29 lines
626 B
TypeScript
29 lines
626 B
TypeScript
// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { EventEmitter } from 'events';
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import { useEffect, useState } from 'react';
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import { MINUTE } from '../util/durations';
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const ev = new EventEmitter();
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ev.setMaxListeners(Infinity);
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setInterval(() => ev.emit('tick'), MINUTE);
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export function useNowThatUpdatesEveryMinute(): number {
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const [now, setNow] = useState(Date.now());
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useEffect(() => {
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const updateNow = () => setNow(Date.now());
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updateNow();
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ev.on('tick', updateNow);
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return () => {
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ev.off('tick', updateNow);
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};
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}, []);
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return now;
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}
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