Migrate to Vitest

Vitest replaces Jest for almost everything, because Jest still cannot
support ESM in a reasonable way. And Jasmine is used to test a CJS
version of the schematics specifically built for testing purpose,
because Vitest does not play nice with that unusual part.

Author: PowerKiKi

.github/workflows/main.yml

@@ -82,7 +82,7 @@ jobs:
           key: ${{ github.sha }}
 
       - name: Test
-        run: yarn test --ci
+        run: yarn test
 
   prettier:
     runs-on: ubuntu-latest

.prettierignore

@@ -7,5 +7,5 @@
 /scripts/
 
 # Needed because TextEncoder workaround must happen before importing @angular-devkit/schematics
-/packages/apollo-angular/schematics/tests/ng-add.spec.ts
-/packages/apollo-angular/schematics/tests/utils.spec.ts
+/packages/apollo-angular/schematics/tests/ng-add.spec.cts
+/packages/apollo-angular/schematics/tests/utils.spec.cts

package.json

@@ -44,24 +44,17 @@
     "@changesets/cli": "^2.27.3",
     "@schematics/angular": "^18.0.1",
     "@theguild/prettier-config": "^2.0.1",
-    "@types/jest": "^29.5.4",
     "@types/node": "^20.12.12",
-    "babel-jest": "^29.6.4",
     "browserlist": "^1.0.1",
-    "cpx2": "^7.0.1",
     "graphql": "^16.8.0",
     "husky": "^9.0.0",
-    "jest": "^29.6.4",
-    "jest-preset-angular": "^14.1.0",
-    "jest-zone-patch": "^0.0.10",
     "lint-staged": "^15.2.5",
     "ng-packagr": "^18.0.0",
     "prettier": "^3.5.3",
     "react": "^18.3.1",
     "rimraf": "^5.0.7",
     "rxjs": "~7.8.0",
     "shelljs": "^0.8.5",
-    "ts-jest": "^29.1.3",
     "tslib": "^2.3.0",
     "typescript": "5.4.5",
     "zone.js": "~0.14.6"

packages/apollo-angular/headers/package.json

@@ -1,5 +1,6 @@
 {
   "name": "apollo-angular/headers",
+  "type": "module",
   "description": "An Apollo Link to easily transform headers from being a key-value object to an instance of HttpHeaders. Great combination with apollo-angular-link-http.",
   "author": {
     "name": "Kamil Kisiela",

packages/apollo-angular/headers/tests/index.spec.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from 'vitest';
 import { HttpHeaders } from '@angular/common/http';
 import { ApolloLink, execute, gql, Observable as LinkObservable } from '@apollo/client/core';
 import { httpHeaders } from '../src';
@@ -13,51 +14,53 @@ const query = gql`
 const data = { heroes: [{ name: 'Foo', __typename: 'Hero' }] };
 
 describe('httpHeaders', () => {
-  test('should turn object into HttpHeaders', (done: jest.DoneCallback) => {
-    const headersLink = httpHeaders();
+  test('should turn object into HttpHeaders', () =>
+    new Promise<void>(done => {
+      const headersLink = httpHeaders();
 
-    const mockLink = new ApolloLink(operation => {
-      const { headers } = operation.getContext();
+      const mockLink = new ApolloLink(operation => {
+        const { headers } = operation.getContext();
 
-      expect(headers instanceof HttpHeaders).toBe(true);
-      expect(headers.get('Authorization')).toBe('Bearer Foo');
+        expect(headers instanceof HttpHeaders).toBe(true);
+        expect(headers.get('Authorization')).toBe('Bearer Foo');
 
-      return LinkObservable.of({ data });
-    });
+        return LinkObservable.of({ data });
+      });
 
-    const link = headersLink.concat(mockLink);
+      const link = headersLink.concat(mockLink);
 
-    execute(link, {
-      query,
-      context: {
-        headers: {
-          Authorization: 'Bearer Foo',
+      execute(link, {
+        query,
+        context: {
+          headers: {
+            Authorization: 'Bearer Foo',
+          },
         },
-      },
-    }).subscribe(result => {
-      expect(result.data).toEqual(data);
-      done();
-    });
-  });
+      }).subscribe(result => {
+        expect(result.data).toEqual(data);
+        done();
+      });
+    }));
 
-  test('should not set headers when not defined', (done: jest.DoneCallback) => {
-    const headersLink = httpHeaders();
+  test('should not set headers when not defined', () =>
+    new Promise<void>(done => {
+      const headersLink = httpHeaders();
 
-    const mockLink = new ApolloLink(operation => {
-      const { headers } = operation.getContext();
+      const mockLink = new ApolloLink(operation => {
+        const { headers } = operation.getContext();
 
-      expect(headers).toBeUndefined();
+        expect(headers).toBeUndefined();
 
-      return LinkObservable.of({ data });
-    });
+        return LinkObservable.of({ data });
+      });
 
-    const link = headersLink.concat(mockLink);
+      const link = headersLink.concat(mockLink);
 
-    execute(link, {
-      query,
-    }).subscribe(result => {
-      expect(result.data).toEqual(data);
-      done();
-    });
-  });
+      execute(link, {
+        query,
+      }).subscribe(result => {
+        expect(result.data).toEqual(data);
+        done();
+      });
+    }));
 });

packages/apollo-angular/headers/tsconfig.json

@@ -3,9 +3,9 @@
   "compilerOptions": {
     "rootDir": ".",
     "baseUrl": ".",
-    "outDir": "../build/http",
+    "outDir": "../build/testing",
     "paths": {
-      "apollo-angular": ["../"]
+      "apollo-angular": ["../src"]
     }
   },
   "include": ["src/**/*.ts", "tests/**/*.ts"]

packages/apollo-angular/http/package.json

@@ -1,5 +1,6 @@
 {
   "name": "apollo-angular/http",
+  "type": "module",
   "description": "An Apollo Link to allow sending an http request per operation.",
   "author": {
     "name": "Kamil Kisiela",