35 lines
870 B
TypeScript
35 lines
870 B
TypeScript
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { useEffect, useState } from 'react';
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function getReducedMotionQuery(): MediaQueryList {
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return window.matchMedia('(prefers-reduced-motion: reduce)');
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}
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// Inspired by <https://github.com/infiniteluke/react-reduce-motion>.
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export function useReducedMotion(): boolean {
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const initialQuery = getReducedMotionQuery();
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const [prefersReducedMotion, setPrefersReducedMotion] = useState(
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initialQuery.matches
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);
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useEffect(() => {
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const query = getReducedMotionQuery();
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function changePreference() {
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setPrefersReducedMotion(query.matches);
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}
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changePreference();
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query.addEventListener('change', changePreference);
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return () => {
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query.removeEventListener('change', changePreference);
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};
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});
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return prefersReducedMotion;
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}
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