452 lines
18 KiB
JavaScript
452 lines
18 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
var helperPluginUtils = require('@babel/helper-plugin-utils');
|
|
var core = require('@babel/core');
|
|
var pluginTransformParameters = require('@babel/plugin-transform-parameters');
|
|
var helperCompilationTargets = require('@babel/helper-compilation-targets');
|
|
var compatData = require('@babel/compat-data/corejs2-built-ins');
|
|
|
|
function _interopDefault (e) { return e && e.__esModule ? e : { default: e }; }
|
|
|
|
var compatData__default = /*#__PURE__*/_interopDefault(compatData);
|
|
|
|
const {
|
|
isObjectProperty: isObjectProperty$1,
|
|
isArrayPattern,
|
|
isObjectPattern,
|
|
isAssignmentPattern: isAssignmentPattern$1,
|
|
isRestElement,
|
|
isIdentifier
|
|
} = core.types;
|
|
function shouldStoreRHSInTemporaryVariable(node) {
|
|
if (isArrayPattern(node)) {
|
|
const nonNullElements = node.elements.filter(element => element !== null);
|
|
if (nonNullElements.length > 1) return true;else return shouldStoreRHSInTemporaryVariable(nonNullElements[0]);
|
|
} else if (isObjectPattern(node)) {
|
|
const {
|
|
properties
|
|
} = node;
|
|
if (properties.length > 1) return true;else if (properties.length === 0) return false;else {
|
|
const firstProperty = properties[0];
|
|
if (isObjectProperty$1(firstProperty)) {
|
|
return shouldStoreRHSInTemporaryVariable(firstProperty.value);
|
|
} else {
|
|
return shouldStoreRHSInTemporaryVariable(firstProperty);
|
|
}
|
|
}
|
|
} else if (isAssignmentPattern$1(node)) {
|
|
return shouldStoreRHSInTemporaryVariable(node.left);
|
|
} else if (isRestElement(node)) {
|
|
if (isIdentifier(node.argument)) return true;
|
|
return shouldStoreRHSInTemporaryVariable(node.argument);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const {
|
|
isAssignmentPattern,
|
|
isObjectProperty
|
|
} = core.types;
|
|
{
|
|
const node = core.types.identifier("a");
|
|
const property = core.types.objectProperty(core.types.identifier("key"), node);
|
|
const pattern = core.types.objectPattern([property]);
|
|
var ZERO_REFS = core.types.isReferenced(node, property, pattern) ? 1 : 0;
|
|
}
|
|
var index = helperPluginUtils.declare((api, opts) => {
|
|
var _api$assumption, _api$assumption2, _api$assumption3, _api$assumption4;
|
|
api.assertVersion(7);
|
|
const targets = api.targets();
|
|
const supportsObjectAssign = !helperCompilationTargets.isRequired("es6.object.assign", targets, {
|
|
compatData: compatData__default.default
|
|
});
|
|
const {
|
|
useBuiltIns = supportsObjectAssign,
|
|
loose = false
|
|
} = opts;
|
|
if (typeof loose !== "boolean") {
|
|
throw new Error(".loose must be a boolean, or undefined");
|
|
}
|
|
const ignoreFunctionLength = (_api$assumption = api.assumption("ignoreFunctionLength")) != null ? _api$assumption : loose;
|
|
const objectRestNoSymbols = (_api$assumption2 = api.assumption("objectRestNoSymbols")) != null ? _api$assumption2 : loose;
|
|
const pureGetters = (_api$assumption3 = api.assumption("pureGetters")) != null ? _api$assumption3 : loose;
|
|
const setSpreadProperties = (_api$assumption4 = api.assumption("setSpreadProperties")) != null ? _api$assumption4 : loose;
|
|
function getExtendsHelper(file) {
|
|
return useBuiltIns ? core.types.memberExpression(core.types.identifier("Object"), core.types.identifier("assign")) : file.addHelper("extends");
|
|
}
|
|
function hasRestElement(path) {
|
|
let foundRestElement = false;
|
|
