needs to be done // in this optimized path, mostly pushing stuff onto the stack. switch (workInProgress.tag) { case HostRoot: pushHostRootContext(workInProgress); var root = workInProgress.stateNode; break; case HostComponent: pushHostContext(workInProgress); break; case ClassComponent: { var Component = workInProgress.type; if (isContextProvider(Component)) { pushContextProvider(workInProgress); } break; } case HostPortal: pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); break; case ContextProvider: { var newValue = workInProgress.memoizedProps.value; var context = workInProgress.type._context; pushProvider(workInProgress, context, newValue); break; } case Profiler: { // Profiler should only call onRender when one of its descendants actually rendered. var hasChildWork = includesSomeLane( renderLanes, workInProgress.childLanes ); if (hasChildWork) { workInProgress.flags |= Update; } { // Reset effect durations for the next eventual effect phase. // These are reset during render to allow the DevTools commit hook a chance to read them, var stateNode = workInProgress.stateNode; stateNode.effectDuration = 0; stateNode.passiveEffectDuration = 0; } } break; case SuspenseComponent: { var state = workInProgress.memoizedState; if (state !== null) { if (state.dehydrated !== null) { pushSuspenseContext( workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current) ); // We know that this component will suspend again because if it has // been unsuspended it has committed as a resolved Suspense component. // If it needs to be retried, it should have work scheduled on it. workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. return null; } // If this boundary is currently timed out, we need to decide // whether to retry the primary children, or to skip over it and // go straight to the fallback. Check the priority of the primary // child fragment. var primaryChildFragment = workInProgress.child; var primaryChildLanes = primaryChildFragment.childLanes; if (includesSomeLane(renderLanes, primaryChildLanes)) { // The primary children have pending work. Use the normal path // to attempt to render the primary children again. return updateSuspenseComponent(current, workInProgress, renderLanes); } else { // The primary child fragment does not have pending work marked // on it pushSuspenseContext( workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current) ); // The primary children do not have pending work with sufficient // priority. Bailout. var child = bailoutOnAlreadyFinishedWork( current, workInProgress, renderLanes ); if (child !== null) { // The fallback children have pending work. Skip over the // primary children and work on the fallback. return child.sibling; } else { // Note: We can return `null` here because we already checked // whether there were nested context consumers, via the call to // `bailoutOnAlreadyFinishedWork` above. return null; } } } else { pushSuspenseContext( workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current) ); } break; } case SuspenseListComponent: { var didSuspendBefore = (current.flags & DidCapture) !== NoFlags; var _hasChildWork = includesSomeLane( renderLanes, workInProgress.childLanes ); if (didSuspendBefore) { if (_hasChildWork) { // If something was in fallback state last time, and we have all the // same children then we're still in progressive loading state. // Something might get unblocked by state updates or retries in the // tree which will affect the tail. So we need to use the normal // path to compute the correct tail. return updateSuspenseListComponent( current, workInProgress, renderLanes ); } // If none of the children had any work, that means that none of // them got retried so they'll still be blocked in the same way // as before. We can fast bail out. workInProgress.flags |= DidCapture; } // If nothing suspended before and we're rendering the same children, // then the tail doesn't matter. Anything new that suspends will work // in the "together" mode, so we can continue from the state we had. var renderState = workInProgress.memoizedState; if (renderState !== null) { // Reset to the "together" mode in case we've started a different // update in the past but didn't complete it. renderState.rendering = null; renderState.tail = null; renderState.lastEffect = null; } pushSuspenseContext(workInProgress, suspenseStackCursor.current); if (_hasChildWork) { break; } else { // If none of the children had any work, that means that none of // them got retried so they'll still be blocked in the same way // as before. We can fast bail out. return null; } } case OffscreenComponent: case LegacyHiddenComponent: { // Need to check if the tree still needs to be deferred. This is // almost identical to the logic used in the normal update path, // so we'll just enter that. The only difference is we'll bail out // at the next level instead of this one, because the child props // have not changed. Which is fine. // TODO: Probably should refactor `beginWork` to split the bailout // path from the normal path. I'm tempted to do a labeled break here // but I won't :) workInProgress.lanes = NoLanes; return updateOffscreenComponent(current, workInProgress, renderLanes); } } return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } function beginWork(current, workInProgress, renderLanes) { { if (workInProgress._debugNeedsRemount && current !== null) { // This will restart the begin phase with a new fiber. return remountFiber( current, workInProgress, createFiberFromTypeAndProps( workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.lanes ) ); } } if (current !== null) { var oldProps = current.memoizedProps; var newProps = workInProgress.pendingProps; if ( oldProps !== newProps || hasContextChanged() || // Force a re-render if the implementation changed due to hot reload: workInProgress.type !== current.type ) { // If props or context changed, mark the fiber as having performed work. // This may be unset if the props are determined to be equal later (memo). didReceiveUpdate = true; } else { // Neither props nor legacy context changes. Check if there's a pending // update or context change. var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( current, renderLanes ); if ( !hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there // may not be work scheduled on `current`, so we check for this flag. (workInProgress.flags & DidCapture) === NoFlags ) { // No pending updates or context. Bail out now. didReceiveUpdate = false; return attemptEarlyBailoutIfNoScheduledUpdate( current, workInProgress, renderLanes ); } if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags) { // This is a special case that only exists for legacy mode. // See https://github.com/facebook/react/pull/19216. didReceiveUpdate = true; } else { // An update was scheduled on this fiber, but there are no new props // nor legacy context. Set this to false. If an update queue or context // consumer produces a changed value, it will set this to true. Otherwise, // the component will assume the children have not changed and bail out. didReceiveUpdate = false; } } } else { didReceiveUpdate = false; } // Before entering the begin phase, clear pending update priority. // TODO: This assumes that we're about to evaluate the component and process // the update queue. However, there's an exception: SimpleMemoComponent // sometimes bails out later in the begin phase. This indicates that we should // move this assignment out of the common path and into each branch. workInProgress.lanes = NoLanes; switch (workInProgress.tag) { case IndeterminateComponent: { return mountIndeterminateComponent( current, workInProgress, workInProgress.type, renderLanes ); } case LazyComponent: { var elementType = workInProgress.elementType; return mountLazyComponent( current, workInProgress, elementType, renderLanes ); } case FunctionComponent: { var Component = workInProgress.type; var unresolvedProps = workInProgress.pendingProps; var resolvedProps = workInProgress.elementType === Component ? unresolvedProps : resolveDefaultProps(Component, unresolvedProps); return updateFunctionComponent( current, workInProgress, Component, resolvedProps, renderLanes ); } case ClassComponent: { var _Component = workInProgress.type; var _unresolvedProps = workInProgress.pendingProps; var _resolvedProps = workInProgress.elementType === _Component ? _unresolvedProps : resolveDefaultProps(_Component, _unresolvedProps); return updateClassComponent( current, workInProgress, _Component, _resolvedProps, renderLanes ); } case HostRoot: return updateHostRoot(current, workInProgress, renderLanes); case HostComponent: return updateHostComponent(current, workInProgress, renderLanes); case HostText: return updateHostText(); case SuspenseComponent: return updateSuspenseComponent(current, workInProgress, renderLanes); case HostPortal: return updatePortalComponent(current, workInProgress, renderLanes); case ForwardRef: { var type = workInProgress.type; var _unresolvedProps2 = workInProgress.pendingProps; var _resolvedProps2 = workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultProps(type, _unresolvedProps2); return updateForwardRef( current, workInProgress, type, _resolvedProps2, renderLanes ); } case Fragment: return updateFragment(current, workInProgress, renderLanes); case Mode: return updateMode(current, workInProgress, renderLanes); case Profiler: return updateProfiler(current, workInProgress, renderLanes); case ContextProvider: return updateContextProvider(current, workInProgress, renderLanes); case ContextConsumer: return updateContextConsumer(current, workInProgress, renderLanes); case MemoComponent: { var _type2 = workInProgress.type; var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3); { if (workInProgress.type !== workInProgress.elementType) { var outerPropTypes = _type2.propTypes; if (outerPropTypes) { checkPropTypes( outerPropTypes, _resolvedProps3, // Resolved for outer only "prop", getComponentNameFromType(_type2) ); } } } _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3); return updateMemoComponent( current, workInProgress, _type2, _resolvedProps3, renderLanes ); } case SimpleMemoComponent: { return updateSimpleMemoComponent( current, workInProgress, workInProgress.type, workInProgress.pendingProps, renderLanes ); } case IncompleteClassComponent: { var _Component2 = workInProgress.type; var _unresolvedProps4 = workInProgress.pendingProps; var _resolvedProps4 = workInProgress.elementType === _Component2 ? _unresolvedProps4 : resolveDefaultProps(_Component2, _unresolvedProps4); return mountIncompleteClassComponent( current, workInProgress, _Component2, _resolvedProps4, renderLanes ); } case SuspenseListComponent: { return updateSuspenseListComponent(current, workInProgress, renderLanes); } case ScopeComponent: { break; } case OffscreenComponent: { return updateOffscreenComponent(current, workInProgress, renderLanes); } } throw new Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + "React. Please file an issue." ); } function markUpdate(workInProgress) { // Tag the fiber with an update effect. This turns a Placement into // a PlacementAndUpdate. workInProgress.flags |= Update; } function markRef$1(workInProgress) { workInProgress.flags |= Ref; } var appendAllChildren; var updateHostContainer; var updateHostComponent$1; var updateHostText$1; { // Mutation mode appendAllChildren = function( parent, workInProgress, needsVisibilityToggle, isHidden ) { // We only have the top Fiber that was created but we need recurse down its // children to find all the terminal nodes. var node = workInProgress.child; while (node !== null) { if (node.tag === HostComponent || node.tag === HostText) { appendInitialChild(parent, node.stateNode); } else if (node.tag === HostPortal); else if (node.child !== null) { node.child.return = node; node = node.child; continue; } if (node === workInProgress) { return; } while (node.sibling === null) { if (node.return === null || node.return === workInProgress) { return; } node = node.return; } node.sibling.return = node.return; node = node.sibling; } }; updateHostContainer = function(current, workInProgress) { // Noop }; updateHostComponent$1 = function( current, workInProgress, type, newProps, rootContainerInstance ) { // If we have an alternate, that means this is an update and we need to // schedule a side-effect to do the updates. var oldProps = current.memoizedProps; if (oldProps === newProps) { // In mutation mode, this is sufficient for a bailout because // we won't touch this node even if children changed. return; } // If we get updated because one of our children updated, we don't // have newProps so we'll have to reuse them. // TODO: Split the update API as separate for the props vs. children. // Even better would be if children weren't special cased at all tho. var instance = workInProgress.stateNode; var currentHostContext = getHostContext(); // TODO: Experiencing an error where oldProps is null. Suggests a host // component is hitting the resume path. Figure out why. Possibly // related to `hidden`. var updatePayload = prepareUpdate(); // TODO: Type this specific to this type of component. workInProgress.updateQueue = updatePayload; // If the update payload indicates that there is a change or if there // is a new ref we mark this as an update. All the work is done in commitWork. if (updatePayload) { markUpdate(workInProgress); } }; updateHostText$1 = function(current, workInProgress, oldText, newText) { // If the text differs, mark it as an update. All the work in done in commitWork. if (oldText !== newText) { markUpdate(workInProgress); } }; } function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { switch (renderState.tailMode) { case "hidden": { // Any insertions at the end of the tail list after this point // should be invisible. If there are already mounted boundaries // anything before them are not considered for collapsing. // Therefore we need to go through the whole tail to find if // there are any. var tailNode = renderState.tail; var lastTailNode = null; while (tailNode !== null) { if (tailNode.alternate !== null) { lastTailNode = tailNode; } tailNode = tailNode.sibling; } // Next we're simply going to delete all insertions after the // last rendered item. if (lastTailNode === null) { // All remaining items in the tail are insertions. renderState.tail = null; } else { // Detach the insertion after the last node that was already // inserted. lastTailNode.sibling = null; } break; } case "collapsed": { // Any insertions at the end of the tail list after this point // should be invisible. If there are already mounted boundaries // anything before them are not considered for collapsing. // Therefore we need to go through the whole tail to find if // there are any. var _tailNode = renderState.tail; var _lastTailNode = null; while (_tailNode !== null) { if (_tailNode.alternate !== null) { _lastTailNode = _tailNode; } _tailNode = _tailNode.sibling; } // Next we're simply going to delete all insertions after the // last rendered item. if (_lastTailNode === null) { // All remaining items in the tail are insertions. if (!hasRenderedATailFallback && renderState.tail !== null) { // We suspended during the head. We want to show at least one // row at the tail. So we'll keep on and cut off the rest. renderState.tail.sibling = null; } else { renderState.tail = null; } } else { // Detach the insertion after the last node that was already // inserted. _lastTailNode.sibling = null; } break; } } } function bubbleProperties(completedWork) { var didBailout = completedWork.alternate !== null && completedWork.alternate.child === completedWork.child; var newChildLanes = NoLanes; var subtreeFlags = NoFlags; if (!didBailout) { // Bubble up the earliest expiration time. if ((completedWork.mode & ProfileMode) !== NoMode) { // In profiling mode, resetChildExpirationTime is also used to reset // profiler durations. var actualDuration = completedWork.actualDuration; var treeBaseDuration = completedWork.selfBaseDuration; var child = completedWork.child; while (child !== null) { newChildLanes = mergeLanes( newChildLanes, mergeLanes(child.lanes, child.childLanes) ); subtreeFlags |= child.subtreeFlags; subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will // only be updated if work is done on the fiber (i.e. it doesn't bailout). // When work is done, it should bubble to the parent's actualDuration. If // the fiber has not been cloned though, (meaning no work was done), then // this value will reflect the amount of time spent working on a previous // render. In that case it should not bubble. We determine whether it was // cloned by comparing the child pointer. actualDuration += child.actualDuration; treeBaseDuration += child.treeBaseDuration; child = child.sibling; } completedWork.actualDuration = actualDuration; completedWork.treeBaseDuration = treeBaseDuration; } else { var _child = completedWork.child; while (_child !== null) { newChildLanes = mergeLanes( newChildLanes, mergeLanes(_child.lanes, _child.childLanes) ); subtreeFlags |= _child.subtreeFlags; subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code // smell because it assumes the commit phase is never concurrent with // the render phase. Will address during refactor to alternate model. _child.return = completedWork; _child = _child.sibling; } } completedWork.subtreeFlags |= subtreeFlags; } else { // Bubble up the earliest expiration time. if ((completedWork.mode & ProfileMode) !== NoMode) { // In profiling mode, resetChildExpirationTime is also used to reset // profiler durations. var _treeBaseDuration = completedWork.selfBaseDuration; var _child2 = completedWork.child; while (_child2 !== null) { newChildLanes = mergeLanes( newChildLanes, mergeLanes(_child2.lanes, _child2.childLanes) ); // "Static" flags share the lifetime of the fiber/hook they belong to, // so we should bubble those up even during a bailout. All the other // flags have a lifetime only of a single render + commit, so we should // ignore them. subtreeFlags |= _child2.subtreeFlags & StaticMask; subtreeFlags |= _child2.flags & StaticMask; _treeBaseDuration += _child2.treeBaseDuration; _child2 = _child2.sibling; } completedWork.treeBaseDuration = _treeBaseDuration; } else { var _child3 = completedWork.child; while (_child3 !== null) { newChildLanes = mergeLanes( newChildLanes, mergeLanes(_child3.lanes, _child3.childLanes) ); // "Static" flags share the lifetime of the fiber/hook they belong to, // so we should bubble those up even during a bailout. All the other // flags have a lifetime only of a single render + commit, so we should // ignore them. subtreeFlags |= _child3.subtreeFlags & StaticMask; subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code // smell because it assumes the commit phase is never concurrent with // the render phase. Will address during refactor to alternate model. _child3.return = completedWork; _child3 = _child3.sibling; } } completedWork.subtreeFlags |= subtreeFlags; } completedWork.childLanes = newChildLanes; return didBailout; } function completeDehydratedSuspenseBoundary( current, workInProgress, nextState ) { var wasHydrated = popHydrationState(); if (nextState !== null && nextState.dehydrated !== null) { // We might be inside a hydration state the first time we're picking up this // Suspense boundary, and also after we've reentered it for further hydration. if (current === null) { if (!wasHydrated) { throw new Error( "A dehydrated suspense component was completed without a hydrated node. " + "This is probably a bug in React." ); } prepareToHydrateHostSuspenseInstance(); bubbleProperties(workInProgress); { if ((workInProgress.mode & ProfileMode) !== NoMode) { var isTimedOutSuspense = nextState !== null; if (isTimedOutSuspense) { // Don't count time spent in a timed out Suspense subtree as part of the base duration. var primaryChildFragment = workInProgress.child; if (primaryChildFragment !== null) { // $FlowFixMe Flow doesn't support type casting in combination with the -= operator workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; } } } } return false; } else { if ((workInProgress.flags & DidCapture) === NoFlags) { // This boundary did not suspend so it's now hydrated and unsuspended. workInProgress.memoizedState = null; } // If nothing suspended, we need to schedule an effect to mark this boundary // as having hydrated so events know that they're free to be invoked. // It's also a signal to replay events and the suspense callback. // If something suspended, schedule an effect to attach retry listeners. // So we might as well always mark this. workInProgress.flags |= Update; bubbleProperties(workInProgress); { if ((workInProgress.mode & ProfileMode) !== NoMode) { var _isTimedOutSuspense = nextState !== null; if (_isTimedOutSuspense) { // Don't count time spent in a timed out Suspense subtree as part of the base duration. var _primaryChildFragment = workInProgress.child; if (_primaryChildFragment !== null) { // $FlowFixMe Flow doesn't support type casting in combination with the -= operator workInProgress.treeBaseDuration -= _primaryChildFragment.treeBaseDuration; } } } } return false; } } else { // Successfully completed this tree. If this was a forced client render, // there may have been recoverable errors during first hydration // attempt. If so, add them to a queue so we can log them in the // commit phase. upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path return true; } } function completeWork(current, workInProgress, renderLanes) { var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing // to the current tree provider fiber is just as fast and less error-prone. // Ideally we would have a special version of the work loop only // for hydration. popTreeContext(workInProgress); switch (workInProgress.tag) { case IndeterminateComponent: case LazyComponent: case SimpleMemoComponent: case FunctionComponent: case ForwardRef: case Fragment: case Mode: case Profiler: case ContextConsumer: case MemoComponent: bubbleProperties(workInProgress); return null; case ClassComponent: { var Component = workInProgress.type; if (isContextProvider(Component)) { popContext(workInProgress); } bubbleProperties(workInProgress); return null; } case HostRoot: { var fiberRoot = workInProgress.stateNode; popHostContainer(workInProgress); popTopLevelContextObject(workInProgress); resetWorkInProgressVersions(); if (fiberRoot.pendingContext) { fiberRoot.context = fiberRoot.pendingContext; fiberRoot.pendingContext = null; } if (current === null || current.child === null) { // If we hydrated, pop so that we can delete any remaining children // that weren't hydrated. var wasHydrated = popHydrationState(); if (wasHydrated) { // If we hydrated, then we'll need to schedule an update for // the commit side-effects on the root. markUpdate(workInProgress); } else { if (current !== null) { var prevState = current.memoizedState; if ( // Check if this is a client root !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) (workInProgress.flags & ForceClientRender) !== NoFlags ) { // Schedule an effect to clear this container at the start of the // next commit. This handles the case of React rendering into a // container with previous children. It's also safe to do for // updates too, because current.child would only be null if the // previous render was null (so the container would already // be empty). workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been // recoverable errors during first hydration attempt. If so, add // them to a queue so we can log them in the commit phase. upgradeHydrationErrorsToRecoverable(); } } } } updateHostContainer(current, workInProgress); bubbleProperties(workInProgress); return null; } case HostComponent: { popHostContext(workInProgress); var rootContainerInstance = getRootHostContainer(); var type = workInProgress.type; if (current !== null && workInProgress.stateNode != null) { updateHostComponent$1( current, workInProgress, type, newProps, rootContainerInstance ); if (current.ref !== workInProgress.ref) { markRef$1(workInProgress); } } else { if (!newProps) { if (workInProgress.stateNode === null) { throw new Error( "We must have new props for new mounts. This error is likely " + "caused by a bug in React. Please file an issue." ); } // This can happen when we abort work. bubbleProperties(workInProgress); return null; } var currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context // "stack" as the parent. Then append children as we go in beginWork // or completeWork depending on whether we want to add them top->down or // bottom->up. Top->down is faster in IE11. var _wasHydrated = popHydrationState(); if (_wasHydrated) { // TODO: Move this and createInstance step into the beginPhase // to consolidate. if (prepareToHydrateHostInstance()) { // If changes to the hydrated node need to be applied at the // commit-phase we mark this as such. markUpdate(workInProgress); } } else { var instance = createInstance( type, newProps, rootContainerInstance, currentHostContext, workInProgress ); appendAllChildren(instance, workInProgress, false, false); workInProgress.stateNode = instance; // Certain renderers require commit-time effects for initial mount. // (eg DOM renderer supports auto-focus for certain elements). // Make sure such renderers get scheduled for later work. if (finalizeInitialChildren(instance)) { markUpdate(workInProgress); } } if (workInProgress.ref !== null) { // If there is a ref on a host node we need to schedule a callback markRef$1(workInProgress); } } bubbleProperties(workInProgress); return null; } case HostText: { var newText = newProps; if (current && workInProgress.stateNode != null) { var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need // to schedule a side-effect to do the updates. updateHostText$1(current, workInProgress, oldText, newText); } else { if (typeof newText !== "string") { if (workInProgress.stateNode === null) { throw new Error( "We must have new props for new mounts. This error is likely " + "caused by a bug in React. Please file an issue." ); } // This can happen when we abort work. } var _rootContainerInstance = getRootHostContainer(); var _currentHostContext = getHostContext(); var _wasHydrated2 = popHydrationState(); if (_wasHydrated2) { if (prepareToHydrateHostTextInstance()) { markUpdate(workInProgress); } } else { workInProgress.stateNode = createTextInstance( newText, _rootContainerInstance, _currentHostContext, workInProgress ); } } bubbleProperties(workInProgress); return null; } case SuspenseComponent: { popSuspenseContext(workInProgress); var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this // to its own fiber type so that we can add other kinds of hydration // boundaries that aren't associated with a Suspense tree. In anticipation // of such a refactor, all the hydration logic is contained in // this branch. if ( current === null || (current.memoizedState !== null && current.memoizedState.dehydrated !