chore(scaffolder): fix the exporting of the FilePreparer so we can actually setup a scaffolder in the backend

packages/backend/src/plugins/scaffolder.ts

@@ -17,11 +17,17 @@
 import {
   CookieCutter,
   createRouter,
+  FilePreparer,
+  Preparers,
 } from '@backstage/plugin-scaffolder-backend';
 import type { PluginEnvironment } from '../types';
 
 export default async function createPlugin({ logger }: PluginEnvironment) {
   const templater = new CookieCutter();
+  const filePreparer = new FilePreparer();
+  const preparers = new Preparers();
 
-  return await createRouter({ storage: null, templater, logger });
+  preparers.register('file', filePreparer);
+
+  return await createRouter({ preparers, templater, logger });
 }

plugins/scaffolder-backend/src/scaffolder/prepare/index.ts

@@ -16,3 +16,4 @@
 export * from './preparers';
 export * from './types';
 export * from './helpers';
+export * from './file';