Publish Canary

- @vercel/build-utils@3.0.2-canary.0
 - vercel@24.2.4-canary.0
 - @vercel/client@11.0.3-canary.0
 - @vercel/frameworks@0.9.1-canary.0
 - @vercel/go@1.4.3-canary.0
 - @vercel/next@2.8.66-canary.0
 - @vercel/node-bridge@2.2.2-canary.0
 - @vercel/node@1.15.3-canary.0
 - @vercel/python@2.3.3-canary.0
 - @vercel/redwood@0.8.3-canary.0
 - @vercel/routing-utils@1.13.3-canary.0
 - @vercel/ruby@1.3.6-canary.0
 - @vercel/static-build@0.25.2-canary.0
 - @vercel/static-config@1.0.1-canary.0

.eslintignore

@@ -19,6 +19,10 @@ packages/cli/src/util/dev/templates/*.ts
 packages/client/tests/fixtures
 packages/client/lib
 
+# next
+packages/next/test/integration/middleware
+packages/next/test/integration/middleware-eval
+
 # node-bridge
 packages/node-bridge/bridge.js
 packages/node-bridge/launcher.js

.github/workflows/test-integration-cli.yml

@@ -18,6 +18,10 @@ jobs:
         os: [ubuntu-latest]
         node: [12]
     runs-on: ${{ matrix.os }}
+    env:
+      TURBO_REMOTE_ONLY: true
+      TURBO_TEAM: vercel
+      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
     steps:
       - uses: actions/setup-go@v2
         with:

.github/workflows/test-integration-dev.yml

@@ -18,6 +18,10 @@ jobs:
         os: [ubuntu-latest, macos-latest]
         node: [12]
     runs-on: ${{ matrix.os }}
+    env:
+      TURBO_REMOTE_ONLY: true
+      TURBO_TEAM: vercel
+      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
     steps:
       - uses: actions/setup-go@v2
         with:

.github/workflows/test-integration-once.yml

@@ -1,35 +0,0 @@
-name: E2E
-
-on:
-  push:
-    branches:
-    - main
-    tags:
-    - '!*'
-  pull_request:
-
-jobs:
-  test:
-    name: E2E
-    timeout-minutes: 120
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/setup-go@v2
-        with:
-          go-version: '1.13.15'
-      - uses: actions/setup-node@v2
-        with:
-          node-version: 12
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 100
-      - run: git --version
-      - run: git fetch origin main --depth=100
-      - run: git fetch origin ${{ github.ref }} --depth=100
-      - run: git diff origin/main...HEAD --name-only
-      - run: yarn install --network-timeout 1000000
-      - run: yarn run build
-      - run: yarn test-integration-once
-        env:
-          VERCEL_TEAM_TOKEN: ${{ secrets.VERCEL_TEAM_TOKEN }}
-          VERCEL_REGISTRATION_URL: ${{ secrets.VERCEL_REGISTRATION_URL }}

.github/workflows/test-unit.yml

@@ -18,6 +18,10 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
         node: [12]
     runs-on: ${{ matrix.os }}
+    env:
+      TURBO_REMOTE_ONLY: true
+      TURBO_TEAM: vercel
+      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
     steps:
       - uses: actions/setup-go@v2
         with:
@@ -40,4 +44,4 @@ jobs:
       - run: yarn workspace vercel run coverage
         if: matrix.os == 'ubuntu-latest' && matrix.node == 12 # only run coverage once
         env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/test.yml

@@ -0,0 +1,84 @@
+name: Tests
+
+on:
+  push:
+    branches:
+    - main
+    tags:
+    - '!*'
+  pull_request:
+
+env:
+  NODE_VERSION: '14'
+
+jobs:
+  setup:
+    name: Find Changes
+    runs-on: ubuntu-latest
+    outputs:
+      tests: ${{ steps['set-tests'].outputs['tests'] }}
+    steps:
+      - uses: actions/checkout@v2
+      - run: git --version
+      - run: git fetch origin main
+      - uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: 'yarn'
+      - run: yarn install --network-timeout 1000000
+
+      - id: set-tests
+        run: |
+          TESTS_ARRAY=$(node utils/chunk-tests.js $SCRIPT_NAME)
+          echo "Files to test:"
+          echo "$TESTS_ARRAY"
+          echo "::set-output name=tests::$TESTS_ARRAY"
+
+  test:
+    timeout-minutes: 120
+    runs-on: ${{ matrix.runner }}
+    name: ${{matrix.scriptName}} (${{matrix.packageName}}, ${{matrix.chunkNumber}}, ${{ matrix.runner }})
+    if: ${{ needs.setup.outputs['tests'] != '[]' }}
+    env:
+      TURBO_REMOTE_ONLY: true
+      TURBO_TEAM: vercel
+      TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
+    needs:
+      - setup
+    strategy:
+      fail-fast: false
+      matrix:
+        include: ${{ fromJson(needs.setup.outputs['tests']) }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.13.15'
+      - uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: 'yarn'
+      - run: yarn install --network-timeout 1000000
+
+      - name: Build ${{matrix.packageName}} and all its dependencies
+        run: yarn turbo run build --cache-dir=".turbo" --scope=${{matrix.packageName}} --include-dependencies --no-deps
+        env:
+          FORCE_COLOR: '1'
+      - name: Test ${{matrix.packageName}}
+        run: node_modules/.bin/turbo run test --cache-dir=".turbo" --scope=${{matrix.packageName}} --no-deps -- ${{ join(matrix.testPaths, ' ') }}
+        shell: bash
+        env:
+          VERCEL_TEAM_TOKEN: ${{ secrets.VERCEL_TEAM_TOKEN }}
+          VERCEL_REGISTRATION_URL: ${{ secrets.VERCEL_REGISTRATION_URL }}
+          FORCE_COLOR: '1'
+
+  conclusion:
+    needs:
+      - test
+    runs-on: ubuntu-latest
+    name: E2E
+    steps:
+      - name: Done
+        run: echo "Done."

examples/nuxtjs/.vercelignore

@@ -2,3 +2,4 @@ README.md
 .nuxt
 node_modules
 *.log
+.output

examples/solidstart/.gitignore

@@ -2,7 +2,6 @@ dist
 worker
 .solid
 .vercel
-.output
 
 # dependencies
 /node_modules

examples/solidstart/README.md

@@ -1,6 +1,6 @@
 # SolidStart
 
-This directory is a brief example of a [SolidStart](https://github.com/ryansolid/solid-startp) site that can be deployed to Vercel with zero configuration.
+This directory is a brief example of a [SolidStart](https://github.com/ryansolid/solid-start) site that can be deployed to Vercel with zero configuration.
 
 ## Deploy Your Own
 

package.json

@@ -44,10 +44,10 @@
     "vercel-build": "yarn build && cd api && node -r ts-eager/register ./_lib/script/build.ts",
     "pre-commit": "lint-staged",
     "test": "jest --rootDir=\"test\" --testPathPattern=\"\\.test.js\"",
-    "test-unit": "yarn test && node utils/run.js test-unit",
-    "test-integration-cli": "node utils/run.js test-integration-cli",
-    "test-integration-once": "node utils/run.js test-integration-once",
-    "test-integration-dev": "node utils/run.js test-integration-dev",
+    "test-unit": "yarn test && turbo run test-unit",
+    "test-integration-cli": "turbo run test-integration-cli",
+    "test-integration-once": "turbo run test-integration-once",
+    "test-integration-dev": "turbo run test-integration-dev",
     "lint": "eslint . --ext .ts,.js",
     "prepare": "husky install"
   },

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "3.0.1",
+  "version": "3.0.2-canary.0",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",
@@ -12,8 +12,9 @@
   },
   "scripts": {
     "build": "node build",
-    "test-unit": "jest --env node --verbose --runInBand --bail test/unit.*test.*",
-    "test-integration-once": "jest --env node --verbose --runInBand --bail test/integration.test.ts",
+    "test": "jest --env node --verbose --runInBand --bail",
+    "test-unit": "yarn test test/unit.*test.*",
+    "test-integration-once": "yarn test test/integration.test.ts",
     "prepublishOnly": "node build"
   },
   "devDependencies": {
@@ -30,7 +31,7 @@
     "@types/node-fetch": "^2.1.6",
     "@types/semver": "6.0.0",
     "@types/yazl": "2.4.2",
-    "@vercel/frameworks": "0.9.0",
+    "@vercel/frameworks": "0.9.1-canary.0",
     "@vercel/ncc": "0.24.0",
     "aggregate-error": "3.0.1",
     "async-retry": "1.2.3",

packages/build-utils/src/fs/node-version.ts

@@ -6,7 +6,12 @@ import debug from '../debug';
 const allOptions = [
   { major: 16, range: '16.x', runtime: 'nodejs16.x' },
   { major: 14, range: '14.x', runtime: 'nodejs14.x' },
-  { major: 12, range: '12.x', runtime: 'nodejs12.x' },
+  {
+    major: 12,
+    range: '12.x',
+    runtime: 'nodejs12.x',
+    discontinueDate: new Date('2022-08-09'),
+  },
   {
     major: 10,
     range: '10.x',

packages/build-utils/test/unit.test.ts

@@ -296,17 +296,20 @@ it('should get latest node version', async () => {
 it('should throw for discontinued versions', async () => {
   // Mock a future date so that Node 8 and 10 become discontinued
   const realDateNow = Date.now.bind(global.Date);
-  global.Date.now = () => new Date('2021-05-01').getTime();
+  global.Date.now = () => new Date('2022-09-01').getTime();
 
   expect(getSupportedNodeVersion('8.10.x', false)).rejects.toThrow();
   expect(getSupportedNodeVersion('8.10.x', true)).rejects.toThrow();
   expect(getSupportedNodeVersion('10.x', false)).rejects.toThrow();
   expect(getSupportedNodeVersion('10.x', true)).rejects.toThrow();
+  expect(getSupportedNodeVersion('12.x', false)).rejects.toThrow();
+  expect(getSupportedNodeVersion('12.x', true)).rejects.toThrow();
 
   const discontinued = getDiscontinuedNodeVersions();
-  expect(discontinued.length).toBe(2);
-  expect(discontinued[0]).toHaveProperty('range', '10.x');
-  expect(discontinued[1]).toHaveProperty('range', '8.10.x');
+  expect(discontinued.length).toBe(3);
+  expect(discontinued[0]).toHaveProperty('range', '12.x');
+  expect(discontinued[1]).toHaveProperty('range', '10.x');
+  expect(discontinued[2]).toHaveProperty('range', '8.10.x');
 
   global.Date.now = realDateNow;
 });
@@ -324,9 +327,19 @@ it('should warn for deprecated versions, soon to be discontinued', async () => {
     'major',
     10
   );
+  expect(await getSupportedNodeVersion('12.x', false)).toHaveProperty(
+    'major',
+    12
+  );
+  expect(await getSupportedNodeVersion('12.x', true)).toHaveProperty(
+    'major',
+    12
+  );
   expect(warningMessages).toStrictEqual([
     'Error: Node.js version 10.x is deprecated. Deployments created on or after 2021-04-20 will fail to build. Please set "engines": { "node": "16.x" } in your `package.json` file to use Node.js 16. This change is the result of a decision made by an upstream infrastructure provider (AWS).',
     'Error: Node.js version 10.x is deprecated. Deployments created on or after 2021-04-20 will fail to build. Please set Node.js Version to 16.x in your Project Settings to use Node.js 16. This change is the result of a decision made by an upstream infrastructure provider (AWS).',
+    'Error: Node.js version 12.x is deprecated. Deployments created on or after 2022-08-09 will fail to build. Please set "engines": { "node": "16.x" } in your `package.json` file to use Node.js 16. This change is the result of a decision made by an upstream infrastructure provider (AWS).',
+    'Error: Node.js version 12.x is deprecated. Deployments created on or after 2022-08-09 will fail to build. Please set Node.js Version to 16.x in your Project Settings to use Node.js 16. This change is the result of a decision made by an upstream infrastructure provider (AWS).',
   ]);
 
   global.Date.now = realDateNow;

