text: "use strict";
  
  var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
  
  exports.__esModule = true;
  exports.onlineManager = exports.OnlineManager = void 0;
  
  var _inheritsLoose2 = _interopRequireDefault(require("@babel/runtime/helpers/inheritsLoose"));
  
  var _subscribable = require("./subscribable");
  
  var _utils = require("./utils");
  
  var OnlineManager = /*#__PURE__*/function (_Subscribable) {
    (0, _inheritsLoose2.default)(OnlineManager, _Subscribable);
  
    function OnlineManager() {
      var _this;
  
      _this = _Subscribable.call(this) || this;
  
      _this.setup = function (onOnline) {
        var _window;
  
        if (!_utils.isServer && ((_window = window) == null ? void 0 : _window.addEventListener)) {
          var listener = function listener() {
            return onOnline();
          }; // Listen to online
  
  
          window.addEventListener('online', listener, false);
          window.addEventListener('offline', listener, false);
          return function () {
            // Be sure to unsubscribe if a new handler is set
            window.removeEventListener('online', listener);
            window.removeEventListener('offline', listener);
          };
        }
      };
  
      return _this;
    }
  
    var _proto = OnlineManager.prototype;
  
    _proto.onSubscribe = function onSubscribe() {
      if (!this.cleanup) {
        this.setEventListener(this.setup);
      }
    };
  
    _proto.onUnsubscribe = function onUnsubscribe() {
      if (!this.hasListeners()) {
        var _this$cleanup;
  
        (_this$cleanup = this.cleanup) == null ? void 0 : _this$cleanup.call(this);
        this.cleanup = undefined;
      }
    };
  
    _proto.setEventListener = function setEventListener(setup) {
      var _this$cleanup2,
          _this2 = this;
  
      this.setup = setup;
      (_this$cleanup2 = this.cleanup) == null ? void 0 : _this$cleanup2.call(this);
      this.cleanup = setup(function (online) {
        if (typeof online === 'boolean') {
          _this2.setOnline(online);
        } else {
          _this2.onOnline();
        }
      });
    };
  
    _proto.setOnline = function setOnline(online) {
      this.online = online;
  
      if (online) {
        this.onOnline();
      }
    };
  
    _proto.onOnline = function onOnline() {
      this.listeners.forEach(function (listener) {
        listener();
      });
    };
  
    _proto.isOnline = function isOnline() {
      if (typeof this.online === 'boolean') {
        return this.online;
      }
  
      if (typeof navigator === 'undefined' || typeof navigator.onLine === 'undefined') {
        return true;
      }
  
      return navigator.onLine;
    };
  
    return OnlineManager;
  }(_subscribable.Subscribable);
  
  exports.OnlineManager = OnlineManager;
  var onlineManager = new OnlineManager();
  exports.onlineManager = onlineManager;