@gravity-ui/graph
Version:
Modern graph editor component
16 lines (15 loc) • 424 B
TypeScript
/**
* Hook for tracking the previous value of a state.
*
* @example
* ```tsx
* const [count, setCount] = useState(0);
* const prevCount = usePrevious(count);
*
* ```
*
* @template T - Type of the value being tracked
* @param value - Current value whose previous state needs to be tracked
* @returns Previous value or undefined on first render
*/
export declare function usePrevious<T>(value: T): T | undefined;