12 lines
348 B
TypeScript
12 lines
348 B
TypeScript
// Copyright 2020-2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { useRef } from 'react';
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export function usePrevious<T>(initialValue: T, currentValue: T): T {
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const previousValueRef = useRef<T>(initialValue);
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const result = previousValueRef.current;
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previousValueRef.current = currentValue;
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return result;
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}
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