visitRestElements(path, restElement => {
|
|
foundRestElement = true;
|
|
restElement.stop();
|
|
});
|
|
return foundRestElement;
|
|
}
|
|
function hasObjectPatternRestElement(path) {
|
|
let foundRestElement = false;
|
|
visitRestElements(path, restElement => {
|
|
if (restElement.parentPath.isObjectPattern()) {
|
|
foundRestElement = true;
|
|
restElement.stop();
|
|
}
|
|
});
|
|
return foundRestElement;
|
|
}
|
|
function visitRestElements(path, visitor) {
|
|
path.traverse({
|
|
Expression(path) {
|
|
const {
|
|
parent,
|
|
key
|
|
} = path;
|
|
if (isAssignmentPattern(parent) && key === "right" || isObjectProperty(parent) && parent.computed && key === "key") {
|
|
path.skip();
|
|
}
|
|
},
|
|
RestElement: visitor
|
|
});
|
|
}
|
|
function hasSpread(node) {
|
|
for (const prop of node.properties) {
|
|
if (core.types.isSpreadElement(prop)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
function extractNormalizedKeys(node) {
|
|
const props = node.properties;
|
|
const keys = [];
|
|
let allLiteral = true;
|
|
let hasTemplateLiteral = false;
|
|
for (const prop of props) {
|
|
if (core.types.isIdentifier(prop.key) && !prop.computed) {
|
|
keys.push(core.types.stringLiteral(prop.key.name));
|
|
} else if (core.types.isTemplateLiteral(prop.key)) {
|
|
keys.push(core.types.cloneNode(prop.key));
|
|
hasTemplateLiteral = true;
|
|
} else if (core.types.isLiteral(prop.key)) {
|
|
keys.push(core.types.stringLiteral(String(prop.key.value)));
|
|
} else {
|
|
keys.push(core.types.cloneNode(prop.key));
|
|
allLiteral = false;
|
|
}
|
|
}
|
|
return {
|
|
keys,
|
|
allLiteral,
|
|
hasTemplateLiteral
|
|
};
|
|
}
|
|
function replaceImpureComputedKeys(properties, scope) {
|
|
const impureComputedPropertyDeclarators = [];
|
|
for (const propPath of properties) {
|
|
const key = propPath.get("key");
|
|
if (propPath.node.computed && !key.isPure()) {
|
|
const name = scope.generateUidBasedOnNode(key.node);
|
|
const declarator = core.types.variableDeclarator(core.types.identifier(name), key.node);
|
|
impureComputedPropertyDeclarators.push(declarator);
|
|
key.replaceWith(core.types.identifier(name));
|
|
}
|
|
}
|
|
return impureComputedPropertyDeclarators;
|
|
}
|
|
function removeUnusedExcludedKeys(path) {
|
|
const bindings = path.getOuterBindingIdentifierPaths();
|
|
Object.keys(bindings).forEach(bindingName => {
|
|
const bindingParentPath = bindings[bindingName].parentPath;
|
|
if (path.scope.getBinding(bindingName).references > ZERO_REFS || !bindingParentPath.isObjectProperty()) {
|
|
return;
|
|
}
|
|
bindingParentPath.remove();
|
|
});
|
|
}
|
|
function createObjectRest(path, file, objRef) {
|
|
const props = path.get("properties");
|
|
const last = props[props.length - 1];
|
|
core.types.assertRestElement(last.node);
|
|
const restElement = core.types.cloneNode(last.node);
|
|
last.remove();
|
|
const impureComputedPropertyDeclarators = replaceImpureComputedKeys(path.get("properties"), path.scope);
|
|
const {
|
|
keys,
|
|
allLiteral,
|
|
hasTemplateLiteral
|
|
} = extractNormalizedKeys(path.node);
|
|
if (keys.length === 0) {
|
|
return [impureComputedPropertyDeclarators, restElement.argument, core.types.callExpression(getExtendsHelper(file), [core.types.objectExpression([]), core.types.sequenceExpression([core.types.callExpression(file.addHelper("objectDestructuringEmpty"), [core.types.cloneNode(objRef)]), core.types.cloneNode(objRef)])])];
|
|
}
|
|
let keyExpression;
|
|
if (!allLiteral) {
|
|
