techdocs: do not use cross-fetch in backend

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

.changeset/beige-feet-tap.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs-backend': patch
+---
+
+Do not use cross-fetch in the backend

plugins/techdocs-backend/package.json

@@ -41,7 +41,6 @@
     "@backstage/search-common": "^0.2.2",
     "@backstage/techdocs-common": "^0.11.7",
     "@types/express": "^4.17.6",
-    "cross-fetch": "^3.1.5",
     "dockerode": "^3.3.1",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",

plugins/techdocs-backend/src/service/DocsSynchronizer.test.ts

@@ -31,7 +31,7 @@ import { DocsSynchronizer, DocsSynchronizerSyncOpts } from './DocsSynchronizer';
 
 jest.mock('../DocsBuilder');
 
-jest.mock('cross-fetch', () => ({
+jest.mock('node-fetch', () => ({
   __esModule: true,
   default: async () => {
     return {

plugins/techdocs-backend/src/service/DocsSynchronizer.ts

@@ -24,7 +24,7 @@ import {
   PreparerBuilder,
   PublisherBase,
 } from '@backstage/techdocs-common';
-import fetch from 'cross-fetch';
+import fetch from 'node-fetch';
 import { PassThrough } from 'stream';
 import * as winston from 'winston';
 import { TechDocsCache } from '../cache';