2020-07-09 13:00:42 +02:00
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import { useEffect, useRef } from "react";
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2020-04-27 22:43:42 +02:00
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export function usePrevious<T>(value: T): T|undefined {
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2020-07-09 13:00:42 +02:00
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const ref = useRef<T>();
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2020-04-27 22:43:42 +02:00
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useEffect(() => {
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ref.current = value;
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}, [value]);
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return ref.current as T|undefined;
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}
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