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "24.2.2",
+  "version": "24.2.4-canary.0",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -12,8 +12,8 @@
   },
   "scripts": {
     "preinstall": "node ./scripts/preinstall.js",
-    "test": "jest",
-    "test-unit": "jest --coverage --verbose",
+    "test": "jest --env node --verbose --runInBand --bail",
+    "test-unit": "yarn test",
     "test-integration-cli": "rimraf test/fixtures/integration && ava test/integration.js --serial --fail-fast --verbose",
     "test-integration-dev": "ava test/dev/integration.js --serial --fail-fast --verbose",
     "prepublishOnly": "yarn build",
@@ -43,11 +43,11 @@
     "node": ">= 12"
   },
   "dependencies": {
-    "@vercel/build-utils": "3.0.1",
-    "@vercel/go": "1.4.2",
-    "@vercel/node": "1.15.2",
-    "@vercel/python": "2.3.2",
-    "@vercel/ruby": "1.3.5",
+    "@vercel/build-utils": "3.0.2-canary.0",
+    "@vercel/go": "1.4.3-canary.0",
+    "@vercel/node": "1.15.3-canary.0",
+    "@vercel/python": "2.3.3-canary.0",
+    "@vercel/ruby": "1.3.6-canary.0",
     "update-notifier": "4.1.0"
   },
   "devDependencies": {
@@ -90,8 +90,8 @@
     "@types/update-notifier": "5.1.0",
     "@types/which": "1.3.2",
     "@types/write-json-file": "2.2.1",
-    "@vercel/client": "11.0.2",
-    "@vercel/frameworks": "0.9.0",
+    "@vercel/client": "11.0.3-canary.0",
+    "@vercel/frameworks": "0.9.1-canary.0",
     "@vercel/ncc": "0.24.0",
     "@zeit/fun": "0.11.2",
     "@zeit/source-map-support": "0.6.2",

packages/cli/scripts/build.ts

@@ -13,7 +13,7 @@ async function createConstants() {
 export const GA_TRACKING_ID: string | undefined = ${envToString(
     'GA_TRACKING_ID'
   )};
-export const SENTRY_DSN: string | undefined =  ${envToString('SENTRY_DSN')};
+export const SENTRY_DSN: string | undefined = ${envToString('SENTRY_DSN')};
 `;
   await writeFile(filename, contents, 'utf8');
 }

packages/cli/src/util/projects/link.ts

@@ -8,7 +8,7 @@ import { promisify } from 'util';
 
 import getProjectByIdOrName from '../projects/get-project-by-id-or-name';
 import Client from '../client';
-import { ProjectNotFound } from '../errors-ts';
+import { InvalidToken, ProjectNotFound } from '../errors-ts';
 import getUser from '../get-user';
 import getTeamById from '../teams/get-team-by-id';
 import { Output } from '../output';
@@ -150,15 +150,20 @@ export async function getLinkedProject(
       getProjectByIdOrName(client, link.projectId, link.orgId),
     ]);
   } catch (err) {
-    if (err?.status === 403) {
+    if (err && err.status === 403) {
       output.stopSpinner();
-      throw new NowBuildError({
-        message: `Could not retrieve Project Settings. To link your Project, remove the ${outputCode(
-          VERCEL_DIR
-        )} directory and deploy again.`,
-        code: 'PROJECT_UNAUTHORIZED',
-        link: 'https://vercel.link/cannot-load-project-settings',
-      });
+
+      if (err.missingToken) {
+        throw new InvalidToken();
+      } else {
+        throw new NowBuildError({
+          message: `Could not retrieve Project Settings. To link your Project, remove the ${outputCode(
+            VERCEL_DIR
+          )} directory and deploy again.`,
+          code: 'PROJECT_UNAUTHORIZED',
+          link: 'https://vercel.link/cannot-load-project-settings',
+        });
+      }
     }
 
     // Not a special case 403, we should still throw it

packages/cli/test/integration.js

@@ -3495,6 +3495,24 @@ test('reject deploying with wrong team .vercel config', async t => {
   );
 });
 
+test('reject deploying with invalid token', async t => {
+  const directory = fixture('unauthorized-vercel-config');
+  const { exitCode, stderr, stdout } = await execa(
+    binaryPath,
+    [...defaultArgs, '--confirm'],
+    {
+      cwd: directory,
+      reject: false,
+    }
+  );
+
+  t.is(exitCode, 1, formatOutput({ stderr, stdout }));
+  t.regex(
+    stderr,
+    /Error! Could not retrieve Project Settings\. To link your Project, remove the `\.vercel` directory and deploy again\./g
+  );
+});
+
 test('[vc link] should show prompts to set up project', async t => {
   const dir = fixture('project-link-zeroconf');
   const projectName = `project-link-zeroconf-${

packages/cli/test/mocks/team.ts

@@ -1,7 +1,16 @@
 import chance from 'chance';
 import { client } from './client';
 
-export function useTeams(teamId?: string) {
+export function useTeams(
+  teamId?: string,
+  options: {
+    failMissingToken?: boolean;
+    failNoAccess?: boolean;
+  } = {
+    failMissingToken: false,
+    failNoAccess: false,
+  }
+) {
   const id = teamId || chance().guid();
   const teams = [
     {
@@ -16,6 +25,25 @@ export function useTeams(teamId?: string) {
 
   for (let team of teams) {
     client.scenario.get(`/teams/${team.id}`, (_req, res) => {
+      if (options.failMissingToken) {
+        res.statusCode = 403;
+        res.json({
+          message: 'The request is missing an authentication token',
+          code: 'forbidden',
+          missingToken: true,
+        });
+        return;
+      }
+
+      if (options.failNoAccess) {
+        res.statusCode = 403;
+        res.send({
+          code: 'team_unauthorized',
+          message: 'You are not authorized',
+        });
+        return;
+      }
+
       res.json(team);
     });
   }

packages/cli/test/util/dev/parse-listen.test.ts

@@ -1,5 +1,7 @@
 import parseListen from '../../../src/util/dev/parse-listen';
 
+const IS_WINDOWS = process.platform === 'win32';
+
 describe('parseListen', () => {
   it('should parse "0" as port 0', () => {
     const result = parseListen('0');
@@ -34,19 +36,27 @@ describe('parseListen', () => {
     expect(result[1]).toEqual('127.0.0.1');
   });
 
-  if (process.platform !== 'win32') {
-    it('should parse "unix:/home/user/server.sock" as UNIX socket file', () => {
-      const result = parseListen('unix:/home/user/server.sock');
-      expect(result).toHaveLength(1);
-      expect(result[0]).toEqual('/home/user/server.sock');
-    });
+  it('should parse "unix:/home/user/server.sock" as UNIX socket file', () => {
+    if (IS_WINDOWS) {
+      console.log('Skipping this test on Windows.');
+      return;
+    }
 
-    it('should parse "pipe:\\\\.\\pipe\\PipeName" as UNIX pipe', () => {
-      const result = parseListen('pipe:\\\\.\\pipe\\PipeName');
-      expect(result).toHaveLength(1);
-      expect(result[0]).toEqual('\\\\.\\pipe\\PipeName');
-    });
-  }
+    const result = parseListen('unix:/home/user/server.sock');
+    expect(result).toHaveLength(1);
+    expect(result[0]).toEqual('/home/user/server.sock');
+  });
+
+  it('should parse "pipe:\\\\.\\pipe\\PipeName" as UNIX pipe', () => {
+    if (IS_WINDOWS) {
+      console.log('Skipping this test on Windows.');
+      return;
+    }
+
+    const result = parseListen('pipe:\\\\.\\pipe\\PipeName');
+    expect(result).toHaveLength(1);
+    expect(result[0]).toEqual('\\\\.\\pipe\\PipeName');
+  });
 
   it('should fail to parse "bad://url"', () => {
     let err: Error;

packages/cli/test/util/dev/server.test.ts

@@ -9,6 +9,9 @@ import { createServer } from 'http';
 import { client } from '../../mocks/client';
 import DevServer from '../../../src/util/dev/server';
 
+const IS_MAC_OS = process.platform === 'darwin';
+const IS_WINDOWS = process.platform === 'win32';
+
 async function runNpmInstall(fixturePath: string) {
   if (await fs.pathExists(path.join(fixturePath, 'package.json'))) {
     return execa('yarn', ['install', '--network-timeout', '1000000'], {
@@ -19,7 +22,17 @@ async function runNpmInstall(fixturePath: string) {
 }
 
 const testFixture =
-  (name: string, fn: (server: DevServer) => Promise<void>) => async () => {
+  (
+    name: string,
+    fn: (server: DevServer) => Promise<void>,
+    options: { skip: boolean } = { skip: false }
+  ) =>
+  async () => {
+    if (options.skip) {
+      console.log('Skipping this test for this platform.');
+      return;
+    }
+
     let server: DevServer | null = null;
     const fixturePath = path.join(__dirname, '../../fixtures/unit', name);
     await runNpmInstall(fixturePath);
@@ -125,29 +138,29 @@ describe('DevServer', () => {
 
   it(
     'should maintain query when builder defines routes',
-    testFixture('now-dev-next', async server => {
-      if (process.platform === 'darwin') {
-        // this test very often fails on Mac OS only due to timeouts
-        console.log('Skipping test on macOS');
-        return;
+    testFixture(
+      'now-dev-next',
+      async server => {
+        const res = await fetch(`${server.address}/something?url-param=a`);
+        validateResponseHeaders(res);
+
+        const text = await res.text();
+
+        // Hacky way of getting the page payload from the response
+        // HTML since we don't have a HTML parser handy.
+        const json = text
+          .match(/<div>(.*)<\/div>/)![1]
+          .replace('</div>', '')
+          .replace(/&quot;/g, '"');
+        const parsed = JSON.parse(json);
+
+        expect(parsed.query['url-param']).toEqual('a');
+        expect(parsed.query['route-param']).toEqual('b');
+      },
+      {
+        skip: IS_MAC_OS,
       }
-
-      const res = await fetch(`${server.address}/something?url-param=a`);
-      validateResponseHeaders(res);
-
-      const text = await res.text();
-
-      // Hacky way of getting the page payload from the response
-      // HTML since we don't have a HTML parser handy.
-      const json = text
-        .match(/<div>(.*)<\/div>/)![1]
-        .replace('</div>', '')
-        .replace(/&quot;/g, '"');
-      const parsed = JSON.parse(json);
-
-      expect(parsed.query['url-param']).toEqual('a');
-      expect(parsed.query['route-param']).toEqual('b');
-    })
+    )
   );
 
   it(
@@ -164,10 +177,9 @@ describe('DevServer', () => {
     'should send `etag` header for static files',
     testFixture('now-dev-headers', async server => {
       const res = await fetch(`${server.address}/foo.txt`);
-      const expected =
-        process.platform === 'win32'
-          ? '9dc423ab77c2e0446cd355256efff2ea1be27cbf'
-          : 'd263af8ab880c0b97eb6c5c125b5d44f9e5addd9';
+      const expected = IS_WINDOWS
+        ? '9dc423ab77c2e0446cd355256efff2ea1be27cbf'
+        : 'd263af8ab880c0b97eb6c5c125b5d44f9e5addd9';
       expect(res.headers.get('etag')).toEqual(`"${expected}"`);
       const body = await res.text();
       expect(body.trim()).toEqual('hi');
@@ -176,36 +188,37 @@ describe('DevServer', () => {
 
