21 lines
698 B
TypeScript
21 lines
698 B
TypeScript
import { useRef } from '../lib/teact/teact';
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/**
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* @deprecated
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*/
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function usePreviousDeprecated<T extends any>(next: T): T | undefined;
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function usePreviousDeprecated<T extends any>(next: T, shouldSkipUndefined: true): Exclude<T, undefined> | undefined;
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// eslint-disable-next-line max-len
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function usePreviousDeprecated<T extends any>(next: T, shouldSkipUndefined?: boolean): Exclude<T, undefined> | undefined;
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function usePreviousDeprecated<T extends any>(next: T, shouldSkipUndefined?: boolean) {
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const ref = useRef<T>();
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const { current } = ref;
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if (!shouldSkipUndefined || next !== undefined) {
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ref.current = next;
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}
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return current;
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}
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export default usePreviousDeprecated;
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