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node_modules/i18next/dist/es/EventEmitter.js

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+import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
+import _createClass from "@babel/runtime/helpers/createClass";
+
+var EventEmitter =
+/*#__PURE__*/
+function () {
+  function EventEmitter() {
+    _classCallCheck(this, EventEmitter);
+
+    this.observers = {};
+  }
+
+  _createClass(EventEmitter, [{
+    key: "on",
+    value: function on(events, listener) {
+      var _this = this;
+
+      events.split(' ').forEach(function (event) {
+        _this.observers[event] = _this.observers[event] || [];
+
+        _this.observers[event].push(listener);
+      });
+      return this;
+    }
+  }, {
+    key: "off",
+    value: function off(event, listener) {
+      var _this2 = this;
+
+      if (!this.observers[event]) {
+        return;
+      }
+
+      this.observers[event].forEach(function () {
+        if (!listener) {
+          delete _this2.observers[event];
+        } else {
+          var index = _this2.observers[event].indexOf(listener);
+
+          if (index > -1) {
+            _this2.observers[event].splice(index, 1);
+          }
+        }
+      });
+    }
+  }, {
+    key: "emit",
+    value: function emit(event) {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      if (this.observers[event]) {
+        var cloned = [].concat(this.observers[event]);
+        cloned.forEach(function (observer) {
+          observer.apply(void 0, args);
+        });
+      }
+
+      if (this.observers['*']) {
+        var _cloned = [].concat(this.observers['*']);
+
+        _cloned.forEach(function (observer) {
+          observer.apply(observer, [event].concat(args));
+        });
+      }
+    }
+  }]);
+
+  return EventEmitter;
+}();
+
+export default EventEmitter;