fix(bazel): ng_package includes transitive .d.ts and flatModuleMetadata (#22499)

Fixes #22419

PR Close #22499

packages/bazel/test/ng_package/example/BUILD.bazel

@@ -17,9 +17,5 @@ ng_package(
     ],
     entry_point = "packages/bazel/test/ng_package/example/index.js",
     secondary_entry_points = ["secondary"],
-    deps = [
-        ":example",
-        # FIXME(#22419)
-        "//packages/bazel/test/ng_package/example/secondary",
-    ],
+    deps = [":example"],
 )

packages/bazel/test/ng_package/example/index.ts

@@ -1 +1,9 @@
+/**
+ * @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
+ */
+
 export * from './mymodule';

packages/bazel/test/ng_package/example/mymodule.ts

@@ -1,4 +1,13 @@
+/**
+ * @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 {NgModule} from '@angular/core';
+import {a} from './secondary/secondarymodule';
 
 @NgModule({})
 export class MyModule {

packages/bazel/test/ng_package/example/secondary/index.ts

@@ -1 +1,9 @@
+/**
+ * @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
+ */
+
 export * from './secondarymodule';

packages/bazel/test/ng_package/example/secondary/secondarymodule.ts

@@ -1,5 +1,15 @@
+/**
+ * @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 {NgModule} from '@angular/core';
 
 @NgModule({})
 export class SecondaryModule {
 }
+
+export const a = 1;

packages/bazel/test/ng_package/example_package.spec.ts

@@ -41,6 +41,16 @@ describe('ng_package', () => {
     expect(shx.ls('-R', 'esm5').stdout.split('\n').filter(n => !!n).sort()).toEqual(expected);
     expect(shx.ls('-R', 'esm2015').stdout.split('\n').filter(n => !!n).sort()).toEqual(expected);
   });
+  it('should have right secondary sources', () => {
+    const expected = [
+      'index.d.ts',
+      'package.json',
+      'secondary.d.ts',
+      'secondary.metadata.json',
+      'secondarymodule.d.ts',
+    ];
+    expect(shx.ls('-R', 'secondary').stdout.split('\n').filter(n => !!n).sort()).toEqual(expected);
+  });
   it('should have main entry point package.json properties set', () => {
     const packageJson = JSON.parse(fs.readFileSync('package.json', UTF8));
     expect(packageJson['main']).toBe('./bundles/example.umd.js');