rc-hooks/es/useUnmount/index.js

React Hooks Library.

import { useEffect } from 'react';
import useLatest from '../useLatest';
/**
 * 只在组件 `unmount` 时执行的 Hook。
 *
 * @param fn 组件 `unmount` 时执行的函数。
 * @example
 * useUnmount(() => {
 *   console.log('unmount');
 * });
 */
var useUnmount = function (fn) {
    var fnRef = useLatest(fn);
    // eslint-disable-next-line react-hooks/exhaustive-deps
    useEffect(function () { return function () { return fnRef.current(); }; }, []);
};
export default useUnmount;