build: add release output validation for manifest paths

Ensures that angular/angular@9581658 fixed all instances, and
ensures that we don't regress on the components side.

tools/release/release-output/check-package.ts

@@ -9,12 +9,12 @@ import {
   checkMaterialPackage,
   checkPackageJsonFile,
   checkPackageJsonMigrations,
-  checkReleaseBundle,
+  checkJavaScriptOutput,
   checkTypeDefinitionFile
 } from './output-validations';
 
-/** Glob that matches all JavaScript bundle files within a release package. */
-const releaseBundlesGlob = '+(fesm5|fesm2015|esm5|esm2015|bundles)/*.js';
+/** Glob that matches all JavaScript files within a release package. */
+const releaseJsFilesGlob = '+(fesm5|fesm2015|esm5|esm2015|bundles)/**/*.js';
 
 /** Glob that matches all TypeScript definition files within a release package. */
 const releaseTypeDefinitionsGlob = '**/*.d.ts';
@@ -46,14 +46,14 @@ export function checkReleasePackage(
     failures.set(message, filePaths);
   };
 
-  const bundlePaths = glob(releaseBundlesGlob, {cwd: packagePath, absolute: true});
+  const jsFiles = glob(releaseJsFilesGlob, {cwd: packagePath, absolute: true});
   const typeDefinitions = glob(releaseTypeDefinitionsGlob, {cwd: packagePath, absolute: true});
   const packageJsonFiles = glob(packageJsonFilesGlob, {cwd: packagePath, absolute: true});
 
   // We want to walk through each bundle within the current package and run
   // release validations that ensure that the bundles are not invalid.
-  bundlePaths.forEach(bundlePath => {
-    checkReleaseBundle(bundlePath).forEach(message => addFailure(message, bundlePath));
+  jsFiles.forEach(bundlePath => {
+    checkJavaScriptOutput(bundlePath).forEach(message => addFailure(message, bundlePath));
   });
 
   // Run output validations for all TypeScript definition files within the release output.

tools/release/release-output/output-validations.ts

@@ -11,6 +11,9 @@ const inlineStylesSourcemapRegex = /styles: ?\[["'].*sourceMappingURL=.*["']/;
 /** RegExp that matches Angular component metadata properties that refer to external resources. */
 const externalReferencesRegex = /(templateUrl|styleUrls): *["'[]/;
 
+/** RegExp that matches common Bazel manifest paths in this workspace */
+const bazelManifestPath = /(angular_material|external)\//;
+
 /**
  * List of fields which are mandatory in entry-point "package.json" files and refer
  * to files in the release output.
@@ -19,21 +22,25 @@ const packageJsonPathFields =
     ['main', 'module', 'typings', 'es2015', 'fesm5', 'fesm2015', 'esm5', 'esm2015'];
 
 /**
- * Checks the specified release bundle and ensures that it does not contain
- * any external resource URLs.
+ * Checks the specified JavaScript file and ensures that it does not
+ * contain any external resource URLs, or Bazel manifest paths.
  */
-export function checkReleaseBundle(bundlePath: string): string[] {
-  const bundleContent = readFileSync(bundlePath, 'utf8');
+export function checkJavaScriptOutput(filePath: string): string[] {
+  const fileContent = readFileSync(filePath, 'utf8');
   const failures: string[] = [];
 
-  if (inlineStylesSourcemapRegex.exec(bundleContent) !== null) {
+  if (inlineStylesSourcemapRegex.exec(fileContent) !== null) {
     failures.push('Found sourcemap references in component styles.');
   }
 
-  if (externalReferencesRegex.exec(bundleContent) !== null) {
+  if (externalReferencesRegex.exec(fileContent) !== null) {
     failures.push('Found external component resource references');
   }
 
+  if (bazelManifestPath.exec(fileContent) !== null) {
+    failures.push('Found Bazel manifest path in output.');
+  }
+
   return failures;
 }