keyExpression = core.types.callExpression(core.types.memberExpression(core.types.arrayExpression(keys), core.types.identifier("map")), [file.addHelper("toPropertyKey")]);
|
|
} else {
|
|
keyExpression = core.types.arrayExpression(keys);
|
|
if (!hasTemplateLiteral && !core.types.isProgram(path.scope.block)) {
|
|
const program = path.findParent(path => path.isProgram());
|
|
const id = path.scope.generateUidIdentifier("excluded");
|
|
program.scope.push({
|
|
id,
|
|
init: keyExpression,
|
|
kind: "const"
|
|
});
|
|
keyExpression = core.types.cloneNode(id);
|
|
}
|
|
}
|
|
return [impureComputedPropertyDeclarators, restElement.argument, core.types.callExpression(file.addHelper(`objectWithoutProperties${objectRestNoSymbols ? "Loose" : ""}`), [core.types.cloneNode(objRef), keyExpression])];
|
|
}
|
|
function replaceRestElement(parentPath, paramPath, container) {
|
|
if (paramPath.isAssignmentPattern()) {
|
|
replaceRestElement(parentPath, paramPath.get("left"), container);
|
|
return;
|
|
}
|
|
if (paramPath.isArrayPattern() && hasRestElement(paramPath)) {
|
|
const elements = paramPath.get("elements");
|
|
for (let i = 0; i < elements.length; i++) {
|
|
replaceRestElement(parentPath, elements[i], container);
|
|
}
|
|
}
|
|
if (paramPath.isObjectPattern() && hasRestElement(paramPath)) {
|
|
const uid = parentPath.scope.generateUidIdentifier("ref");
|
|
const declar = core.types.variableDeclaration("let", [core.types.variableDeclarator(paramPath.node, uid)]);
|
|
if (container) {
|
|
container.push(declar);
|
|
} else {
|
|
parentPath.ensureBlock();
|
|
parentPath.get("body").unshiftContainer("body", declar);
|
|
}
|
|
paramPath.replaceWith(core.types.cloneNode(uid));
|
|
}
|
|
}
|
|
return {
|
|
name: "transform-object-rest-spread",
|
|
inherits: require("@babel/plugin-syntax-object-rest-spread").default,
|
|
visitor: {
|
|
Function(path) {
|
|
const params = path.get("params");
|
|
const paramsWithRestElement = new Set();
|
|
const idsInRestParams = new Set();
|
|
for (let i = 0; i < params.length; ++i) {
|
|
const param = params[i];
|
|
if (hasRestElement(param)) {
|
|
paramsWithRestElement.add(i);
|
|
for (const name of Object.keys(param.getBindingIdentifiers())) {
|
|
idsInRestParams.add(name);
|
|
}
|
|
}
|
|
}
|
|
let idInRest = false;
|
|
const IdentifierHandler = function (path, functionScope) {
|
|
const name = path.node.name;
|
|
if (path.scope.getBinding(name) === functionScope.getBinding(name) && idsInRestParams.has(name)) {
|
|
idInRest = true;
|
|
path.stop();
|
|
}
|
|
};
|
|
let i;
|
|
for (i = 0; i < params.length && !idInRest; ++i) {
|
|
const param = params[i];
|
|
if (!paramsWithRestElement.has(i)) {
|
|
if (param.isReferencedIdentifier() || param.isBindingIdentifier()) {
|
|
IdentifierHandler(param, path.scope);
|
|
} else {
|
|
param.traverse({
|
|
"Scope|TypeAnnotation|TSTypeAnnotation": path => path.skip(),
|
|
"ReferencedIdentifier|BindingIdentifier": IdentifierHandler
|
|
}, path.scope);
|
|
}
|
|
}
|
|
}
|
|
if (!idInRest) {
|
|
for (let i = 0; i < params.length; ++i) {
|
|
const param = params[i];
|
|
if (paramsWithRestElement.has(i)) {
|
|
replaceRestElement(path, param);
|
|
}
|
|
}
|
|
} else {
|
|
const shouldTransformParam = idx => idx >= i - 1 || paramsWithRestElement.has(idx);
|
|
pluginTransformParameters.convertFunctionParams(path, ignoreFunctionLength, shouldTransformParam, replaceRestElement);
|
|
}
|
|
},
|
|
VariableDeclarator(path, file) {
|
|
if (!path.get("id").isObjectPattern()) {