== null) ) { var fallthroughToNormalSuspensePath = completeDehydratedSuspenseBoundary( current, workInProgress, nextState ); if (!fallthroughToNormalSuspensePath) { if (workInProgress.flags & ShouldCapture) { // Special case. There were remaining unhydrated nodes. We treat // this as a mismatch. Revert to client rendering. return workInProgress; } else { // Did not finish hydrating, either because this is the initial // render or because something suspended. return null; } } // Continue with the normal Suspense path. } if ((workInProgress.flags & DidCapture) !== NoFlags) { // Something suspended. Re-render with the fallback children. workInProgress.lanes = renderLanes; // Do not reset the effect list. if ((workInProgress.mode & ProfileMode) !== NoMode) { transferActualDuration(workInProgress); } // Don't bubble properties in this case. return workInProgress; } var nextDidTimeout = nextState !== null; var prevDidTimeout = current !== null && current.memoizedState !== null; // a passive effect, which is when we process the transitions if (nextDidTimeout !== prevDidTimeout) { // an effect to toggle the subtree's visibility. When we switch from // fallback -> primary, the inner Offscreen fiber schedules this effect // as part of its normal complete phase. But when we switch from // primary -> fallback, the inner Offscreen fiber does not have a complete // phase. So we need to schedule its effect here. // // We also use this flag to connect/disconnect the effects, but the same // logic applies: when re-connecting, the Offscreen fiber's complete // phase will handle scheduling the effect. It's only when the fallback // is active that we have to do anything special. if (nextDidTimeout) { var _offscreenFiber2 = workInProgress.child; _offscreenFiber2.flags |= Visibility; // TODO: This will still suspend a synchronous tree if anything // in the concurrent tree already suspended during this render. // This is a known bug. if ((workInProgress.mode & ConcurrentMode) !== NoMode) { // TODO: Move this back to throwException because this is too late // if this is a large tree which is common for initial loads. We // don't know if we should restart a render or not until we get // this marker, and this is too late. // If this render already had a ping or lower pri updates, // and this is the first time we know we're going to suspend we // should be able to immediately restart from within throwException. var hasInvisibleChildContext = current === null && (workInProgress.memoizedProps.unstable_avoidThisFallback !== true || !enableSuspenseAvoidThisFallback); if ( hasInvisibleChildContext || hasSuspenseContext( suspenseStackCursor.current, InvisibleParentSuspenseContext ) ) { // If this was in an invisible tree or a new render, then showing // this boundary is ok. renderDidSuspend(); } else { // Otherwise, we're going to have to hide content so we should // suspend for longer if possible. renderDidSuspendDelayIfPossible(); } } } } var wakeables = workInProgress.updateQueue; if (wakeables !== null) { // Schedule an effect to attach a retry listener to the promise. // TODO: Move to passive phase workInProgress.flags |= Update; } bubbleProperties(workInProgress); { if ((workInProgress.mode & ProfileMode) !== NoMode) { if (nextDidTimeout) { // Don't count time spent in a timed out Suspense subtree as part of the base duration. var primaryChildFragment = workInProgress.child; if (primaryChildFragment !== null) { // $FlowFixMe Flow doesn't support type casting in combination with the -= operator workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; } } } } return null; } case HostPortal: popHostContainer(workInProgress); updateHostContainer(current, workInProgress); if (current === null) { preparePortalMount(workInProgress.stateNode.containerInfo); } bubbleProperties(workInProgress); return null; case ContextProvider: // Pop provider fiber var context = workInProgress.type._context; popProvider(context, workInProgress); bubbleProperties(workInProgress); return null; case IncompleteClassComponent: { // Same as class component case. I put it down here so that the tags are // sequential to ensure this switch is compiled to a jump table. var _Component = workInProgress.type; if (isContextProvider(_Component)) { popContext(workInProgress); } bubbleProperties(workInProgress); return null; } case SuspenseListComponent: { popSuspenseContext(workInProgress); var renderState = workInProgress.memoizedState; if (renderState === null) { // We're running in the default, "independent" mode. // We don't do anything in this mode. bubbleProperties(workInProgress); return null; } var didSuspendAlready = (workInProgress.flags & DidCapture) !== NoFlags; var renderedTail = renderState.rendering; if (renderedTail === null) { // We just rendered the head. if (!didSuspendAlready) { // This is the first pass. We need to figure out if anything is still // suspended in the rendered set. // If new content unsuspended, but there's still some content that // didn't. Then we need to do a second pass that forces everything // to keep showing their fallbacks. // We might be suspended if something in this render pass suspended, or // something in the previous committed pass suspended. Otherwise, // there's no chance so we can skip the expensive call to // findFirstSuspended. var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.flags & DidCapture) === NoFlags); if (!cannotBeSuspended) { var row = workInProgress.child; while (row !== null) { var suspended = findFirstSuspended(row); if (suspended !== null) { didSuspendAlready = true; workInProgress.flags |= DidCapture; cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as // part of the second pass. In that case nothing will subscribe to // its thenables. Instead, we'll transfer its thenables to the // SuspenseList so that it can retry if they resolve. // There might be multiple of these in the list but since we're // going to wait for all of them anyway, it doesn't really matter // which ones gets to ping. In theory we could get clever and keep // track of how many dependencies remain but it gets tricky because // in the meantime, we can add/remove/change items and dependencies. // We might bail out of the loop before finding any but that // doesn't matter since that means that the other boundaries that // we did find already has their listeners attached. var newThenables = suspended.updateQueue; if (newThenables !== null) { workInProgress.updateQueue = newThenables; workInProgress.flags |= Update; } // Rerender the whole list, but this time, we'll force fallbacks // to stay in place. // Reset the effect flags before doing the second pass since that's now invalid. // Reset the child fibers to their original state. workInProgress.subtreeFlags = NoFlags; resetChildFibers(workInProgress, renderLanes); // Set up the Suspense Context to force suspense and immediately // rerender the children. pushSuspenseContext( workInProgress, setShallowSuspenseContext( suspenseStackCursor.current, ForceSuspenseFallback ) ); // Don't bubble properties in this case. return workInProgress.child; } row = row.sibling; } } if (renderState.tail !== null && now() > getRenderTargetTime()) { // We have already passed our CPU deadline but we still have rows // left in the tail. We'll just give up further attempts to render // the main content and only render fallbacks. workInProgress.flags |= DidCapture; didSuspendAlready = true; cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this // to get it started back up to attempt the next item. While in terms // of priority this work has the same priority as this current render, // it's not part of the same transition once the transition has // committed. If it's sync, we still want to yield so that it can be // painted. Conceptually, this is really the same as pinging. // We can use any RetryLane even if it's the one currently rendering // since we're leaving it behind on this node. workInProgress.lanes = SomeRetryLane; } } else { cutOffTailIfNeeded(renderState, false); } // Next we're going to render the tail. } else { // Append the rendered row to the child list. if (!didSuspendAlready) { var _suspended = findFirstSuspended(renderedTail); if (_suspended !== null) { workInProgress.flags |= DidCapture; didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't // get lost if this row ends up dropped during a second pass. var _newThenables = _suspended.updateQueue; if (_newThenables !== null) { workInProgress.updateQueue = _newThenables; workInProgress.flags |= Update; } cutOffTailIfNeeded(renderState, true); // This might have been modified. if ( renderState.tail === null && renderState.tailMode === "hidden" && !renderedTail.alternate && !getIsHydrating() // We don't cut it if we're hydrating. ) { // We're done. bubbleProperties(workInProgress); return null; } } else if ( // The time it took to render last row is greater than the remaining // time we have to render. So rendering one more row would likely // exceed it. now() * 2 - renderState.renderingStartTime > getRenderTargetTime() && renderLanes !== OffscreenLane ) { // We have now passed our CPU deadline and we'll just give up further // attempts to render the main content and only render fallbacks. // The assumption is that this is usually faster. workInProgress.flags |= DidCapture; didSuspendAlready = true; cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this // to get it started back up to attempt the next item. While in terms // of priority this work has the same priority as this current render, // it's not part of the same transition once the transition has // committed. If it's sync, we still want to yield so that it can be // painted. Conceptually, this is really the same as pinging. // We can use any RetryLane even if it's the one currently rendering // since we're leaving it behind on this node. workInProgress.lanes = SomeRetryLane; } } if (renderState.isBackwards) { // The effect list of the backwards tail will have been added // to the end. This breaks the guarantee that life-cycles fire in // sibling order but that isn't a strong guarantee promised by React. // Especially since these might also just pop in during future commits. // Append to the beginning of the list. renderedTail.sibling = workInProgress.child; workInProgress.child = renderedTail; } else { var previousSibling = renderState.last; if (previousSibling !== null) { previousSibling.sibling = renderedTail; } else { workInProgress.child = renderedTail; } renderState.last = renderedTail; } } if (renderState.tail !== null) { // We still have tail rows to render. // Pop a row. var next = renderState.tail; renderState.rendering = next; renderState.tail = next.sibling; renderState.renderingStartTime = now(); next.sibling = null; // Restore the context. // TODO: We can probably just avoid popping it instead and only // setting it the first time we go from not suspended to suspended. var suspenseContext = suspenseStackCursor.current; if (didSuspendAlready) { suspenseContext = setShallowSuspenseContext( suspenseContext, ForceSuspenseFallback ); } else { suspenseContext = setDefaultShallowSuspenseContext(suspenseContext); } pushSuspenseContext(workInProgress, suspenseContext); // Do a pass over the next row. // Don't bubble properties in this case. return next; } bubbleProperties(workInProgress); return null; } case ScopeComponent: { break; } case OffscreenComponent: case LegacyHiddenComponent: { popRenderLanes(workInProgress); var _nextState = workInProgress.memoizedState; var nextIsHidden = _nextState !== null; if (current !== null) { var _prevState = current.memoizedState; var prevIsHidden = _prevState !== null; if ( prevIsHidden !== nextIsHidden && // LegacyHidden doesn't do any hiding — it only pre-renders. !enableLegacyHidden ) { workInProgress.flags |= Visibility; } } if (!nextIsHidden || (workInProgress.mode & ConcurrentMode) === NoMode) { bubbleProperties(workInProgress); } else { // Don't bubble properties for hidden children unless we're rendering // at offscreen priority. if (includesSomeLane(subtreeRenderLanes, OffscreenLane)) { bubbleProperties(workInProgress); { // Check if there was an insertion or update in the hidden subtree. // If so, we need to hide those nodes in the commit phase, so // schedule a visibility effect. if (workInProgress.subtreeFlags & (Placement | Update)) { workInProgress.flags |= Visibility; } } } } return null; } case CacheComponent: { return null; } case TracingMarkerComponent: { return null; } } throw new Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + "React. Please file an issue." ); } function unwindWork(current, workInProgress, renderLanes) { // Note: This intentionally doesn't check if we're hydrating because comparing // to the current tree provider fiber is just as fast and less error-prone. // Ideally we would have a special version of the work loop only // for hydration. popTreeContext(workInProgress); switch (workInProgress.tag) { case ClassComponent: { var Component = workInProgress.type; if (isContextProvider(Component)) { popContext(workInProgress); } var flags = workInProgress.flags; if (flags & ShouldCapture) { workInProgress.flags = (flags & ~ShouldCapture) | DidCapture; if ((workInProgress.mode & ProfileMode) !== NoMode) { transferActualDuration(workInProgress); } return workInProgress; } return null; } case HostRoot: { var root = workInProgress.stateNode; popHostContainer(workInProgress); popTopLevelContextObject(workInProgress); resetWorkInProgressVersions(); var _flags = workInProgress.flags; if ( (_flags & ShouldCapture) !== NoFlags && (_flags & DidCapture) === NoFlags ) { // There was an error during render that wasn't captured by a suspense // boundary. Do a second pass on the root to unmount the children. workInProgress.flags = (_flags & ~ShouldCapture) | DidCapture; return workInProgress; } // We unwound to the root without completing it. Exit. return null; } case HostComponent: { // TODO: popHydrationState popHostContext(workInProgress); return null; } case SuspenseComponent: { popSuspenseContext(workInProgress); var suspenseState = workInProgress.memoizedState; if (suspenseState !== null && suspenseState.dehydrated !== null) { if (workInProgress.alternate === null) { throw new Error( "Threw in newly mounted dehydrated component. This is likely a bug in " + "React. Please file an issue." ); } } var _flags2 = workInProgress.flags; if (_flags2 & ShouldCapture) { workInProgress.flags = (_flags2 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. if ((workInProgress.mode & ProfileMode) !== NoMode) { transferActualDuration(workInProgress); } return workInProgress; } return null; } case SuspenseListComponent: { popSuspenseContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been // caught by a nested boundary. If not, it should bubble through. return null; } case HostPortal: popHostContainer(workInProgress); return null; case ContextProvider: var context = workInProgress.type._context; popProvider(context, workInProgress); return null; case OffscreenComponent: case LegacyHiddenComponent: popRenderLanes(workInProgress); return null; case CacheComponent: return null; default: return null; } } function unwindInterruptedWork(current, interruptedWork, renderLanes) { // Note: This intentionally doesn't check if we're hydrating because comparing // to the current tree provider fiber is just as fast and less error-prone. // Ideally we would have a special version of the work loop only // for hydration. popTreeContext(interruptedWork); switch (interruptedWork.tag) { case ClassComponent: { var childContextTypes = interruptedWork.type.childContextTypes; if (childContextTypes !== null && childContextTypes !== undefined) { popContext(interruptedWork); } break; } case HostRoot: { var root = interruptedWork.stateNode; popHostContainer(interruptedWork); popTopLevelContextObject(interruptedWork); resetWorkInProgressVersions(); break; } case HostComponent: { popHostContext(interruptedWork); break; } case HostPortal: popHostContainer(interruptedWork); break; case SuspenseComponent: popSuspenseContext(interruptedWork); break; case SuspenseListComponent: popSuspenseContext(interruptedWork); break; case ContextProvider: var context = interruptedWork.type._context; popProvider(context, interruptedWork); break; case OffscreenComponent: case LegacyHiddenComponent: popRenderLanes(interruptedWork); break; } } var didWarnAboutUndefinedSnapshotBeforeUpdate = null; { didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); } // Used during the commit phase to track the state of the Offscreen component stack. var PossiblyWeakSet = typeof WeakSet === "function" ? WeakSet : Set; var nextEffect = null; // Used for Profiling builds to track updaters. var inProgressLanes = null; var inProgressRoot = null; function reportUncaughtErrorInDEV(error) { // Wrapping each small part of the commit phase into a guarded // callback is a bit too slow (https://github.com/facebook/react/pull/21666). // But we rely on it to surface errors to DEV tools like overlays // (https://github.com/facebook/react/issues/21712). // As a compromise, rethrow only caught errors in a guard. { invokeGuardedCallback(null, function() { throw error; }); clearCaughtError(); } } var callComponentWillUnmountWithTimer = function(current, instance) { instance.props = current.memoizedProps; instance.state = current.memoizedState; if (current.mode & ProfileMode) { try { startLayoutEffectTimer(); instance.componentWillUnmount(); } finally { recordLayoutEffectDuration(current); } } else { instance.componentWillUnmount(); } }; // Capture errors so they don't interrupt mounting. function safelyCallComponentWillUnmount( current, nearestMountedAncestor, instance ) { try { callComponentWillUnmountWithTimer(current, instance); } catch (error) { captureCommitPhaseError(current, nearestMountedAncestor, error); } } // Capture errors so they don't interrupt mounting. function safelyDetachRef(current, nearestMountedAncestor) { var ref = current.ref; if (ref !== null) { if (typeof ref === "function") { var retVal; try { if ( enableProfilerTimer && enableProfilerCommitHooks && current.mode & ProfileMode ) { try { startLayoutEffectTimer(); retVal = ref(null); } finally { recordLayoutEffectDuration(current); } } else { retVal = ref(null); } } catch (error) { captureCommitPhaseError(current, nearestMountedAncestor, error); } { if (typeof retVal === "function") { error( "Unexpected return value from a callback ref in %s. " + "A callback ref should not return a function.", getComponentNameFromFiber(current) ); } } } else { ref.current = null; } } } function safelyCallDestroy(current, nearestMountedAncestor, destroy) { try { destroy(); } catch (error) { captureCommitPhaseError(current, nearestMountedAncestor, error); } } var focusedInstanceHandle = null; var shouldFireAfterActiveInstanceBlur = false; function commitBeforeMutationEffects(root, firstChild) { focusedInstanceHandle = prepareForCommit(root.containerInfo); nextEffect = firstChild; commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber var shouldFire = shouldFireAfterActiveInstanceBlur; shouldFireAfterActiveInstanceBlur = false; focusedInstanceHandle = null; return shouldFire; } function commitBeforeMutationEffects_begin() { while (nextEffect !== null) { var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. var child = fiber.child; if ( (fiber.subtreeFlags & BeforeMutationMask) !== NoFlags && child !== null ) { child.return = fiber; nextEffect = child; } else { commitBeforeMutationEffects_complete(); } } } function commitBeforeMutationEffects_complete() { while (nextEffect !== null) { var fiber = nextEffect; setCurrentFiber(fiber); try { commitBeforeMutationEffectsOnFiber(fiber); } catch (error) { captureCommitPhaseError(fiber, fiber.return, error); } resetCurrentFiber(); var sibling = fiber.sibling; if (sibling !== null) { sibling.return = fiber.return; nextEffect = sibling; return; } nextEffect = fiber.return; } } function commitBeforeMutationEffectsOnFiber(finishedWork) { var current = finishedWork.alternate; var flags = finishedWork.flags; if ((flags & Snapshot) !== NoFlags) { setCurrentFiber(finishedWork); switch (finishedWork.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { break; } case ClassComponent: { if (current !== null) { var prevProps = current.memoizedProps; var prevState = current.memoizedState; var instance = finishedWork.stateNode; // We could update instance props and state here, // but instead we rely on them being set during last render. // TODO: revisit this when we implement resuming. { if ( finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps ) { if (instance.props !== finishedWork.memoizedProps) { error( "Expected %s props to match memoized props before " + "getSnapshotBeforeUpdate. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.props`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } if (instance.state !== finishedWork.memoizedState) { error( "Expected %s state to match memoized state before " + "getSnapshotBeforeUpdate. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.state`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } } } var snapshot = instance.getSnapshotBeforeUpdate( finishedWork.elementType === finishedWork.type ? prevProps : resolveDefaultProps(finishedWork.type, prevProps), prevState ); { var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) { didWarnSet.add(finishedWork.type); error( "%s.getSnapshotBeforeUpdate(): A snapshot value (or null) " + "must be returned. You have returned undefined.", getComponentNameFromFiber(finishedWork) ); } } instance.__reactInternalSnapshotBeforeUpdate = snapshot; } break; } case HostRoot: { { var root = finishedWork.stateNode; clearContainer(root.containerInfo); } break; } case HostComponent: case HostText: case HostPortal: case IncompleteClassComponent: // Nothing to do for these component types break; default: { throw new Error( "This unit of work tag should not have side-effects. This error is " + "likely caused by a bug in React. Please file an issue." ); } } resetCurrentFiber(); } } function commitHookEffectListUnmount( flags, finishedWork, nearestMountedAncestor ) { var updateQueue = finishedWork.updateQueue; var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; if (lastEffect !== null) { var firstEffect = lastEffect.next; var effect = firstEffect; do { if ((effect.tag & flags) === flags) { // Unmount var destroy = effect.destroy; effect.destroy = undefined; if (destroy !== undefined) { { if ((flags & Insertion) !== NoFlags$1) { setIsRunningInsertionEffect(true); } } safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); { if ((flags & Insertion) !== NoFlags$1) { setIsRunningInsertionEffect(false); } } } } effect = effect.next; } while (effect !== firstEffect); } } function commitHookEffectListMount(flags, finishedWork) { var updateQueue = finishedWork.updateQueue; var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; if (lastEffect !== null) { var firstEffect = lastEffect.next; var effect = firstEffect; do { if ((effect.tag & flags) === flags) { var create = effect.create; { if ((flags & Insertion) !== NoFlags$1) { setIsRunningInsertionEffect(true); } } effect.destroy = create(); { if ((flags & Insertion) !== NoFlags$1) { setIsRunningInsertionEffect(false); } } { var destroy = effect.destroy; if (destroy !== undefined && typeof destroy !== "function") { var hookName = void 0; if ((effect.tag & Layout) !== NoFlags) { hookName = "useLayoutEffect"; } else if ((effect.tag & Insertion) !== NoFlags) { hookName = "useInsertionEffect"; } else { hookName = "useEffect"; } var addendum = void 0; if (destroy === null) { addendum = " You returned null. If your effect does not require clean " + "up, return undefined (or nothing)."; } else if (typeof destroy.then === "function") { addendum = "\n\nIt looks like you wrote " + hookName + "(async () => ...) or returned a Promise. " + "Instead, write the async function inside your effect " + "and call it immediately:\n\n" + hookName + "(() => {\n" + " async function fetchData() {\n" + " // You can await here\n" + " const response = await MyAPI.getData(someId);\n" + " // ...\n" + " }\n" + " fetchData();\n" + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + "Learn more about data fetching with Hooks: https://reactjs.org/link/hooks-data-fetching"; } else { addendum = " You returned: " + destroy; } error( "%s must not return anything besides a function, " + "which is used for clean-up.%s", hookName, addendum ); } } } effect = effect.next; } while (effect !== firstEffect); } } function commitPassiveEffectDurations(finishedRoot, finishedWork) { { // Only Profilers with work in their subtree will have an Update effect scheduled. if ((finishedWork.flags & Update) !== NoFlags) { switch (finishedWork.tag) { case Profiler: { var passiveEffectDuration = finishedWork.stateNode.passiveEffectDuration; var _finishedWork$memoize = finishedWork.memoizedProps, id = _finishedWork$memoize.id, onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. // It does not get reset until the start of the next commit phase. var commitTime = getCommitTime(); var phase = finishedWork.alternate === null ? "mount" : "update"; { if (isCurrentUpdateNested()) { phase = "nested-update"; } } if (typeof onPostCommit === "function") { onPostCommit(id, phase, passiveEffectDuration, commitTime); } // Bubble times to the next nearest ancestor Profiler. // After we process that Profiler, we'll bubble further up. var parentFiber = finishedWork.return; outer: while (parentFiber !== null) { switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; root.passiveEffectDuration += passiveEffectDuration; break outer; case Profiler: var parentStateNode = parentFiber.stateNode; parentStateNode.passiveEffectDuration += passiveEffectDuration; break outer; } parentFiber = parentFiber.return; } break; } } } } } function commitLayoutEffectOnFiber( finishedRoot, current, finishedWork, committedLanes ) { if ((finishedWork.flags & LayoutMask) !== NoFlags) { switch (finishedWork.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { { // At this point layout effects have already been destroyed (during mutation phase). // This is done to prevent sibling component effects from interfering with each other, // e.g. a destroy function in one component should never override a ref set // by a create function in another component during the same commit. if (finishedWork.mode & ProfileMode) { try { startLayoutEffectTimer(); commitHookEffectListMount(Layout | HasEffect, finishedWork); } finally { recordLayoutEffectDuration(finishedWork); } } else { commitHookEffectListMount(Layout | HasEffect, finishedWork); } } break; } case ClassComponent: { var instance = finishedWork.stateNode; if (finishedWork.flags & Update) { { if (current === null) { // We could update instance props and state here, // but instead we rely on them being set during last render. // TODO: revisit this when we implement resuming. { if ( finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps ) { if (instance.props !== finishedWork.memoizedProps) { error( "Expected %s props to match memoized props before " + "componentDidMount. