useUnmountedRef

useUnmountedRef 获取当前组件是否已经卸载。

类型声明

declare function useUnmountedRef(): RefObject<boolean>

源码

import { useEffect, useRef } from 'react';

const useUnmountedRef = () => {
  const unmountedRef = useRef(false);
  useEffect(() => {
    unmountedRef.current = false;
    return () => {
      unmountedRef.current = true;
    };
  }, []);
  return unmountedRef;
};

export default useUnmountedRef;

源码

useUnmountedRef/index.ts