Merge pull request #17396 from backstage/rugvip/scaffolder

scaffolder-backend: make alpha options optional

plugins/scaffolder-backend/alpha-api-report.md

@@ -40,7 +40,7 @@ export const scaffolderConditions: Conditions<{
 
 // @alpha
 export const scaffolderPlugin: (
-  options: ScaffolderPluginOptions,
+  options?: ScaffolderPluginOptions | undefined,
 ) => BackendFeature;
 
 // @alpha

plugins/scaffolder-backend/src/ScaffolderPlugin.ts

@@ -67,7 +67,7 @@ class ScaffolderActionsExtensionPointImpl
  * @alpha
  */
 export const scaffolderPlugin = createBackendPlugin(
-  (options: ScaffolderPluginOptions) => ({
+  (options?: ScaffolderPluginOptions) => ({
     pluginId: 'scaffolder',
     register(env) {
       const actionsExtensions = new ScaffolderActionsExtensionPointImpl();
@@ -101,10 +101,10 @@ export const scaffolderPlugin = createBackendPlugin(
             taskBroker,
             taskWorkers,
             additionalTemplateGlobals,
-          } = options;
+          } = options ?? {};
           const log = loggerToWinstonLogger(logger);
 
-          const actions = options.actions || [
+          const actions = options?.actions || [
             ...actionsExtensions.actions,
             ...createBuiltinActions({
               integrations: ScmIntegrations.fromConfig(config),

plugins/scaffolder-backend/src/scaffolder/tasks/TaskWorker.ts

@@ -70,11 +70,13 @@ export type CreateWorkerOptions = {
  * @public
  */
 export class TaskWorker {
-  private constructor(private readonly options: TaskWorkerOptions) {}
+  private taskQueue: PQueue;
 
-  private taskQueue: PQueue = new PQueue({
-    concurrency: this.options.concurrentTasksLimit,
-  });
+  private constructor(private readonly options: TaskWorkerOptions) {
+    this.taskQueue = new PQueue({
+      concurrency: options.concurrentTasksLimit,
+    });
+  }
 
   static async create(options: CreateWorkerOptions): Promise<TaskWorker> {
     const {