|
|
return;
|
|
}
|
|
let insertionPath = path;
|
|
const originalPath = path;
|
|
visitRestElements(path.get("id"), path => {
|
|
if (!path.parentPath.isObjectPattern()) {
|
|
return;
|
|
}
|
|
if (shouldStoreRHSInTemporaryVariable(originalPath.node.id) && !core.types.isIdentifier(originalPath.node.init)) {
|
|
const initRef = path.scope.generateUidIdentifierBasedOnNode(originalPath.node.init, "ref");
|
|
originalPath.insertBefore(core.types.variableDeclarator(initRef, originalPath.node.init));
|
|
originalPath.replaceWith(core.types.variableDeclarator(originalPath.node.id, core.types.cloneNode(initRef)));
|
|
return;
|
|
}
|
|
let ref = originalPath.node.init;
|
|
const refPropertyPath = [];
|
|
let kind;
|
|
path.findParent(path => {
|
|
if (path.isObjectProperty()) {
|
|
refPropertyPath.unshift(path);
|
|
} else if (path.isVariableDeclarator()) {
|
|
kind = path.parentPath.node.kind;
|
|
return true;
|
|
}
|
|
});
|
|
const impureObjRefComputedDeclarators = replaceImpureComputedKeys(refPropertyPath, path.scope);
|
|
refPropertyPath.forEach(prop => {
|
|
const {
|
|
node
|
|
} = prop;
|
|
ref = core.types.memberExpression(ref, core.types.cloneNode(node.key), node.computed || core.types.isLiteral(node.key));
|
|
});
|
|
const objectPatternPath = path.findParent(path => path.isObjectPattern());
|
|
const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(objectPatternPath, file, ref);
|
|
if (pureGetters) {
|
|
removeUnusedExcludedKeys(objectPatternPath);
|
|
}
|
|
core.types.assertIdentifier(argument);
|
|
insertionPath.insertBefore(impureComputedPropertyDeclarators);
|
|
insertionPath.insertBefore(impureObjRefComputedDeclarators);
|
|
insertionPath = insertionPath.insertAfter(core.types.variableDeclarator(argument, callExpression))[0];
|
|
path.scope.registerBinding(kind, insertionPath);
|
|
if (objectPatternPath.node.properties.length === 0) {
|
|
objectPatternPath.findParent(path => path.isObjectProperty() || path.isVariableDeclarator()).remove();
|
|
}
|
|
});
|
|
},
|
|
ExportNamedDeclaration(path) {
|
|
const declaration = path.get("declaration");
|
|
if (!declaration.isVariableDeclaration()) return;
|
|
const hasRest = declaration.get("declarations").some(path => hasObjectPatternRestElement(path.get("id")));
|
|
if (!hasRest) return;
|
|
const specifiers = [];
|
|
for (const name of Object.keys(path.getOuterBindingIdentifiers(true))) {
|
|
specifiers.push(core.types.exportSpecifier(core.types.identifier(name), core.types.identifier(name)));
|
|
}
|
|
path.replaceWith(declaration.node);
|
|
path.insertAfter(core.types.exportNamedDeclaration(null, specifiers));
|
|
},
|
|
CatchClause(path) {
|
|
const paramPath = path.get("param");
|
|
replaceRestElement(path, paramPath);
|
|
},
|
|
AssignmentExpression(path, file) {
|
|
const leftPath = path.get("left");
|
|
if (leftPath.isObjectPattern() && hasRestElement(leftPath)) {
|
|
const nodes = [];
|
|
const refName = path.scope.generateUidBasedOnNode(path.node.right, "ref");
|
|
nodes.push(core.types.variableDeclaration("var", [core.types.variableDeclarator(core.types.identifier(refName), path.node.right)]));
|
|
const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(leftPath, file, core.types.identifier(refName));
|
|
if (impureComputedPropertyDeclarators.length > 0) {
|
|
nodes.push(core.types.variableDeclaration("var", impureComputedPropertyDeclarators));
|
|
}
|
|
const nodeWithoutSpread = core.types.cloneNode(path.node);
|
|