   it(
     'should support default builds and routes',
-    testFixture('now-dev-default-builds-and-routes', async server => {
-      if (process.platform === 'darwin') {
-        // this test very often fails on Mac OS only due to timeouts
-        console.log('Skipping test on macOS');
-        return;
+    testFixture(
+      'now-dev-default-builds-and-routes',
+      async server => {
+        let podId: string;
+
+        let res = await fetch(`${server.address}/`);
+        validateResponseHeaders(res);
+        podId = res.headers.get('x-vercel-id')!.match(/:(\w+)-/)![1];
+        let body = await res.text();
+        expect(body.includes('hello, this is the frontend')).toBeTruthy();
+
+        res = await fetch(`${server.address}/api/users`);
+        validateResponseHeaders(res, podId);
+        body = await res.text();
+        expect(body).toEqual('users');
+
+        res = await fetch(`${server.address}/api/users/1`);
+        validateResponseHeaders(res, podId);
+        body = await res.text();
+        expect(body).toEqual('users/1');
+
+        res = await fetch(`${server.address}/api/welcome`);
+        validateResponseHeaders(res, podId);
+        body = await res.text();
+        expect(body).toEqual('hello and welcome');
+      },
+      {
+        // this test very often times out in the testFixture startup logic on Mac
+        skip: IS_MAC_OS,
       }
-
-      let podId: string;
-
-      let res = await fetch(`${server.address}/`);
-      validateResponseHeaders(res);
-      podId = res.headers.get('x-vercel-id')!.match(/:(\w+)-/)![1];
-      let body = await res.text();
-      expect(body.includes('hello, this is the frontend')).toBeTruthy();
-
-      res = await fetch(`${server.address}/api/users`);
-      validateResponseHeaders(res, podId);
-      body = await res.text();
-      expect(body).toEqual('users');
-
-      res = await fetch(`${server.address}/api/users/1`);
-      validateResponseHeaders(res, podId);
-      body = await res.text();
-      expect(body).toEqual('users/1');
-
-      res = await fetch(`${server.address}/api/welcome`);
-      validateResponseHeaders(res, podId);
-      body = await res.text();
-      expect(body).toEqual('hello and welcome');
-    })
+    )
   );
 
   it(
@@ -218,22 +231,26 @@ describe('DevServer', () => {
     })
   );
 
-  if (process.platform !== 'win32') {
-    // This test is currently failing on Windows, so skip for now:
-    //   > Creating initial build
-    //   $ serve -l $PORT src
-    //   'serve' is not recognized as an internal or external command,
-    // https://github.com/vercel/vercel/pull/6638/checks?check_run_id=3449662836
-    it(
-      'should support `@vercel/static-build` routing',
-      testFixture('now-dev-static-build-routing', async server => {
+  it(
+    'should support `@vercel/static-build` routing',
+    testFixture(
+      'now-dev-static-build-routing',
+      async server => {
         const res = await fetch(`${server.address}/api/date`);
         expect(res.status).toEqual(200);
         const body = await res.text();
         expect(body.startsWith('The current date:')).toBeTruthy();
-      })
-    );
-  }
+      },
+      {
+        // This test is currently failing on Windows, so skip for now:
+        //   > Creating initial build
+        //   $ serve -l $PORT src
+        //   'serve' is not recognized as an internal or external command,
+        // https://github.com/vercel/vercel/pull/6638/checks?check_run_id=3449662836
+        skip: IS_WINDOWS,
+      }
+    )
+  );
 
   it(
     'should support directory listing',

packages/cli/test/util/projects/link.test.ts

@@ -0,0 +1,71 @@
+import { join } from 'path';
+import { getLinkedProject } from '../../../src/util/projects/link';
+import { client } from '../../mocks/client';
+
+import { defaultProject, useProject } from '../../mocks/project';
+import { useTeams } from '../../mocks/team';
+import { useUser } from '../../mocks/user';
+
+type UnPromisify<T> = T extends Promise<infer U> ? U : T;
+
+const fixture = (name: string) => join(__dirname, '../../fixtures/unit', name);
+
+describe('getLinkedProject', () => {
+  it('should fail to return a link when token is missing', async () => {
+    const cwd = fixture('vercel-pull-next');
+
+    useUser();
+    useTeams('team_dummy', { failMissingToken: true });
+    useProject({
+      ...defaultProject,
+      id: 'vercel-pull-next',
+      name: 'vercel-pull-next',
+    });
+
+    let link: UnPromisify<ReturnType<typeof getLinkedProject>> | undefined;
+    let error: Error | undefined;
+    try {
+      link = await getLinkedProject(client, cwd);
+    } catch (err) {
+      error = err;
+    }
+
+    expect(link).toBeUndefined();
+
+    if (!error) {
+      throw new Error(`Expected an error to be thrown.`);
+    }
+    expect(error.message).toBe(
+      'The specified token is not valid. Use `vercel login` to generate a new token.'
+    );
+  });
+
+  it('should fail to return a link when no access to team', async () => {
+    const cwd = fixture('vercel-pull-next');
+
+    useUser();
+    useTeams('team_dummy', { failNoAccess: true });
+    useProject({
+      ...defaultProject,
+      id: 'vercel-pull-next',
+      name: 'vercel-pull-next',
+    });
+
+    let link: UnPromisify<ReturnType<typeof getLinkedProject>> | undefined;
+    let error: Error | undefined;
+    try {
+      link = await getLinkedProject(client, cwd);
+    } catch (err) {
+      error = err;
+    }
+
+    expect(link).toBeUndefined();
+
+    if (!error) {
+      throw new Error(`Expected an error to be thrown.`);
+    }
+    expect(error.message).toBe(
+      'Could not retrieve Project Settings. To link your Project, remove the `.vercel` directory and deploy again.'
+    );
+  });
+});

packages/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/client",
-  "version": "11.0.2",
+  "version": "11.0.3-canary.0",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "homepage": "https://vercel.com",
@@ -15,8 +15,9 @@
   },
   "scripts": {
     "build": "tsc",
-    "test-integration-once": "jest --verbose --runInBand --bail tests/create-deployment.test.ts tests/create-legacy-deployment.test.ts tests/paths.test.ts",
-    "test-unit": "jest --verbose --runInBand --bail tests/unit.*test.*"
+    "test-integration-once": "yarn test tests/create-deployment.test.ts tests/create-legacy-deployment.test.ts tests/paths.test.ts",
+    "test": "jest --env node --verbose --runInBand --bail",
+    "test-unit": "yarn test tests/unit.*test.*"
   },
   "engines": {
     "node": ">= 12"
@@ -41,7 +42,7 @@
     ]
   },
   "dependencies": {
-    "@vercel/build-utils": "3.0.1",
+    "@vercel/build-utils": "3.0.2-canary.0",
     "@zeit/fetch": "5.2.0",
     "async-retry": "1.2.3",
     "async-sema": "3.0.0",

packages/frameworks/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/frameworks",
-  "version": "0.9.0",
+  "version": "0.9.1-canary.0",
   "main": "./dist/frameworks.js",
   "types": "./dist/frameworks.d.ts",
   "files": [
@@ -9,7 +9,8 @@
   "license": "UNLICENSED",
   "scripts": {
     "build": "tsc",
-    "test-unit": "jest --env node --verbose --runInBand --bail"
+    "test": "jest --env node --verbose --runInBand --bail",
+    "test-unit": "yarn test"
   },
   "dependencies": {
     "@iarna/toml": "2.2.3",
@@ -20,7 +21,7 @@
     "@types/js-yaml": "3.12.1",
     "@types/node": "12.0.4",
     "@types/node-fetch": "2.5.8",
-    "@vercel/routing-utils": "1.13.2",
+    "@vercel/routing-utils": "1.13.3-canary.0",
     "ajv": "6.12.2",
     "typescript": "4.3.4"
   }

packages/frameworks/test/frameworks.unit.test.ts

@@ -7,6 +7,9 @@ import fetch from 'node-fetch';
 import { URL, URLSearchParams } from 'url';
 import frameworkList from '../src/frameworks';
 
+// bump timeout for Windows as network can be slower
+jest.setTimeout(15 * 1000);
+
 const SchemaFrameworkDetectionItem = {
   type: 'array',
   items: [

packages/go/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/go",
-  "version": "1.4.2",
+  "version": "1.4.3-canary.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/go",
@@ -11,7 +11,8 @@
   },
   "scripts": {
     "build": "node build",
-    "test-integration-once": "jest --env node --verbose --runInBand --bail",
+    "test": "yarn jest --env node --verbose --runInBand --bail",
+    "test-integration-once": "yarn test",
     "prepublishOnly": "node build"
   },
   "files": [
@@ -24,7 +25,7 @@
     "@types/fs-extra": "^5.0.5",
     "@types/node-fetch": "^2.3.0",
     "@types/tar": "^4.0.0",
-    "@vercel/build-utils": "3.0.1",
+    "@vercel/build-utils": "3.0.2-canary.0",
     "@vercel/ncc": "0.24.0",
     "async-retry": "1.3.1",
     "execa": "^1.0.0",

packages/go/test/test.js

@@ -21,10 +21,15 @@ beforeAll(async () => {
   console.log('builderUrl', builderUrl);
 });
 
+const skipFixtures = ['08-include-files'];
 const fixturesPath = path.resolve(__dirname, 'fixtures');
 
 // eslint-disable-next-line no-restricted-syntax
 for (const fixture of fs.readdirSync(fixturesPath)) {
+  if (skipFixtures.includes(fixture)) {
+    console.log(`Skipping test fixture ${fixture}`);
+    continue;
+  }
   // eslint-disable-next-line no-loop-func
   it(`should build ${fixture}`, async () => {
     await expect(

packages/next/.gitignore

@@ -0,0 +1,2 @@
+/dist
+test/builder-info.json

packages/next/build.js

@@ -0,0 +1,36 @@
+const execa = require('execa');
+const { remove, rename } = require('fs-extra');
+const buildEdgeFunctionTemplate = require('./scripts/build-edge-function-template');
+
+async function main() {
+  const isDevBuild = process.argv.includes('--dev');
+
+  await remove('dist');
+  await execa('tsc', [], { stdio: 'inherit' });
+  await buildEdgeFunctionTemplate();
+
+  if (!isDevBuild) {
+    await execa(
+      'ncc',
+      [
+        'build',
+        'src/index.ts',
+        '--minify',
+        '-e',
+        'esbuild',
+        '-e',
+        '@vercel/build-utils',
+        '-o',
+        'dist/main',
+      ],
+      { stdio: 'inherit' }
+    );
+    await rename('dist/main/index.js', 'dist/index.js');
+    await remove('dist/main');
+  }
+}
+
+main().catch(err => {
+  console.error(err);
+  process.exit(1);
+});

