Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 | import React from 'react'; export function usePrevious<T>(value: T) { const ref = React.useRef<T>(); React.useEffect(() => { ref.current = value; }, [value]); return ref.current; } |