usePreviousRef

Return a ref object whose .current property is assigned to previous updated value. The first time is undefined.

API

function usePreviousRef<T>(value: T): React.MutableRefObject<T | undefined>;

Example

import React from "react";
import { usePreviousRef } from "@lilib/hooks";

function Example(props) {
  const valueRef = usePreviousRef(props.value)
  ...
}