packages/next/package.json

@@ -0,0 +1,73 @@
+{
+  "name": "@vercel/next",
+  "version": "2.8.66-canary.0",
+  "license": "MIT",
+  "main": "./dist/index",
+  "homepage": "https://vercel.com/docs/runtimes#official-runtimes/next-js",
+  "scripts": {
+    "build": "node build.js",
+    "build-dev": "node build.js --dev",
+    "test": "jest --env node --verbose --bail --runInBand",
+    "test-unit": "yarn test test/build.test.ts  test/unit/",
+    "test-next-local": "jest --env node --verbose --bail --forceExit --testTimeout=360000 test/integration/*.test.js test/integration/*.test.ts",
+    "test-next-local:middleware": "jest --env node --verbose --bail --useStderr --testTimeout=360000 test/integration/middleware.test.ts",
+    "test-integration-once": "rm test/builder-info.json; jest --env node --verbose --runInBand --bail test/fixtures/**/*.test.js",
+    "prepublishOnly": "yarn build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/vercel/vercel.git",
+    "directory": "packages/next"
+  },
+  "files": [
+    "dist"
+  ],
+  "jest": {
+    "preset": "ts-jest/presets/default",
+    "testEnvironment": "node",
+    "globals": {
+      "ts-jest": {
+        "diagnostics": true,
+        "isolatedModules": true
+      }
+    }
+  },
+  "devDependencies": {
+    "@types/aws-lambda": "8.10.19",
+    "@types/buffer-crc32": "0.2.0",
+    "@types/convert-source-map": "1.5.2",
+    "@types/find-up": "4.0.0",
+    "@types/fs-extra": "8.0.0",
+    "@types/glob": "7.1.3",
+    "@types/next-server": "8.0.0",
+    "@types/node": "14.17.27",
+    "@types/resolve-from": "5.0.1",
+    "@types/semver": "6.0.0",
+    "@types/text-table": "0.2.1",
+    "@types/webpack-sources": "3.2.0",
+    "@vercel/build-utils": "3.0.2-canary.0",
+    "@vercel/nft": "0.18.1",
+    "@vercel/routing-utils": "1.13.3-canary.0",
+    "async-sema": "3.0.1",
+    "buffer-crc32": "0.2.13",
+    "cheerio": "1.0.0-rc.10",
+    "convert-source-map": "1.8.0",
+    "esbuild": "0.12.22",
+    "escape-string-regexp": "2.0.0",
+    "execa": "2.0.4",
+    "find-up": "4.1.0",
+    "fs-extra": "7.0.0",
+    "get-port": "5.0.0",
+    "nanoid": "3.3.4",
+    "ndjson": "2.0.0",
+    "pretty-bytes": "5.6.0",
+    "resolve-from": "5.0.0",
+    "semver": "6.1.1",
+    "set-cookie-parser": "2.4.6",
+    "source-map": "0.7.3",
+    "test-listen": "1.1.0",
+    "text-table": "0.2.0",
+    "typescript": "4.5.2",
+    "webpack-sources": "3.2.3"
+  }
+}

packages/next/scripts/build-edge-function-template.js

@@ -0,0 +1,46 @@
+const { build } = require('esbuild');
+const assert = require('assert');
+const { outputFile } = require('fs-extra');
+
+/**
+ * @param {Pick<import('esbuild').BuildOptions, 'outfile' | 'format' | 'entryPoints' | 'write'>} options
+ */
+async function buildTemplate(options) {
+  return build({
+    bundle: true,
+    entryPoints: options.entryPoints,
+    format: options.format,
+    legalComments: 'none',
+    minify: process.env.NODE_ENV !== 'test',
+    outfile: options.outfile,
+    // Cloudflare Workers uses the V8 JavaScript engine from Google Chrome.
+    // The Workers runtime is updated at least once a week, to at least the version
+    // that is currently used by Chrome's stable release.
+    // To see the latest stable chrome version: https://www.chromestatus.com/features/schedule
+    target: 'esnext',
+    write: options.write,
+  });
+}
+
+async function buildNextjsWrapper() {
+  const { outputFiles } = await buildTemplate({
+    entryPoints: ['./src/edge-function-source/get-edge-function'],
+    outfile: 'dist/___get-nextjs-edge-function.js',
+    format: 'cjs', // https://esbuild.github.io/api/#format
+    write: false,
+  });
+
+  assert(outputFiles);
+  const [src] = outputFiles;
+
+  return outputFile(src.path, `module.exports = ${JSON.stringify(src.text)}`);
+}
+
+module.exports = buildNextjsWrapper;
+
+if (!module.parent) {
+  buildNextjsWrapper().catch(err => {
+    console.error(err);
+    process.exit(1);
+  });
+}

packages/next/src/create-serverless-config.ts

@@ -0,0 +1,95 @@
+import fs from 'fs-extra';
+import path from 'path';
+import semver from 'semver';
+
+import { ExperimentalTraceVersion } from './utils';
+
+function getCustomData(importName: string, target: string) {
+  return `
+// @ts-nocheck
+module.exports = function(...args) {
+  let original = require('./${importName}');
+
+  const finalConfig = {};
+  const target = { target: '${target}' };
+
+  if (typeof original === 'function' && original.constructor.name === 'AsyncFunction') {
+    // AsyncFunctions will become promises
+    original = original(...args);
+  }
+
+  if (original instanceof Promise) {
+    // Special case for promises, as it's currently not supported
+    // and will just error later on
+    return original
+      .then((orignalConfig) => Object.assign(finalConfig, orignalConfig))
+      .then((config) => Object.assign(config, target));
+  } else if (typeof original === 'function') {
+    Object.assign(finalConfig, original(...args));
+  } else if (typeof original === 'object') {
+    Object.assign(finalConfig, original);
+  }
+
+  Object.assign(finalConfig, target);
+
+  return finalConfig;
+}
+  `.trim();
+}
+
+function getDefaultData(target: string) {
+  return `
+// @ts-nocheck
+module.exports = { target: '${target}' };
+  `.trim();
+}
+
+export default async function createServerlessConfig(
+  workPath: string,
+  entryPath: string,
+  nextVersion: string | undefined
+) {
+  let target = 'serverless';
+
+  if (nextVersion) {
+    try {
+      if (semver.gte(nextVersion, ExperimentalTraceVersion)) {
+        target = 'experimental-serverless-trace';
+      }
+    } catch (
+      _ignored
+      // eslint-disable-next-line
+    ) {}
+  }
+  const primaryConfigPath = path.join(entryPath, 'next.config.js');
+  const secondaryConfigPath = path.join(workPath, 'next.config.js');
+  const backupConfigName = `next.config.__vercel_builder_backup__.js`;
+
+  const hasPrimaryConfig = fs.existsSync(primaryConfigPath);
+  const hasSecondaryConfig = fs.existsSync(secondaryConfigPath);
+
+  let configPath: string;
+  let backupConfigPath: string;
+
+  if (hasPrimaryConfig) {
+    // Prefer primary path
+    configPath = primaryConfigPath;
+    backupConfigPath = path.join(entryPath, backupConfigName);
+  } else if (hasSecondaryConfig) {
+    // Work with secondary path (some monorepo setups)
+    configPath = secondaryConfigPath;
+    backupConfigPath = path.join(workPath, backupConfigName);
+  } else {
+    // Default to primary path for creation
+    configPath = primaryConfigPath;
+    backupConfigPath = path.join(entryPath, backupConfigName);
+  }
+
+  if (fs.existsSync(configPath)) {
+    await fs.rename(configPath, backupConfigPath);
+    await fs.writeFile(configPath, getCustomData(backupConfigName, target));
+  } else {
+    await fs.writeFile(configPath, getDefaultData(target));
+  }
+  return target;
+}

packages/next/src/edge-function-source/constants.ts

@@ -0,0 +1,24 @@
+const KIB = 1024;
+const MIB = 1024 * KIB;
+
+/**
+ * The limit after compression. it has to be kibibyte instead of kilobyte
+ * See https://github.com/cloudflare/wrangler/blob/8907b12add3d70ee21ac597b69cd66f6807571f4/src/wranglerjs/output.rs#L44
+ */
+const EDGE_FUNCTION_SCRIPT_SIZE_LIMIT = MIB;
+
+/**
+ * This safety buffer must cover the size of our whole runtime layer compressed
+ * plus some extra space to allow it to grow in the future. At the time of
+ * writing this comment the compressed size size is ~7KiB so 20KiB should
+ * be more than enough.
+ */
+const EDGE_FUNCTION_SCRIPT_SIZE_BUFFER = 20 * KIB;
+
+/**
+ * The max size we allow for compressed user code is the compressed script
+ * limit minus the compressed safety buffer. We must check this limit after
+ * compressing the user code.
+ */
+export const EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT =
+  EDGE_FUNCTION_SCRIPT_SIZE_LIMIT - EDGE_FUNCTION_SCRIPT_SIZE_BUFFER;

packages/next/src/edge-function-source/get-edge-function-source.ts

@@ -0,0 +1,84 @@
+import type { NextjsParams } from './get-edge-function';
+import { readFile } from 'fs-extra';
+import { ConcatSource, Source } from 'webpack-sources';
+import { fileToSource, raw, sourcemapped } from '../sourcemapped';
+import { join } from 'path';
+import { EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT } from './constants';
+import zlib from 'zlib';
+import { promisify } from 'util';
+import bytes from 'pretty-bytes';
+
+// @ts-expect-error this is a prebuilt file, based on `../../scripts/build-edge-function-template.js`
+import template from '../../dist/___get-nextjs-edge-function.js';
+
+const gzip = promisify<zlib.InputType, Buffer>(zlib.gzip);
+
+/**
+ * Allows to get the source code for a Next.js Edge Function where the output
+ * is defined by a set of filePaths that compose all chunks. Those will write
+ * to a global namespace _ENTRIES. The Next.js parameters will allow to adapt
+ * the function into the core Edge Function signature.
+ *
+ * @param filePaths Array of relative file paths for the function chunks.
+ * @param params Next.js parameters to adapt it to core edge functions.
+ * @param outputDir The output directory the files in `filePaths` stored in.
+ * @returns The source code of the edge function.
+ */
+export async function getNextjsEdgeFunctionSource(
+  filePaths: string[],
+  params: NextjsParams,
+  outputDir: string,
+  wasm?: { filePath: string; name: string }[]
+): Promise<Source> {
+  const chunks = new ConcatSource(raw(`let _ENTRIES = {};`));
+  for (const filePath of filePaths) {
+    const fullFilePath = join(outputDir, filePath);
+    const content = await readFile(fullFilePath, 'utf8');
+    chunks.add(raw(`\n/**/;`));
+    chunks.add(await fileToSource(content, filePath, fullFilePath));
+  }
+
+  const text = chunks.source();
+
+  /**
+   * We validate at this point because we want to verify against user code.
+   * It should not count the Worker wrapper nor the Next.js wrapper.
+   */
+  await validateScript(text);
+
+  // Wrap to fake module.exports
+  const getPageMatchCode = `(function () {
+    const module = { exports: {}, loaded: false };
+    const fn = (function(module,exports) {${template}\n});
+    fn(module, module.exports);
+    return module.exports;
+  })`;
+
+  return sourcemapped`
+  ${raw(getWasmImportStatements(wasm))}
+  ${chunks};
+  export default ${raw(getPageMatchCode)}.call({}).default(
+    ${raw(JSON.stringify(params))}
+  )`;
+}
+
+function getWasmImportStatements(wasm: { name: string }[] = []) {
+  return wasm
+    .filter(({ name }) => name.startsWith('wasm_'))
+    .map(({ name }) => {
+      const pathname = `/wasm/${name}.wasm`;
+      return `const ${name} = require(${JSON.stringify(pathname)});`;
+    })
+    .join('\n');
+}
+
+async function validateScript(content: string) {
+  const gzipped = await gzip(content);
+  if (gzipped.length > EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT) {
+    throw new Error(
+      `Exceeds maximum edge function script size: ${bytes(
+        gzipped.length
+      )} / ${bytes(EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT)}`
+    );
+  }
+}

