fix(@angular-devkit/build-angular): don't dedupe modules without a na…

…me or version

We should not try to dedupe secondary entrypoints, or modules which don't have a name and a version.

Closes #17967

packages/angular_devkit/build_angular/src/angular-cli-files/plugins/dedupe-module-resolve-plugin.ts

@@ -14,8 +14,8 @@ interface NormalModuleFactoryRequest {
   relativePath: string;
   path: string;
   descriptionFileData: {
-    name: string;
-    version: string;
+    name?: string;
+    version?: string;
   };
   descriptionFileRoot: string;
   descriptionFilePath: string;
@@ -45,6 +45,11 @@ export class DedupeModuleResolvePlugin {
           return;
         }
 
+        // Only try to dedupe modules which have a name and a version
+        if (!request.descriptionFileData.name || !request.descriptionFileData.version) {
+          return;
+        }
+
         const moduleId = request.descriptionFileData.name + '@' + request.descriptionFileData.version;
         const prevResolvedModule = this.modules.get(moduleId);