@taro-hooks/use-request/es/plugins/useRefreshOnWindowFocusPlugin.js

useRequest hook for Taro

import { useDidShow, useDidHide } from '@tarojs/taro';
import { useEffect, useRef } from '@taro-hooks/core';
import { useUnmount } from '@taro-hooks/ahooks';
import limit from '../utils/limit';
import isOnline from '../utils/isOnline';
function _call(body, then, direct) {
  if (direct) {
    return then ? then(body()) : body();
  }
  try {
    var result = Promise.resolve(body());
    return then ? result.then(then) : result;
  } catch (e) {
    return Promise.reject(e);
  }
}
var listeners = [];
function subscribe(listener) {
  listeners.push(listener);
  return function unsubscribe() {
    var index = listeners.indexOf(listener);
    if (index > -1) {
      listeners.splice(index, 1);
    }
  };
}
var useRefreshOnWindowFocusPlugin = function useRefreshOnWindowFocusPlugin(fetchInstance, _ref) {
  var refreshOnWindowFocus = _ref.refreshOnWindowFocus,
    _ref$focusTimespan = _ref.focusTimespan,
    focusTimespan = _ref$focusTimespan === void 0 ? 5000 : _ref$focusTimespan;
  var unsubscribeRef = useRef();
  var visible = useRef(true);
  var stopSubscribe = function stopSubscribe() {
    unsubscribeRef.current == null ? void 0 : unsubscribeRef.current();
  };
  var subscribeFocus = function subscribeFocus() {
    return _call(isOnline, function (online) {
      if (visible.current || !online) return;
      for (var i = 0; i < listeners.length; i++) {
        var listener = listeners[i];
        listener();
      }
    });
  };
  useDidShow(function () {
    visible.current = true;
    subscribeFocus();
  });
  useDidHide(function () {
    visible.current = false;
    subscribeFocus();
  });
  useEffect(function () {
    if (refreshOnWindowFocus) {
      var limitRefresh = limit(fetchInstance.refresh.bind(fetchInstance), focusTimespan);
      unsubscribeRef.current = subscribe(function () {
        limitRefresh();
      });
    }
    return function () {
      stopSubscribe();
    };
  }, [refreshOnWindowFocus, focusTimespan]);
  useUnmount(function () {
    stopSubscribe();
  });
  return {};
};
export default useRefreshOnWindowFocusPlugin;