add hw2

node_modules/chromium-bidi/lib/cjs/utils/ProcessingQueue.js

@@ -0,0 +1,67 @@
+"use strict";
+/**
+ * Copyright 2022 Google LLC.
+ * 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.
+ */
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ProcessingQueue = void 0;
+const log_js_1 = require("./log.js");
+class ProcessingQueue {
+    static LOGGER_PREFIX = `${log_js_1.LogType.debug}:queue`;
+    #logger;
+    #processor;
+    #queue = [];
+    // Flag to keep only 1 active processor.
+    #isProcessing = false;
+    constructor(processor, logger) {
+        this.#processor = processor;
+        this.#logger = logger;
+    }
+    add(entry, name) {
+        this.#queue.push([entry, name]);
+        // No need in waiting. Just initialize processor if needed.
+        void this.#processIfNeeded();
+    }
+    async #processIfNeeded() {
+        if (this.#isProcessing) {
+            return;
+        }
+        this.#isProcessing = true;
+        while (this.#queue.length > 0) {
+            const arrayEntry = this.#queue.shift();
+            if (!arrayEntry) {
+                continue;
+            }
+            const [entryPromise, name] = arrayEntry;
+            this.#logger?.(_a.LOGGER_PREFIX, 'Processing event:', name);
+            await entryPromise
+                .then((entry) => {
+                if (entry.kind === 'error') {
+                    this.#logger?.(log_js_1.LogType.debugError, 'Event threw before sending:', entry.error.message, entry.error.stack);
+                    return;
+                }
+                return this.#processor(entry.value);
+            })
+                .catch((error) => {
+                this.#logger?.(log_js_1.LogType.debugError, 'Event was not processed:', error?.message);
+            });
+        }
+        this.#isProcessing = false;
+    }
+}
+exports.ProcessingQueue = ProcessingQueue;
+_a = ProcessingQueue;
+//# sourceMappingURL=ProcessingQueue.js.map