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.props`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } if (instance.state !== finishedWork.memoizedState) { error( "Expected %s state to match memoized state before " + "componentDidMount. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.state`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } } } if (finishedWork.mode & ProfileMode) { try { startLayoutEffectTimer(); instance.componentDidMount(); } finally { recordLayoutEffectDuration(finishedWork); } } else { instance.componentDidMount(); } } else { var prevProps = finishedWork.elementType === finishedWork.type ? current.memoizedProps : resolveDefaultProps( finishedWork.type, current.memoizedProps ); var prevState = current.memoizedState; // We could update instance props and state here, // but instead we rely on them being set during last render. // TODO: revisit this when we implement resuming. { if ( finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps ) { if (instance.props !== finishedWork.memoizedProps) { error( "Expected %s props to match memoized props before " + "componentDidUpdate. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.props`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } if (instance.state !== finishedWork.memoizedState) { error( "Expected %s state to match memoized state before " + "componentDidUpdate. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.state`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } } } if (finishedWork.mode & ProfileMode) { try { startLayoutEffectTimer(); instance.componentDidUpdate( prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate ); } finally { recordLayoutEffectDuration(finishedWork); } } else { instance.componentDidUpdate( prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate ); } } } } // TODO: I think this is now always non-null by the time it reaches the // commit phase. Consider removing the type check. var updateQueue = finishedWork.updateQueue; if (updateQueue !== null) { { if ( finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps ) { if (instance.props !== finishedWork.memoizedProps) { error( "Expected %s props to match memoized props before " + "processing the update queue. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.props`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } if (instance.state !== finishedWork.memoizedState) { error( "Expected %s state to match memoized state before " + "processing the update queue. " + "This might either be because of a bug in React, or because " + "a component reassigns its own `this.state`. " + "Please file an issue.", getComponentNameFromFiber(finishedWork) || "instance" ); } } } // We could update instance props and state here, // but instead we rely on them being set during last render. // TODO: revisit this when we implement resuming. commitUpdateQueue(finishedWork, updateQueue, instance); } break; } case HostRoot: { // TODO: I think this is now always non-null by the time it reaches the // commit phase. Consider removing the type check. var _updateQueue = finishedWork.updateQueue; if (_updateQueue !== null) { var _instance = null; if (finishedWork.child !== null) { switch (finishedWork.child.tag) { case HostComponent: _instance = getPublicInstance(finishedWork.child.stateNode); break; case ClassComponent: _instance = finishedWork.child.stateNode; break; } } commitUpdateQueue(finishedWork, _updateQueue, _instance); } break; } case HostComponent: { var _instance2 = finishedWork.stateNode; // Renderers may schedule work to be done after host components are mounted // (eg DOM renderer may schedule auto-focus for inputs and form controls). // These effects should only be committed when components are first mounted, // aka when there is no current/alternate. if (current === null && finishedWork.flags & Update) { var type = finishedWork.type; var props = finishedWork.memoizedProps; } break; } case HostText: { // We have no life-cycles associated with text. break; } case HostPortal: { // We have no life-cycles associated with portals. break; } case Profiler: { { var _finishedWork$memoize2 = finishedWork.memoizedProps, onCommit = _finishedWork$memoize2.onCommit, onRender = _finishedWork$memoize2.onRender; var effectDuration = finishedWork.stateNode.effectDuration; var commitTime = getCommitTime(); var phase = current === null ? "mount" : "update"; { if (isCurrentUpdateNested()) { phase = "nested-update"; } } if (typeof onRender === "function") { onRender( finishedWork.memoizedProps.id, phase, finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, commitTime ); } { if (typeof onCommit === "function") { onCommit( finishedWork.memoizedProps.id, phase, effectDuration, commitTime ); } // Schedule a passive effect for this Profiler to call onPostCommit hooks. // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, // because the effect is also where times bubble to parent Profilers. enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. // Do not reset these values until the next render so DevTools has a chance to read them first. var parentFiber = finishedWork.return; outer: while (parentFiber !== null) { switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; root.effectDuration += effectDuration; break outer; case Profiler: var parentStateNode = parentFiber.stateNode; parentStateNode.effectDuration += effectDuration; break outer; } parentFiber = parentFiber.return; } } } break; } case SuspenseComponent: { break; } case SuspenseListComponent: case IncompleteClassComponent: case ScopeComponent: case OffscreenComponent: case LegacyHiddenComponent: case TracingMarkerComponent: { break; } default: throw new Error( "This unit of work tag should not have side-effects. This error is " + "likely caused by a bug in React. Please file an issue." ); } } { { if (finishedWork.flags & Ref) { commitAttachRef(finishedWork); } } } } function hideOrUnhideAllChildren(finishedWork, isHidden) { // Only hide or unhide the top-most host nodes. var hostSubtreeRoot = null; { // We only have the top Fiber that was inserted but we need to recurse down its // children to find all the terminal nodes. var node = finishedWork; while (true) { if (node.tag === HostComponent) { if (hostSubtreeRoot === null) { hostSubtreeRoot = node; try { var instance = node.stateNode; if (isHidden) { hideInstance(instance); } else { unhideInstance(node.stateNode, node.memoizedProps); } } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } } } else if (node.tag === HostText) { if (hostSubtreeRoot === null) { try { var _instance3 = node.stateNode; if (isHidden) { hideTextInstance(_instance3); } else { unhideTextInstance(_instance3, node.memoizedProps); } } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } } } else if ( (node.tag === OffscreenComponent || node.tag === LegacyHiddenComponent) && node.memoizedState !== null && node !== finishedWork ); else if (node.child !== null) { node.child.return = node; node = node.child; continue; } if (node === finishedWork) { return; } while (node.sibling === null) { if (node.return === null || node.return === finishedWork) { return; } if (hostSubtreeRoot === node) { hostSubtreeRoot = null; } node = node.return; } if (hostSubtreeRoot === node) { hostSubtreeRoot = null; } node.sibling.return = node.return; node = node.sibling; } } } function commitAttachRef(finishedWork) { var ref = finishedWork.ref; if (ref !== null) { var instance = finishedWork.stateNode; var instanceToUse; switch (finishedWork.tag) { case HostComponent: instanceToUse = getPublicInstance(instance); break; default: instanceToUse = instance; } // Moved outside to ensure DCE works with this flag if (typeof ref === "function") { var retVal; if (finishedWork.mode & ProfileMode) { try { startLayoutEffectTimer(); retVal = ref(instanceToUse); } finally { recordLayoutEffectDuration(finishedWork); } } else { retVal = ref(instanceToUse); } { if (typeof retVal === "function") { error( "Unexpected return value from a callback ref in %s. " + "A callback ref should not return a function.", getComponentNameFromFiber(finishedWork) ); } } } else { { if (!ref.hasOwnProperty("current")) { error( "Unexpected ref object provided for %s. " + "Use either a ref-setter function or React.createRef().", getComponentNameFromFiber(finishedWork) ); } } ref.current = instanceToUse; } } } function detachFiberMutation(fiber) { // Cut off the return pointer to disconnect it from the tree. // This enables us to detect and warn against state updates on an unmounted component. // It also prevents events from bubbling from within disconnected components. // // Ideally, we should also clear the child pointer of the parent alternate to let this // get GC:ed but we don't know which for sure which parent is the current // one so we'll settle for GC:ing the subtree of this child. // This child itself will be GC:ed when the parent updates the next time. // // Note that we can't clear child or sibling pointers yet. // They're needed for passive effects and for findDOMNode. // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). // // Don't reset the alternate yet, either. We need that so we can detach the // alternate's fields in the passive phase. Clearing the return pointer is // sufficient for findDOMNode semantics. var alternate = fiber.alternate; if (alternate !== null) { alternate.return = null; } fiber.return = null; } function detachFiberAfterEffects(fiber) { var alternate = fiber.alternate; if (alternate !== null) { fiber.alternate = null; detachFiberAfterEffects(alternate); } // Note: Defensively using negation instead of < in case // `deletedTreeCleanUpLevel` is undefined. { // Clear cyclical Fiber fields. This level alone is designed to roughly // approximate the planned Fiber refactor. In that world, `setState` will be // bound to a special "instance" object instead of a Fiber. The Instance // object will not have any of these fields. It will only be connected to // the fiber tree via a single link at the root. So if this level alone is // sufficient to fix memory issues, that bodes well for our plans. fiber.child = null; fiber.deletions = null; fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host // tree, which has its own pointers to children, parents, and siblings. // The other host nodes also point back to fibers, so we should detach that // one, too. if (fiber.tag === HostComponent) { var hostInstance = fiber.stateNode; } fiber.stateNode = null; // I'm intentionally not clearing the `return` field in this level. We // already disconnect the `return` pointer at the root of the deleted // subtree (in `detachFiberMutation`). Besides, `return` by itself is not // cyclical — it's only cyclical when combined with `child`, `sibling`, and // `alternate`. But we'll clear it in the next level anyway, just in case. { fiber._debugOwner = null; } { // Theoretically, nothing in here should be necessary, because we already // disconnected the fiber from the tree. So even if something leaks this // particular fiber, it won't leak anything else // // The purpose of this branch is to be super aggressive so we can measure // if there's any difference in memory impact. If there is, that could // indicate a React leak we don't know about. fiber.return = null; fiber.dependencies = null; fiber.memoizedProps = null; fiber.memoizedState = null; fiber.pendingProps = null; fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. fiber.updateQueue = null; } } } function getHostParentFiber(fiber) { var parent = fiber.return; while (parent !== null) { if (isHostParent(parent)) { return parent; } parent = parent.return; } throw new Error( "Expected to find a host parent. This error is likely caused by a bug " + "in React. Please file an issue." ); } function isHostParent(fiber) { return ( fiber.tag === HostComponent || fiber.tag === HostRoot || fiber.tag === HostPortal ); } function getHostSibling(fiber) { // We're going to search forward into the tree until we find a sibling host // node. Unfortunately, if multiple insertions are done in a row we have to // search past them. This leads to exponential search for the next sibling. // TODO: Find a more efficient way to do this. var node = fiber; siblings: while (true) { // If we didn't find anything, let's try the next sibling. while (node.sibling === null) { if (node.return === null || isHostParent(node.return)) { // If we pop out of the root or hit the parent the fiber we are the // last sibling. return null; } node = node.return; } node.sibling.return = node.return; node = node.sibling; while ( node.tag !== HostComponent && node.tag !== HostText && node.tag !== DehydratedFragment ) { // If it is not host node and, we might have a host node inside it. // Try to search down until we find one. if (node.flags & Placement) { // If we don't have a child, try the siblings instead. continue siblings; } // If we don't have a child, try the siblings instead. // We also skip portals because they are not part of this host tree. if (node.child === null || node.tag === HostPortal) { continue siblings; } else { node.child.return = node; node = node.child; } } // Check if this host node is stable or about to be placed. if (!(node.flags & Placement)) { // Found it! return node.stateNode; } } } function commitPlacement(finishedWork) { var parentFiber = getHostParentFiber(finishedWork); // Note: these two variables *must* always be updated together. switch (parentFiber.tag) { case HostComponent: { var parent = parentFiber.stateNode; if (parentFiber.flags & ContentReset) { parentFiber.flags &= ~ContentReset; } var before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its // children to find all the terminal nodes. insertOrAppendPlacementNode(finishedWork, before, parent); break; } case HostRoot: case HostPortal: { var _parent = parentFiber.stateNode.containerInfo; var _before = getHostSibling(finishedWork); insertOrAppendPlacementNodeIntoContainer(finishedWork, _before, _parent); break; } // eslint-disable-next-line-no-fallthrough default: throw new Error( "Invalid host parent fiber. This error is likely caused by a bug " + "in React. Please file an issue." ); } } function insertOrAppendPlacementNodeIntoContainer(node, before, parent) { var tag = node.tag; var isHost = tag === HostComponent || tag === HostText; if (isHost) { var stateNode = node.stateNode; if (before) { insertInContainerBefore(parent); } else { appendChildToContainer(parent, stateNode); } } else if (tag === HostPortal); else { var child = node.child; if (child !== null) { insertOrAppendPlacementNodeIntoContainer(child, before, parent); var sibling = child.sibling; while (sibling !== null) { insertOrAppendPlacementNodeIntoContainer(sibling, before, parent); sibling = sibling.sibling; } } } } function insertOrAppendPlacementNode(node, before, parent) { var tag = node.tag; var isHost = tag === HostComponent || tag === HostText; if (isHost) { var stateNode = node.stateNode; if (before) { insertBefore(parent, stateNode, before); } else { appendChild(parent, stateNode); } } else if (tag === HostPortal); else { var child = node.child; if (child !== null) { insertOrAppendPlacementNode(child, before, parent); var sibling = child.sibling; while (sibling !== null) { insertOrAppendPlacementNode(sibling, before, parent); sibling = sibling.sibling; } } } } // These are tracked on the stack as we recursively traverse a // deleted subtree. // TODO: Update these during the whole mutation phase, not just during // a deletion. var hostParent = null; var hostParentIsContainer = false; function commitDeletionEffects(root, returnFiber, deletedFiber) { { // We only have the top Fiber that was deleted but we need to recurse down its // children to find all the terminal nodes. // Recursively delete all host nodes from the parent, detach refs, clean // up mounted layout effects, and call componentWillUnmount. // We only need to remove the topmost host child in each branch. But then we // still need to keep traversing to unmount effects, refs, and cWU. TODO: We // could split this into two separate traversals functions, where the second // one doesn't include any removeChild logic. This is maybe the same // function as "disappearLayoutEffects" (or whatever that turns into after // the layout phase is refactored to use recursion). // Before starting, find the nearest host parent on the stack so we know // which instance/container to remove the children from. // TODO: Instead of searching up the fiber return path on every deletion, we // can track the nearest host component on the JS stack as we traverse the // tree during the commit phase. This would make insertions faster, too. var parent = returnFiber; findParent: while (parent !== null) { switch (parent.tag) { case HostComponent: { hostParent = parent.stateNode; hostParentIsContainer = false; break findParent; } case HostRoot: { hostParent = parent.stateNode.containerInfo; hostParentIsContainer = true; break findParent; } case HostPortal: { hostParent = parent.stateNode.containerInfo; hostParentIsContainer = true; break findParent; } } parent = parent.return; } if (hostParent === null) { throw new Error( "Expected to find a host parent. This error is likely caused by " + "a bug in React. Please file an issue." ); } commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); hostParent = null; hostParentIsContainer = false; } detachFiberMutation(deletedFiber); } function recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, parent ) { // TODO: Use a static flag to skip trees that don't have unmount effects var child = parent.child; while (child !== null) { commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, child); child = child.sibling; } } function commitDeletionEffectsOnFiber( finishedRoot, nearestMountedAncestor, deletedFiber ) { onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse // into their subtree. There are simpler cases in the inner switch // that don't modify the stack. switch (deletedFiber.tag) { case HostComponent: { { safelyDetachRef(deletedFiber, nearestMountedAncestor); } // Intentional fallthrough to next branch } // eslint-disable-next-line-no-fallthrough case HostText: { // We only need to remove the nearest host child. Set the host parent // to `null` on the stack to indicate that nested children don't // need to be removed. { var prevHostParent = hostParent; var prevHostParentIsContainer = hostParentIsContainer; hostParent = null; recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); hostParent = prevHostParent; hostParentIsContainer = prevHostParentIsContainer; if (hostParent !== null) { // Now that all the child effects have unmounted, we can remove the // node from the tree. if (hostParentIsContainer) { removeChildFromContainer(hostParent, deletedFiber.stateNode); } else { removeChild(hostParent, deletedFiber.stateNode); } } } return; } case DehydratedFragment: { // Delete the dehydrated suspense boundary and all of its content. { if (hostParent !== null) { if (hostParentIsContainer) { clearSuspenseBoundaryFromContainer( hostParent, deletedFiber.stateNode ); } else { clearSuspenseBoundary(hostParent, deletedFiber.stateNode); } } } return; } case HostPortal: { { // When we go into a portal, it becomes the parent to remove from. var _prevHostParent = hostParent; var _prevHostParentIsContainer = hostParentIsContainer; hostParent = deletedFiber.stateNode.containerInfo; hostParentIsContainer = true; recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); hostParent = _prevHostParent; hostParentIsContainer = _prevHostParentIsContainer; } return; } case FunctionComponent: case ForwardRef: case MemoComponent: case SimpleMemoComponent: { { var updateQueue = deletedFiber.updateQueue; if (updateQueue !== null) { var lastEffect = updateQueue.lastEffect; if (lastEffect !== null) { var firstEffect = lastEffect.next; var effect = firstEffect; do { var _effect = effect, destroy = _effect.destroy, tag = _effect.tag; if (destroy !== undefined) { if ((tag & Insertion) !== NoFlags$1) { safelyCallDestroy( deletedFiber, nearestMountedAncestor, destroy ); } else if ((tag & Layout) !== NoFlags$1) { if (deletedFiber.mode & ProfileMode) { startLayoutEffectTimer(); safelyCallDestroy( deletedFiber, nearestMountedAncestor, destroy ); recordLayoutEffectDuration(deletedFiber); } else { safelyCallDestroy( deletedFiber, nearestMountedAncestor, destroy ); } } } effect = effect.next; } while (effect !== firstEffect); } } } recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); return; } case ClassComponent: { { safelyDetachRef(deletedFiber, nearestMountedAncestor); var instance = deletedFiber.stateNode; if (typeof instance.componentWillUnmount === "function") { safelyCallComponentWillUnmount( deletedFiber, nearestMountedAncestor, instance ); } } recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); return; } case ScopeComponent: { recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); return; } case OffscreenComponent: { { recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); } break; } default: { recursivelyTraverseDeletionEffects( finishedRoot, nearestMountedAncestor, deletedFiber ); return; } } } function commitSuspenseCallback(finishedWork) { // TODO: Move this to passive phase var newState = finishedWork.memoizedState; } function attachSuspenseRetryListeners(finishedWork) { // If this boundary just timed out, then it will have a set of wakeables. // For each wakeable, attach a listener so that when it resolves, React // attempts to re-render the boundary in the primary (pre-timeout) state. var wakeables = finishedWork.updateQueue; if (wakeables !== null) { finishedWork.updateQueue = null; var retryCache = finishedWork.stateNode; if (retryCache === null) { retryCache = finishedWork.stateNode = new PossiblyWeakSet(); } wakeables.forEach(function(wakeable) { // Memoize using the boundary fiber to prevent redundant listeners. var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); if (!retryCache.has(wakeable)) { retryCache.add(wakeable); { if (isDevToolsPresent) { if (inProgressLanes !== null && inProgressRoot !== null) { // If we have pending work still, associate the original updaters with it. restorePendingUpdaters(inProgressRoot, inProgressLanes); } else { throw Error( "Expected finished root and lanes to be set. This is a bug in React." ); } } } wakeable.then(retry, retry); } }); } } // This function detects when a Suspense boundary goes from visible to hidden. function commitMutationEffects(root, finishedWork, committedLanes) { inProgressLanes = committedLanes; inProgressRoot = root; setCurrentFiber(finishedWork); commitMutationEffectsOnFiber(finishedWork, root); setCurrentFiber(finishedWork); inProgressLanes = null; inProgressRoot = null; } function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { // Deletions effects can be scheduled on any fiber type. They need to happen // before the children effects hae fired. var deletions = parentFiber.deletions; if (deletions !== null) { for (var i = 0; i < deletions.length; i++) { var childToDelete = deletions[i]; try { commitDeletionEffects(root, parentFiber, childToDelete); } catch (error) { captureCommitPhaseError(childToDelete, parentFiber, error); } } } var prevDebugFiber = getCurrentFiber(); if (parentFiber.subtreeFlags & MutationMask) { var child = parentFiber.child; while (child !== null) { setCurrentFiber(child); commitMutationEffectsOnFiber(child, root); child = child.sibling; } } setCurrentFiber(prevDebugFiber); } function commitMutationEffectsOnFiber(finishedWork, root, lanes) { var current = finishedWork.alternate; var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, // because the fiber tag is more specific. An exception is any flag related // to reconcilation, because those can be set on all fiber types. switch (finishedWork.tag) { case FunctionComponent: case ForwardRef: case MemoComponent: case SimpleMemoComponent: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); if (flags & Update) { try { commitHookEffectListUnmount( Insertion | HasEffect, finishedWork, finishedWork.return ); commitHookEffectListMount(Insertion | HasEffect, finishedWork); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } // Layout effects are destroyed during the mutation phase so that all // destroy functions for all fibers are called before any create functions. // This prevents sibling component effects from interfering with each other, // e.g. a destroy function in one component should never override a ref set // by a create function in another component during the same commit. if (finishedWork.mode & ProfileMode) { try { startLayoutEffectTimer(); commitHookEffectListUnmount( Layout | HasEffect, finishedWork, finishedWork.return ); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } recordLayoutEffectDuration(finishedWork); } else { try { commitHookEffectListUnmount( Layout | HasEffect, finishedWork, finishedWork.return ); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } } } return; } case ClassComponent: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); if (flags & Ref) { if (current !== null) { safelyDetachRef(current, current.return); } } return; } case HostComponent: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); if (flags & Ref) { if (current !== null) { safelyDetachRef(current, current.return); } } { // TODO: ContentReset gets cleared by the children during the commit // phase. This is a refactor hazard because it means we must read // flags the flags after `commitReconciliationEffects` has already run; // the order matters. We should refactor so that ContentReset does not // rely on mutating the flag during commit. Like by setting a flag // during the render phase instead. if (finishedWork.flags & ContentReset) { var instance = finishedWork.stateNode; try { resetTextContent(instance); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } } if (flags & Update) { var _instance4 = finishedWork.stateNode; if (_instance4 != null) { // Commit the work prepared earlier. var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps // as the newProps. The updatePayload will contain the real change in // this case. var oldProps = current !== null ? current.memoizedProps : newProps; var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components. var updatePayload = finishedWork.updateQueue; finishedWork.updateQueue = null; if (updatePayload !== null) { try { commitUpdate( _instance4, updatePayload, type, oldProps, newProps, finishedWork ); } catch (error) { captureCommitPhaseError( finishedWork, finishedWork.return, error ); } } } } } return; } case HostText: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); if (flags & Update) { { if (finishedWork.stateNode === null) { throw new Error( "This should have a text node initialized. This error is likely " + "caused by a bug in React. Please file an issue." ); } var textInstance = finishedWork.stateNode; var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps // as the newProps. The updatePayload will contain the real change in // this case. var oldText = current !