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