Function usePrevious

packages/shared/src/hooks/usePrevious.ts:3–9

(value: T)

import React, { useEffect } from 'react';

export const usePrevious = <T>(value: T): T | undefined => {
  const ref = React.useRef<T>();
  useEffect(() => {
    ref.current = value;
  });
  return ref.current;
};