mirror of
https://github.com/henrywhitaker3/Speedtest-Tracker.git
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60 lines
1.8 KiB
JavaScript
Vendored
60 lines
1.8 KiB
JavaScript
Vendored
import { useMemo, useRef } from 'react';
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import useMounted from './useMounted';
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import useWillUnmount from './useWillUnmount';
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/*
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* Browsers including Internet Explorer, Chrome, Safari, and Firefox store the
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* delay as a 32-bit signed integer internally. This causes an integer overflow
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* when using delays larger than 2,147,483,647 ms (about 24.8 days),
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* resulting in the timeout being executed immediately.
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*
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* via: https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout
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*/
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var MAX_DELAY_MS = Math.pow(2, 31) - 1;
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function setChainedTimeout(handleRef, fn, timeoutAtMs) {
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var delayMs = timeoutAtMs - Date.now();
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handleRef.current = delayMs <= MAX_DELAY_MS ? setTimeout(fn, delayMs) : setTimeout(function () {
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return setChainedTimeout(handleRef, fn, timeoutAtMs);
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}, MAX_DELAY_MS);
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}
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/**
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* Returns a controller object for setting a timeout that is properly cleaned up
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* once the component unmounts. New timeouts cancel and replace existing ones.
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*/
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export default function useTimeout() {
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var isMounted = useMounted(); // types are confused between node and web here IDK
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var handleRef = useRef();
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useWillUnmount(function () {
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return clearTimeout(handleRef.current);
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});
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return useMemo(function () {
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var clear = function clear() {
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return clearTimeout(handleRef.current);
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};
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function set(fn, delayMs) {
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if (delayMs === void 0) {
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delayMs = 0;
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}
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if (!isMounted()) return;
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clear();
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if (delayMs <= MAX_DELAY_MS) {
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// For simplicity, if the timeout is short, just set a normal timeout.
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handleRef.current = setTimeout(fn, delayMs);
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} else {
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setChainedTimeout(handleRef, fn, Date.now() + delayMs);
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}
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}
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return {
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set: set,
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clear: clear
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};
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}, []);
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} |