== null ? current.memoizedProps : newText; try { commitTextUpdate(textInstance, oldText, newText); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } } } return; } case HostRoot: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); return; } case HostPortal: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); return; } case SuspenseComponent: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); var offscreenFiber = finishedWork.child; if (offscreenFiber.flags & Visibility) { var offscreenInstance = offscreenFiber.stateNode; var newState = offscreenFiber.memoizedState; var isHidden = newState !== null; // Track the current state on the Offscreen instance so we can // read it during an event offscreenInstance.isHidden = isHidden; if (isHidden) { var wasHidden = offscreenFiber.alternate !== null && offscreenFiber.alternate.memoizedState !== null; if (!wasHidden) { // TODO: Move to passive phase markCommitTimeOfFallback(); } } } if (flags & Update) { try { commitSuspenseCallback(finishedWork); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } attachSuspenseRetryListeners(finishedWork); } return; } case OffscreenComponent: { var _wasHidden = current !== null && current.memoizedState !== null; { recursivelyTraverseMutationEffects(root, finishedWork); } commitReconciliationEffects(finishedWork); if (flags & Visibility) { var _offscreenInstance = finishedWork.stateNode; var _newState = finishedWork.memoizedState; var _isHidden = _newState !== null; var offscreenBoundary = finishedWork; // Track the current state on the Offscreen instance so we can // read it during an event _offscreenInstance.isHidden = _isHidden; { // TODO: This needs to run whenever there's an insertion or update // inside a hidden Offscreen tree. hideOrUnhideAllChildren(offscreenBoundary, _isHidden); } } return; } case SuspenseListComponent: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); if (flags & Update) { attachSuspenseRetryListeners(finishedWork); } return; } case ScopeComponent: { return; } default: { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); return; } } } function commitReconciliationEffects(finishedWork) { // Placement effects (insertions, reorders) can be scheduled on any fiber // type. They needs to happen after the children effects have fired, but // before the effects on this fiber have fired. var flags = finishedWork.flags; if (flags & Placement) { try { commitPlacement(finishedWork); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } // Clear the "placement" from effect tag so that we know that this is // inserted, before any life-cycles like componentDidMount gets called. // TODO: findDOMNode doesn't rely on this any more but isMounted does // and isMounted is deprecated anyway so we should be able to kill this. finishedWork.flags &= ~Placement; } if (flags & Hydrating) { finishedWork.flags &= ~Hydrating; } } function commitLayoutEffects(finishedWork, root, committedLanes) { inProgressLanes = committedLanes; inProgressRoot = root; nextEffect = finishedWork; commitLayoutEffects_begin(finishedWork, root, committedLanes); inProgressLanes = null; inProgressRoot = null; } function commitLayoutEffects_begin(subtreeRoot, root, committedLanes) { // Suspense layout effects semantics don't change for legacy roots. var isModernRoot = (subtreeRoot.mode & ConcurrentMode) !== NoMode; while (nextEffect !== null) { var fiber = nextEffect; var firstChild = fiber.child; if ((fiber.subtreeFlags & LayoutMask) !== NoFlags && firstChild !== null) { firstChild.return = fiber; nextEffect = firstChild; } else { commitLayoutMountEffects_complete(subtreeRoot, root, committedLanes); } } } function commitLayoutMountEffects_complete(subtreeRoot, root, committedLanes) { while (nextEffect !== null) { var fiber = nextEffect; if ((fiber.flags & LayoutMask) !== NoFlags) { var current = fiber.alternate; setCurrentFiber(fiber); try { commitLayoutEffectOnFiber(root, current, fiber, committedLanes); } catch (error) { captureCommitPhaseError(fiber, fiber.return, error); } resetCurrentFiber(); } if (fiber === subtreeRoot) { nextEffect = null; return; } var sibling = fiber.sibling; if (sibling !== null) { sibling.return = fiber.return; nextEffect = sibling; return; } nextEffect = fiber.return; } } function commitPassiveMountEffects( root, finishedWork, committedLanes, committedTransitions ) { nextEffect = finishedWork; commitPassiveMountEffects_begin( finishedWork, root, committedLanes, committedTransitions ); } function commitPassiveMountEffects_begin( subtreeRoot, root, committedLanes, committedTransitions ) { while (nextEffect !== null) { var fiber = nextEffect; var firstChild = fiber.child; if ((fiber.subtreeFlags & PassiveMask) !== NoFlags && firstChild !== null) { firstChild.return = fiber; nextEffect = firstChild; } else { commitPassiveMountEffects_complete( subtreeRoot, root, committedLanes, committedTransitions ); } } } function commitPassiveMountEffects_complete( subtreeRoot, root, committedLanes, committedTransitions ) { while (nextEffect !== null) { var fiber = nextEffect; if ((fiber.flags & Passive) !== NoFlags) { setCurrentFiber(fiber); try { commitPassiveMountOnFiber( root, fiber, committedLanes, committedTransitions ); } catch (error) { captureCommitPhaseError(fiber, fiber.return, error); } resetCurrentFiber(); } if (fiber === subtreeRoot) { nextEffect = null; return; } var sibling = fiber.sibling; if (sibling !== null) { sibling.return = fiber.return; nextEffect = sibling; return; } nextEffect = fiber.return; } } function commitPassiveMountOnFiber( finishedRoot, finishedWork, committedLanes, committedTransitions ) { switch (finishedWork.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { if (finishedWork.mode & ProfileMode) { startPassiveEffectTimer(); try { commitHookEffectListMount(Passive$1 | HasEffect, finishedWork); } finally { recordPassiveEffectDuration(finishedWork); } } else { commitHookEffectListMount(Passive$1 | HasEffect, finishedWork); } break; } } } function commitPassiveUnmountEffects(firstChild) { nextEffect = firstChild; commitPassiveUnmountEffects_begin(); } function commitPassiveUnmountEffects_begin() { while (nextEffect !== null) { var fiber = nextEffect; var child = fiber.child; if ((nextEffect.flags & ChildDeletion) !== NoFlags) { var deletions = fiber.deletions; if (deletions !== null) { for (var i = 0; i < deletions.length; i++) { var fiberToDelete = deletions[i]; nextEffect = fiberToDelete; commitPassiveUnmountEffectsInsideOfDeletedTree_begin( fiberToDelete, fiber ); } { // A fiber was deleted from this parent fiber, but it's still part of // the previous (alternate) parent fiber's list of children. Because // children are a linked list, an earlier sibling that's still alive // will be connected to the deleted fiber via its `alternate`: // // live fiber // --alternate--> previous live fiber // --sibling--> deleted fiber // // We can't disconnect `alternate` on nodes that haven't been deleted // yet, but we can disconnect the `sibling` and `child` pointers. var previousFiber = fiber.alternate; if (previousFiber !== null) { var detachedChild = previousFiber.child; if (detachedChild !== null) { previousFiber.child = null; do { var detachedSibling = detachedChild.sibling; detachedChild.sibling = null; detachedChild = detachedSibling; } while (detachedChild !== null); } } } nextEffect = fiber; } } if ((fiber.subtreeFlags & PassiveMask) !== NoFlags && child !== null) { child.return = fiber; nextEffect = child; } else { commitPassiveUnmountEffects_complete(); } } } function commitPassiveUnmountEffects_complete() { while (nextEffect !== null) { var fiber = nextEffect; if ((fiber.flags & Passive) !== NoFlags) { setCurrentFiber(fiber); commitPassiveUnmountOnFiber(fiber); resetCurrentFiber(); } var sibling = fiber.sibling; if (sibling !== null) { sibling.return = fiber.return; nextEffect = sibling; return; } nextEffect = fiber.return; } } function commitPassiveUnmountOnFiber(finishedWork) { switch (finishedWork.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { if (finishedWork.mode & ProfileMode) { startPassiveEffectTimer(); commitHookEffectListUnmount( Passive$1 | HasEffect, finishedWork, finishedWork.return ); recordPassiveEffectDuration(finishedWork); } else { commitHookEffectListUnmount( Passive$1 | HasEffect, finishedWork, finishedWork.return ); } break; } } } function commitPassiveUnmountEffectsInsideOfDeletedTree_begin( deletedSubtreeRoot, nearestMountedAncestor ) { while (nextEffect !== null) { var fiber = nextEffect; // Deletion effects fire in parent -> child order // TODO: Check if fiber has a PassiveStatic flag setCurrentFiber(fiber); commitPassiveUnmountInsideDeletedTreeOnFiber(fiber, nearestMountedAncestor); resetCurrentFiber(); var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. (But, if we // do this, still need to handle `deletedTreeCleanUpLevel` correctly.) if (child !== null) { child.return = fiber; nextEffect = child; } else { commitPassiveUnmountEffectsInsideOfDeletedTree_complete( deletedSubtreeRoot ); } } } function commitPassiveUnmountEffectsInsideOfDeletedTree_complete( deletedSubtreeRoot ) { while (nextEffect !== null) { var fiber = nextEffect; var sibling = fiber.sibling; var returnFiber = fiber.return; { // Recursively traverse the entire deleted tree and clean up fiber fields. // This is more aggressive than ideal, and the long term goal is to only // have to detach the deleted tree at the root. detachFiberAfterEffects(fiber); if (fiber === deletedSubtreeRoot) { nextEffect = null; return; } } if (sibling !== null) { sibling.return = returnFiber; nextEffect = sibling; return; } nextEffect = returnFiber; } } function commitPassiveUnmountInsideDeletedTreeOnFiber( current, nearestMountedAncestor ) { switch (current.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { if (current.mode & ProfileMode) { startPassiveEffectTimer(); commitHookEffectListUnmount(Passive$1, current, nearestMountedAncestor); recordPassiveEffectDuration(current); } else { commitHookEffectListUnmount(Passive$1, current, nearestMountedAncestor); } break; } } } // TODO: Reuse reappearLayoutEffects traversal here? var COMPONENT_TYPE = 0; var HAS_PSEUDO_CLASS_TYPE = 1; var ROLE_TYPE = 2; var TEST_NAME_TYPE = 3; var TEXT_TYPE = 4; if (typeof Symbol === "function" && Symbol.for) { var symbolFor = Symbol.for; COMPONENT_TYPE = symbolFor("selector.component"); HAS_PSEUDO_CLASS_TYPE = symbolFor("selector.has_pseudo_class"); ROLE_TYPE = symbolFor("selector.role"); TEST_NAME_TYPE = symbolFor("selector.test_id"); TEXT_TYPE = symbolFor("selector.text"); } var ReactCurrentActQueue = ReactSharedInternals.ReactCurrentActQueue; function isLegacyActEnvironment(fiber) { { // Legacy mode. We preserve the behavior of React 17's act. It assumes an // act environment whenever `jest` is defined, but you can still turn off // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly // to false. var isReactActEnvironmentGlobal = // $FlowExpectedError – Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" ? IS_REACT_ACT_ENVIRONMENT : undefined; // $FlowExpectedError - Flow doesn't know about jest var jestIsDefined = typeof jest !== "undefined"; return jestIsDefined && isReactActEnvironmentGlobal !== false; } } function isConcurrentActEnvironment() { { var isReactActEnvironmentGlobal = // $FlowExpectedError – Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" ? IS_REACT_ACT_ENVIRONMENT : undefined; if (!isReactActEnvironmentGlobal && ReactCurrentActQueue.current !== null) { // TODO: Include link to relevant documentation page. error( "The current testing environment is not configured to support " + "act(...)" ); } return isReactActEnvironmentGlobal; } } var ceil = Math.ceil; var ReactCurrentDispatcher$2 = ReactSharedInternals.ReactCurrentDispatcher, ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner, ReactCurrentBatchConfig$2 = ReactSharedInternals.ReactCurrentBatchConfig, ReactCurrentActQueue$1 = ReactSharedInternals.ReactCurrentActQueue; var NoContext = /* */ 0; var BatchedContext = /* */ 1; var RenderContext = /* */ 2; var CommitContext = /* */ 4; var RootInProgress = 0; var RootFatalErrored = 1; var RootErrored = 2; var RootSuspended = 3; var RootSuspendedWithDelay = 4; var RootCompleted = 5; var RootDidNotComplete = 6; // Describes where we are in the React execution stack var executionContext = NoContext; // The root we're working on var workInProgressRoot = null; // The fiber we're working on var workInProgress = null; // The lanes we're rendering var workInProgressRootRenderLanes = NoLanes; // Stack that allows components to change the render lanes for its subtree // This is a superset of the lanes we started working on at the root. The only // case where it's different from `workInProgressRootRenderLanes` is when we // enter a subtree that is hidden and needs to be unhidden: Suspense and // Offscreen component. // // Most things in the work loop should deal with workInProgressRootRenderLanes. // Most things in begin/complete phases should deal with subtreeRenderLanes. var subtreeRenderLanes = NoLanes; var subtreeRenderLanesCursor = createCursor(NoLanes); // Whether to root completed, errored, suspended, etc. var workInProgressRootExitStatus = RootInProgress; // A fatal error, if one is thrown var workInProgressRootFatalError = null; // "Included" lanes refer to lanes that were worked on during this render. It's // slightly different than `renderLanes` because `renderLanes` can change as you // enter and exit an Offscreen tree. This value is the combination of all render // lanes for the entire render phase. var workInProgressRootIncludedLanes = NoLanes; // The work left over by components that were visited during this render. Only // includes unprocessed updates, not work in bailed out children. var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). var workInProgressRootPingedLanes = NoLanes; // Errors that are thrown during the render phase. var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. // We will log them once the tree commits. var workInProgressRootRecoverableErrors = null; // The most recent time we committed a fallback. This lets us ensure a train // model where we don't commit new loading states in too quick succession. var globalMostRecentFallbackTime = 0; var FALLBACK_THROTTLE_MS = 500; // The absolute time for when we should start giving up on rendering // more and prefer CPU suspense heuristics instead. var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU // suspense heuristics and opt out of rendering more content. var RENDER_TIMEOUT_MS = 500; var workInProgressTransitions = null; function resetRenderTimer() { workInProgressRootRenderTargetTime = now() + RENDER_TIMEOUT_MS; } function getRenderTargetTime() { return workInProgressRootRenderTargetTime; } var hasUncaughtError = false; var firstUncaughtError = null; var legacyErrorBoundariesThatAlreadyFailed = null; // Only used when enableProfilerNestedUpdateScheduledHook is true; var rootDoesHavePassiveEffects = false; var rootWithPendingPassiveEffects = null; var pendingPassiveEffectsLanes = NoLanes; var pendingPassiveProfilerEffects = []; var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates var NESTED_UPDATE_LIMIT = 50; var nestedUpdateCount = 0; var rootWithNestedUpdates = null; var isFlushingPassiveEffects = false; var didScheduleUpdateDuringPassiveEffects = false; var NESTED_PASSIVE_UPDATE_LIMIT = 50; var nestedPassiveUpdateCount = 0; var rootWithPassiveNestedUpdates = null; // If two updates are scheduled within the same event, we should treat their // event times as simultaneous, even if the actual clock time has advanced // between the first and second call. var currentEventTime = NoTimestamp; var currentEventTransitionLane = NoLanes; var isRunningInsertionEffect = false; function getWorkInProgressRoot() { return workInProgressRoot; } function requestEventTime() { if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { // We're inside React, so it's fine to read the actual time. return now(); } // We're not inside React, so we may be in the middle of a browser event. if (currentEventTime !== NoTimestamp) { // Use the same start time for all updates until we enter React again. return currentEventTime; } // This is the first update since React yielded. Compute a new start time. currentEventTime = now(); return currentEventTime; } function requestUpdateLane(fiber) { // Special cases var mode = fiber.mode; if ((mode & ConcurrentMode) === NoMode) { return SyncLane; } else if ( (executionContext & RenderContext) !== NoContext && workInProgressRootRenderLanes !== NoLanes ) { // This is a render phase update. These are not officially supported. The // old behavior is to give this the same "thread" (lanes) as // whatever is currently rendering. So if you call `setState` on a component // that happens later in the same render, it will flush. Ideally, we want to // remove the special case and treat them as if they came from an // interleaved event. Regardless, this pattern is not officially supported. // This behavior is only a fallback. The flag only exists until we can roll // out the setState warning, since existing code might accidentally rely on // the current behavior. return pickArbitraryLane(workInProgressRootRenderLanes); } var isTransition = requestCurrentTransition() !== NoTransition; if (isTransition) { if (ReactCurrentBatchConfig$2.transition !== null) { var transition = ReactCurrentBatchConfig$2.transition; if (!transition._updatedFibers) { transition._updatedFibers = new Set(); } transition._updatedFibers.add(fiber); } // The algorithm for assigning an update to a lane should be stable for all // updates at the same priority within the same event. To do this, the // inputs to the algorithm must be the same. // // The trick we use is to cache the first of each of these inputs within an // event. Then reset the cached values once we can be sure the event is // over. Our heuristic for that is whenever we enter a concurrent work loop. if (currentEventTransitionLane === NoLane) { // All transitions within the same event are assigned the same lane. currentEventTransitionLane = claimNextTransitionLane(); } return currentEventTransitionLane; } // Updates originating inside certain React methods, like flushSync, have // their priority set by tracking it with a context variable. // // The opaque type returned by the host config is internally a lane, so we can // use that directly. // TODO: Move this type conversion to the event priority module. var updateLane = getCurrentUpdatePriority(); if (updateLane !== NoLane) { return updateLane; } // This update originated outside React. Ask the host environment for an // appropriate priority, based on the type of event. // // The opaque type returned by the host config is internally a lane, so we can // use that directly. // TODO: Move this type conversion to the event priority module. var eventLane = getCurrentEventPriority(); return eventLane; } function requestRetryLane(fiber) { // This is a fork of `requestUpdateLane` designed specifically for Suspense // "retries" — a special update that attempts to flip a Suspense boundary // from its placeholder state to its primary/resolved state. // Special cases var mode = fiber.mode; if ((mode & ConcurrentMode) === NoMode) { return SyncLane; } return claimNextRetryLane(); } function scheduleUpdateOnFiber(root, fiber, lane, eventTime) { checkForNestedUpdates(); { if (isRunningInsertionEffect) { error("useInsertionEffect must not schedule updates."); } } { if (isFlushingPassiveEffects) { didScheduleUpdateDuringPassiveEffects = true; } } // Mark that the root has a pending update. markRootUpdated(root, lane, eventTime); if ( (executionContext & RenderContext) !== NoLanes && root === workInProgressRoot ) { // This update was dispatched during the render phase. This is a mistake // if the update originates from user space (with the exception of local // hook updates, which are handled differently and don't reach this // function), but there are some internal React features that use this as // an implementation detail, like selective hydration. warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase } else { // This is a normal update, scheduled from outside the render phase. For // example, during an input event. { if (isDevToolsPresent) { addFiberToLanesMap(root, fiber, lane); } } warnIfUpdatesNotWrappedWithActDEV(fiber); if (root === workInProgressRoot) { // Received an update to a tree that's in the middle of rendering. Mark // that there was an interleaved update work on this root. Unless the // `deferRenderPhaseUpdateToNextBatch` flag is off and this is a render // phase update. In that case, we don't treat render phase updates as if // they were interleaved, for backwards compat reasons. if ((executionContext & RenderContext) === NoContext) { workInProgressRootInterleavedUpdatedLanes = mergeLanes( workInProgressRootInterleavedUpdatedLanes, lane ); } if (workInProgressRootExitStatus === RootSuspendedWithDelay) { // The root already suspended with a delay, which means this render // definitely won't finish. Since we have a new update, let's mark it as // suspended now, right before marking the incoming update. This has the // effect of interrupting the current render and switching to the update. // TODO: Make sure this doesn't override pings that happen while we've // already started rendering. markRootSuspended$1(root, workInProgressRootRenderLanes); } } ensureRootIsScheduled(root, eventTime); if ( lane === SyncLane && executionContext === NoContext && (fiber.mode & ConcurrentMode) === NoMode && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. !ReactCurrentActQueue$1.isBatchingLegacy ) { // Flush the synchronous work now, unless we're already working or inside // a batch. This is intentionally inside scheduleUpdateOnFiber instead of // scheduleCallbackForFiber to preserve the ability to schedule a callback // without immediately flushing it. We only do this for user-initiated // updates, to preserve historical behavior of legacy mode. resetRenderTimer(); flushSyncCallbacksOnlyInLegacyMode(); } } } function isUnsafeClassRenderPhaseUpdate(fiber) { // Check if this is a render phase update. Only called by class components, // which special (deprecated) behavior for UNSAFE_componentWillReceive props. return ( // TODO: Remove outdated deferRenderPhaseUpdateToNextBatch experiment. We // decided not to enable it. (executionContext & RenderContext) !== NoContext ); } // Use this function to schedule a task for a root. There's only one task per // root; if a task was already scheduled, we'll check to make sure the priority // of the existing task is the same as the priority of the next level that the // root has work on. This function is called on every update, and right before // exiting a task. function ensureRootIsScheduled(root, currentTime) { var existingCallbackNode = root.callbackNode; // Check if any lanes are being starved by other work. If so, mark them as // expired so we know to work on those next. markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. var nextLanes = getNextLanes( root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes ); if (nextLanes === NoLanes) { // Special case: There's nothing to work on. if (existingCallbackNode !== null) { cancelCallback$1(existingCallbackNode); } root.callbackNode = null; root.callbackPriority = NoLane; return; } // We use the highest priority lane to represent the priority of the callback. var newCallbackPriority = getHighestPriorityLane(nextLanes); // Check if there's an existing task. We may be able to reuse it. var existingCallbackPriority = root.callbackPriority; if ( existingCallbackPriority === newCallbackPriority && // Special case related to `act`. If the currently scheduled task is a // Scheduler task, rather than an `act` task, cancel it and re-scheduled // on the `act` queue. !( ReactCurrentActQueue$1.current !== null && existingCallbackNode !== fakeActCallbackNode ) ) { { // If we're going to re-use an existing task, it needs to exist. // Assume that discrete update microtasks are non-cancellable and null. // TODO: Temporary until we confirm this warning is not fired. if ( existingCallbackNode == null && existingCallbackPriority !== SyncLane ) { error( "Expected scheduled callback to exist. This error is likely caused by a bug in React. Please file an issue." ); } } // The priority hasn't changed. We can reuse the existing task. Exit. return; } if (existingCallbackNode != null) { // Cancel the existing callback. We'll schedule a new one below. cancelCallback$1(existingCallbackNode); } // Schedule a new callback. var newCallbackNode; if (newCallbackPriority === SyncLane) { // Special case: Sync React callbacks are scheduled on a special // internal queue if (root.tag === LegacyRoot) { if (ReactCurrentActQueue$1.isBatchingLegacy !== null) { ReactCurrentActQueue$1.didScheduleLegacyUpdate = true; } scheduleLegacySyncCallback(performSyncWorkOnRoot.bind(null, root)); } else { scheduleSyncCallback(performSyncWorkOnRoot.bind(null, root)); } { // Flush the queue in an Immediate task. scheduleCallback$1(ImmediatePriority, flushSyncCallbacks); } newCallbackNode = null; } else { var schedulerPriorityLevel; switch (lanesToEventPriority(nextLanes)) { case DiscreteEventPriority: schedulerPriorityLevel = ImmediatePriority; break; case ContinuousEventPriority: schedulerPriorityLevel = UserBlockingPriority; break; case DefaultEventPriority: schedulerPriorityLevel = NormalPriority; break; case IdleEventPriority: schedulerPriorityLevel = IdlePriority; break; default: schedulerPriorityLevel = NormalPriority; break; } newCallbackNode = scheduleCallback$1( schedulerPriorityLevel, performConcurrentWorkOnRoot.bind(null, root) ); } root.callbackPriority = newCallbackPriority; root.callbackNode = newCallbackNode; } // This is the entry point for every concurrent task, i.e. anything that // goes through Scheduler. function performConcurrentWorkOnRoot(root, didTimeout) { { resetNestedUpdateFlag(); } // Since we know we're in a React event, we can clear the current // event time. The next update will compute a new event time. currentEventTime = NoTimestamp; currentEventTransitionLane = NoLanes; if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { throw new Error("Should not already be working."); } // Flush any pending passive effects before deciding which lanes to work on, // in case they schedule additional work. var originalCallbackNode = root.callbackNode; var didFlushPassiveEffects = flushPassiveEffects(); if (didFlushPassiveEffects) { // Something in the passive effect phase may have canceled the current task. // Check if the task node for this root was changed. if (root.callbackNode !