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

packages/core/src/di.ts

@@ -0,0 +1,24 @@
+/**
+ * @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
+ * @description
+ * The `di` module provides dependency injection container services.
+ */
+
+export * from './di/metadata';
+
+export {forwardRef, resolveForwardRef, ForwardRefFn} from './di/forward_ref';
+
+export {Injector} from './di/injector';
+export {ReflectiveInjector} from './di/reflective_injector';
+export {Provider, TypeProvider, ValueProvider, ClassProvider, ExistingProvider, FactoryProvider} from './di/provider';
+export {ResolvedReflectiveFactory, ResolvedReflectiveProvider} from './di/reflective_provider';
+export {ReflectiveKey} from './di/reflective_key';
+export {InjectionToken, OpaqueToken} from './di/injection_token';