35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
"use strict";
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useSafeState;
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var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
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var React = _interopRequireWildcard(require("react"));
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/**
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* Same as React.useState but `setState` accept `ignoreDestroy` param to not to setState after destroyed.
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* We do not make this auto is to avoid real memory leak.
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* Developer should confirm it's safe to ignore themselves.
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*/
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function useSafeState(defaultValue) {
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var destroyRef = React.useRef(false);
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var _React$useState = React.useState(defaultValue),
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_React$useState2 = (0, _slicedToArray2.default)(_React$useState, 2),
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value = _React$useState2[0],
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setValue = _React$useState2[1];
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React.useEffect(function () {
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destroyRef.current = false;
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return function () {
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destroyRef.current = true;
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};
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}, []);
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function safeSetState(updater, ignoreDestroy) {
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if (ignoreDestroy && destroyRef.current) {
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return;
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}
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setValue(updater);
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}
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return [value, safeSetState];
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} |