== originalCallbackNode) { // The current task was canceled. Exit. We don't need to call // `ensureRootIsScheduled` because the check above implies either that // there's a new task, or that there's no remaining work on this root. return null; } } // Determine the next lanes to work on, using the fields stored // on the root. var lanes = getNextLanes( root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes ); if (lanes === NoLanes) { // Defensive coding. This is never expected to happen. return null; } // We disable time-slicing in some cases: if the work has been CPU-bound // for too long ("expired" work, to prevent starvation), or we're in // sync-updates-by-default mode. // TODO: We only check `didTimeout` defensively, to account for a Scheduler // bug we're still investigating. Once the bug in Scheduler is fixed, // we can remove this, since we track expiration ourselves. var shouldTimeSlice = !includesBlockingLane(root, lanes) && !includesExpiredLane(root, lanes) && !didTimeout; var exitStatus = shouldTimeSlice ? renderRootConcurrent(root, lanes) : renderRootSync(root, lanes); if (exitStatus !== RootInProgress) { if (exitStatus === RootErrored) { // If something threw an error, try rendering one more time. We'll // render synchronously to block concurrent data mutations, and we'll // includes all pending updates are included. If it still fails after // the second attempt, we'll give up and commit the resulting tree. var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root); if (errorRetryLanes !== NoLanes) { lanes = errorRetryLanes; exitStatus = recoverFromConcurrentError(root, errorRetryLanes); } } if (exitStatus === RootFatalErrored) { var fatalError = workInProgressRootFatalError; prepareFreshStack(root, NoLanes); markRootSuspended$1(root, lanes); ensureRootIsScheduled(root, now()); throw fatalError; } if (exitStatus === RootDidNotComplete) { // The render unwound without completing the tree. This happens in special // cases where need to exit the current render without producing a // consistent tree or committing. // // This should only happen during a concurrent render, not a discrete or // synchronous update. We should have already checked for this when we // unwound the stack. markRootSuspended$1(root, lanes); } else { // The render completed. // Check if this render may have yielded to a concurrent event, and if so, // confirm that any newly rendered stores are consistent. // TODO: It's possible that even a concurrent render may never have yielded // to the main thread, if it was fast enough, or if it expired. We could // skip the consistency check in that case, too. var renderWasConcurrent = !includesBlockingLane(root, lanes); var finishedWork = root.current.alternate; if ( renderWasConcurrent && !isRenderConsistentWithExternalStores(finishedWork) ) { // A store was mutated in an interleaved event. Render again, // synchronously, to block further mutations. exitStatus = renderRootSync(root, lanes); // We need to check again if something threw if (exitStatus === RootErrored) { var _errorRetryLanes = getLanesToRetrySynchronouslyOnError(root); if (_errorRetryLanes !== NoLanes) { lanes = _errorRetryLanes; exitStatus = recoverFromConcurrentError(root, _errorRetryLanes); // We assume the tree is now consistent because we didn't yield to any // concurrent events. } } if (exitStatus === RootFatalErrored) { var _fatalError = workInProgressRootFatalError; prepareFreshStack(root, NoLanes); markRootSuspended$1(root, lanes); ensureRootIsScheduled(root, now()); throw _fatalError; } } // We now have a consistent tree. The next step is either to commit it, // or, if something suspended, wait to commit it after a timeout. root.finishedWork = finishedWork; root.finishedLanes = lanes; finishConcurrentRender(root, exitStatus, lanes); } } ensureRootIsScheduled(root, now()); if (root.callbackNode === originalCallbackNode) { // The task node scheduled for this root is the same one that's // currently executed. Need to return a continuation. return performConcurrentWorkOnRoot.bind(null, root); } return null; } function recoverFromConcurrentError(root, errorRetryLanes) { // If an error occurred during hydration, discard server response and fall // back to client side render. // Before rendering again, save the errors from the previous attempt. var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; if (isRootDehydrated(root)) { // The shell failed to hydrate. Set a flag to force a client rendering // during the next attempt. To do this, we call prepareFreshStack now // to create the root work-in-progress fiber. This is a bit weird in terms // of factoring, because it relies on renderRootSync not calling // prepareFreshStack again in the call below, which happens because the // root and lanes haven't changed. // // TODO: I think what we should do is set ForceClientRender inside // throwException, like we do for nested Suspense boundaries. The reason // it's here instead is so we can switch to the synchronous work loop, too. // Something to consider for a future refactor. var rootWorkInProgress = prepareFreshStack(root, errorRetryLanes); rootWorkInProgress.flags |= ForceClientRender; { errorHydratingContainer(root.containerInfo); } } var exitStatus = renderRootSync(root, errorRetryLanes); if (exitStatus !== RootErrored) { // Successfully finished rendering on retry // The errors from the failed first attempt have been recovered. Add // them to the collection of recoverable errors. We'll log them in the // commit phase. var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors // from the first attempt, to preserve the causal sequence. if (errorsFromSecondAttempt !== null) { queueRecoverableErrors(errorsFromSecondAttempt); } } return exitStatus; } function queueRecoverableErrors(errors) { if (workInProgressRootRecoverableErrors === null) { workInProgressRootRecoverableErrors = errors; } else { workInProgressRootRecoverableErrors.push.apply( workInProgressRootRecoverableErrors, errors ); } } function finishConcurrentRender(root, exitStatus, lanes) { switch (exitStatus) { case RootInProgress: case RootFatalErrored: { throw new Error("Root did not complete. This is a bug in React."); } // Flow knows about invariant, so it complains if I add a break // statement, but eslint doesn't know about invariant, so it complains // if I do. eslint-disable-next-line no-fallthrough case RootErrored: { // We should have already attempted to retry this tree. If we reached // this point, it errored again. Commit it. commitRoot( root, workInProgressRootRecoverableErrors, workInProgressTransitions ); break; } case RootSuspended: { markRootSuspended$1(root, lanes); // We have an acceptable loading state. We need to figure out if we // should immediately commit it or wait a bit. if ( includesOnlyRetries(lanes) && // do not delay if we're inside an act() scope !shouldForceFlushFallbacksInDEV() ) { // This render only included retries, no updates. Throttle committing // retries so that we don't show too many loading states too quickly. var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now(); // Don't bother with a very short suspense time. if (msUntilTimeout > 10) { var nextLanes = getNextLanes(root, NoLanes); if (nextLanes !== NoLanes) { // There's additional work on this root. break; } var suspendedLanes = root.suspendedLanes; if (!isSubsetOfLanes(suspendedLanes, lanes)) { // We should prefer to render the fallback of at the last // suspended level. Ping the last suspended level to try // rendering it again. // FIXME: What if the suspended lanes are Idle? Should not restart. var eventTime = requestEventTime(); markRootPinged(root, suspendedLanes); break; } // The render is suspended, it hasn't timed out, and there's no // lower priority work to do. Instead of committing the fallback // immediately, wait for more data to arrive. root.timeoutHandle = scheduleTimeout( commitRoot.bind( null, root, workInProgressRootRecoverableErrors, workInProgressTransitions ), msUntilTimeout ); break; } } // The work expired. Commit immediately. commitRoot( root, workInProgressRootRecoverableErrors, workInProgressTransitions ); break; } case RootSuspendedWithDelay: { markRootSuspended$1(root, lanes); if (includesOnlyTransitions(lanes)) { // This is a transition, so we should exit without committing a // placeholder and without scheduling a timeout. Delay indefinitely // until we receive more data. break; } if (!shouldForceFlushFallbacksInDEV()) { // This is not a transition, but we did trigger an avoided state. // Schedule a placeholder to display after a short delay, using the Just // Noticeable Difference. // TODO: Is the JND optimization worth the added complexity? If this is // the only reason we track the event time, then probably not. // Consider removing. var mostRecentEventTime = getMostRecentEventTime(root, lanes); var eventTimeMs = mostRecentEventTime; var timeElapsedMs = now() - eventTimeMs; var _msUntilTimeout = jnd(timeElapsedMs) - timeElapsedMs; // Don't bother with a very short suspense time. if (_msUntilTimeout > 10) { // Instead of committing the fallback immediately, wait for more data // to arrive. root.timeoutHandle = scheduleTimeout( commitRoot.bind( null, root, workInProgressRootRecoverableErrors, workInProgressTransitions ), _msUntilTimeout ); break; } } // Commit the placeholder. commitRoot( root, workInProgressRootRecoverableErrors, workInProgressTransitions ); break; } case RootCompleted: { // The work completed. Ready to commit. commitRoot( root, workInProgressRootRecoverableErrors, workInProgressTransitions ); break; } default: { throw new Error("Unknown root exit status."); } } } function isRenderConsistentWithExternalStores(finishedWork) { // Search the rendered tree for external store reads, and check whether the // stores were mutated in a concurrent event. Intentionally using an iterative // loop instead of recursion so we can exit early. var node = finishedWork; while (true) { if (node.flags & StoreConsistency) { var updateQueue = node.updateQueue; if (updateQueue !== null) { var checks = updateQueue.stores; if (checks !== null) { for (var i = 0; i < checks.length; i++) { var check = checks[i]; var getSnapshot = check.getSnapshot; var renderedValue = check.value; try { if (!objectIs(getSnapshot(), renderedValue)) { // Found an inconsistent store. return false; } } catch (error) { // If `getSnapshot` throws, return `false`. This will schedule // a re-render, and the error will be rethrown during render. return false; } } } } } var child = node.child; if (node.subtreeFlags & StoreConsistency && child !== null) { child.return = node; node = child; continue; } if (node === finishedWork) { return true; } while (node.sibling === null) { if (node.return === null || node.return === finishedWork) { return true; } node = node.return; } node.sibling.return = node.return; node = node.sibling; } // Flow doesn't know this is unreachable, but eslint does // eslint-disable-next-line no-unreachable return true; } function markRootSuspended$1(root, suspendedLanes) { // When suspending, we should always exclude lanes that were pinged or (more // rarely, since we try to avoid it) updated during the render phase. // TODO: Lol maybe there's a better way to factor this besides this // obnoxiously named function :) suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes); suspendedLanes = removeLanes( suspendedLanes, workInProgressRootInterleavedUpdatedLanes ); markRootSuspended(root, suspendedLanes); } // This is the entry point for synchronous tasks that don't go // through Scheduler function performSyncWorkOnRoot(root) { { syncNestedUpdateFlag(); } if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { throw new Error("Should not already be working."); } flushPassiveEffects(); var lanes = getNextLanes(root, NoLanes); if (!includesSomeLane(lanes, SyncLane)) { // There's no remaining sync work left. ensureRootIsScheduled(root, now()); return null; } var exitStatus = renderRootSync(root, lanes); if (root.tag !== LegacyRoot && exitStatus === RootErrored) { // If something threw an error, try rendering one more time. We'll render // synchronously to block concurrent data mutations, and we'll includes // all pending updates are included. If it still fails after the second // attempt, we'll give up and commit the resulting tree. var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root); if (errorRetryLanes !== NoLanes) { lanes = errorRetryLanes; exitStatus = recoverFromConcurrentError(root, errorRetryLanes); } } if (exitStatus === RootFatalErrored) { var fatalError = workInProgressRootFatalError; prepareFreshStack(root, NoLanes); markRootSuspended$1(root, lanes); ensureRootIsScheduled(root, now()); throw fatalError; } if (exitStatus === RootDidNotComplete) { throw new Error("Root did not complete. This is a bug in React."); } // We now have a consistent tree. Because this is a sync render, we // will commit it even if something suspended. var finishedWork = root.current.alternate; root.finishedWork = finishedWork; root.finishedLanes = lanes; commitRoot( root, workInProgressRootRecoverableErrors, workInProgressTransitions ); // Before exiting, make sure there's a callback scheduled for the next // pending level. ensureRootIsScheduled(root, now()); return null; } function batchedUpdates$1(fn, a) { var prevExecutionContext = executionContext; executionContext |= BatchedContext; try { return fn(a); } finally { executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer // most batchedUpdates-like method. if ( executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. !ReactCurrentActQueue$1.isBatchingLegacy ) { resetRenderTimer(); flushSyncCallbacksOnlyInLegacyMode(); } } } // Warning, this opts-out of checking the function body. // eslint-disable-next-line no-redeclare function flushSync(fn) { // In legacy mode, we flush pending passive effects at the beginning of the // next event, not at the end of the previous one. if ( rootWithPendingPassiveEffects !== null && rootWithPendingPassiveEffects.tag === LegacyRoot && (executionContext & (RenderContext | CommitContext)) === NoContext ) { flushPassiveEffects(); } var prevExecutionContext = executionContext; executionContext |= BatchedContext; var prevTransition = ReactCurrentBatchConfig$2.transition; var previousPriority = getCurrentUpdatePriority(); try { ReactCurrentBatchConfig$2.transition = null; setCurrentUpdatePriority(DiscreteEventPriority); if (fn) { return fn(); } else { return undefined; } } finally { setCurrentUpdatePriority(previousPriority); ReactCurrentBatchConfig$2.transition = prevTransition; executionContext = prevExecutionContext; // Flush the immediate callbacks that were scheduled during this batch. // Note that this will happen even if batchedUpdates is higher up // the stack. if ((executionContext & (RenderContext | CommitContext)) === NoContext) { flushSyncCallbacks(); } } } function pushRenderLanes(fiber, lanes) { push(subtreeRenderLanesCursor, subtreeRenderLanes, fiber); subtreeRenderLanes = mergeLanes(subtreeRenderLanes, lanes); workInProgressRootIncludedLanes = mergeLanes( workInProgressRootIncludedLanes, lanes ); } function popRenderLanes(fiber) { subtreeRenderLanes = subtreeRenderLanesCursor.current; pop(subtreeRenderLanesCursor, fiber); } function prepareFreshStack(root, lanes) { root.finishedWork = null; root.finishedLanes = NoLanes; var timeoutHandle = root.timeoutHandle; if (timeoutHandle !== noTimeout) { // The root previous suspended and scheduled a timeout to commit a fallback // state. Now that we have additional work, cancel the timeout. root.timeoutHandle = noTimeout; // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above cancelTimeout(timeoutHandle); } if (workInProgress !== null) { var interruptedWork = workInProgress.return; while (interruptedWork !== null) { var current = interruptedWork.alternate; unwindInterruptedWork(current, interruptedWork); interruptedWork = interruptedWork.return; } } workInProgressRoot = root; var rootWorkInProgress = createWorkInProgress(root.current, null); workInProgress = rootWorkInProgress; workInProgressRootRenderLanes = subtreeRenderLanes = workInProgressRootIncludedLanes = lanes; workInProgressRootExitStatus = RootInProgress; workInProgressRootFatalError = null; workInProgressRootSkippedLanes = NoLanes; workInProgressRootInterleavedUpdatedLanes = NoLanes; workInProgressRootPingedLanes = NoLanes; workInProgressRootConcurrentErrors = null; workInProgressRootRecoverableErrors = null; finishQueueingConcurrentUpdates(); { ReactStrictModeWarnings.discardPendingWarnings(); } return rootWorkInProgress; } function handleError(root, thrownValue) { do { var erroredWork = workInProgress; try { // Reset module-level state that was set during the render phase. resetContextDependencies(); resetHooksAfterThrow(); resetCurrentFiber(); // TODO: I found and added this missing line while investigating a // separate issue. Write a regression test using string refs. ReactCurrentOwner$2.current = null; if (erroredWork === null || erroredWork.return === null) { // Expected to be working on a non-root fiber. This is a fatal error // because there's no ancestor that can handle it; the root is // supposed to capture all errors that weren't caught by an error // boundary. workInProgressRootExitStatus = RootFatalErrored; workInProgressRootFatalError = thrownValue; // Set `workInProgress` to null. This represents advancing to the next // sibling, or the parent if there are no siblings. But since the root // has no siblings nor a parent, we set it to null. Usually this is // handled by `completeUnitOfWork` or `unwindWork`, but since we're // intentionally not calling those, we need set it here. // TODO: Consider calling `unwindWork` to pop the contexts. workInProgress = null; return; } if (enableProfilerTimer && erroredWork.mode & ProfileMode) { // Record the time spent rendering before an error was thrown. This // avoids inaccurate Profiler durations in the case of a // suspended render. stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); } if (enableSchedulingProfiler) { markComponentRenderStopped(); if ( thrownValue !== null && typeof thrownValue === "object" && typeof thrownValue.then === "function" ) { var wakeable = thrownValue; markComponentSuspended( erroredWork, wakeable, workInProgressRootRenderLanes ); } else { markComponentErrored( erroredWork, thrownValue, workInProgressRootRenderLanes ); } } throwException( root, erroredWork.return, erroredWork, thrownValue, workInProgressRootRenderLanes ); completeUnitOfWork(erroredWork); } catch (yetAnotherThrownValue) { // Something in the return path also threw. thrownValue = yetAnotherThrownValue; if (workInProgress === erroredWork && erroredWork !== null) { // If this boundary has already errored, then we had trouble processing // the error. Bubble it to the next boundary. erroredWork = erroredWork.return; workInProgress = erroredWork; } else { erroredWork = workInProgress; } continue; } // Return to the normal work loop. return; } while (true); } function pushDispatcher() { var prevDispatcher = ReactCurrentDispatcher$2.current; ReactCurrentDispatcher$2.current = ContextOnlyDispatcher; if (prevDispatcher === null) { // The React isomorphic package does not include a default dispatcher. // Instead the first renderer will lazily attach one, in order to give // nicer error messages. return ContextOnlyDispatcher; } else { return prevDispatcher; } } function popDispatcher(prevDispatcher) { ReactCurrentDispatcher$2.current = prevDispatcher; } function markCommitTimeOfFallback() { globalMostRecentFallbackTime = now(); } function markSkippedUpdateLanes(lane) { workInProgressRootSkippedLanes = mergeLanes( lane, workInProgressRootSkippedLanes ); } function renderDidSuspend() { if (workInProgressRootExitStatus === RootInProgress) { workInProgressRootExitStatus = RootSuspended; } } function renderDidSuspendDelayIfPossible() { if ( workInProgressRootExitStatus === RootInProgress || workInProgressRootExitStatus === RootSuspended || workInProgressRootExitStatus === RootErrored ) { workInProgressRootExitStatus = RootSuspendedWithDelay; } // Check if there are updates that we skipped tree that might have unblocked // this render. if ( workInProgressRoot !== null && (includesNonIdleWork(workInProgressRootSkippedLanes) || includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) ) { // Mark the current render as suspended so that we switch to working on // the updates that were skipped. Usually we only suspend at the end of // the render phase. // TODO: We should probably always mark the root as suspended immediately // (inside this function), since by suspending at the end of the render // phase introduces a potential mistake where we suspend lanes that were // pinged or updated while we were rendering. markRootSuspended$1(workInProgressRoot, workInProgressRootRenderLanes); } } function renderDidError(error) { if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { workInProgressRootExitStatus = RootErrored; } if (workInProgressRootConcurrentErrors === null) { workInProgressRootConcurrentErrors = [error]; } else { workInProgressRootConcurrentErrors.push(error); } } // Called during render to determine if anything has suspended. // Returns false if we're not sure. function renderHasNotSuspendedYet() { // If something errored or completed, we can't really be sure, // so those are false. return workInProgressRootExitStatus === RootInProgress; } function renderRootSync(root, lanes) { var prevExecutionContext = executionContext; executionContext |= RenderContext; var prevDispatcher = pushDispatcher(); // If the root or lanes have changed, throw out the existing stack // and prepare a fresh one. Otherwise we'll continue where we left off. if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { { if (isDevToolsPresent) { var memoizedUpdaters = root.memoizedUpdaters; if (memoizedUpdaters.size > 0) { restorePendingUpdaters(root, workInProgressRootRenderLanes); memoizedUpdaters.clear(); } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. // If we bailout on this work, we'll move them back (like above). // It's important to move them now in case the work spawns more work at the same priority with different updaters. // That way we can keep the current update and future updates separate. movePendingFibersToMemoized(root, lanes); } } workInProgressTransitions = getTransitionsForLanes(); prepareFreshStack(root, lanes); } do { try { workLoopSync(); break; } catch (thrownValue) { handleError(root, thrownValue); } } while (true); resetContextDependencies(); executionContext = prevExecutionContext; popDispatcher(prevDispatcher); if (workInProgress !== null) { // This is a sync render, so we should have finished the whole tree. throw new Error( "Cannot commit an incomplete root. This error is likely caused by a " + "bug in React. Please file an issue." ); } workInProgressRoot = null; workInProgressRootRenderLanes = NoLanes; return workInProgressRootExitStatus; } // The work loop is an extremely hot path. Tell Closure not to inline it. /** @noinline */ function workLoopSync() { // Already timed out, so perform work without checking if we need to yield. while (workInProgress !== null) { performUnitOfWork(workInProgress); } } function renderRootConcurrent(root, lanes) { var prevExecutionContext = executionContext; executionContext |= RenderContext; var prevDispatcher = pushDispatcher(); // If the root or lanes have changed, throw out the existing stack // and prepare a fresh one. Otherwise we'll continue where we left off. if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { { if (isDevToolsPresent) { var memoizedUpdaters = root.memoizedUpdaters; if (memoizedUpdaters.size > 0) { restorePendingUpdaters(root, workInProgressRootRenderLanes); memoizedUpdaters.clear(); } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. // If we bailout on this work, we'll move them back (like above). // It's important to move them now in case the work spawns more work at the same priority with different updaters. // That way we can keep the current update and future updates separate. movePendingFibersToMemoized(root, lanes); } } workInProgressTransitions = getTransitionsForLanes(); resetRenderTimer(); prepareFreshStack(root, lanes); } do { try { workLoopConcurrent(); break; } catch (thrownValue) { handleError(root, thrownValue); } } while (true); resetContextDependencies(); popDispatcher(prevDispatcher); executionContext = prevExecutionContext; if (workInProgress !== null) { return RootInProgress; } else { workInProgressRoot = null; workInProgressRootRenderLanes = NoLanes; // Return the final exit status. return workInProgressRootExitStatus; } } /** @noinline */ function workLoopConcurrent() { // Perform work until Scheduler asks us to yield while (workInProgress !== null && !shouldYield()) { performUnitOfWork(workInProgress); } } function performUnitOfWork(unitOfWork) { // The current, flushed, state of this fiber is the alternate. Ideally // nothing should rely on this, but relying on it here means that we don't // need an additional field on the work in progress. var current = unitOfWork.alternate; setCurrentFiber(unitOfWork); var next; if ((unitOfWork.mode & ProfileMode) !== NoMode) { startProfilerTimer(unitOfWork); next = beginWork$1(current, unitOfWork, subtreeRenderLanes); stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); } else { next = beginWork$1(current, unitOfWork, subtreeRenderLanes); } resetCurrentFiber(); unitOfWork.memoizedProps = unitOfWork.pendingProps; if (next === null) { // If this doesn't spawn new work, complete the current work. completeUnitOfWork(unitOfWork); } else { workInProgress = next; } ReactCurrentOwner$2.current = null; } function completeUnitOfWork(unitOfWork) { // Attempt to complete the current unit of work, then move to the next // sibling. If there are no more siblings, return to the parent fiber. var completedWork = unitOfWork; do { // The current, flushed, state of this fiber is the alternate. Ideally // nothing should rely on this, but relying on it here means that we don't // need an additional field on the work in progress. var current = completedWork.alternate; var returnFiber = completedWork.return; // Check if the work completed or if something threw. if ((completedWork.flags & Incomplete) === NoFlags) { setCurrentFiber(completedWork); var next = void 0; if ((completedWork.mode & ProfileMode) === NoMode) { next = completeWork(current, completedWork, subtreeRenderLanes); } else { startProfilerTimer(completedWork); next = completeWork(current, completedWork, subtreeRenderLanes); // Update render duration assuming we didn't error. stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); } resetCurrentFiber(); if (next !== null) { // Completing this fiber spawned new work. Work on that next. workInProgress = next; return; } } else { // This fiber did not complete because something threw. Pop values off // the stack without entering the complete phase. If this is a boundary, // capture values if possible. var _next = unwindWork(current, completedWork); // Because this fiber did not complete, don't reset its lanes. if (_next !== null) { // If completing this work spawned new work, do that next. We'll come // back here again. // Since we're restarting, remove anything that is not a host effect // from the effect tag. _next.flags &= HostEffectMask; workInProgress = _next; return; } if ((completedWork.mode & ProfileMode) !