12 lines
232 B
TypeScript
12 lines
232 B
TypeScript
import { useEffect, useRef } from 'react';
|
|
|
|
export function usePrevious<T>(value: T): T | undefined {
|
|
const ref = useRef<T | undefined>(value);
|
|
|
|
useEffect(() => {
|
|
ref.current = value;
|
|
}, [value]);
|
|
|
|
return ref.current;
|
|
}
|