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metamask-extension/ui/hooks/useTimeout.js
Mark Stacey 3732c5f71e
Add JSDoc ESLint rules (#12112)
ESLint rules have been added to enforce our JSDoc conventions. These
rules were introduced by updating `@metamask/eslint-config` to v9.

Some of the rules have been disabled because the effort to fix all lint
errors was too high. It might be easiest to enable these rules one
directory at a time, or one rule at a time.

Most of the changes in this PR were a result of running
`yarn lint:fix`. There were a handful of manual changes that seemed
obvious and simple to make. Anything beyond that and the rule was left
disabled.
2022-01-07 12:27:33 -03:30

46 lines
963 B
JavaScript

import { useState, useEffect, useRef, useCallback } from 'react';
/**
* useTimeout
*
* @param {Function} cb - callback function inside setTimeout
* @param {number} delay - delay in ms
* @param {boolean} [immediate] - determines whether the timeout is invoked immediately
* @returns {Function|undefined}
*/
export function useTimeout(cb, delay, immediate = true) {
const saveCb = useRef();
const [timeoutId, setTimeoutId] = useState(null);
useEffect(() => {
saveCb.current = cb;
}, [cb]);
useEffect(() => {
if (timeoutId !== 'start') {
return undefined;
}
const id = setTimeout(() => {
saveCb.current();
}, delay);
setTimeoutId(id);
return () => {
clearTimeout(timeoutId);
};
}, [delay, timeoutId]);
const startTimeout = useCallback(() => {
clearTimeout(timeoutId);
setTimeoutId('start');
}, [timeoutId]);
if (immediate) {
startTimeout();
}
return startTimeout;
}