screenshot/test_1

node_modules/playwright/lib/isomorphic/events.js

@@ -0,0 +1,72 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.EventEmitter = exports.Disposable = void 0;
+/**
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+let Disposable = exports.Disposable = void 0;
+(function (_Disposable) {
+  function disposeAll(disposables) {
+    for (const disposable of disposables.splice(0)) disposable.dispose();
+  }
+  _Disposable.disposeAll = disposeAll;
+})(Disposable || (exports.Disposable = Disposable = {}));
+class EventEmitter {
+  constructor() {
+    this.event = void 0;
+    this._deliveryQueue = void 0;
+    this._listeners = new Set();
+    this.event = (listener, disposables) => {
+      this._listeners.add(listener);
+      let disposed = false;
+      const self = this;
+      const result = {
+        dispose() {
+          if (!disposed) {
+            disposed = true;
+            self._listeners.delete(listener);
+          }
+        }
+      };
+      if (disposables) disposables.push(result);
+      return result;
+    };
+  }
+  fire(event) {
+    const dispatch = !this._deliveryQueue;
+    if (!this._deliveryQueue) this._deliveryQueue = [];
+    for (const listener of this._listeners) this._deliveryQueue.push({
+      listener,
+      event
+    });
+    if (!dispatch) return;
+    for (let index = 0; index < this._deliveryQueue.length; index++) {
+      const {
+        listener,
+        event
+      } = this._deliveryQueue[index];
+      listener.call(null, event);
+    }
+    this._deliveryQueue = undefined;
+  }
+  dispose() {
+    this._listeners.clear();
+    if (this._deliveryQueue) this._deliveryQueue = [];
+  }
+}
+exports.EventEmitter = EventEmitter;