feat: fix this another way

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

packages/cli/config/jest.js

@@ -48,7 +48,7 @@ function getRoleConfig(role) {
     case 'common-library':
     case 'frontend-plugin':
     case 'frontend-plugin-module':
-      return { testEnvironment: require.resolve('./jestJsdomEnvironment') };
+      return { testEnvironment: require.resolve('jest-environment-jsdom') };
     case 'cli':
     case 'backend':
     case 'node-library':
@@ -194,9 +194,16 @@ async function getProjectConfig(targetPath, extraConfig) {
     ...getRoleConfig(closestPkgJson?.backstage?.role),
   };
 
+  options.setupFilesAfterEnv = [];
+
+  if (options.testEnvironment === require.resolve('jest-environment-jsdom')) {
+    // FIXME https://github.com/jsdom/jsdom/issues/1724
+    options.setupFilesAfterEnv.push(require.resolve('cross-fetch/polyfill'));
+  }
+
   // Use src/setupTests.ts as the default location for configuring test env
   if (fs.existsSync(path.resolve(targetPath, 'src/setupTests.ts'))) {
-    options.setupFilesAfterEnv = ['<rootDir>/setupTests.ts'];
+    options.setupFilesAfterEnv.push('<rootDir>/setupTests.ts');
   }
 
   const config = Object.assign(options, ...pkgJsonConfigs);

packages/cli/config/jestJsdomEnvironment.js

@@ -1,30 +0,0 @@
-/*
- * Copyright 2023 The Backstage Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-import JSDOMEnvironment from 'jest-environment-jsdom';
-import { Headers, Request, Response, default as fetch } from 'node-fetch';
-
-// https://github.com/facebook/jest/blob/v29.4.3/website/versioned_docs/version-29.4/Configuration.md#testenvironment-string
-export default class FixJSDOMEnvironment extends JSDOMEnvironment {
-  constructor(...args) {
-    super(...args);
-
-    // FIXME https://github.com/jsdom/jsdom/issues/1724
-    this.global.fetch = fetch;
-    this.global.Headers = Headers;
-    this.global.Request = Request;
-    this.global.Response = Response;
-  }
-}

packages/cli/package.json

@@ -74,6 +74,7 @@
     "chalk": "^4.0.0",
     "chokidar": "^3.3.1",
     "commander": "^9.1.0",
+    "cross-fetch": "^3.1.5",
     "cross-spawn": "^7.0.3",
     "css-loader": "^6.5.1",
     "diff": "^5.0.0",

plugins/airbrake/src/api/ProductionApi.test.ts

@@ -37,8 +37,7 @@ describe('The production Airbrake API', () => {
     );
 
     const groups = await productionApi.fetchGroups('123456');
-
-    expect(groups).toEqual(mockGroupsData);
+    expect(groups).toStrictEqual(mockGroupsData);
   });
 
   it('throws if fetching groups was unsuccessful', async () => {