build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/karma-base.conf.js

@@ -0,0 +1,51 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+module.exports = function(config) {
+  config.set({
+    basePath: '',
+    client: {errorpolicy: config.errorpolicy},
+    files: [
+      'node_modules/systemjs/dist/system-polyfills.js', 'node_modules/systemjs/dist/system.src.js',
+      'node_modules/whatwg-fetch/fetch.js',
+      {pattern: 'node_modules/rxjs/**/**/*.js', included: false, watched: false},
+      {pattern: 'node_modules/rxjs/**/**/*.js.map', included: false, watched: false},
+      {pattern: 'node_modules/rxjs/**/*.js', included: false, watched: false},
+      {pattern: 'node_modules/es6-promise/**/*.js', included: false, watched: false},
+      {pattern: 'node_modules/core-js/**/*.js', included: false, watched: false},
+      {pattern: 'node_modules/rxjs/**/*.js.map', included: false, watched: false},
+      {pattern: 'test/assets/**/*.*', watched: true, served: true, included: false},
+      {pattern: 'build/**/*.js.map', watched: true, served: true, included: false},
+      {pattern: 'build/**/*.js', watched: true, served: true, included: false}
+    ],
+
+    plugins: [
+      require('karma-chrome-launcher'), require('karma-firefox-launcher'),
+      require('karma-sourcemap-loader')
+    ],
+
+    preprocessors: {'**/*.js': ['sourcemap']},
+
+    exclude: ['test/microtasks.spec.ts'],
+
+    reporters: ['progress'],
+
+    // port: 9876,
+    colors: true,
+
+    logLevel: config.LOG_INFO,
+
+    browsers: ['Chrome'],
+
+    captureTimeout: 60000,
+    retryLimit: 4,
+
+    autoWatch: true,
+    singleRun: false
+  });
+};