feat!: adopt the global Fetch API

.github/workflows/ci.yml

@@ -16,17 +16,17 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Setup Node.js
+      - name: Set up Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
 
       - uses: pnpm/action-setup@v2
         with:
           version: 7.12
 
       - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+        run: pnpm install
 
       - name: Unit tests
         run: pnpm test:unit
@@ -46,41 +46,3 @@ jobs:
         with:
           name: playwright-report
           path: test/browser/test-results
-
-  # Checks the library's compatibility with different
-  # TypeScript versions to discover type regressions.
-  typescript:
-    runs-on: macos-latest
-    # Skip TypeScript compatibility check on "main".
-    # A merged pull request implies passing "typescript" job.
-    if: github.ref != 'refs/heads/main'
-    strategy:
-      fail-fast: false
-      matrix:
-        ts: ['4.4', '4.5', '4.6', '4.7', '4.8', '4.9', '5.0']
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16
-
-      - uses: pnpm/action-setup@v2
-        with:
-          version: 7.12
-
-      - name: Install dependencies
-        run: pnpm install
-
-      - name: Install TypeScript ${{ matrix.ts }}
-        run: pnpm add typescript@${{ matrix.ts }}
-
-      - name: Build
-        run: pnpm build
-
-      - name: Typings tests
-        run: |
-          pnpm tsc --version
-          pnpm test:ts

.github/workflows/compat.yml

@@ -0,0 +1,78 @@
+name: compat
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  # Validate the package.json exports and emitted CJS/ESM bundles.
+  exports:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v2
+        with:
+          version: 7.12
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Build
+        run: pnpm build
+
+      - name: Validate package.json exports
+        run: pnpm check:exports
+
+      - name: Test modules (Node.js)
+        run: pnpm test:modules:node
+
+      - name: Test modules (browser)
+        run: pnpm test:modules:browser
+
+  # Checks the library's compatibility with different
+  # TypeScript versions to discover type regressions.
+  typescript:
+    runs-on: macos-latest
+    # Skip TypeScript compatibility check on "main".
+    # A merged pull request implies passing "typescript" job.
+    if: github.ref != 'refs/heads/main'
+    strategy:
+      fail-fast: false
+      matrix:
+        ts: ['4.4', '4.5', '4.6', '4.7', '4.8', '4.9', '5.0']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - uses: pnpm/action-setup@v2
+        with:
+          version: 7.12
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Install TypeScript ${{ matrix.ts }}
+        run: pnpm add typescript@${{ matrix.ts }}
+
+      - name: Build
+        run: pnpm build
+
+      - name: Typings tests
+        run: |
+          pnpm tsc --version
+          pnpm test:ts

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           always-auth: true
           registry-url: https://registry.npmjs.org
 

.nvmrc

@@ -1 +1 @@
-v16.14.0
+v18.14.2

CONTRIBUTING.md

@@ -147,19 +147,17 @@ Let's write an example integration test that asserts the interception of a GET r
 
 ```js
 // test/browser/example.mocks.ts
-import { rest, setupWorker } from 'msw'
+import { rest, setupWorker, HttpResponse } from 'msw'
 
 const worker = setupWorker(
-  rest.get('/books', (req, res, ctx) => {
-    return res(
-      ctx.json([
-        {
-          id: 'ea42ffcb-e729-4dd5-bfac-7a5b645cb1da',
-          title: 'The Lord of the Rings',
-          publishedAt: -486867600,
-        },
-      ]),
-    )
+  rest.get('/books', () => {
+    return HttpResponse.json([
+      {
+        id: 'ea42ffcb-e729-4dd5-bfac-7a5b645cb1da',
+        title: 'The Lord of the Rings',
+        publishedAt: -486867600,
+      },
+    ])
   }),
 )
 
@@ -216,24 +214,23 @@ Let's replicate the same `GET /books` integration test in Node.js.
 ```ts
 // test/node/example.test.ts
 import fetch from 'node-fetch'
-import { rest } from 'msw'
+import { rest, HttpResponse } from 'msw'
 import { setupServer } from 'msw/node'
 
 const server = setupServer(
-  rest.get('/books', (req, res, ctx) => {
-    return res(
-      ctx.json([
-        {
-          id: 'ea42ffcb-e729-4dd5-bfac-7a5b645cb1da',
-          title: 'The Lord of the Rings',
-          publishedAt: -486867600,
-        },
-      ]),
-    )
+  rest.get('/books', () => {
+    return HttpResponse.json([
+      {
+        id: 'ea42ffcb-e729-4dd5-bfac-7a5b645cb1da',
+        title: 'The Lord of the Rings',
+        publishedAt: -486867600,
+      },
+    ])
   }),
 )
 
 beforeAll(() => server.listen())
+
 afterAll(() => server.close())
 
 test('returns a mocked response', async () => {