@antmjs/vantui/es/waterfall-flow/hooks/usePersistFn/index.js

一套适用于Taro3及React的vantui组件库

import { useMemo, useRef } from 'react';
export var usePersistFn = function usePersistFn(fn) {
  var fnRef = useRef(fn);

  // why not write `fnRef.current = fn`?
  // https://github.com/alibaba/hooks/issues/728
  fnRef.current = useMemo(function () {
    return fn;
  }, [fn]);
  var memoizedFn = useRef();
  if (!memoizedFn.current) {
    memoizedFn.current = function () {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
      return fnRef.current.apply(this, args);
    };
  }
  return memoizedFn.current;
};