fixup! perf(@angular/build): optimize library dts bundling and enable dts tree-shaking

Author: alan-agius4

packages/angular/build/src/builders/library/pipeline/bundler_spec.ts

@@ -100,17 +100,31 @@ describe('bundleEntryPoints', () => {
       createOptions(entryPoints),
     );
 
-    const primaryDtsFile = output.filesToEmit.find((f) => f.path === 'types/my-lib.d.ts');
-    expect(primaryDtsFile).toBeDefined();
-    expect(String(primaryDtsFile?.contents)).toContain('PublicA');
-    expect(String(primaryDtsFile?.contents)).not.toContain('UnexportedInternalA');
+    expect(output.filesToEmit).toContain(
+      jasmine.objectContaining({
+        path: 'types/my-lib.d.ts',
+        contents: jasmine.stringContaining('PublicA'),
+      }),
+    );
+    expect(output.filesToEmit).not.toContain(
+      jasmine.objectContaining({
+        path: 'types/my-lib.d.ts',
+        contents: jasmine.stringContaining('UnexportedInternalA'),
+      }),
+    );
 
-    const secondaryDtsFile = output.filesToEmit.find(
-      (f) => f.path === 'types/my-lib-secondary.d.ts',
+    expect(output.filesToEmit).toContain(
+      jasmine.objectContaining({
+        path: 'types/my-lib-secondary.d.ts',
+        contents: jasmine.stringContaining('PublicB'),
+      }),
+    );
+    expect(output.filesToEmit).not.toContain(
+      jasmine.objectContaining({
+        path: 'types/my-lib-secondary.d.ts',
+        contents: jasmine.stringContaining('UnexportedInternalB'),
+      }),
     );
-    expect(secondaryDtsFile).toBeDefined();
-    expect(String(secondaryDtsFile?.contents)).toContain('PublicB');
-    expect(String(secondaryDtsFile?.contents)).not.toContain('UnexportedInternalB');
   });
 
   it('should preserve legal comments in emitted FESM2022 .mjs bundles', async () => {
@@ -141,8 +155,11 @@ describe('bundleEntryPoints', () => {
       createOptions(entryPoints),
     );
 
-    const mjsFile = output.filesToEmit.find((f) => f.path === 'fesm2022/my-lib.mjs');
-    expect(mjsFile).toBeDefined();
-    expect(String(mjsFile?.contents)).toContain('/*! @license MIT Custom Header */');
+    expect(output.filesToEmit).toContain(
+      jasmine.objectContaining({
+        path: 'fesm2022/my-lib.mjs',
+        contents: jasmine.stringContaining('/*! @license MIT Custom Header */'),
+      }),
+    );
   });
 });