chore: adding some more useful state to the context

Signed-off-by: blam <ben@blam.sh>

plugins/scaffolder/src/alpha/api/FormDecoratorsApi.ts

@@ -20,14 +20,16 @@ import { ScaffolderFormDecorator } from '@backstage/plugin-scaffolder-react/alph
 export class DefaultScaffolderFormDecoratorsApi
   implements ScaffolderFormDecoratorsApi
 {
-  constructor(
+  private constructor(
     private readonly options: {
       decorators: Array<ScaffolderFormDecorator>;
     },
   ) {}
 
-  static create(options: { decorators: ScaffolderFormDecorator[] }) {
-    return new DefaultScaffolderFormDecoratorsApi(options);
+  static create(options?: { decorators: ScaffolderFormDecorator[] }) {
+    return new DefaultScaffolderFormDecoratorsApi(
+      options ?? { decorators: [] },
+    );
   }
 
   async getFormDecorators(): Promise<ScaffolderFormDecorator[]> {

plugins/scaffolder/src/alpha/hooks/useFormDecorators.test.tsx

@@ -71,6 +71,8 @@ describe('useFormDecorators', () => {
     expect(testDecorator).toBeDefined();
 
     await testDecorator.fn({
+      formState: {},
+      setFormState: () => {},
       setSecrets: () => {},
       input: { test: 'input value' },
     });

plugins/scaffolder/src/plugin.tsx

@@ -78,6 +78,8 @@ import {
 } from './components/fields/MyGroupsPicker/MyGroupsPicker';
 import { RepoBranchPicker } from './components/fields/RepoBranchPicker/RepoBranchPicker';
 import { RepoBranchPickerSchema } from './components/fields/RepoBranchPicker/schema';
+import { formDecoratorsApiRef } from './alpha/api/ref';
+import { DefaultScaffolderFormDecoratorsApi } from './alpha/api/FormDecoratorsApi';
 
 /**
  * The main plugin export for the scaffolder.
@@ -102,6 +104,11 @@ export const scaffolderPlugin = createPlugin({
           identityApi,
         }),
     }),
+    createApiFactory({
+      api: formDecoratorsApiRef,
+      deps: {},
+      factory: () => DefaultScaffolderFormDecoratorsApi.create(),
+    }),
   ],
   routes: {
     root: rootRouteRef,