devops: drop playwright-electron dependency on playwright-core (#2634)

Drive-by: bump playwright-electron version to 0.4.0; i'll publish it
after this PR lands.

packages/README.md

@@ -2,7 +2,7 @@
 
 ## Overview
 
-- Playwright ships multiple packages to NPM. All packges that are published to NPM are listed as folders under [`//packages/`](../packages).
+- Playwright ships multiple packages to NPM. All packages that are published to NPM are listed as folders under [`//packages/`](../packages).
 - Playwright's [root package.json](../package.json) is **never published to NPM**. It is only used for devmode, e.g. when running `npm install` with no arguments or installing from github.
 - Playwright dependencies for all packages are the same and are managed with the [`root package.json`](../package.json).
 - Playwright browser versions for all packages are the same and are managed with the [`browsers.json`](../browsers.json).
@@ -45,3 +45,17 @@ To test packages, use [`//packages/installation-tests/installation-tests.sh`](./
 ## Publishing packages
 
  All package publishing happens **exclusively** over CI/CD using the [`//utils/publish_all_packages.sh`](../utils/publish_all_packages.sh) script.
+
+
+# Special handling for `playwright-electron`
+
+- `playwright-electron` version is pre-1.0.0 and thus managed separately. It's specified inside the [`//packages/build_package.js`]('./build_package.js') file.
+- `playwright-electron` is published manually.
+
+To publish a new version of `playwright-electron`:
+
+1. Bump `playwright-electron` version inside [`//packages/build_package.js`]('./build_package.js')
+2. Submit PR with the updated version
+3. Build package with `./build_package.js playwright-electron ./playwright-electron.tgz`
+4. Publish package with `npm publish playwright-electron.tgz`
+

packages/build_package.js

@@ -27,34 +27,40 @@ const cpAsync = util.promisify(ncp);
 const SCRIPT_NAME = path.basename(__filename);
 const ROOT_PATH = path.join(__dirname, '..');
 
-const PACKAGE_FILES = ['lib', 'types', 'NOTICE', 'LICENSE', '.npmignore'];
+const PLAYWRIGHT_CORE_FILES = ['lib', 'types', 'NOTICE', 'LICENSE', '.npmignore'];
 
 const PACKAGES = {
   'playwright': {
     description: 'A high-level API to automate web browsers',
-    whitelistedBrowsers: ['chromium', 'firefox', 'webkit'],
+    browsers: ['chromium', 'firefox', 'webkit'],
     // We copy README.md additionally for Playwright so that it looks nice on NPM.
-    files: [...PACKAGE_FILES, 'README.md'],
+    files: [...PLAYWRIGHT_CORE_FILES, 'README.md'],
   },
   'playwright-core': {
     description: 'A high-level API to automate web browsers',
-    whitelistedBrowsers: [],
-    files: PACKAGE_FILES,
+    browsers: [],
+    files: PLAYWRIGHT_CORE_FILES,
   },
   'playwright-webkit': {
     description: 'A high-level API to automate WebKit',
-    whitelistedBrowsers: ['webkit'],
-    files: PACKAGE_FILES,
+    browsers: ['webkit'],
+    files: PLAYWRIGHT_CORE_FILES,
   },
   'playwright-firefox': {
     description: 'A high-level API to automate Firefox',
-    whitelistedBrowsers: ['firefox'],
-    files: PACKAGE_FILES,
+    browsers: ['firefox'],
+    files: PLAYWRIGHT_CORE_FILES,
   },
   'playwright-chromium': {
     description: 'A high-level API to automate Chromium',
-    whitelistedBrowsers: ['chromium'],
-    files: PACKAGE_FILES,
+    browsers: ['chromium'],
+    files: PLAYWRIGHT_CORE_FILES,
+  },
+  'playwright-electron': {
+    version: '0.4.0', // Manually manage playwright-electron version.
+    description: 'A high-level API to automate Electron',
+    browsers: [],
+    files: PLAYWRIGHT_CORE_FILES,
   },
 };
 
@@ -108,26 +114,26 @@ if (!package) {
     await copyToPackage(file);
 
   // 4. Generate package.json
-  const packageJSON = require(path.join(ROOT_PATH, 'package.json'));
+  const pwInternalJSON = require(path.join(ROOT_PATH, 'package.json'));
   await writeToPackage('package.json', JSON.stringify({
     name: packageName,
-    version: packageJSON.version,
+    version: package.version || pwInternalJSON.version,
     description: package.description,
-    repository: packageJSON.repository,
-    engines: packageJSON.engines,
-    homepage: packageJSON.homepage,
+    repository: pwInternalJSON.repository,
+    engines: pwInternalJSON.engines,
+    homepage: pwInternalJSON.homepage,
     main: 'index.js',
     scripts: {
       install: 'node install.js',
     },
-    author: packageJSON.author,
-    license: packageJSON.license,
-    dependencies: packageJSON.dependencies
+    author: pwInternalJSON.author,
+    license: pwInternalJSON.license,
+    dependencies: pwInternalJSON.dependencies
   }, null, 2));
 
   // 5. Generate browsers.json
   const browsersJSON = require(path.join(ROOT_PATH, 'browsers.json'));
-  browsersJSON.browsers = browsersJSON.browsers.filter(browser => package.whitelistedBrowsers.includes(browser.name));
+  browsersJSON.browsers = browsersJSON.browsers.filter(browser => package.browsers.includes(browser.name));
   await writeToPackage('browsers.json', JSON.stringify(browsersJSON, null, 2));
 
   // 6. Run npm pack

packages/playwright-electron/install.js

@@ -0,0 +1,17 @@
+/**
+ * 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.
+ */
+
+/* NOTE: playwright-electron does not install browsers by design. */