packages/next/src/edge-function-source/get-edge-function.ts

@@ -0,0 +1,242 @@
+/// <reference lib="DOM" />
+
+import { toPlainHeaders } from './to-plain-headers';
+
+export interface NextjsParams {
+  /**
+   * The name of the function exposed in _ENTRIES that will be wrapped.
+   */
+  name: string;
+  /**
+   * An array with all static pages that the Next.js application contains.
+   * This is required to estimate if a pathname will match a page.
+   */
+  staticRoutes: { page: string; namedRegex?: string }[];
+  /**
+   * An array with dynamic page names and their matching regular expression.
+   * This is required to estimate if a request will match a dynamic page.
+   */
+  dynamicRoutes?: { page: string; namedRegex?: string }[];
+  /**
+   * The Next.js minimal configuration that the Middleware Edge Function
+   * requires to parse the URL. This must include the locale config and
+   * the basePath.
+   */
+  nextConfig: NextConfig | null;
+}
+
+type EdgeFunction = (
+  request: Request,
+  context: { waitUntil(promise: Promise<unknown>): void }
+) => Promise<Response>;
+
+/**
+ * A template to adapt the Next.js Edge Function signature into the core Edge
+ * Function signature. This will automatically inject parameters that are
+ * missing in default Edge Functions from the provided configuration
+ * parameters. Static and Dynamic RegExp are calculated in the module scope
+ * to avoid recomputing them for each function invocation.
+ */
+export default function getNextjsEdgeFunction(
+  params: NextjsParams
+): EdgeFunction {
+  const staticRoutes = params.staticRoutes.map(route => ({
+    regexp: new RegExp(route.namedRegex!),
+    page: route.page,
+  }));
+
+  const dynamicRoutes =
+    params.dynamicRoutes?.map(route => ({
+      regexp: new RegExp(route.namedRegex!),
+      page: route.page,
+    })) || [];
+
+  return async function edgeFunction(request, context) {
+    let pathname = new URL(request.url).pathname;
+    let pageMatch: PageMatch = {};
+
+    // Remove the basePath from the URL
+    if (params.nextConfig?.basePath) {
+      if (pathname.startsWith(params.nextConfig.basePath)) {
+        pathname = pathname.replace(params.nextConfig.basePath, '') || '/';
+      }
+    }
+
+    // Remove the locale from the URL
+    if (params.nextConfig?.i18n) {
+      for (const locale of params.nextConfig.i18n.locales) {
+        const regexp = new RegExp(`^/${locale}($|/)`, 'i');
+        if (pathname.match(regexp)) {
+          pathname = pathname.replace(regexp, '/') || '/';
+          break;
+        }
+      }
+    }
+
+    // Find the page match that will happen if there are no assets matching
+    for (const route of staticRoutes) {
+      const result = route.regexp.exec(pathname);
+      if (result) {
+        pageMatch.name = route.page;
+        break;
+      }
+    }
+
+    if (!pageMatch.name) {
+      const isApi = isApiRoute(pathname);
+      for (const route of dynamicRoutes || []) {
+        /**
+         * Dynamic API routes should not be checked against dynamic non API
+         * routes so we skip it in such case. For example, a request to
+         * /api/test should not match /pages/[slug].test having:
+         *   - pages/api/foo.js
+         *   - pages/[slug]/test.js
+         */
+        if (isApi && !isApiRoute(route.page)) {
+          continue;
+        }
+
+        const result = route.regexp.exec(pathname);
+        if (result) {
+          pageMatch = {
+            name: route.page,
+            params: result.groups,
+          };
+          break;
+        }
+      }
+    }
+
+    // Invoke the function injecting missing parameters
+    const result = await _ENTRIES[`middleware_${params.name}`].default.call(
+      {},
+      {
+        request: {
+          url: request.url,
+          method: request.method,
+          headers: toPlainHeaders(request.headers),
+          ip: header(request.headers, IncomingHeaders.Ip),
+          geo: {
+            city: header(request.headers, IncomingHeaders.City, true),
+            country: header(request.headers, IncomingHeaders.Country, true),
+            latitude: header(request.headers, IncomingHeaders.Latitude),
+            longitude: header(request.headers, IncomingHeaders.Longitude),
+            region: header(request.headers, IncomingHeaders.Region, true),
+          },
+          nextConfig: params.nextConfig,
+          page: pageMatch,
+          body: request.body,
+        },
+      }
+    );
+
+    context.waitUntil(result.waitUntil);
+
+    return result.response;
+  };
+}
+
+/**
+ * Allows to get a header value by name but falling back to `undefined` when
+ * the value does not exist. Optionally, we can make this function decode
+ * what it reads for certain cases.
+ *
+ * @param headers The Headers object.
+ * @param name The name of the header to extract.
+ * @param decode Tells if we should decode the value.
+ * @returns The header value or undefined.
+ */
+function header(headers: Headers, name: string, decode = false) {
+  const value = headers.get(name) || undefined;
+  return decode && value ? decodeURIComponent(value) : value;
+}
+
+/**
+ * Next.js current output will write in the global variable _ENTRIES all of
+ * the middleware that exist in the application. This global describes its
+ * signature which we should adapt into the core Edge Function.
+ */
+declare let _ENTRIES: {
+  [key: string]: {
+    default: (params: {
+      request: {
+        url: string;
+        method: string;
+        headers: {
+          [header: string]: string | string[] | undefined;
+        };
+        ip?: string;
+        geo?: {
+          city?: string;
+          country?: string;
+          region?: string;
+          latitude?: string;
+          longitude?: string;
+        };
+        nextConfig?: NextConfig | null;
+        page?: PageMatch;
+        body: ReadableStream<Uint8Array> | null;
+      };
+    }) => Promise<{ response: Response; waitUntil: Promise<any> }>;
+  };
+};
+
+/**
+ * A partial Next.js configuration object that contains the required info
+ * to parse the URL and figure out the pathname.
+ */
+interface NextConfig {
+  basePath?: string;
+  i18n?: {
+    defaultLocale: string;
+    domains?: {
+      defaultLocale: string;
+      domain: string;
+      http?: boolean;
+      locales?: string[];
+    }[];
+    localeDetection?: boolean;
+    locales: string[];
+  };
+}
+
+/**
+ * Information about the page and parameters that the Middleware Edge
+ * Function will match in case it doesn't intercept the request.
+ * TODO We must consider if this should be removed as it is misleading.
+ */
+interface PageMatch {
+  name?: string;
+  params?: { [key: string]: string };
+}
+
+function isApiRoute(path: string) {
+  return path === '/api' || path.startsWith('/api/');
+}
+
+enum IncomingHeaders {
+  /**
+   * City of the original client IP calculated by Vercel Proxy.
+   */
+  City = 'x-vercel-ip-city',
+  /**
+   * Country of the original client IP calculated by Vercel Proxy.
+   */
+  Country = 'x-vercel-ip-country',
+  /**
+   * Ip from Vercel Proxy. Do not confuse it with the client Ip.
+   */
+  Ip = 'x-real-ip',
+  /**
+   * Latitude of the original client IP calculated by Vercel Proxy.
+   */
+  Latitude = 'x-vercel-ip-latitude',
+  /**
+   * Longitude of the original client IP calculated by Vercel Proxy.
+   */
+  Longitude = 'x-vercel-ip-longitude',
+  /**
+   * Region of the original client IP calculated by Vercel Proxy.
+   */
+  Region = 'x-vercel-ip-country-region',
+}

packages/next/src/edge-function-source/to-plain-headers.ts

@@ -0,0 +1,94 @@
+interface PlainHeaders {
+  [header: string]: string | string[] | undefined;
+}
+
+/**
+ * Transforms a standard Headers object into a plean Headers object. This is
+ * done to support a plain format for headers which is used in the Edge
+ * Function signature.
+ *
+ * @param headers Headers from the original request.
+ * @returns The same headers formatted as Node Headers.
+ */
+export function toPlainHeaders(headers?: Headers): PlainHeaders {
+  const result: PlainHeaders = {};
+  if (!headers) return result;
+  headers.forEach((value, key) => {
+    result[key] = value;
+    if (key.toLowerCase() === 'set-cookie') {
+      result[key] = splitCookiesString(value);
+    }
+  });
+  return result;
+}
+
+/**
+ * Set-Cookie header field-values are sometimes comma joined in one string.
+ * This splits them without choking on commas that are within a single
+ * set-cookie field-value, such as in the Expires portion. This is uncommon,
+ * but explicitly allowed (https://tools.ietf.org/html/rfc2616#section-4.2)
+ */
+export function splitCookiesString(cookiesString: string) {
+  const cookiesStrings: string[] = [];
+
+  let pos = 0;
+  let start: number;
+  let ch: string;
+  let lastComma: number;
+  let nextStart: number;
+  let cookiesSeparatorFound: boolean;
+
+  function skipWhitespace() {
+    while (pos < cookiesString.length && /\s/.test(cookiesString.charAt(pos)))
+      pos += 1;
+    return pos < cookiesString.length;
+  }
+
+  function notSpecialChar() {
+    ch = cookiesString.charAt(pos);
+    return ch !== '=' && ch !== ';' && ch !== ',';
+  }
+
+  while (pos < cookiesString.length) {
+    start = pos;
+    cookiesSeparatorFound = false;
+
+    while (skipWhitespace()) {
+      ch = cookiesString.charAt(pos);
+      if (ch === ',') {
+        // ',' is a cookie separator if we have later first '=', not ';' or ','
+        lastComma = pos;
+        pos += 1;
+
+        skipWhitespace();
+        nextStart = pos;
+
+        while (pos < cookiesString.length && notSpecialChar()) {
+          pos += 1;
+        }
+
+        // currently special character
+        if (pos < cookiesString.length && cookiesString.charAt(pos) === '=') {
+          // we found cookies separator
+          cookiesSeparatorFound = true;
+          // pos is inside the next cookie, so back up and return it.
+          pos = nextStart;
+          cookiesStrings.push(cookiesString.substring(start, lastComma));
+          start = pos;
+        } else {
+          // in param ',' or param separator ';',
+          // we continue from that comma
+          pos = lastComma + 1;
+        }
+      } else {
+        pos += 1;
+      }
+    }
+
+    if (!cookiesSeparatorFound || pos >= cookiesString.length) {
+      cookiesStrings.push(cookiesString.substring(start, cookiesString.length));
+    }
+  }
+
+  return cookiesStrings;
+}

packages/next/src/legacy-launcher.ts

@@ -0,0 +1,15 @@
+import { IncomingMessage, ServerResponse } from 'http';
+import next from 'next-server';
+import url from 'url';
+
+if (!process.env.NODE_ENV) {
+  const region = process.env.VERCEL_REGION || process.env.NOW_REGION;
+  process.env.NODE_ENV = region === 'dev1' ? 'development' : 'production';
+}
+
+const app = next({});
+
+module.exports = (req: IncomingMessage, res: ServerResponse) => {
+  const parsedUrl = url.parse(req.url || '', true);
+  app.render(req, res, 'PATHNAME_PLACEHOLDER', parsedUrl.query, parsedUrl);
+};

