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16 lines
307 B
16 lines
307 B
import { useRef, useEffect } from 'react';
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export default function usePrevious<T>(current: T): {
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current: T;
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} {
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const ref = useRef<T>(current);
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// will be updated on the next render
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useEffect(() => {
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ref.current = current;
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});
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// return the existing current (pre render)
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return ref;
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}
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