redux-online-status/es/index.js

Online status enhancer for Redux.

import getOnLine from './utils/getOnLine';

export var CHANGE = '@@online-status/CHANGE';

export var change = function change(online) {
  return { type: CHANGE, payload: online };
};

export var reducer = function reducer() {
  var state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getOnLine();
  var _ref = arguments[1];
  var type = _ref.type,
      payload = _ref.payload;

  if (type === CHANGE) {
    return payload;
  }
  return state;
};

export var defaultCreateEventListener = function defaultCreateEventListener(_ref2) {
  var dispatch = _ref2.dispatch,
      getState = _ref2.getState;
  return function () {
    var onLine = getOnLine();

    var _getState = getState(),
        current = _getState.online;

    if (current !== onLine) {
      dispatch(change(onLine));
    }
  };
};

var createEnhancer = function createEnhancer() {
  var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
      _ref3$createEventList = _ref3.createEventListener,
      createEventListener = _ref3$createEventList === undefined ? defaultCreateEventListener : _ref3$createEventList;

  return function (createStore) {
    return function () {
      var store = createStore.apply(undefined, arguments);
      if (window) {
        var listener = createEventListener(store);['online', 'offline'].forEach(function (event) {
          return window.addEventListener(event, listener);
        });
      }
      return store;
    };
  };
};

export default createEnhancer;