packages/next/src/legacy-versions.ts

@@ -0,0 +1,336 @@
+export default [
+  '0.1.0',
+  '0.1.1',
+  '0.2.0',
+  '0.2.1',
+  '0.2.2',
+  '0.2.3',
+  '0.2.4',
+  '0.2.5',
+  '0.2.6',
+  '0.2.7',
+  '0.2.8',
+  '0.2.9',
+  '0.2.10',
+  '0.2.11',
+  '0.2.12',
+  '0.2.13',
+  '0.2.14',
+  '0.3.0',
+  '0.3.1',
+  '0.3.2',
+  '0.3.3',
+  '0.4.0',
+  '0.4.1',
+  '0.9.9',
+  '0.9.10',
+  '0.9.11',
+  '1.0.0',
+  '1.0.1',
+  '1.0.2',
+  '1.1.0',
+  '1.1.1',
+  '1.1.2',
+  '1.2.0',
+  '1.2.1',
+  '1.2.2',
+  '1.2.3',
+  '2.0.0-beta.0',
+  '2.0.0-beta.1',
+  '2.0.0-beta.2',
+  '2.0.0-beta.3',
+  '2.0.0-beta.4',
+  '2.0.0-beta.5',
+  '2.0.0-beta.6',
+  '2.0.0-beta.7',
+  '2.0.0-beta.8',
+  '2.0.0-beta.9',
+  '2.0.0-beta.10',
+  '2.0.0-beta.11',
+  '2.0.0-beta.12',
+  '2.0.0-beta.13',
+  '2.0.0-beta.14',
+  '2.0.0-beta.15',
+  '2.0.0-beta.16',
+  '2.0.0-beta.17',
+  '2.0.0-beta.18',
+  '2.0.0-beta.19',
+  '2.0.0-beta.20',
+  '2.0.0-beta.21',
+  '2.0.0-beta.22',
+  '2.0.0-beta.23',
+  '2.0.0-beta.24',
+  '2.0.0-beta.25',
+  '2.0.0-beta.26',
+  '2.0.0-beta.27',
+  '2.0.0-beta.28',
+  '2.0.0-beta.29',
+  '2.0.0-beta.30',
+  '2.0.0-beta.31',
+  '2.0.0-beta.32',
+  '2.0.0-beta.33',
+  '2.0.0-beta.34',
+  '2.0.0-beta.35',
+  '2.0.0-beta.36',
+  '2.0.0-beta.37',
+  '2.0.0-beta.38',
+  '2.0.0-beta.39',
+  '2.0.0-beta.40',
+  '2.0.0-beta.41',
+  '2.0.0-beta.42',
+  '2.0.0',
+  '2.0.1',
+  '2.1.0',
+  '2.1.1',
+  '2.2.0',
+  '2.3.0-alpha1',
+  '2.3.0',
+  '2.3.1',
+  '2.4.0',
+  '2.4.1',
+  '2.4.2',
+  '2.4.3',
+  '2.4.4',
+  '2.4.5',
+  '2.4.6',
+  '2.4.7',
+  '2.4.8',
+  '2.4.9',
+  '3.0.0-beta1',
+  '3.0.0-beta10',
+  '3.0.0-beta11',
+  '3.0.0-beta12',
+  '3.0.0-beta13',
+  '3.0.0-beta14',
+  '3.0.0-beta15',
+  '3.0.0-beta16',
+  '3.0.0-beta2',
+  '3.0.0-beta3',
+  '3.0.0-beta4',
+  '3.0.0-beta5',
+  '3.0.0-beta6',
+  '3.0.0-beta7',
+  '3.0.0-beta8',
+  '3.0.0-beta9',
+  '3.0.1-beta.1',
+  '3.0.1-beta.2',
+  '3.0.1-beta.3',
+  '3.0.1-beta.4',
+  '3.0.1-beta.5',
+  '3.0.1-beta.6',
+  '3.0.1-beta.7',
+  '3.0.1-beta.8',
+  '3.0.1-beta.9',
+  '3.0.1-beta.10',
+  '3.0.1-beta.11',
+  '3.0.1-beta.12',
+  '3.0.1-beta.13',
+  '3.0.1-beta.14',
+  '3.0.1-beta.15',
+  '3.0.1-beta.16',
+  '3.0.1-beta.17',
+  '3.0.1-beta.18',
+  '3.0.1-beta.19',
+  '3.0.1-beta.20',
+  '3.0.1-beta.21',
+  '3.0.1',
+  '3.0.2',
+  '3.0.3',
+  '3.0.4',
+  '3.0.5',
+  '3.0.6',
+  '3.1.0',
+  '3.2.0',
+  '3.2.1',
+  '3.2.2',
+  '3.2.3',
+  '4.0.0-beta.1',
+  '4.0.0-beta.2',
+  '4.0.0-beta.3',
+  '4.0.0-beta.4',
+  '4.0.0-beta.5',
+  '4.0.0-beta.6',
+  '4.0.0',
+  '4.0.1',
+  '4.0.2',
+  '4.0.3',
+  '4.0.4',
+  '4.0.5',
+  '4.1.0',
+  '4.1.1',
+  '4.1.2',
+  '4.1.3',
+  '4.1.4-canary.1',
+  '4.1.4-canary.2',
+  '4.1.4',
+  '4.2.0-canary.1',
+  '4.2.0-zones.2',
+  '4.2.0',
+  '4.2.1',
+  '4.2.2',
+  '4.2.3',
+  '4.3.0-canary.1',
+  '4.3.0-universal-alpha.1',
+  '4.3.0-universal-alpha.2',
+  '4.3.0-universal-alpha.3',
+  '4.3.0-universal-alpha.4',
+  '4.3.0-zones.1',
+  '4.4.0-canary.2',
+  '4.4.0-canary.3',
+  '5.0.0-universal-alpha.1',
+  '5.0.0-universal-alpha.2',
+  '5.0.0-universal-alpha.3',
+  '5.0.0-universal-alpha.4',
+  '5.0.0-universal-alpha.5',
+  '5.0.0-universal-alpha.6',
+  '5.0.0-universal-alpha.7',
+  '5.0.0-universal-alpha.8',
+  '5.0.0-universal-alpha.9',
+  '5.0.0-universal-alpha.10',
+  '5.0.0-universal-alpha.11',
+  '5.0.0-universal-alpha.12',
+  '5.0.0-universal-alpha.13',
+  '5.0.0-universal-alpha.14',
+  '5.0.0-universal-alpha.15',
+  '5.0.0-universal-alpha.16',
+  '5.0.0-universal-alpha.17',
+  '5.0.0-universal-alpha.18',
+  '5.0.0-universal-alpha.19',
+  '5.0.0-universal-alpha.20',
+  '5.0.0-universal-alpha.21',
+  '5.0.0-universal-alpha.22',
+  '5.0.0-universal-alpha.23',
+  '5.0.0-zones.1',
+  '5.0.0',
+  '5.0.1-canary.1',
+  '5.0.1-canary.2',
+  '5.0.1-canary.3',
+  '5.0.1-canary.4',
+  '5.0.1-canary.5',
+  '5.0.1-canary.6',
+  '5.0.1-canary.7',
+  '5.0.1-canary.8',
+  '5.0.1-canary.9',
+  '5.0.1-canary.10',
+  '5.0.1-canary.11',
+  '5.0.1-canary.12',
+  '5.0.1-canary.13',
+  '5.0.1-canary.14',
+  '5.0.1-canary.15',
+  '5.0.1-canary.16',
+  '5.0.1-canary.17',
+  '5.1.0',
+  '6.0.0-canary.1',
+  '6.0.0-canary.2',
+  '6.0.0-canary.3',
+  '6.0.0-canary.4',
+  '6.0.0-canary.5',
+  '6.0.0-canary.6',
+  '6.0.0-canary.7',
+  '6.0.0',
+  '6.0.1-canary.0',
+  '6.0.1-canary.1',
+  '6.0.1-canary.2',
+  '6.0.1',
+  '6.0.2-canary.0',
+  '6.0.2',
+  '6.0.3-canary.0',
+  '6.0.3-canary.1',
+  '6.0.3',
+  '6.0.4-canary.0',
+  '6.0.4-canary.1',
+  '6.0.4-canary.2',
+  '6.0.4-canary.3',
+  '6.0.4-canary.4',
+  '6.0.4-canary.5',
+  '6.0.4-canary.6',
+  '6.0.4-canary.7',
+  '6.0.4-canary.8',
+  '6.0.4-canary.9',
+  '6.1.0-canary.0',
+  '6.1.0',
+  '6.1.1-canary.0',
+  '6.1.1-canary.1',
+  '6.1.1-canary.2',
+  '6.1.1-canary.3',
+  '6.1.1-canary.4',
+  '6.1.1-canary.5',
+  '6.1.1',
+  '6.1.2',
+  '7.0.0-canary.0',
+  '7.0.0-canary.1',
+  '7.0.0-canary.2',
+  '7.0.0-canary.3',
+  '7.0.0-canary.4',
+  '7.0.0-canary.5',
+  '7.0.0-canary.6',
+  '7.0.0-canary.7',
+  '7.0.0-canary.8',
+  '7.0.0-canary.9',
+  '7.0.0-canary.10',
+  '7.0.0-canary.11',
+  '7.0.0-canary.12',
+  '7.0.0-canary.13',
+  '7.0.0-canary.14',
+  '7.0.0-canary.15',
+  '7.0.0-canary.16',
+  '7.0.0-canary.18',
+  '7.0.0-canary.19',
+  '7.0.0-canary.20',
+  '7.0.0',
+  '7.0.1-canary.0',
+  '7.0.1-canary.1',
+  '7.0.1-canary.2',
+  '7.0.1-canary.3',
+  '7.0.1-canary.4',
+  '7.0.1-canary.5',
+  '7.0.1-canary.6',
+  '7.0.1',
+  '7.0.2-alpha.1',
+  '7.0.2-alpha.3',
+  '7.0.2-canary.5',
+  '7.0.2-canary.6',
+  '7.0.2-canary.7',
+  '7.0.2-canary.8',
+  '7.0.2-canary.9',
+  '7.0.2-canary.10',
+  '7.0.2-canary.11',
+  '7.0.2-canary.12',
+  '7.0.2-canary.13',
+  '7.0.2-canary.14',
+  '7.0.2-canary.15',
+  '7.0.2-canary.16',
+  '7.0.2-canary.17',
+  '7.0.2-canary.18',
+  '7.0.2-canary.19',
+  '7.0.2-canary.20',
+  '7.0.2-canary.21',
+  '7.0.2-canary.22',
+  '7.0.2-canary.23',
+  '7.0.2-canary.24',
+  '7.0.2-canary.25',
+  '7.0.2-canary.26',
+  '7.0.2-canary.27',
+  '7.0.2-canary.28',
+  '7.0.2-canary.29',
+  '7.0.2-canary.31',
+  '7.0.2-canary.33',
+  '7.0.2-canary.34',
+  '7.0.2-canary.35',
+  '7.0.2-canary.36',
+  '7.0.2-canary.37',
+  '7.0.2-canary.38',
+  '7.0.2-canary.39',
+  '7.0.2-canary.40',
+  '7.0.2-canary.41',
+  '7.0.2-canary.42',
+  '7.0.2-canary.43',
+  '7.0.2-canary.44',
+  '7.0.2-canary.45',
+  '7.0.2-canary.46',
+  '7.0.2-canary.47',
+  '7.0.2-canary.48',
+  '7.0.2-canary.49',
+  '7.0.2-canary.50',
+  '7.0.2',
+];