== NoMode) { // Record the render duration for the fiber that errored. stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); // Include the time spent working on failed children before continuing. var actualDuration = completedWork.actualDuration; var child = completedWork.child; while (child !== null) { actualDuration += child.actualDuration; child = child.sibling; } completedWork.actualDuration = actualDuration; } if (returnFiber !== null) { // Mark the parent fiber as incomplete and clear its subtree flags. returnFiber.flags |= Incomplete; returnFiber.subtreeFlags = NoFlags; returnFiber.deletions = null; } else { // We've unwound all the way to the root. workInProgressRootExitStatus = RootDidNotComplete; workInProgress = null; return; } } var siblingFiber = completedWork.sibling; if (siblingFiber !== null) { // If there is more work to do in this returnFiber, do that next. workInProgress = siblingFiber; return; } // Otherwise, return to the parent completedWork = returnFiber; // Update the next thing we're working on in case something throws. workInProgress = completedWork; } while (completedWork !== null); // We've reached the root. if (workInProgressRootExitStatus === RootInProgress) { workInProgressRootExitStatus = RootCompleted; } } function commitRoot(root, recoverableErrors, transitions) { // TODO: This no longer makes any sense. We already wrap the mutation and // layout phases. Should be able to remove. var previousUpdateLanePriority = getCurrentUpdatePriority(); var prevTransition = ReactCurrentBatchConfig$2.transition; try { ReactCurrentBatchConfig$2.transition = null; setCurrentUpdatePriority(DiscreteEventPriority); commitRootImpl( root, recoverableErrors, transitions, previousUpdateLanePriority ); } finally { ReactCurrentBatchConfig$2.transition = prevTransition; setCurrentUpdatePriority(previousUpdateLanePriority); } return null; } function commitRootImpl( root, recoverableErrors, transitions, renderPriorityLevel ) { do { // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which // means `flushPassiveEffects` will sometimes result in additional // passive effects. So we need to keep flushing in a loop until there are // no more pending effects. // TODO: Might be better if `flushPassiveEffects` did not automatically // flush synchronous work at the end, to avoid factoring hazards like this. flushPassiveEffects(); } while (rootWithPendingPassiveEffects !== null); flushRenderPhaseStrictModeWarningsInDEV(); if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { throw new Error("Should not already be working."); } var finishedWork = root.finishedWork; var lanes = root.finishedLanes; if (finishedWork === null) { return null; } else { { if (lanes === NoLanes) { error( "root.finishedLanes should not be empty during a commit. This is a " + "bug in React." ); } } } root.finishedWork = null; root.finishedLanes = NoLanes; if (finishedWork === root.current) { throw new Error( "Cannot commit the same tree as before. This error is likely caused by " + "a bug in React. Please file an issue." ); } // commitRoot never returns a continuation; it always finishes synchronously. // So we can clear these now to allow a new callback to be scheduled. root.callbackNode = null; root.callbackPriority = NoLane; // Update the first and last pending times on this root. The new first // pending time is whatever is left on the root fiber. var remainingLanes = mergeLanes(finishedWork.lanes, finishedWork.childLanes); markRootFinished(root, remainingLanes); if (root === workInProgressRoot) { // We can reset these now that they are finished. workInProgressRoot = null; workInProgress = null; workInProgressRootRenderLanes = NoLanes; } // If there are pending passive effects, schedule a callback to process them. // Do this as early as possible, so it is queued before anything else that // might get scheduled in the commit phase. (See #16714.) // TODO: Delete all other places that schedule the passive effect callback // They're redundant. if ( (finishedWork.subtreeFlags & PassiveMask) !== NoFlags || (finishedWork.flags & PassiveMask) !== NoFlags ) { if (!rootDoesHavePassiveEffects) { rootDoesHavePassiveEffects = true; // to store it in pendingPassiveTransitions until they get processed // We need to pass this through as an argument to commitRoot // because workInProgressTransitions might have changed between // the previous render and commit if we throttle the commit // with setTimeout pendingPassiveTransitions = transitions; scheduleCallback$1(NormalPriority, function() { flushPassiveEffects(); // This render triggered passive effects: release the root cache pool // *after* passive effects fire to avoid freeing a cache pool that may // be referenced by a node in the tree (HostRoot, Cache boundary etc) return null; }); } } // Check if there are any effects in the whole tree. // TODO: This is left over from the effect list implementation, where we had // to check for the existence of `firstEffect` to satisfy Flow. I think the // only other reason this optimization exists is because it affects profiling. // Reconsider whether this is necessary. var subtreeHasEffects = (finishedWork.subtreeFlags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags; var rootHasEffect = (finishedWork.flags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags; if (subtreeHasEffects || rootHasEffect) { var prevTransition = ReactCurrentBatchConfig$2.transition; ReactCurrentBatchConfig$2.transition = null; var previousPriority = getCurrentUpdatePriority(); setCurrentUpdatePriority(DiscreteEventPriority); var prevExecutionContext = executionContext; executionContext |= CommitContext; // Reset this to null before calling lifecycles ReactCurrentOwner$2.current = null; // The commit phase is broken into several sub-phases. We do a separate pass // of the effect list for each phase: all mutation effects come before all // layout effects, and so on. // The first phase a "before mutation" phase. We use this phase to read the // state of the host tree right before we mutate it. This is where // getSnapshotBeforeUpdate is called. var shouldFireAfterActiveInstanceBlur = commitBeforeMutationEffects( root, finishedWork ); { // Mark the current commit time to be shared by all Profilers in this // batch. This enables them to be grouped later. recordCommitTime(); } commitMutationEffects(root, finishedWork, lanes); resetAfterCommit(root.containerInfo); // The work-in-progress tree is now the current tree. This must come after // the mutation phase, so that the previous tree is still current during // componentWillUnmount, but before the layout phase, so that the finished // work is current during componentDidMount/Update. root.current = finishedWork; // The next phase is the layout phase, where we call effects that read commitLayoutEffects(finishedWork, root, lanes); // opportunity to paint. requestPaint(); executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. setCurrentUpdatePriority(previousPriority); ReactCurrentBatchConfig$2.transition = prevTransition; } else { // No effects. root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were // no effects. // TODO: Maybe there's a better way to report this. { recordCommitTime(); } } if (rootDoesHavePassiveEffects) { // This commit has passive effects. Stash a reference to them. But don't // schedule a callback until after flushing layout work. rootDoesHavePassiveEffects = false; rootWithPendingPassiveEffects = root; pendingPassiveEffectsLanes = lanes; } else { { nestedPassiveUpdateCount = 0; rootWithPassiveNestedUpdates = null; } } // Read this again, since an effect might have updated it remainingLanes = root.pendingLanes; // Check if there's remaining work on this root // TODO: This is part of the `componentDidCatch` implementation. Its purpose // is to detect whether something might have called setState inside // `componentDidCatch`. The mechanism is known to be flawed because `setState` // inside `componentDidCatch` is itself flawed — that's why we recommend // `getDerivedStateFromError` instead. However, it could be improved by // checking if remainingLanes includes Sync work, instead of whether there's // any work remaining at all (which would also include stuff like Suspense // retries or transitions). It's been like this for a while, though, so fixing // it probably isn't that urgent. if (remainingLanes === NoLanes) { // If there's no remaining work, we can clear the set of already failed // error boundaries. legacyErrorBoundariesThatAlreadyFailed = null; } onCommitRoot(finishedWork.stateNode, renderPriorityLevel); { if (isDevToolsPresent) { root.memoizedUpdaters.clear(); } } // additional work on this root is scheduled. ensureRootIsScheduled(root, now()); if (recoverableErrors !== null) { // There were errors during this render, but recovered from them without // needing to surface it to the UI. We log them here. var onRecoverableError = root.onRecoverableError; for (var i = 0; i < recoverableErrors.length; i++) { var recoverableError = recoverableErrors[i]; var componentStack = recoverableError.stack; var digest = recoverableError.digest; onRecoverableError(recoverableError.value, { componentStack: componentStack, digest: digest }); } } if (hasUncaughtError) { hasUncaughtError = false; var error$1 = firstUncaughtError; firstUncaughtError = null; throw error$1; } // If the passive effects are the result of a discrete render, flush them // synchronously at the end of the current task so that the result is // immediately observable. Otherwise, we assume that they are not // order-dependent and do not need to be observed by external systems, so we // can wait until after paint. // TODO: We can optimize this by not scheduling the callback earlier. Since we // currently schedule the callback in multiple places, will wait until those // are consolidated. if ( includesSomeLane(pendingPassiveEffectsLanes, SyncLane) && root.tag !== LegacyRoot ) { flushPassiveEffects(); } // Read this again, since a passive effect might have updated it remainingLanes = root.pendingLanes; if (includesSomeLane(remainingLanes, SyncLane)) { { markNestedUpdateScheduled(); } // Count the number of times the root synchronously re-renders without // finishing. If there are too many, it indicates an infinite update loop. if (root === rootWithNestedUpdates) { nestedUpdateCount++; } else { nestedUpdateCount = 0; rootWithNestedUpdates = root; } } else { nestedUpdateCount = 0; } // If layout work was scheduled, flush it now. flushSyncCallbacks(); return null; } function flushPassiveEffects() { // Returns whether passive effects were flushed. // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should // probably just combine the two functions. I believe they were only separate // in the first place because we used to wrap it with // `Scheduler.runWithPriority`, which accepts a function. But now we track the // priority within React itself, so we can mutate the variable directly. if (rootWithPendingPassiveEffects !== null) { var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); var priority = lowerEventPriority(DefaultEventPriority, renderPriority); var prevTransition = ReactCurrentBatchConfig$2.transition; var previousPriority = getCurrentUpdatePriority(); try { ReactCurrentBatchConfig$2.transition = null; setCurrentUpdatePriority(priority); return flushPassiveEffectsImpl(); } finally { setCurrentUpdatePriority(previousPriority); ReactCurrentBatchConfig$2.transition = prevTransition; // Once passive effects have run for the tree - giving components a } } return false; } function enqueuePendingPassiveProfilerEffect(fiber) { { pendingPassiveProfilerEffects.push(fiber); if (!rootDoesHavePassiveEffects) { rootDoesHavePassiveEffects = true; scheduleCallback$1(NormalPriority, function() { flushPassiveEffects(); return null; }); } } } function flushPassiveEffectsImpl() { if (rootWithPendingPassiveEffects === null) { return false; } // Cache and clear the transitions flag var transitions = pendingPassiveTransitions; pendingPassiveTransitions = null; var root = rootWithPendingPassiveEffects; var lanes = pendingPassiveEffectsLanes; rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. // Figure out why and fix it. It's not causing any known issues (probably // because it's only used for profiling), but it's a refactor hazard. pendingPassiveEffectsLanes = NoLanes; if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { throw new Error("Cannot flush passive effects while already rendering."); } { isFlushingPassiveEffects = true; didScheduleUpdateDuringPassiveEffects = false; } var prevExecutionContext = executionContext; executionContext |= CommitContext; commitPassiveUnmountEffects(root.current); commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects { var profilerEffects = pendingPassiveProfilerEffects; pendingPassiveProfilerEffects = []; for (var i = 0; i < profilerEffects.length; i++) { var _fiber = profilerEffects[i]; commitPassiveEffectDurations(root, _fiber); } } executionContext = prevExecutionContext; flushSyncCallbacks(); { // If additional passive effects were scheduled, increment a counter. If this // exceeds the limit, we'll fire a warning. if (didScheduleUpdateDuringPassiveEffects) { if (root === rootWithPassiveNestedUpdates) { nestedPassiveUpdateCount++; } else { nestedPassiveUpdateCount = 0; rootWithPassiveNestedUpdates = root; } } else { nestedPassiveUpdateCount = 0; } isFlushingPassiveEffects = false; didScheduleUpdateDuringPassiveEffects = false; } // TODO: Move to commitPassiveMountEffects onPostCommitRoot(root); { var stateNode = root.current.stateNode; stateNode.effectDuration = 0; stateNode.passiveEffectDuration = 0; } return true; } function isAlreadyFailedLegacyErrorBoundary(instance) { return ( legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance) ); } function markLegacyErrorBoundaryAsFailed(instance) { if (legacyErrorBoundariesThatAlreadyFailed === null) { legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); } else { legacyErrorBoundariesThatAlreadyFailed.add(instance); } } function prepareToThrowUncaughtError(error) { if (!hasUncaughtError) { hasUncaughtError = true; firstUncaughtError = error; } } var onUncaughtError = prepareToThrowUncaughtError; function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { var errorInfo = createCapturedValueAtFiber(error, sourceFiber); var update = createRootErrorUpdate(rootFiber, errorInfo, SyncLane); var root = enqueueUpdate(rootFiber, update, SyncLane); var eventTime = requestEventTime(); if (root !== null) { markRootUpdated(root, SyncLane, eventTime); ensureRootIsScheduled(root, eventTime); } } function captureCommitPhaseError(sourceFiber, nearestMountedAncestor, error$1) { { reportUncaughtErrorInDEV(error$1); setIsRunningInsertionEffect(false); } if (sourceFiber.tag === HostRoot) { // Error was thrown at the root. There is no parent, so the root // itself should capture it. captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); return; } var fiber = null; { fiber = sourceFiber.return; } while (fiber !== null) { if (fiber.tag === HostRoot) { captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); return; } else if (fiber.tag === ClassComponent) { var ctor = fiber.type; var instance = fiber.stateNode; if ( typeof ctor.getDerivedStateFromError === "function" || (typeof instance.componentDidCatch === "function" && !isAlreadyFailedLegacyErrorBoundary(instance)) ) { var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); var update = createClassErrorUpdate(fiber, errorInfo, SyncLane); var root = enqueueUpdate(fiber, update, SyncLane); var eventTime = requestEventTime(); if (root !== null) { markRootUpdated(root, SyncLane, eventTime); ensureRootIsScheduled(root, eventTime); } return; } } fiber = fiber.return; } { // TODO: Until we re-land skipUnmountedBoundaries (see #20147), this warning // will fire for errors that are thrown by destroy functions inside deleted // trees. What it should instead do is propagate the error to the parent of // the deleted tree. In the meantime, do not add this warning to the // allowlist; this is only for our internal use. error( "Internal React error: Attempted to capture a commit phase error " + "inside a detached tree. This indicates a bug in React. Likely " + "causes include deleting the same fiber more than once, committing an " + "already-finished tree, or an inconsistent return pointer.\n\n" + "Error message:\n\n%s", error$1 ); } } function pingSuspendedRoot(root, wakeable, pingedLanes) { var pingCache = root.pingCache; if (pingCache !== null) { // The wakeable resolved, so we no longer need to memoize, because it will // never be thrown again. pingCache.delete(wakeable); } var eventTime = requestEventTime(); markRootPinged(root, pingedLanes); warnIfSuspenseResolutionNotWrappedWithActDEV(root); if ( workInProgressRoot === root && isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes) ) { // Received a ping at the same priority level at which we're currently // rendering. We might want to restart this render. This should mirror // the logic of whether or not a root suspends once it completes. // TODO: If we're rendering sync either due to Sync, Batched or expired, // we should probably never restart. // If we're suspended with delay, or if it's a retry, we'll always suspend // so we can always restart. if ( workInProgressRootExitStatus === RootSuspendedWithDelay || (workInProgressRootExitStatus === RootSuspended && includesOnlyRetries(workInProgressRootRenderLanes) && now() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) ) { // Restart from the root. prepareFreshStack(root, NoLanes); } else { // Even though we can't restart right now, we might get an // opportunity later. So we mark this render as having a ping. workInProgressRootPingedLanes = mergeLanes( workInProgressRootPingedLanes, pingedLanes ); } } ensureRootIsScheduled(root, eventTime); } function retryTimedOutBoundary(boundaryFiber, retryLane) { // The boundary fiber (a Suspense component or SuspenseList component) // previously was rendered in its fallback state. One of the promises that // suspended it has resolved, which means at least part of the tree was // likely unblocked. Try rendering again, at a new lanes. if (retryLane === NoLane) { // TODO: Assign this to `suspenseState.retryLane`? to avoid // unnecessary entanglement? retryLane = requestRetryLane(boundaryFiber); } // TODO: Special case idle priority? var eventTime = requestEventTime(); var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); if (root !== null) { markRootUpdated(root, retryLane, eventTime); ensureRootIsScheduled(root, eventTime); } } function retryDehydratedSuspenseBoundary(boundaryFiber) { var suspenseState = boundaryFiber.memoizedState; var retryLane = NoLane; if (suspenseState !== null) { retryLane = suspenseState.retryLane; } retryTimedOutBoundary(boundaryFiber, retryLane); } function resolveRetryWakeable(boundaryFiber, wakeable) { var retryLane = NoLane; // Default var retryCache; switch (boundaryFiber.tag) { case SuspenseComponent: retryCache = boundaryFiber.stateNode; var suspenseState = boundaryFiber.memoizedState; if (suspenseState !== null) { retryLane = suspenseState.retryLane; } break; case SuspenseListComponent: retryCache = boundaryFiber.stateNode; break; default: throw new Error( "Pinged unknown suspense boundary type. " + "This is probably a bug in React." ); } if (retryCache !== null) { // The wakeable resolved, so we no longer need to memoize, because it will // never be thrown again. retryCache.delete(wakeable); } retryTimedOutBoundary(boundaryFiber, retryLane); } // Computes the next Just Noticeable Difference (JND) boundary. // The theory is that a person can't tell the difference between small differences in time. // Therefore, if we wait a bit longer than necessary that won't translate to a noticeable // difference in the experience. However, waiting for longer might mean that we can avoid // showing an intermediate loading state. The longer we have already waited, the harder it // is to tell small differences in time. Therefore, the longer we've already waited, // the longer we can wait additionally. At some point we have to give up though. // We pick a train model where the next boundary commits at a consistent schedule. // These particular numbers are vague estimates. We expect to adjust them based on research. function jnd(timeElapsed) { return timeElapsed < 120 ? 120 : timeElapsed < 480 ? 480 : timeElapsed < 1080 ? 1080 : timeElapsed < 1920 ? 1920 : timeElapsed < 3000 ? 3000 : timeElapsed < 4320 ? 4320 : ceil(timeElapsed / 1960) * 1960; } function checkForNestedUpdates() { if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { nestedUpdateCount = 0; rootWithNestedUpdates = null; throw new Error( "Maximum update depth exceeded. This can happen when a component " + "repeatedly calls setState inside componentWillUpdate or " + "componentDidUpdate. React limits the number of nested updates to " + "prevent infinite loops." ); } { if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { nestedPassiveUpdateCount = 0; rootWithPassiveNestedUpdates = null; error( "Maximum update depth exceeded. This can happen when a component " + "calls setState inside useEffect, but useEffect either doesn't " + "have a dependency array, or one of the dependencies changes on " + "every render." ); } } } function flushRenderPhaseStrictModeWarningsInDEV() { { ReactStrictModeWarnings.flushLegacyContextWarning(); { ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); } } } var didWarnStateUpdateForNotYetMountedComponent = null; function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { { if ((executionContext & RenderContext) !== NoContext) { // We let the other warning about render phase updates deal with this one. return; } if (!(fiber.mode & ConcurrentMode)) { return; } var tag = fiber.tag; if ( tag !== IndeterminateComponent && tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent ) { // Only warn for user-defined components, not internal ones like Suspense. return; } // We show the whole stack but dedupe on the top component's name because // the problematic code almost always lies inside that component. var componentName = getComponentNameFromFiber(fiber) || "ReactComponent"; if (didWarnStateUpdateForNotYetMountedComponent !== null) { if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { return; } didWarnStateUpdateForNotYetMountedComponent.add(componentName); } else { didWarnStateUpdateForNotYetMountedComponent = new Set([componentName]); } var previousFiber = current; try { setCurrentFiber(fiber); error( "Can't perform a React state update on a component that hasn't mounted yet. " + "This indicates that you have a side-effect in your render function that " + "asynchronously later calls tries to update the component. Move this work to " + "useEffect instead." ); } finally { if (previousFiber) { setCurrentFiber(fiber); } else { resetCurrentFiber(); } } } } var beginWork$1; { var dummyFiber = null; beginWork$1 = function(current, unitOfWork, lanes) { // If a component throws an error, we replay it again in a synchronously // dispatched event, so that the debugger will treat it as an uncaught // error See ReactErrorUtils for more information. // Before entering the begin phase, copy the work-in-progress onto a dummy // fiber. If beginWork throws, we'll use this to reset the state. var originalWorkInProgressCopy = assignFiberPropertiesInDEV( dummyFiber, unitOfWork ); try { return beginWork(current, unitOfWork, lanes); } catch (originalError) { if ( didSuspendOrErrorWhileHydratingDEV() || (originalError !== null && typeof originalError === "object" && typeof originalError.then === "function") ) { // Don't replay promises. // Don't replay errors if we are hydrating and have already suspended or handled an error throw originalError; } // Keep this code in sync with handleError; any changes here must have // corresponding changes there. resetContextDependencies(); resetHooksAfterThrow(); // Don't reset current debug fiber, since we're about to work on the // same fiber again. // Unwind the failed stack frame unwindInterruptedWork(current, unitOfWork); // Restore the original properties of the fiber. assignFiberPropertiesInDEV(unitOfWork, originalWorkInProgressCopy); if (unitOfWork.mode & ProfileMode) { // Reset the profiler timer. startProfilerTimer(unitOfWork); } // Run beginWork again. invokeGuardedCallback(null, beginWork, null, current, unitOfWork, lanes); if (hasCaughtError()) { var replayError = clearCaughtError(); if ( typeof replayError === "object" && replayError !== null && replayError._suppressLogging && typeof originalError === "object" && originalError !== null && !originalError._suppressLogging ) { // If suppressed, let the flag carry over to the original error which is the one we'll rethrow. originalError._suppressLogging = true; } } // We always throw the original error in case the second render pass is not idempotent. // This can happen if a memoized function or CommonJS module doesn't throw after first invocation. throw originalError; } }; } var didWarnAboutUpdateInRender = false; var didWarnAboutUpdateInRenderForAnotherComponent; { didWarnAboutUpdateInRenderForAnotherComponent = new Set(); } function warnAboutRenderPhaseUpdatesInDEV(fiber) { { if (isRendering && !getIsUpdatingOpaqueValueInRenderPhaseInDEV()) { switch (fiber.tag) { case FunctionComponent: case ForwardRef: case SimpleMemoComponent: { var renderingComponentName = (workInProgress && getComponentNameFromFiber(workInProgress)) || "Unknown"; // Dedupe by the rendering component because it's the one that needs to be fixed. var dedupeKey = renderingComponentName; if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) { didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); var setStateComponentName = getComponentNameFromFiber(fiber) || "Unknown"; error( "Cannot update a component (`%s`) while rendering a " + "different component (`%s`). To locate the bad setState() call inside `%s`, " + "follow the stack trace as described in https://reactjs.org/link/setstate-in-render", setStateComponentName, renderingComponentName, renderingComponentName ); } break; } case ClassComponent: { if (!didWarnAboutUpdateInRender) { error( "Cannot update during an existing state transition (such as " + "within `render`). Render methods should be a pure " + "function of props and state." ); didWarnAboutUpdateInRender = true; } break; } } } } } function restorePendingUpdaters(root, lanes) { { if (isDevToolsPresent) { var memoizedUpdaters = root.memoizedUpdaters; memoizedUpdaters.forEach(function(schedulingFiber) { addFiberToLanesMap(root, schedulingFiber, lanes); }); // This function intentionally does not clear memoized updaters. // Those may still be relevant to the current commit // and a future one (e.g. Suspense). } } } var fakeActCallbackNode = {}; function scheduleCallback$1(priorityLevel, callback) { { // If we're currently inside an `act` scope, bypass Scheduler and push to // the `act` queue instead. var actQueue = ReactCurrentActQueue$1.current; if (actQueue !