nodeWithoutSpread.right = core.types.identifier(refName);
|
|
nodes.push(core.types.expressionStatement(nodeWithoutSpread));
|
|
nodes.push(core.types.expressionStatement(core.types.assignmentExpression("=", argument, callExpression)));
|
|
nodes.push(core.types.expressionStatement(core.types.identifier(refName)));
|
|
path.replaceWithMultiple(nodes);
|
|
}
|
|
},
|
|
ForXStatement(path) {
|
|
const {
|
|
node,
|
|
scope
|
|
} = path;
|
|
const leftPath = path.get("left");
|
|
const left = node.left;
|
|
if (!hasObjectPatternRestElement(leftPath)) {
|
|
return;
|
|
}
|
|
if (!core.types.isVariableDeclaration(left)) {
|
|
const temp = scope.generateUidIdentifier("ref");
|
|
node.left = core.types.variableDeclaration("var", [core.types.variableDeclarator(temp)]);
|
|
path.ensureBlock();
|
|
const body = path.node.body;
|
|
if (body.body.length === 0 && path.isCompletionRecord()) {
|
|
body.body.unshift(core.types.expressionStatement(scope.buildUndefinedNode()));
|
|
}
|
|
body.body.unshift(core.types.expressionStatement(core.types.assignmentExpression("=", left, core.types.cloneNode(temp))));
|
|
} else {
|
|
const pattern = left.declarations[0].id;
|
|
const key = scope.generateUidIdentifier("ref");
|
|
node.left = core.types.variableDeclaration(left.kind, [core.types.variableDeclarator(key, null)]);
|
|
path.ensureBlock();
|
|
const body = node.body;
|
|
body.body.unshift(core.types.variableDeclaration(node.left.kind, [core.types.variableDeclarator(pattern, core.types.cloneNode(key))]));
|
|
}
|
|
},
|
|
ArrayPattern(path) {
|
|
const objectPatterns = [];
|
|
visitRestElements(path, path => {
|
|
if (!path.parentPath.isObjectPattern()) {
|
|
return;
|
|
}
|
|
const objectPattern = path.parentPath;
|
|
const uid = path.scope.generateUidIdentifier("ref");
|
|
objectPatterns.push(core.types.variableDeclarator(objectPattern.node, uid));
|
|
objectPattern.replaceWith(core.types.cloneNode(uid));
|
|
path.skip();
|
|
});
|
|
if (objectPatterns.length > 0) {
|
|
const statementPath = path.getStatementParent();
|
|
const statementNode = statementPath.node;
|
|
const kind = statementNode.type === "VariableDeclaration" ? statementNode.kind : "var";
|
|
statementPath.insertAfter(core.types.variableDeclaration(kind, objectPatterns));
|
|
}
|
|
},
|
|
ObjectExpression(path, file) {
|
|
if (!hasSpread(path.node)) return;
|
|
let helper;
|
|
if (setSpreadProperties) {
|
|
helper = getExtendsHelper(file);
|
|
} else {
|
|
try {
|
|
helper = file.addHelper("objectSpread2");
|
|
} catch (_unused) {
|
|
this.file.declarations["objectSpread2"] = null;
|
|
helper = file.addHelper("objectSpread");
|
|
}
|
|
}
|
|
let exp = null;
|
|
let props = [];
|
|
function make() {
|
|
const hadProps = props.length > 0;
|
|
const obj = core.types.objectExpression(props);
|
|
props = [];
|
|
if (!exp) {
|
|
exp = core.types.callExpression(helper, [obj]);
|
|
return;
|
|
}
|
|
if (pureGetters) {
|
|
if (hadProps) {
|
|
exp.arguments.push(obj);
|
|
}
|
|
return;
|
|
}
|
|
exp = core.types.callExpression(core.types.cloneNode(helper), [exp, ...(hadProps ? [core.types.objectExpression([]), obj] : [])]);
|
|
}
|
|
for (const prop of path.node.properties) {
|
|
if (core.types.isSpreadElement(prop)) {
|
|
make();
|
|
exp.arguments.push(prop.argument);
|
|
} else {
|
|
props.push(prop);
|
|
}
|
|
}
|
|
if (props.length) make();
|
|
path.replaceWith(exp);
|
|
}
|
|
}
|
|
};
|
|
});
|
|
|
|
exports.default = index;
|
|
//# sourceMappingURL=index.js.map
|