chore: initial code commit

src/context.ts

@@ -0,0 +1,65 @@
+/**
+ * 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.
+ */
+
+import * as playwright from 'playwright';
+
+export class Context {
+  private _launchOptions: playwright.LaunchOptions;
+  private _page: playwright.Page | undefined;
+  private _console: playwright.ConsoleMessage[] = [];
+  private _initializePromise: Promise<void> | undefined;
+
+  constructor(launchOptions: playwright.LaunchOptions) {
+    this._launchOptions = launchOptions;
+  }
+
+  async ensurePage(): Promise<playwright.Page> {
+    await this._initialize();
+    return this._page!;
+  }
+
+  async ensureConsole(): Promise<playwright.ConsoleMessage[]> {
+    await this._initialize();
+    return this._console;
+  }
+
+  async close() {
+    const page = await this.ensurePage();
+    await page.close();
+    this._initializePromise = undefined;
+  }
+
+  private async _initialize() {
+    if (this._initializePromise)
+      return this._initializePromise;
+    this._initializePromise = (async () => {
+      const browser = await this._createBrowser();
+      this._page = await browser.newPage();
+      this._page.on('console', event => this._console.push(event));
+      this._page.on('framenavigated', () => this._console.length = 0);
+    })();
+    return this._initializePromise;
+  }
+
+  private async _createBrowser(): Promise<playwright.Browser> {
+    if (process.env.PLAYWRIGHT_WS_ENDPOINT) {
+      const url = new URL(process.env.PLAYWRIGHT_WS_ENDPOINT);
+      url.searchParams.set('launch-options', JSON.stringify(this._launchOptions));
+      return await playwright.chromium.connect(String(url));
+    }
+    return await playwright.chromium.launch({ channel: 'chrome', ...this._launchOptions });
+  }
+}