refactor: move angular source to /packages rather than modules/@angular

packages/core/testing/src/logger.ts

@@ -0,0 +1,28 @@
+/**
+ * @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
+ */
+
+import {Injectable} from '@angular/core';
+
+@Injectable()
+export class Log {
+  logItems: any[];
+
+  constructor() { this.logItems = []; }
+
+  add(value: any /** TODO #9100 */): void { this.logItems.push(value); }
+
+  fn(value: any /** TODO #9100 */) {
+    return (a1: any = null, a2: any = null, a3: any = null, a4: any = null, a5: any = null) => {
+      this.logItems.push(value);
+    };
+  }
+
+  clear(): void { this.logItems = []; }
+
+  result(): string { return this.logItems.join('; '); }
+}