packages/next/src/server-launcher.ts

@@ -0,0 +1,43 @@
+import { IncomingMessage, ServerResponse } from 'http';
+// The Next.js builder can emit the project in a subdirectory depending on how
+// many folder levels of `node_modules` are traced. To ensure `process.cwd()`
+// returns the proper path, we change the directory to the folder with the
+// launcher. This mimics `yarn workspace run` behavior.
+process.chdir(__dirname);
+
+const region = process.env.VERCEL_REGION || process.env.NOW_REGION;
+
+if (!process.env.NODE_ENV) {
+  process.env.NODE_ENV = region === 'dev1' ? 'development' : 'production';
+}
+
+if (process.env.NODE_ENV !== 'production' && region !== 'dev1') {
+  console.warn(
+    `Warning: NODE_ENV was incorrectly set to "${process.env.NODE_ENV}", this value is being overridden to "production"`
+  );
+  process.env.NODE_ENV = 'production';
+}
+
+// eslint-disable-next-line
+const NextServer = require('__NEXT_SERVER_PATH__').default;
+const nextServer = new NextServer({
+  // @ts-ignore __NEXT_CONFIG__ value is injected
+  conf: __NEXT_CONFIG__,
+  dir: '.',
+  minimalMode: true,
+  customServer: false,
+});
+const requestHandler = nextServer.getRequestHandler();
+
+module.exports = async (req: IncomingMessage, res: ServerResponse) => {
+  try {
+    // entryDirectory handler
+    await requestHandler(req, res);
+  } catch (err) {
+    console.error(err);
+    // crash the lambda immediately to clean up any bad module state,
+    // this was previously handled in ___vc_bridge on an unhandled rejection
+    // but we can do this quicker by triggering here
+    process.exit(1);
+  }
+};

packages/next/src/sourcemapped.ts

@@ -0,0 +1,101 @@
+import type { RawSourceMap } from 'source-map';
+import convertSourceMap from 'convert-source-map';
+import fs from 'fs-extra';
+import {
+  ConcatSource,
+  OriginalSource,
+  SourceMapSource,
+  Source,
+} from 'webpack-sources';
+
+/**
+ * A template literal tag that preserves existing source maps, if any. This
+ * allows to compose multiple sources and preserve the source maps, so we can
+ * resolve the correct line numbers in the stack traces later on.
+ *
+ * @param strings The string literals.
+ * @param sources All the sources that may optionally have source maps. Use
+ * `raw` to pass a string that should be inserted raw (with no source map
+ * attached).
+ */
+export function sourcemapped(
+  strings: TemplateStringsArray,
+  ...sources: Source[]
+): Source {
+  const concat = new ConcatSource();
+
+  for (let i = 0; i < Math.max(strings.length, sources.length); i++) {
+    const string = strings[i];
+    const source = sources[i];
+    if (string) concat.add(raw(string));
+    if (source) concat.add(source);
+  }
+
+  return concat;
+}
+
+/**
+ * A helper to create a Source from a string with no source map.
+ * This allows to obfuscate the source code from the user and print `[native code]`
+ * when resolving the stack trace.
+ */
+export function raw(value: string) {
+  return new OriginalSource(value, '[native code]');
+}
+
+/**
+ * Takes a file with contents and tries to extract its source maps it will
+ * first try to use a `${fullFilePath}.map` file if it exists. Then, it will
+ * try to use the inline source map comment.
+ *
+ * @param content The file contents.
+ * @param sourceName the name of the source.
+ * @param fullFilePath The full path to the file.
+ */
+export async function fileToSource(
+  content: string,
+  sourceName: string,
+  fullFilePath?: string
+): Promise<Source> {
+  const sourcemap = await getSourceMap(content, fullFilePath);
+  const cleanContent = convertSourceMap.removeComments(content);
+  return sourcemap
+    ? new SourceMapSource(cleanContent, sourceName, sourcemap)
+    : new OriginalSource(cleanContent, sourceName);
+}
+
+/**
+ * Finds a source map for a given content and file path. First it will try to
+ * use a `${fullFilePath}.map` file if it exists. Then, it will try to use
+ * the inline source map comment.
+ */
+async function getSourceMap(
+  content: string,
+  fullFilePath?: string
+): Promise<RawSourceMap | null> {
+  try {
+    if (fullFilePath && (await fs.pathExists(`${fullFilePath}.map`))) {
+      const mapJson = await fs.readFile(`${fullFilePath}.map`, 'utf8');
+      return convertSourceMap.fromJSON(mapJson).toObject();
+    }
+    return convertSourceMap.fromComment(content).toObject();
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Stringifies a source map, removing unnecessary data:
+ * * `sourcesContent` is not needed to trace back frames.
+ */
+export function stringifySourceMap(
+  sourceMap?: RawSourceMap | string | null
+): string | undefined {
+  if (!sourceMap) return;
+  const obj =
+    typeof sourceMap === 'object'
+      ? { ...sourceMap }
+      : convertSourceMap.fromJSON(sourceMap).toObject();
+  delete obj.sourcesContent;
+  return JSON.stringify(obj);
+}

packages/next/src/templated-launcher-shared.ts

@@ -0,0 +1,28 @@
+// The Next.js builder can emit the project in a subdirectory depending on how
+// many folder levels of `node_modules` are traced. To ensure `process.cwd()`
+// returns the proper path, we change the directory to the folder with the
+// launcher. This mimics `yarn workspace run` behavior.
+process.chdir(__dirname);
+
+const region = process.env.VERCEL_REGION || process.env.NOW_REGION;
+
+if (!process.env.NODE_ENV) {
+  process.env.NODE_ENV = region === 'dev1' ? 'development' : 'production';
+}
+
+if (process.env.NODE_ENV !== 'production' && region !== 'dev1') {
+  console.warn(
+    `Warning: NODE_ENV was incorrectly set to "${process.env.NODE_ENV}", this value is being overridden to "production"`
+  );
+  process.env.NODE_ENV = 'production';
+}
+
+// @ts-ignore
+// eslint-disable-next-line
+let page: any = {};
+// __LAUNCHER_PAGE_HANDLER__
+
+// page.render is for React rendering
+// page.default is for /api rendering
+// page is for module.exports in /api
+module.exports = page.render || page.default || page;

packages/next/src/templated-launcher.ts

@@ -0,0 +1,19 @@
+// The Next.js builder can emit the project in a subdirectory depending on how
+// many folder levels of `node_modules` are traced. To ensure `process.cwd()`
+// returns the proper path, we change the directory to the folder with the
+// launcher. This mimics `yarn workspace run` behavior.
+process.chdir(__dirname);
+
+if (!process.env.NODE_ENV) {
+  const region = process.env.VERCEL_REGION || process.env.NOW_REGION;
+  process.env.NODE_ENV = region === 'dev1' ? 'development' : 'production';
+}
+
+// @ts-ignore
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const page = require(__LAUNCHER_PAGE_PATH__);
+
+// page.render is for React rendering
+// page.default is for /api rendering
+// page is for module.exports in /api
+module.exports = page.render || page.default || page;

packages/next/test/fixtures/00-base-path-index-revalidate/index.test.js

@@ -0,0 +1,185 @@
+/* eslint-env jest */
+const path = require('path');
+const cheerio = require('cheerio');
+const { check, deployAndTest } = require('../../utils');
+const fetch = require('../../../../../test/lib/deployment/fetch-retry');
+
+async function checkForChange(url, initialValue, hardError) {
+  if (isNaN(initialValue)) {
+    throw new Error(
+      `expected number for initialValue, received ${initialValue}`
+    );
+  }
+
+  return check(
+    async () => {
+      const res = await fetch(url);
+
+      if (res.status !== 200) {
+        throw new Error(`Invalid status code ${res.status}`);
+      }
+      const $ = cheerio.load(await res.text());
+      const props = JSON.parse($('#props').text());
+
+      if (isNaN(props.random)) {
+        throw new Error(`Invalid random value ${props.random}`);
+      }
+      const newValue = props.random;
+      return initialValue !== newValue ? 'success' : 'fail';
+    },
+    'success',
+    hardError
+  );
+}
+
+const ctx = {};
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    const info = await deployAndTest(__dirname);
+    Object.assign(ctx, info);
+  });
+
+  it('should revalidate content properly from /docs', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/docs/_next/data/testing-build-id/index.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.index).toBe(true);
+
+    const res = await fetch(`${ctx.deploymentUrl}/docs`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.index).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('pathname /');
+    expect($('#asPath').text()).toBe('asPath /');
+
+    await checkForChange(`${ctx.deploymentUrl}/docs`, initialRandom);
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/docs`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.index).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('pathname /');
+    expect($('#asPath').text()).toBe('asPath /');
+  });
+
+  it('should load content properly from /docs/hello', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/docs/_next/data/testing-build-id/hello.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.id).toBe(true);
+    expect(data.pageProps.params).toEqual({ id: 'hello' });
+
+    const res = await fetch(`${ctx.deploymentUrl}/docs/hello`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.id).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ id: 'hello' });
+    expect($('#pathname').text()).toBe('pathname /[id]');
+    expect($('#asPath').text()).toBe('asPath /hello');
+
+    await checkForChange(`${ctx.deploymentUrl}/docs/hello`, initialRandom);
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/docs/hello`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.id).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ id: 'hello' });
+    expect($('#pathname').text()).toBe('pathname /[id]');
+    expect($('#asPath').text()).toBe('asPath /hello');
+  });
+
+  it('should revalidate content properly from /docs/blog', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/docs/_next/data/testing-build-id/blog.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.blogIndex).toBe(true);
+
+    const res = await fetch(`${ctx.deploymentUrl}/docs/blog`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.blogIndex).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('pathname /blog');
+    expect($('#asPath').text()).toBe('asPath /blog');
+
+    await checkForChange(`${ctx.deploymentUrl}/docs/blog`, initialRandom);
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/docs/blog`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.blogIndex).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('pathname /blog');
+    expect($('#asPath').text()).toBe('asPath /blog');
+  });
+
+  it('should revalidate content properly from /docs/blog/another', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/docs/_next/data/testing-build-id/blog/another.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.blogSlug).toBe(true);
+    expect(data.pageProps.params).toEqual({
+      slug: 'another',
+    });
+
+    const res = await fetch(`${ctx.deploymentUrl}/docs/blog/another`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'another' });
+    expect($('#pathname').text()).toBe('pathname /blog/[slug]');
+    expect($('#asPath').text()).toBe('asPath /blog/another');
+
+    await checkForChange(
+      `${ctx.deploymentUrl}/docs/blog/another`,
+      initialRandom
+    );
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/docs/blog/another`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'another' });
+    expect($('#pathname').text()).toBe('pathname /blog/[slug]');
+    expect($('#asPath').text()).toBe('asPath /blog/another');
+  });
+});

packages/next/test/fixtures/00-base-path-index-revalidate/next.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  basePath: '/docs',
+
+  generateBuildId() {
+    return 'testing-build-id';
+  },
+};

packages/next/test/fixtures/00-base-path-index-revalidate/package.json

@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "next": "canary",
+    "react": "latest",
+    "react-dom": "latest"
+  }
+}

packages/next/test/fixtures/00-base-path-index-revalidate/pages/[id].js

@@ -0,0 +1,24 @@
+import { useRouter } from 'next/router';
+
+export default function Home(props) {
+  const router = useRouter();
+  return (
+    <>
+      <p id="info">id page</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{`pathname ${router.pathname}`}</p>
+      <p id="asPath">{`asPath ${router.asPath}`}</p>
+    </>
+  );
+}
+
+export async function getServerSideProps({ params }) {
+  return {
+    props: {
+      random: Math.random() + Date.now(),
+      id: true,
+      params,
+    },
+  };
+}

packages/next/test/fixtures/00-base-path-index-revalidate/pages/blog/[slug].js

@@ -0,0 +1,32 @@
+import { useRouter } from 'next/router';
+
+export default function Home(props) {
+  const router = useRouter();
+  return (
+    <>
+      <p id="info">blog slug page</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{`pathname ${router.pathname}`}</p>
+      <p id="asPath">{`asPath ${router.asPath}`}</p>
+    </>
+  );
+}
+
+export async function getStaticProps({ params }) {
+  return {
+    revalidate: 1,
+    props: {
+      random: Math.random() + Date.now(),
+      blogSlug: true,
+      params,
+    },
+  };
+}
+
+export async function getStaticPaths() {
+  return {
+    paths: ['/blog/first'],
+    fallback: 'blocking',
+  };
+}

packages/next/test/fixtures/00-base-path-index-revalidate/pages/blog/index.js

@@ -0,0 +1,24 @@
+import { useRouter } from 'next/router';
+
+export default function Home(props) {
+  const router = useRouter();
+  return (
+    <>
+      <p id="info">blog index page</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{`pathname ${router.pathname}`}</p>
+      <p id="asPath">{`asPath ${router.asPath}`}</p>
+    </>
+  );
+}
+
+export async function getStaticProps() {
+  return {
+    revalidate: 1,
+    props: {
+      random: Math.random() + Date.now(),
+      blogIndex: true,
+    },
+  };
+}

packages/next/test/fixtures/00-base-path-index-revalidate/pages/index.js

@@ -0,0 +1,24 @@
+import { useRouter } from 'next/router';
+
+export default function Home(props) {
+  const router = useRouter();
+  return (
+    <>
+      <p id="info">index page</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{`pathname ${router.pathname}`}</p>
+      <p id="asPath">{`asPath ${router.asPath}`}</p>
+    </>
+  );
+}
+
+export async function getStaticProps() {
+  return {
+    revalidate: 1,
+    props: {
+      random: Math.random() + Date.now(),
+      index: true,
+    },
+  };
+}

packages/next/test/fixtures/00-base-path-index-revalidate/vercel.json

@@ -0,0 +1,9 @@
+{
+  "builds": [
+    {
+      "src": "package.json",
+      "use": "@vercel/next"
+    }
+  ],
+  "probes": []
+}

packages/next/test/fixtures/00-build-time-traces/content/hello.txt

@@ -0,0 +1 @@
+hello great big wide world!

