30 lines
1.2 KiB
JavaScript
30 lines
1.2 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.safeRequestAnimationFrame = void 0;
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var extendComponent_1 = require("./extendComponent");
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/**
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* Generates a function to be attached to a React component, which can be called
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* as a replacement to RAF. In-flight async calls will be auto canceled if the component
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* is unmounting before the async code is executed, preventing bugs where code
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* accesses things within the component after being unmounted.
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*/
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var safeRequestAnimationFrame = function (component) {
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var activeTimeouts;
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return function (cb) {
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if (!activeTimeouts) {
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activeTimeouts = new Set();
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(0, extendComponent_1.extendComponent)(component, {
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componentWillUnmount: function () {
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activeTimeouts.forEach(function (id) { return cancelAnimationFrame(id); });
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},
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});
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}
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var timeoutId = requestAnimationFrame(function () {
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activeTimeouts.delete(timeoutId);
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cb();
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});
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activeTimeouts.add(timeoutId);
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};
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};
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exports.safeRequestAnimationFrame = safeRequestAnimationFrame;
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//# sourceMappingURL=safeRequestAnimationFrame.js.map
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