Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/chromium-bidi/lib/cjs/utils/Mutex.js

@@ -0,0 +1,68 @@
+"use strict";
+/**
+ * Copyright 2023 Google LLC.
+ * Copyright (c) Microsoft Corporation.
+ * Copyright 2022 The Chromium Authors.
+ *
+ * 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.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Mutex = void 0;
+/**
+ * Use Mutex class to coordinate local concurrent operations.
+ * Once `acquire` promise resolves, you hold the lock and must
+ * call `release` function returned by `acquire` to release the
+ * lock. Failing to `release` the lock may lead to deadlocks.
+ */
+class Mutex {
+    #locked = false;
+    #acquirers = [];
+    // This is FIFO.
+    acquire() {
+        const state = { resolved: false };
+        if (this.#locked) {
+            return new Promise((resolve) => {
+                this.#acquirers.push(() => resolve(this.#release.bind(this, state)));
+            });
+        }
+        this.#locked = true;
+        return Promise.resolve(this.#release.bind(this, state));
+    }
+    #release(state) {
+        if (state.resolved) {
+            throw new Error('Cannot release more than once.');
+        }
+        state.resolved = true;
+        const resolve = this.#acquirers.shift();
+        if (!resolve) {
+            this.#locked = false;
+            return;
+        }
+        resolve();
+    }
+    async run(action) {
+        const release = await this.acquire();
+        try {
+            // Note we need to await here because we want the await to release AFTER
+            // that await happens. Returning action() will trigger the release
+            // immediately which is counter to what we want.
+            const result = await action();
+            return result;
+        }
+        finally {
+            release();
+        }
+    }
+}
+exports.Mutex = Mutex;
+//# sourceMappingURL=Mutex.js.map