function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
var Event = /*#__PURE__*/function () {
  function Event() {
    _classCallCheck(this, Event);
    this._events = {};
  }
  _createClass(Event, [{
    key: "bind",
    value: function bind(eventName, callback) {
      var callbacks = this._events[eventName] || [];
      callbacks.push(callback);
      this._events[eventName] = callbacks;
    }
  }, {
    key: "emit",
    value: function emit(eventName) {
      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        args[_key - 1] = arguments[_key];
      }
      var callbacks = this._events[eventName] || [];
      callbacks.forEach(function (cb) {
        return cb.apply(void 0, args);
      });
    }
  }, {
    key: "unbind",
    value: function unbind(eventName, callback) {
      var callbacks = this._events[eventName] || [];
      var newCallbacks = callbacks.filter(function (fn) {
        return fn != callback && fn.initialCallback != callback;
      });
      this._events[eventName] = newCallbacks;
    }
  }]);
  return Event;
}();
export { Event as default };