feat: Create NPM node (#6177)

packages/nodes-base/test/nodes/FakeCredentialsMap.ts

@@ -1,10 +1,8 @@
-import type { IDataObject } from 'n8n-workflow';
-
 // If your test needs data from credentials, you can add it here.
 // as JSON.stringify({ id: 'credentials_ID', name: 'credentials_name' }) for specific credentials
 // or as 'credentials_type' for all credentials of that type
 // expected keys for credentials can be found in packages/nodes-base/credentials/[credentials_type].credentials.ts
-export const FAKE_CREDENTIALS_DATA: IDataObject = {
+export const FAKE_CREDENTIALS_DATA = {
 	[JSON.stringify({ id: '20', name: 'Airtable account' })]: {
 		apiKey: 'key456',
 	},
@@ -15,6 +13,10 @@ export const FAKE_CREDENTIALS_DATA: IDataObject = {
 		apiKey: 'key123',
 		baseUrl: 'https://test.app.n8n.cloud/api/v1',
 	},
+	npmApi: {
+		accessToken: 'fake-npm-access-token',
+		registryUrl: 'https://fake.npm.registry',
+	},
 	totpApi: {
 		label: 'GitHub:john-doe',
 		secret: 'BVDRSBXQB2ZEL5HE',
@@ -24,4 +26,4 @@ export const FAKE_CREDENTIALS_DATA: IDataObject = {
 		accessKeyId: 'key',
 		secretAccessKey: 'secret',
 	},
-};
+} as const;