== null) { actQueue.push(callback); return fakeActCallbackNode; } else { return scheduleCallback(priorityLevel, callback); } } } function cancelCallback$1(callbackNode) { if (callbackNode === fakeActCallbackNode) { return; } // In production, always call Scheduler. This function will be stripped out. return cancelCallback(callbackNode); } function shouldForceFlushFallbacksInDEV() { // Never force flush in production. This function should get stripped out. return ReactCurrentActQueue$1.current !== null; } function warnIfUpdatesNotWrappedWithActDEV(fiber) { { if (fiber.mode & ConcurrentMode) { if (!isConcurrentActEnvironment()) { // Not in an act environment. No need to warn. return; } } else { // Legacy mode has additional cases where we suppress a warning. if (!isLegacyActEnvironment()) { // Not in an act environment. No need to warn. return; } if (executionContext !== NoContext) { // Legacy mode doesn't warn if the update is batched, i.e. // batchedUpdates or flushSync. return; } if ( fiber.tag !== FunctionComponent && fiber.tag !== ForwardRef && fiber.tag !== SimpleMemoComponent ) { // For backwards compatibility with pre-hooks code, legacy mode only // warns for updates that originate from a hook. return; } } if (ReactCurrentActQueue$1.current === null) { var previousFiber = current; try { setCurrentFiber(fiber); error( "An update to %s inside a test was not wrapped in act(...).\n\n" + "When testing, code that causes React state updates should be " + "wrapped into act(...):\n\n" + "act(() => {\n" + " /* fire events that update state */\n" + "});\n" + "/* assert on the output */\n\n" + "This ensures that you're testing the behavior the user would see " + "in the browser." + " Learn more at https://reactjs.org/link/wrap-tests-with-act", getComponentNameFromFiber(fiber) ); } finally { if (previousFiber) { setCurrentFiber(fiber); } else { resetCurrentFiber(); } } } } } function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { { if ( root.tag !== LegacyRoot && isConcurrentActEnvironment() && ReactCurrentActQueue$1.current === null ) { error( "A suspended resource finished loading inside a test, but the event " + "was not wrapped in act(...).\n\n" + "When testing, code that resolves suspended data should be wrapped " + "into act(...):\n\n" + "act(() => {\n" + " /* finish loading suspended data */\n" + "});\n" + "/* assert on the output */\n\n" + "This ensures that you're testing the behavior the user would see " + "in the browser." + " Learn more at https://reactjs.org/link/wrap-tests-with-act" ); } } } function setIsRunningInsertionEffect(isRunning) { { isRunningInsertionEffect = isRunning; } } /* eslint-disable react-internal/prod-error-codes */ var resolveFamily = null; // $FlowFixMe Flow gets confused by a WeakSet feature check below. var failedBoundaries = null; var setRefreshHandler = function(handler) { { resolveFamily = handler; } }; function resolveFunctionForHotReloading(type) { { if (resolveFamily === null) { // Hot reloading is disabled. return type; } var family = resolveFamily(type); if (family === undefined) { return type; } // Use the latest known implementation. return family.current; } } function resolveClassForHotReloading(type) { // No implementation differences. return resolveFunctionForHotReloading(type); } function resolveForwardRefForHotReloading(type) { { if (resolveFamily === null) { // Hot reloading is disabled. return type; } var family = resolveFamily(type); if (family === undefined) { // Check if we're dealing with a real forwardRef. Don't want to crash early. if ( type !== null && type !== undefined && typeof type.render === "function" ) { // ForwardRef is special because its resolved .type is an object, // but it's possible that we only have its inner render function in the map. // If that inner render function is different, we'll build a new forwardRef type. var currentRender = resolveFunctionForHotReloading(type.render); if (type.render !== currentRender) { var syntheticType = { $$typeof: REACT_FORWARD_REF_TYPE, render: currentRender }; if (type.displayName !== undefined) { syntheticType.displayName = type.displayName; } return syntheticType; } } return type; } // Use the latest known implementation. return family.current; } } function isCompatibleFamilyForHotReloading(fiber, element) { { if (resolveFamily === null) { // Hot reloading is disabled. return false; } var prevType = fiber.elementType; var nextType = element.type; // If we got here, we know types aren't === equal. var needsCompareFamilies = false; var $$typeofNextType = typeof nextType === "object" && nextType !== null ? nextType.$$typeof : null; switch (fiber.tag) { case ClassComponent: { if (typeof nextType === "function") { needsCompareFamilies = true; } break; } case FunctionComponent: { if (typeof nextType === "function") { needsCompareFamilies = true; } else if ($$typeofNextType === REACT_LAZY_TYPE) { // We don't know the inner type yet. // We're going to assume that the lazy inner type is stable, // and so it is sufficient to avoid reconciling it away. // We're not going to unwrap or actually use the new lazy type. needsCompareFamilies = true; } break; } case ForwardRef: { if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { needsCompareFamilies = true; } else if ($$typeofNextType === REACT_LAZY_TYPE) { needsCompareFamilies = true; } break; } case MemoComponent: case SimpleMemoComponent: { if ($$typeofNextType === REACT_MEMO_TYPE) { // TODO: if it was but can no longer be simple, // we shouldn't set this. needsCompareFamilies = true; } else if ($$typeofNextType === REACT_LAZY_TYPE) { needsCompareFamilies = true; } break; } default: return false; } // Check if both types have a family and it's the same one. if (needsCompareFamilies) { // Note: memo() and forwardRef() we'll compare outer rather than inner type. // This means both of them need to be registered to preserve state. // If we unwrapped and compared the inner types for wrappers instead, // then we would risk falsely saying two separate memo(Foo) // calls are equivalent because they wrap the same Foo function. var prevFamily = resolveFamily(prevType); if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) { return true; } } return false; } } function markFailedErrorBoundaryForHotReloading(fiber) { { if (resolveFamily === null) { // Hot reloading is disabled. return; } if (typeof WeakSet !== "function") { return; } if (failedBoundaries === null) { failedBoundaries = new WeakSet(); } failedBoundaries.add(fiber); } } var scheduleRefresh = function(root, update) { { if (resolveFamily === null) { // Hot reloading is disabled. return; } var staleFamilies = update.staleFamilies, updatedFamilies = update.updatedFamilies; flushPassiveEffects(); flushSync(function() { scheduleFibersWithFamiliesRecursively( root.current, updatedFamilies, staleFamilies ); }); } }; var scheduleRoot = function(root, element) { { if (root.context !== emptyContextObject) { // Super edge case: root has a legacy _renderSubtree context // but we don't know the parentComponent so we can't pass it. // Just ignore. We'll delete this with _renderSubtree code path later. return; } flushPassiveEffects(); flushSync(function() { updateContainer(element, root, null, null); }); } }; function scheduleFibersWithFamiliesRecursively( fiber, updatedFamilies, staleFamilies ) { { var alternate = fiber.alternate, child = fiber.child, sibling = fiber.sibling, tag = fiber.tag, type = fiber.type; var candidateType = null; switch (tag) { case FunctionComponent: case SimpleMemoComponent: case ClassComponent: candidateType = type; break; case ForwardRef: candidateType = type.render; break; } if (resolveFamily === null) { throw new Error("Expected resolveFamily to be set during hot reload."); } var needsRender = false; var needsRemount = false; if (candidateType !== null) { var family = resolveFamily(candidateType); if (family !== undefined) { if (staleFamilies.has(family)) { needsRemount = true; } else if (updatedFamilies.has(family)) { if (tag === ClassComponent) { needsRemount = true; } else { needsRender = true; } } } } if (failedBoundaries !== null) { if ( failedBoundaries.has(fiber) || (alternate !== null && failedBoundaries.has(alternate)) ) { needsRemount = true; } } if (needsRemount) { fiber._debugNeedsRemount = true; } if (needsRemount || needsRender) { var _root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (_root !== null) { scheduleUpdateOnFiber(_root, fiber, SyncLane, NoTimestamp); } } if (child !== null && !needsRemount) { scheduleFibersWithFamiliesRecursively( child, updatedFamilies, staleFamilies ); } if (sibling !== null) { scheduleFibersWithFamiliesRecursively( sibling, updatedFamilies, staleFamilies ); } } } var findHostInstancesForRefresh = function(root, families) { { var hostInstances = new Set(); var types = new Set( families.map(function(family) { return family.current; }) ); findHostInstancesForMatchingFibersRecursively( root.current, types, hostInstances ); return hostInstances; } }; function findHostInstancesForMatchingFibersRecursively( fiber, types, hostInstances ) { { var child = fiber.child, sibling = fiber.sibling, tag = fiber.tag, type = fiber.type; var candidateType = null; switch (tag) { case FunctionComponent: case SimpleMemoComponent: case ClassComponent: candidateType = type; break; case ForwardRef: candidateType = type.render; break; } var didMatch = false; if (candidateType !== null) { if (types.has(candidateType)) { didMatch = true; } } if (didMatch) { // We have a match. This only drills down to the closest host components. // There's no need to search deeper because for the purpose of giving // visual feedback, "flashing" outermost parent rectangles is sufficient. findHostInstancesForFiberShallowly(fiber, hostInstances); } else { // If there's no match, maybe there will be one further down in the child tree. if (child !== null) { findHostInstancesForMatchingFibersRecursively( child, types, hostInstances ); } } if (sibling !== null) { findHostInstancesForMatchingFibersRecursively( sibling, types, hostInstances ); } } } function findHostInstancesForFiberShallowly(fiber, hostInstances) { { var foundHostInstances = findChildHostInstancesForFiberShallowly( fiber, hostInstances ); if (foundHostInstances) { return; } // If we didn't find any host children, fallback to closest host parent. var node = fiber; while (true) { switch (node.tag) { case HostComponent: hostInstances.add(node.stateNode); return; case HostPortal: hostInstances.add(node.stateNode.containerInfo); return; case HostRoot: hostInstances.add(node.stateNode.containerInfo); return; } if (node.return === null) { throw new Error("Expected to reach root first."); } node = node.return; } } } function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { { var node = fiber; var foundHostInstances = false; while (true) { if (node.tag === HostComponent) { // We got a match. foundHostInstances = true; hostInstances.add(node.stateNode); // There may still be more, so keep searching. } else if (node.child !== null) { node.child.return = node; node = node.child; continue; } if (node === fiber) { return foundHostInstances; } while (node.sibling === null) { if (node.return === null || node.return === fiber) { return foundHostInstances; } node = node.return; } node.sibling.return = node.return; node = node.sibling; } } return false; } var hasBadMapPolyfill; { hasBadMapPolyfill = false; try { var nonExtensibleObject = Object.preventExtensions({}); /* eslint-disable no-new */ new Map([[nonExtensibleObject, null]]); new Set([nonExtensibleObject]); /* eslint-enable no-new */ } catch (e) { // TODO: Consider warning about bad polyfills hasBadMapPolyfill = true; } } function FiberNode(tag, pendingProps, key, mode) { // Instance this.tag = tag; this.key = key; this.elementType = null; this.type = null; this.stateNode = null; // Fiber this.return = null; this.child = null; this.sibling = null; this.index = 0; this.ref = null; this.pendingProps = pendingProps; this.memoizedProps = null; this.updateQueue = null; this.memoizedState = null; this.dependencies = null; this.mode = mode; // Effects this.flags = NoFlags; this.subtreeFlags = NoFlags; this.deletions = null; this.lanes = NoLanes; this.childLanes = NoLanes; this.alternate = null; { // Note: The following is done to avoid a v8 performance cliff. // // Initializing the fields below to smis and later updating them with // double values will cause Fibers to end up having separate shapes. // This behavior/bug has something to do with Object.preventExtension(). // Fortunately this only impacts DEV builds. // Unfortunately it makes React unusably slow for some applications. // To work around this, initialize the fields below with doubles. // // Learn more about this here: // https://github.com/facebook/react/issues/14365 // https://bugs.chromium.org/p/v8/issues/detail?id=8538 this.actualDuration = Number.NaN; this.actualStartTime = Number.NaN; this.selfBaseDuration = Number.NaN; this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. // This won't trigger the performance cliff mentioned above, // and it simplifies other profiler code (including DevTools). this.actualDuration = 0; this.actualStartTime = -1; this.selfBaseDuration = 0; this.treeBaseDuration = 0; } { // This isn't directly used but is handy for debugging internals: this._debugSource = null; this._debugOwner = null; this._debugNeedsRemount = false; this._debugHookTypes = null; if (!hasBadMapPolyfill && typeof Object.preventExtensions === "function") { Object.preventExtensions(this); } } } // This is a constructor function, rather than a POJO constructor, still // please ensure we do the following: // 1) Nobody should add any instance methods on this. Instance methods can be // more difficult to predict when they get optimized and they are almost // never inlined properly in static compilers. // 2) Nobody should rely on `instanceof Fiber` for type testing. We should // always know when it is a fiber. // 3) We might want to experiment with using numeric keys since they are easier // to optimize in a non-JIT environment. // 4) We can easily go from a constructor to a createFiber object literal if that // is faster. // 5) It should be easy to port this to a C struct and keep a C implementation // compatible. var createFiber = function(tag, pendingProps, key, mode) { // $FlowFixMe: the shapes are exact here but Flow doesn't like constructors return new FiberNode(tag, pendingProps, key, mode); }; function shouldConstruct(Component) { var prototype = Component.prototype; return !!(prototype && prototype.isReactComponent); } function isSimpleFunctionComponent(type) { return ( typeof type === "function" && !shouldConstruct(type) && type.defaultProps === undefined ); } function resolveLazyComponentTag(Component) { if (typeof Component === "function") { return shouldConstruct(Component) ? ClassComponent : FunctionComponent; } else if (Component !== undefined && Component !== null) { var $$typeof = Component.$$typeof; if ($$typeof === REACT_FORWARD_REF_TYPE) { return ForwardRef; } if ($$typeof === REACT_MEMO_TYPE) { return MemoComponent; } } return IndeterminateComponent; } // This is used to create an alternate fiber to do work on. function createWorkInProgress(current, pendingProps) { var workInProgress = current.alternate; if (workInProgress === null) { // We use a double buffering pooling technique because we know that we'll // only ever need at most two versions of a tree. We pool the "other" unused // node that we're free to reuse. This is lazily created to avoid allocating // extra objects for things that are never updated. It also allow us to // reclaim the extra memory if needed. workInProgress = createFiber( current.tag, pendingProps, current.key, current.mode ); workInProgress.elementType = current.elementType; workInProgress.type = current.type; workInProgress.stateNode = current.stateNode; { // DEV-only fields workInProgress._debugSource = current._debugSource; workInProgress._debugOwner = current._debugOwner; workInProgress._debugHookTypes = current._debugHookTypes; } workInProgress.alternate = current; current.alternate = workInProgress; } else { workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. workInProgress.type = current.type; // We already have an alternate. // Reset the effect tag. workInProgress.flags = NoFlags; // The effects are no longer valid. workInProgress.subtreeFlags = NoFlags; workInProgress.deletions = null; { // We intentionally reset, rather than copy, actualDuration & actualStartTime. // This prevents time from endlessly accumulating in new commits. // This has the downside of resetting values for different priority renders, // But works for yielding (the common case) and should support resuming. workInProgress.actualDuration = 0; workInProgress.actualStartTime = -1; } } // Reset all effects except static ones. // Static effects are not specific to a render. workInProgress.flags = current.flags & StaticMask; workInProgress.childLanes = current.childLanes; workInProgress.lanes = current.lanes; workInProgress.child = current.child; workInProgress.memoizedProps = current.memoizedProps; workInProgress.memoizedState = current.memoizedState; workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so // it cannot be shared with the current fiber. var currentDependencies = current.dependencies; workInProgress.dependencies = currentDependencies === null ? null : { lanes: currentDependencies.lanes, firstContext: currentDependencies.firstContext }; // These will be overridden during the parent's reconciliation workInProgress.sibling = current.sibling; workInProgress.index = current.index; workInProgress.ref = current.ref; { workInProgress.selfBaseDuration = current.selfBaseDuration; workInProgress.treeBaseDuration = current.treeBaseDuration; } { workInProgress._debugNeedsRemount = current._debugNeedsRemount; switch (workInProgress.tag) { case IndeterminateComponent: case FunctionComponent: case SimpleMemoComponent: workInProgress.type = resolveFunctionForHotReloading(current.type); break; case ClassComponent: workInProgress.type = resolveClassForHotReloading(current.type); break; case ForwardRef: workInProgress.type = resolveForwardRefForHotReloading(current.type); break; } } return workInProgress; } // Used to reuse a Fiber for a second pass. function resetWorkInProgress(workInProgress, renderLanes) { // This resets the Fiber to what createFiber or createWorkInProgress would // have set the values to before during the first pass. Ideally this wouldn't // be necessary but unfortunately many code paths reads from the workInProgress // when they should be reading from current and writing to workInProgress. // We assume pendingProps, index, key, ref, return are still untouched to // avoid doing another reconciliation. // Reset the effect flags but keep any Placement tags, since that's something // that child fiber is setting, not the reconciliation. workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. var current = workInProgress.alternate; if (current === null) { // Reset to createFiber's initial values. workInProgress.childLanes = NoLanes; workInProgress.lanes = renderLanes; workInProgress.child = null; workInProgress.subtreeFlags = NoFlags; workInProgress.memoizedProps = null; workInProgress.memoizedState = null; workInProgress.updateQueue = null; workInProgress.dependencies = null; workInProgress.stateNode = null; { // Note: We don't reset the actualTime counts. It's useful to accumulate // actual time across multiple render passes. workInProgress.selfBaseDuration = 0; workInProgress.treeBaseDuration = 0; } } else { // Reset to the cloned values that createWorkInProgress would've. workInProgress.childLanes = current.childLanes; workInProgress.lanes = current.lanes; workInProgress.child = current.child; workInProgress.subtreeFlags = NoFlags; workInProgress.deletions = null; workInProgress.memoizedProps = current.memoizedProps; workInProgress.memoizedState = current.memoizedState; workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so // it cannot be shared with the current fiber. var currentDependencies = current.dependencies; workInProgress.dependencies = currentDependencies === null ? null : { lanes: currentDependencies.lanes, firstContext: currentDependencies.firstContext }; { // Note: We don't reset the actualTime counts. It's useful to accumulate // actual time across multiple render passes. workInProgress.selfBaseDuration = current.selfBaseDuration; workInProgress.treeBaseDuration = current.treeBaseDuration; } } return workInProgress; } function createHostRootFiber( tag, isStrictMode, concurrentUpdatesByDefaultOverride ) { var mode; if (tag === ConcurrentRoot) { mode = ConcurrentMode; if (isStrictMode === true) { mode |= StrictLegacyMode; } } else { mode = NoMode; } if (isDevToolsPresent) { // Always collect profile timings when DevTools are present. // This enables DevTools to start capturing timing at any point– // Without some nodes in the tree having empty base times. mode |= ProfileMode; } return createFiber(HostRoot, null, null, mode); } function createFiberFromTypeAndProps( type, // React$ElementType key, pendingProps, owner, mode, lanes ) { var fiberTag = IndeterminateComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. var resolvedType = type; if (typeof type === "function") { if (shouldConstruct(type)) { fiberTag = ClassComponent; { resolvedType = resolveClassForHotReloading(resolvedType); } } else { { resolvedType = resolveFunctionForHotReloading(resolvedType); } } } else if (typeof type === "string") { fiberTag = HostComponent; } else { getTag: switch (type) { case REACT_FRAGMENT_TYPE: return createFiberFromFragment(pendingProps.children, mode, lanes, key); case REACT_STRICT_MODE_TYPE: fiberTag = Mode; mode |= StrictLegacyMode; break; case REACT_PROFILER_TYPE: return createFiberFromProfiler(pendingProps, mode, lanes, key); case REACT_SUSPENSE_TYPE: return createFiberFromSuspense(pendingProps, mode, lanes, key); case REACT_SUSPENSE_LIST_TYPE: return createFiberFromSuspenseList(pendingProps, mode, lanes, key); case REACT_OFFSCREEN_TYPE: return createFiberFromOffscreen(pendingProps, mode, lanes, key); case REACT_LEGACY_HIDDEN_TYPE: // eslint-disable-next-line no-fallthrough case REACT_SCOPE_TYPE: // eslint-disable-next-line no-fallthrough case REACT_CACHE_TYPE: // eslint-disable-next-line no-fallthrough case REACT_TRACING_MARKER_TYPE: // eslint-disable-next-line no-fallthrough case REACT_DEBUG_TRACING_MODE_TYPE: // eslint-disable-next-line no-fallthrough default: { if (typeof type === "object" && type !== null) { switch (type.$$typeof) { case REACT_PROVIDER_TYPE: fiberTag = ContextProvider; break getTag; case REACT_CONTEXT_TYPE: // This is a consumer fiberTag = ContextConsumer; break getTag; case REACT_FORWARD_REF_TYPE: fiberTag = ForwardRef; { resolvedType = resolveForwardRefForHotReloading(resolvedType); } break getTag; case REACT_MEMO_TYPE: fiberTag = MemoComponent; break getTag; case REACT_LAZY_TYPE: fiberTag = LazyComponent; resolvedType = null; break getTag; } } var info = ""; { if ( type === undefined || (typeof type === "object" && type !== null && Object.keys(type).length === 0) ) { info += " You likely forgot to export your component from the file " + "it's defined in, or you might have mixed up default and " + "named imports."; } var ownerName = owner ? getComponentNameFromFiber(owner) : null; if (ownerName) { info += "\n\nCheck the render method of `" + ownerName + "`."; } } throw new Error( "Element type is invalid: expected a string (for built-in " + "components) or a class/function (for composite components) " + ("but got: " + (type == null ? type : typeof type) + "." + info) ); } } } var fiber = createFiber(fiberTag, pendingProps, key, mode); fiber.elementType = type; fiber.type = resolvedType; fiber.lanes = lanes; { fiber._debugOwner = owner; } return fiber; } function createFiberFromElement(element, mode, lanes) { var owner = null; { owner = element._owner; } var type = element.type; var key = element.key; var pendingProps = element.props; var fiber = createFiberFromTypeAndProps( type, key, pendingProps, owner, mode, lanes ); { fiber._debugSource = element._source; fiber._debugOwner = element._owner; } return fiber; } function createFiberFromFragment(elements, mode, lanes, key) { var fiber = createFiber(Fragment, elements, key, mode); fiber.lanes = lanes; return fiber; } function createFiberFromProfiler(pendingProps, mode, lanes, key) { { if (typeof pendingProps.id !== "string") { error( 'Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', typeof pendingProps.id ); } } var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); fiber.elementType = REACT_PROFILER_TYPE; fiber.lanes = lanes; { fiber.stateNode = { effectDuration: 0, passiveEffectDuration: 0 }; } return fiber; } function createFiberFromSuspense(pendingProps, mode, lanes, key) { var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); fiber.elementType = REACT_SUSPENSE_TYPE; fiber.lanes = lanes; return fiber; } function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); fiber.elementType = REACT_SUSPENSE_LIST_TYPE; fiber.lanes = lanes; return fiber; } function createFiberFromOffscreen(pendingProps, mode, lanes, key) { var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); fiber.elementType = REACT_OFFSCREEN_TYPE; fiber.lanes = lanes; var primaryChildInstance = { isHidden: false }; fiber.stateNode = primaryChildInstance; return fiber; } function createFiberFromText(content, mode, lanes) { var fiber = createFiber(HostText, content, null, mode); fiber.lanes = lanes; return fiber; } function createFiberFromPortal(portal, mode, lanes) { var pendingProps = portal.children !== null ? portal.children : []; var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); fiber.lanes = lanes; fiber.stateNode = { containerInfo: portal.containerInfo, pendingChildren: null, // Used by persistent updates implementation: portal.implementation }; return fiber; } // Used for stashing WIP properties to replay failed work in DEV. function assignFiberPropertiesInDEV(target, source) { if (target === null) { // This Fiber's initial properties will always be overwritten. // We only use a Fiber to ensure the same hidden class so DEV isn't slow. target = createFiber(IndeterminateComponent, null, null, NoMode); } // This is intentionally written as a list of all properties. // We tried to use Object.assign() instead but this is called in // the hottest path, and Object.assign() was too slow: // https://github.com/facebook/react/issues/12502 // This code is DEV-only so size is not a concern. target.tag = source.tag; target.key = source.key; target.elementType = source.elementType; target.type = source.type; target.stateNode = source.stateNode; target.return = source.return; target.child = source.child; target.sibling = source.sibling; target.index = source.index; target.ref = source.ref; target.pendingProps = source.pendingProps; target.memoizedProps = source.memoizedProps; target.updateQueue = source.updateQueue; target.memoizedState = source.memoizedState; target.dependencies = source.dependencies; target.mode = source.mode; target.flags = source.flags; target.subtreeFlags = source.subtreeFlags; target.deletions = source.deletions; target.lanes = source.lanes; target.childLanes = source.childLanes; target.alternate = source.alternate; { target.actualDuration = source.actualDuration; target.actualStartTime = source.actualStartTime; target.selfBaseDuration = source.selfBaseDuration; target.treeBaseDuration = source.treeBaseDuration; } target._debugSource = source._debugSource; target._debugOwner = source._debugOwner; target._debugNeedsRemount = source._debugNeedsRemount; target._debugHookTypes = source._debugHookTypes; return target; } function FiberRootNode( containerInfo, tag, hydrate, identifierPrefix, onRecoverableError ) { this.tag = tag; this.containerInfo = containerInfo; this.pendingChildren = null; this.current = null; this.pingCache = null; this.finishedWork = null; this.timeoutHandle = noTimeout; this.context = null; this.pendingContext = null; this.callbackNode = null; this.callbackPriority = NoLane; this.eventTimes = createLaneMap(NoLanes); this.expirationTimes = createLaneMap(NoTimestamp); this.pendingLanes = NoLanes; this.suspendedLanes = NoLanes; this.pingedLanes = NoLanes; this.expiredLanes = NoLanes; this.mutableReadLanes = NoLanes; this.finishedLanes = NoLanes; this.entangledLanes = NoLanes; this.entanglements = createLaneMap(NoLanes); this.identifierPrefix = identifierPrefix; this.onRecoverableError = onRecoverableError; { this.effectDuration = 0; this.passiveEffectDuration = 0; } { this.memoizedUpdaters = new Set(); var pendingUpdatersLaneMap = (this.pendingUpdatersLaneMap = []); for (var _i = 0; _i < TotalLanes; _i++) { pendingUpdatersLaneMap.push(new Set()); } } { switch (tag) { case ConcurrentRoot: this._debugRootType = hydrate ? "hydrateRoot()" : "createRoot()"; break; case LegacyRoot: this._debugRootType = hydrate ? "hydrate()" : "render()"; break; } } } function createFiberRoot( containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the // host config, but because they are passed in at runtime, we have to thread // them through the root constructor. Perhaps we should put them all into a // single type, like a DynamicHostConfig that is defined by the renderer. identifierPrefix, onRecoverableError, transitionCallbacks ) { var root = new FiberRootNode( containerInfo, tag, hydrate, identifierPrefix, onRecoverableError ); // stateNode is any. var uninitializedFiber = createHostRootFiber(tag, isStrictMode); root.current = uninitializedFiber; uninitializedFiber.stateNode = root; { var _initialState = { element: initialChildren, isDehydrated: hydrate, cache: null, // not enabled yet transitions: null, pendingSuspenseBoundaries: null }; uninitializedFiber.memoizedState = _initialState; } initializeUpdateQueue(uninitializedFiber); return root; } var ReactVersion = "18.2.0-next-9e3b772b8-20220608"; function createPortal( children, containerInfo, // TODO: figure out the API for cross-renderer implementation. implementation ) { var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null; { checkKeyStringCoercion(key); } return { // This tag allow us to uniquely identify this as a React Portal $$typeof: REACT_PORTAL_TYPE, key: key == null ? null : "" + key, children: children, containerInfo: containerInfo, implementation: implementation }; } var didWarnAboutNestedUpdates; var didWarnAboutFindNodeInStrictMode; { didWarnAboutNestedUpdates = false; didWarnAboutFindNodeInStrictMode = {}; } function getContextForSubtree(parentComponent) { if (!parentComponent) { return emptyContextObject; } var fiber = get(parentComponent); var parentContext = findCurrentUnmaskedContext(fiber); if (fiber.tag === ClassComponent) { var Component = fiber.type; if (isContextProvider(Component)) { return processChildContext(fiber, Component, parentContext); } } return parentContext; } function findHostInstanceWithWarning(component, methodName) { { var fiber = get(component); if (fiber === undefined) { if (typeof component.render === "function") { throw new Error("Unable to find node on an unmounted component."); } else { var keys = Object.keys(component).join(","); throw new Error( "Argument appears to not be a ReactComponent. Keys: " + keys ); } } var hostFiber = findCurrentHostFiber(fiber); if (hostFiber === null) { return null; } if (hostFiber.mode & StrictLegacyMode) { var componentName = getComponentNameFromFiber(fiber) || "Component"; if (!didWarnAboutFindNodeInStrictMode[componentName]) { didWarnAboutFindNodeInStrictMode[componentName] = true; var previousFiber = current; try { setCurrentFiber(hostFiber); if (fiber.mode & StrictLegacyMode) { error( "%s is deprecated in StrictMode. " + "%s was passed an instance of %s which is inside StrictMode. " + "Instead, add a ref directly to the element you want to reference. " + "Learn more about using refs safely here: " + "https://reactjs.org/link/strict-mode-find-node", methodName, methodName, componentName ); } else { error( "%s is deprecated in StrictMode. " + "%s was passed an instance of %s which renders StrictMode children. " + "Instead, add a ref directly to the element you want to reference. " + "Learn more about using refs safely here: " + "https://reactjs.org/link/strict-mode-find-node", methodName, methodName, componentName ); } } finally { // Ideally this should reset to previous but this shouldn't be called in // render and there's another warning for that anyway. if (previousFiber) { setCurrentFiber(previousFiber); } else { resetCurrentFiber(); } } } } return hostFiber.stateNode; } } function createContainer( containerInfo, tag, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onRecoverableError, transitionCallbacks ) { var hydrate = false; var initialChildren = null; return createFiberRoot( containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onRecoverableError ); } function updateContainer(element, container, parentComponent, callback) { { onScheduleRoot(container, element); } var current$1 = container.current; var eventTime = requestEventTime(); var lane = requestUpdateLane(current$1); var context = getContextForSubtree(parentComponent); if (container.context === null) { container.context = context; } else { container.pendingContext = context; } { if (isRendering && current !== null && !didWarnAboutNestedUpdates) { didWarnAboutNestedUpdates = true; error( "Render methods should be a pure function of props and state; " + "triggering nested component updates from render is not allowed. " + "If necessary, trigger nested updates in componentDidUpdate.\n\n" + "Check the render method of %s.", getComponentNameFromFiber(current) || "Unknown" ); } } var update = createUpdate(eventTime, lane); // Caution: React DevTools currently depends on this property // being called "element". update.payload = { element: element }; callback = callback === undefined ? null : callback; if (callback !== null) { { if (typeof callback !== "function") { error( "render(...): Expected the last optional `callback` argument to be a " + "function. Instead received: %s.", callback ); } } update.callback = callback; } var root = enqueueUpdate(current$1, update, lane); if (root !== null) { scheduleUpdateOnFiber(root, current$1, lane, eventTime); entangleTransitions(root, current$1, lane); } return lane; } function getPublicRootInstance(container) { var containerFiber = container.current; if (!containerFiber.child) { return null; } switch (containerFiber.child.tag) { case HostComponent: return getPublicInstance(containerFiber.child.stateNode); default: return containerFiber.child.stateNode; } } var shouldErrorImpl = function(fiber) { return null; }; function shouldError(fiber) { return shouldErrorImpl(fiber); } var shouldSuspendImpl = function(fiber) { return false; }; function shouldSuspend(fiber) { return shouldSuspendImpl(fiber); } var overrideHookState = null; var overrideHookStateDeletePath = null; var overrideHookStateRenamePath = null; var overrideProps = null; var overridePropsDeletePath = null; var overridePropsRenamePath = null; var scheduleUpdate = null; var setErrorHandler = null; var setSuspenseHandler = null; { var copyWithDeleteImpl = function(obj, path, index) { var key = path[index]; var updated = isArray(obj) ? obj.slice() : assign({}, obj); if (index + 1 === path.length) { if (isArray(updated)) { updated.splice(key, 1); } else { delete updated[key]; } return updated; } // $FlowFixMe number or string is fine here updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); return updated; }; var copyWithDelete = function(obj, path) { return copyWithDeleteImpl(obj, path, 0); }; var copyWithRenameImpl = function(obj, oldPath, newPath, index) { var oldKey = oldPath[index]; var updated = isArray(obj) ? obj.slice() : assign({}, obj); if (index + 1 === oldPath.length) { var newKey = newPath[index]; // $FlowFixMe number or string is fine here updated[newKey] = updated[oldKey]; if (isArray(updated)) { updated.splice(oldKey, 1); } else { delete updated[oldKey]; } } else { // $FlowFixMe number or string is fine here updated[oldKey] = copyWithRenameImpl( // $FlowFixMe number or string is fine here obj[oldKey], oldPath, newPath, index + 1 ); } return updated; }; var copyWithRename = function(obj, oldPath, newPath) { if (oldPath.length !== newPath.length) { warn("copyWithRename() expects paths of the same length"); return; } else { for (var i = 0; i < newPath.length - 1; i++) { if (oldPath[i] !== newPath[i]) { warn( "copyWithRename() expects paths to be the same except for the deepest key" ); return; } } } return copyWithRenameImpl(obj, oldPath, newPath, 0); }; var copyWithSetImpl = function(obj, path, index, value) { if (index >= path.length) { return value; } var key = path[index]; var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe number or string is fine here updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); return updated; }; var copyWithSet = function(obj, path, value) { return copyWithSetImpl(obj, path, 0, value); }; var findHook = function(fiber, id) { // For now, the "id" of stateful hooks is just the stateful hook index. // This may change in the future with e.g. nested hooks. var currentHook = fiber.memoizedState; while (currentHook !== null && id > 0) { currentHook = currentHook.next; id--; } return currentHook; }; // Support DevTools editable values for useState and useReducer. overrideHookState = function(fiber, id, path, value) { var hook = findHook(fiber, id); if (hook !== null) { var newState = copyWithSet(hook.memoizedState, path, value); hook.memoizedState = newState; hook.baseState = newState; // We aren't actually adding an update to the queue, // because there is no update we can add for useReducer hooks that won't trigger an error. // (There's no appropriate action type for DevTools overrides.) // As a result though, React will see the scheduled update as a noop and bailout. // Shallow cloning props works as a workaround for now to bypass the bailout check. fiber.memoizedProps = assign({}, fiber.memoizedProps); var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } } }; overrideHookStateDeletePath = function(fiber, id, path) { var hook = findHook(fiber, id); if (hook !== null) { var newState = copyWithDelete(hook.memoizedState, path); hook.memoizedState = newState; hook.baseState = newState; // We aren't actually adding an update to the queue, // because there is no update we can add for useReducer hooks that won't trigger an error. // (There's no appropriate action type for DevTools overrides.) // As a result though, React will see the scheduled update as a noop and bailout. // Shallow cloning props works as a workaround for now to bypass the bailout check. fiber.memoizedProps = assign({}, fiber.memoizedProps); var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } } }; overrideHookStateRenamePath = function(fiber, id, oldPath, newPath) { var hook = findHook(fiber, id); if (hook !== null) { var newState = copyWithRename(hook.memoizedState, oldPath, newPath); hook.memoizedState = newState; hook.baseState = newState; // We aren't actually adding an update to the queue, // because there is no update we can add for useReducer hooks that won't trigger an error. // (There's no appropriate action type for DevTools overrides.) // As a result though, React will see the scheduled update as a noop and bailout. // Shallow cloning props works as a workaround for now to bypass the bailout check. fiber.memoizedProps = assign({}, fiber.memoizedProps); var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } } }; // Support DevTools props for function components, forwardRef, memo, host components, etc. overrideProps = function(fiber, path, value) { fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); if (fiber.alternate) { fiber.alternate.pendingProps = fiber.pendingProps; } var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } }; overridePropsDeletePath = function(fiber, path) { fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); if (fiber.alternate) { fiber.alternate.pendingProps = fiber.pendingProps; } var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } }; overridePropsRenamePath = function(fiber, oldPath, newPath) { fiber.pendingProps = copyWithRename(fiber.memoizedProps, oldPath, newPath); if (fiber.alternate) { fiber.alternate.pendingProps = fiber.pendingProps; } var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } }; scheduleUpdate = function(fiber) { var root = enqueueConcurrentRenderForLane(fiber, SyncLane); if (root !== null) { scheduleUpdateOnFiber(root, fiber, SyncLane, NoTimestamp); } }; setErrorHandler = function(newShouldErrorImpl) { shouldErrorImpl = newShouldErrorImpl; }; setSuspenseHandler = function(newShouldSuspendImpl) { shouldSuspendImpl = newShouldSuspendImpl; }; } function findHostInstanceByFiber(fiber) { var hostFiber = findCurrentHostFiber(fiber); if (hostFiber === null) { return null; } return hostFiber.stateNode; } function emptyFindFiberByHostInstance(instance) { return null; } function getCurrentFiberForDevTools() { return current; } function injectIntoDevTools(devToolsConfig) { var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher; return injectInternals({ bundleType: devToolsConfig.bundleType, version: devToolsConfig.version, rendererPackageName: devToolsConfig.rendererPackageName, rendererConfig: devToolsConfig.rendererConfig, overrideHookState: overrideHookState, overrideHookStateDeletePath: overrideHookStateDeletePath, overrideHookStateRenamePath: overrideHookStateRenamePath, overrideProps: overrideProps, overridePropsDeletePath: overridePropsDeletePath, overridePropsRenamePath: overridePropsRenamePath, setErrorHandler: setErrorHandler, setSuspenseHandler: setSuspenseHandler, scheduleUpdate: scheduleUpdate, currentDispatcherRef: ReactCurrentDispatcher, findHostInstanceByFiber: findHostInstanceByFiber, findFiberByHostInstance: findFiberByHostInstance || emptyFindFiberByHostInstance, // React Refresh findHostInstancesForRefresh: findHostInstancesForRefresh, scheduleRefresh: scheduleRefresh, scheduleRoot: scheduleRoot, setRefreshHandler: setRefreshHandler, // Enables DevTools to append owner stacks to error messages in DEV mode. getCurrentFiber: getCurrentFiberForDevTools, // Enables DevTools to detect reconciler version rather than renderer version // which may not match for third party renderers. reconcilerVersion: ReactVersion }); } var emptyObject$1 = {}; { Object.freeze(emptyObject$1); } var createHierarchy; var getHostNode; var getHostProps; var lastNonHostInstance; var getOwnerHierarchy; var traverseOwnerTreeUp; { createHierarchy = function(fiberHierarchy) { return fiberHierarchy.map(function(fiber) { return { name: getComponentNameFromType(fiber.type), getInspectorData: function(findNodeHandle) { return { props: getHostProps(fiber), source: fiber._debugSource, measure: function(callback) { // If this is Fabric, we'll find a ShadowNode and use that to measure. var hostFiber = findCurrentHostFiber(fiber); var shadowNode = hostFiber != null && hostFiber.stateNode !== null && hostFiber.stateNode.node; if (shadowNode) { nativeFabricUIManager.measure(shadowNode, callback); } else { return ReactNativePrivateInterface.UIManager.measure( getHostNode(fiber, findNodeHandle), callback ); } } }; } }; }); }; getHostNode = function(fiber, findNodeHandle) { var hostNode; // look for children first for the hostNode // as composite fibers do not have a hostNode while (fiber) { if (fiber.stateNode !== null && fiber.tag === HostComponent) { hostNode = findNodeHandle(fiber.stateNode); } if (hostNode) { return hostNode; } fiber = fiber.child; } return null; }; getHostProps = function(fiber) { var host = findCurrentHostFiber(fiber); if (host) { return host.memoizedProps || emptyObject$1; } return emptyObject$1; }; exports.getInspectorDataForInstance = function(closestInstance) { // Handle case where user clicks outside of ReactNative if (!closestInstance) { return { hierarchy: [], props: emptyObject$1, selectedIndex: null, source: null }; } var fiber = findCurrentFiberUsingSlowPath(closestInstance); var fiberHierarchy = getOwnerHierarchy(fiber); var instance = lastNonHostInstance(fiberHierarchy); var hierarchy = createHierarchy(fiberHierarchy); var props = getHostProps(instance); var source = instance._debugSource; var selectedIndex = fiberHierarchy.indexOf(instance); return { hierarchy: hierarchy, props: props, selectedIndex: selectedIndex, source: source }; }; getOwnerHierarchy = function(instance) { var hierarchy = []; traverseOwnerTreeUp(hierarchy, instance); return hierarchy; }; lastNonHostInstance = function(hierarchy) { for (var i = hierarchy.length - 1; i > 1; i--) { var instance = hierarchy[i]; if (instance.tag !== HostComponent) { return instance; } } return hierarchy[0]; }; traverseOwnerTreeUp = function(hierarchy, instance) { if (instance) { hierarchy.unshift(instance); traverseOwnerTreeUp(hierarchy, instance._debugOwner); } }; } var getInspectorDataForViewTag; var getInspectorDataForViewAtPoint; { getInspectorDataForViewTag = function(viewTag) { var closestInstance = getInstanceFromTag(viewTag); // Handle case where user clicks outside of ReactNative if (!closestInstance) { return { hierarchy: [], props: emptyObject$1, selectedIndex: null, source: null }; } var fiber = findCurrentFiberUsingSlowPath(closestInstance); var fiberHierarchy = getOwnerHierarchy(fiber); var instance = lastNonHostInstance(fiberHierarchy); var hierarchy = createHierarchy(fiberHierarchy); var props = getHostProps(instance); var source = instance._debugSource; var selectedIndex = fiberHierarchy.indexOf(instance); return { hierarchy: hierarchy, props: props, selectedIndex: selectedIndex, source: source }; }; getInspectorDataForViewAtPoint = function( findNodeHandle, inspectedView, locationX, locationY, callback ) { var closestInstance = null; if (inspectedView._internalInstanceHandle != null) { // For Fabric we can look up the instance handle directly and measure it. nativeFabricUIManager.findNodeAtPoint( inspectedView._internalInstanceHandle.stateNode.node, locationX, locationY, function(internalInstanceHandle) { if (internalInstanceHandle == null) { callback( assign( { pointerY: locationY, frame: { left: 0, top: 0, width: 0, height: 0 } }, exports.getInspectorDataForInstance(closestInstance) ) ); } closestInstance = internalInstanceHandle.stateNode.canonical._internalInstanceHandle; // Note: this is deprecated and we want to remove it ASAP. Keeping it here for React DevTools compatibility for now. var nativeViewTag = internalInstanceHandle.stateNode.canonical._nativeTag; nativeFabricUIManager.measure( internalInstanceHandle.stateNode.node, function(x, y, width, height, pageX, pageY) { var inspectorData = exports.getInspectorDataForInstance( closestInstance ); callback( assign({}, inspectorData, { pointerY: locationY, frame: { left: pageX, top: pageY, width: width, height: height }, touchedViewTag: nativeViewTag }) ); } ); } ); } else if (inspectedView._internalFiberInstanceHandleDEV != null) { // For Paper we fall back to the old strategy using the React tag. ReactNativePrivateInterface.UIManager.findSubviewIn( findNodeHandle(inspectedView), [locationX, locationY], function(nativeViewTag, left, top, width, height) { var inspectorData = exports.getInspectorDataForInstance( getInstanceFromTag(nativeViewTag) ); callback( assign({}, inspectorData, { pointerY: locationY, frame: { left: left, top: top, width: width, height: height }, touchedViewTag: nativeViewTag }) ); } ); } else { error( "getInspectorDataForViewAtPoint expects to receive a host component" ); return; } }; } var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner; function findHostInstance_DEPRECATED(componentOrHandle) { { var owner = ReactCurrentOwner$3.current; if (owner !== null && owner.stateNode !== null) { if (!owner.stateNode._warnedAboutRefsInRender) { error( "%s is accessing findNodeHandle inside its render(). " + "render() should be a pure function of props and state. It should " + "never access something that requires stale data from the previous " + "render, such as refs. Move this logic to componentDidMount and " + "componentDidUpdate instead.", getComponentNameFromType(owner.type) || "A component" ); } owner.stateNode._warnedAboutRefsInRender = true; } } if (componentOrHandle == null) { return null; } if (componentOrHandle._nativeTag) { return componentOrHandle; } if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag) { return componentOrHandle.canonical; } var hostInstance; { hostInstance = findHostInstanceWithWarning( componentOrHandle, "findHostInstance_DEPRECATED" ); } if (hostInstance == null) { return hostInstance; } if (hostInstance.canonical) { // Fabric return hostInstance.canonical; } // $FlowFixMe[incompatible-return] return hostInstance; } function findNodeHandle(componentOrHandle) { { var owner = ReactCurrentOwner$3.current; if (owner !== null && owner.stateNode !== null) { if (!owner.stateNode._warnedAboutRefsInRender) { error( "%s is accessing findNodeHandle inside its render(). " + "render() should be a pure function of props and state. It should " + "never access something that requires stale data from the previous " + "render, such as refs. Move this logic to componentDidMount and " + "componentDidUpdate instead.", getComponentNameFromType(owner.type) || "A component" ); } owner.stateNode._warnedAboutRefsInRender = true; } } if (componentOrHandle == null) { return null; } if (typeof componentOrHandle === "number") { // Already a node handle return componentOrHandle; } if (componentOrHandle._nativeTag) { return componentOrHandle._nativeTag; } if (componentOrHandle.canonical && componentOrHandle.canonical._nativeTag) { return componentOrHandle.canonical._nativeTag; } var hostInstance; { hostInstance = findHostInstanceWithWarning( componentOrHandle, "findNodeHandle" ); } if (hostInstance == null) { return hostInstance; } if (hostInstance.canonical) { // Fabric return hostInstance.canonical._nativeTag; } return hostInstance._nativeTag; } function dispatchCommand(handle, command, args) { if (handle._nativeTag == null) { { error( "dispatchCommand was called with a ref that isn't a " + "native component. Use React.forwardRef to get access to the underlying native component" ); } return; } if (handle._internalInstanceHandle != null) { var stateNode = handle._internalInstanceHandle.stateNode; if (stateNode != null) { nativeFabricUIManager.dispatchCommand(stateNode.node, command, args); } } else { ReactNativePrivateInterface.UIManager.dispatchViewManagerCommand( handle._nativeTag, command, args ); } } function sendAccessibilityEvent(handle, eventType) { if (handle._nativeTag == null) { { error( "sendAccessibilityEvent was called with a ref that isn't a " + "native component. Use React.forwardRef to get access to the underlying native component" ); } return; } if (handle._internalInstanceHandle != null) { var stateNode = handle._internalInstanceHandle.stateNode; if (stateNode != null) { nativeFabricUIManager.sendAccessibilityEvent(stateNode.node, eventType); } } else { ReactNativePrivateInterface.legacySendAccessibilityEvent( handle._nativeTag, eventType ); } } function onRecoverableError(error$1) { // TODO: Expose onRecoverableError option to userspace // eslint-disable-next-line react-internal/no-production-logging, react-internal/warning-args error(error$1); } function render(element, containerTag, callback) { var root = roots.get(containerTag); if (!root) { // TODO (bvaughn): If we decide to keep the wrapper component, // We could create a wrapper for containerTag as well to reduce special casing. root = createContainer( containerTag, LegacyRoot, null, false, null, "", onRecoverableError ); roots.set(containerTag, root); } updateContainer(element, root, null, callback); // $FlowIssue Flow has hardcoded values for React DOM that don't work with RN return getPublicRootInstance(root); } function unmountComponentAtNode(containerTag) { var root = roots.get(containerTag); if (root) { // TODO: Is it safe to reset this now or should I wait since this unmount could be deferred? updateContainer(null, root, null, function() { roots.delete(containerTag); }); } } function unmountComponentAtNodeAndRemoveContainer(containerTag) { unmountComponentAtNode(containerTag); // Call back into native to remove all of the subviews from this container ReactNativePrivateInterface.UIManager.removeRootView(containerTag); } function createPortal$1(children, containerTag) { var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null; return createPortal(children, containerTag, null, key); } setBatchingImplementation(batchedUpdates$1); function computeComponentStackForErrorReporting(reactTag) { var fiber = getInstanceFromTag(reactTag); if (!fiber) { return ""; } return getStackByFiberInDevAndProd(fiber); } var roots = new Map(); var Internals = { computeComponentStackForErrorReporting: computeComponentStackForErrorReporting }; injectIntoDevTools({ findFiberByHostInstance: getInstanceFromTag, bundleType: 1, version: ReactVersion, rendererPackageName: "react-native-renderer", rendererConfig: { getInspectorDataForViewTag: getInspectorDataForViewTag, getInspectorDataForViewAtPoint: getInspectorDataForViewAtPoint.bind( null, findNodeHandle ) } }); exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals; exports.createPortal = createPortal$1; exports.dispatchCommand = dispatchCommand; exports.findHostInstance_DEPRECATED = findHostInstance_DEPRECATED; exports.findNodeHandle = findNodeHandle; exports.render = render; exports.sendAccessibilityEvent = sendAccessibilityEvent; exports.unmountComponentAtNode = unmountComponentAtNode; exports.unmountComponentAtNodeAndRemoveContainer = unmountComponentAtNodeAndRemoveContainer; exports.unstable_batchedUpdates = batchedUpdates; /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ if ( typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === 'function' ) { __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); } })(); }