packages/next/test/fixtures/00-build-time-traces/index.test.js

@@ -0,0 +1,74 @@
+const path = require('path');
+const cheerio = require('cheerio').default;
+const { deployAndTest, check } = require('../../utils');
+const fetch = require('../../../../../test/lib/deployment/fetch-retry');
+const ctx = {};
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    const info = await deployAndTest(__dirname);
+    Object.assign(ctx, info);
+  });
+
+  it('should revalidate content correctly', async () => {
+    const res = await fetch(`${ctx.deploymentUrl}/another`);
+    expect(res.status).toBe(200);
+
+    const html = await res.text();
+    const $ = cheerio.load(html);
+    const props = JSON.parse($('#props').text());
+    const previousNow = props.now;
+
+    expect(isNaN(props.now)).toBe(false);
+    expect(props.content[0].trim()).toBe('hello great big wide world!');
+    expect($('#page').text()).toBe('/another');
+
+    await check(async () => {
+      const res = await fetch(`${ctx.deploymentUrl}/another`);
+      expect(res.status).toBe(200);
+
+      const html = await res.text();
+      const $ = cheerio.load(html);
+      const props = JSON.parse($('#props').text());
+
+      if (isNaN(props.now)) {
+        throw new Error('invalid props: ' + html);
+      }
+      return props.now !== previousNow &&
+        props.content[0].trim() === 'hello great big wide world!'
+        ? 'success'
+        : html;
+    }, 'success');
+  });
+
+  it('should revalidate content correctly', async () => {
+    const res = await fetch(`${ctx.deploymentUrl}/post`);
+    expect(res.status).toBe(200);
+
+    const html = await res.text();
+    const $ = cheerio.load(html);
+    const props = JSON.parse($('#props').text());
+    const previousNow = props.now;
+    expect(props.content[0].trim()).toBe('hello great big wide world!');
+    expect(isNaN(props.now)).toBe(false);
+    expect($('#page').text()).toBe('/post');
+
+    await check(async () => {
+      const res = await fetch(`${ctx.deploymentUrl}/post`);
+      expect(res.status).toBe(200);
+
+      const html = await res.text();
+      const $ = cheerio.load(html);
+      const props = JSON.parse($('#props').text());
+      expect($('#page').text()).toBe('/post');
+
+      if (isNaN(props.now)) {
+        throw new Error('invalid props: ' + html);
+      }
+      return props.now !== previousNow &&
+        props.content[0].trim() === 'hello great big wide world!'
+        ? 'success'
+        : html;
+    }, 'success');
+  });
+});

packages/next/test/fixtures/00-build-time-traces/lib/get-content.js

@@ -0,0 +1,9 @@
+import fs from 'fs';
+import path from 'path';
+
+export async function getContent() {
+  const files = fs.readdirSync(path.join(process.cwd(), 'content'));
+  return files.map(file =>
+    fs.readFileSync(path.join(process.cwd(), 'content', file), 'utf8')
+  );
+}

packages/next/test/fixtures/00-build-time-traces/next.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  reactStrictMode: true,
+  experimental: {
+    nftTracing: true,
+  },
+};

packages/next/test/fixtures/00-build-time-traces/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "test-trace",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
+  },
+  "dependencies": {
+    "next": "canary",
+    "react": "17.0.2",
+    "react-dom": "17.0.2"
+  }
+}

packages/next/test/fixtures/00-build-time-traces/pages/_app.js

@@ -0,0 +1,5 @@
+function MyApp({ Component, pageProps }) {
+  return <Component {...pageProps} />;
+}
+
+export default MyApp;

packages/next/test/fixtures/00-build-time-traces/pages/another.js

@@ -0,0 +1,20 @@
+import { getContent } from '../lib/get-content';
+
+export async function getStaticProps() {
+  return {
+    props: {
+      now: Date.now(),
+      content: await getContent(),
+    },
+    revalidate: 1,
+  };
+}
+
+export default function Page(props) {
+  return (
+    <>
+      <p id="page">/another</p>
+      <p id="props">{JSON.stringify(props)}</p>
+    </>
+  );
+}

packages/next/test/fixtures/00-build-time-traces/pages/api/hello.js

@@ -0,0 +1,5 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default function handler(req, res) {
+  res.status(200).json({ name: 'John Doe' });
+}

packages/next/test/fixtures/00-build-time-traces/pages/index.js

@@ -0,0 +1,3 @@
+export default function Home() {
+  return 'index page';
+}

packages/next/test/fixtures/00-build-time-traces/pages/post.js

@@ -0,0 +1,20 @@
+import { getContent } from '../lib/get-content';
+
+export async function getStaticProps() {
+  return {
+    props: {
+      now: Date.now(),
+      content: await getContent(),
+    },
+    revalidate: 1,
+  };
+}
+
+export default function Page(props) {
+  return (
+    <>
+      <p id="page">/post</p>
+      <p id="props">{JSON.stringify(props)}</p>
+    </>
+  );
+}

packages/next/test/fixtures/00-build-time-traces/public/vercel.svg

@@ -0,0 +1,4 @@
+<svg width="283" height="64" viewBox="0 0 283 64" fill="none" 
+    xmlns="http://www.w3.org/2000/svg">
+    <path d="M141.04 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.46 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM248.72 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.45 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM200.24 34c0 6 3.92 10 10 10 4.12 0 7.21-1.87 8.8-4.92l7.68 4.43c-3.18 5.3-9.14 8.49-16.48 8.49-11.05 0-19-7.2-19-18s7.96-18 19-18c7.34 0 13.29 3.19 16.48 8.49l-7.68 4.43c-1.59-3.05-4.68-4.92-8.8-4.92-6.07 0-10 4-10 10zm82.48-29v46h-9V5h9zM36.95 0L73.9 64H0L36.95 0zm92.38 5l-27.71 48L73.91 5H84.3l17.32 30 17.32-30h10.39zm58.91 12v9.69c-1-.29-2.06-.49-3.2-.49-5.81 0-10 4-10 10V51h-9V17h9v9.2c0-5.08 5.91-9.2 13.2-9.2z" fill="#000"/>
+</svg>

packages/next/test/fixtures/00-build-time-traces/vercel.json

@@ -0,0 +1,15 @@
+{
+  "builds": [
+    {
+      "src": "package.json",
+      "use": "@vercel/next"
+    }
+  ],
+  "probes": [
+    {
+      "path": "/",
+      "status": 200,
+      "mustContain": "index page"
+    }
+  ]
+}

packages/next/test/fixtures/00-fallback-false-preview/.gitignore

@@ -0,0 +1,34 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# vercel
+.vercel

packages/next/test/fixtures/00-fallback-false-preview/index.test.js

@@ -0,0 +1,194 @@
+/* eslint-env jest */
+const path = require('path');
+const cheerio = require('cheerio');
+const setCookieParser = require('set-cookie-parser');
+const { check, deployAndTest } = require('../../utils');
+const fetch = require('../../../../../test/lib/deployment/fetch-retry');
+
+async function checkForChange(url, initialValue, fetchOpts) {
+  if (isNaN(initialValue)) {
+    throw new Error(
+      `expected number for initialValue, received ${initialValue}`
+    );
+  }
+
+  return check(async () => {
+    const res = await fetch(url, fetchOpts);
+    const $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+
+    if (isNaN(props.random)) {
+      throw new Error(`Invalid random value ${props.random}`);
+    }
+    const newValue = props.random;
+    return initialValue !== newValue ? 'success' : 'fail';
+  }, 'success');
+}
+
+const ctx = {};
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    const info = await deployAndTest(__dirname);
+    Object.assign(ctx, info);
+  });
+
+  it('should revalidate content properly from /blog', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/_next/data/testing-build-id/blog.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.blogIndex).toBe(true);
+
+    const res = await fetch(`${ctx.deploymentUrl}/blog`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.blogIndex).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('/blog');
+    expect($('#asPath').text()).toBe('/blog');
+
+    await checkForChange(`${ctx.deploymentUrl}/blog`, initialRandom);
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/blog`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.blogIndex).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({});
+    expect($('#pathname').text()).toBe('/blog');
+    expect($('#asPath').text()).toBe('/blog');
+  });
+
+  it('should load content properly from /blog/first', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/_next/data/testing-build-id/blog/first.json`
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.blogSlug).toBe(true);
+    expect(data.pageProps.params).toEqual({ slug: 'first' });
+
+    const res = await fetch(`${ctx.deploymentUrl}/blog/first`);
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'first' });
+    expect($('#pathname').text()).toBe('/blog/[slug]');
+    expect($('#asPath').text()).toBe('/blog/first');
+
+    await checkForChange(`${ctx.deploymentUrl}/blog/first`, initialRandom);
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/blog/first`);
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'first' });
+    expect($('#pathname').text()).toBe('/blog/[slug]');
+    expect($('#asPath').text()).toBe('/blog/first');
+  });
+
+  it('should rewrite/404 for fallback: false page without preview mode', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/_next/data/testing-build-id/blog/another.json`
+    );
+    expect(dataRes.status).toBe(404);
+    expect(await dataRes.text()).toContain('This page could not be found');
+
+    const res = await fetch(`${ctx.deploymentUrl}/blog/another`);
+    expect(res.status).toBe(200);
+    expect(await res.text()).toContain('blog fallback rewrite');
+  });
+
+  let previewCookie;
+
+  it('should enable preview mode successfully', async () => {
+    const res = await fetch(`${ctx.deploymentUrl}/api/enable`);
+    expect(res.status).toBe(200);
+
+    const cookies = setCookieParser.parse(
+      setCookieParser.splitCookiesString(res.headers.get('set-cookie'))
+    );
+    const bypassCookie = cookies.find(
+      cookie => cookie.name === '__prerender_bypass'
+    );
+    const previewDataCookie = cookies.find(
+      cookie => cookie.name === '__next_preview_data'
+    );
+
+    expect(bypassCookie).toBeDefined();
+    expect(previewDataCookie).toBeDefined();
+    expect(bypassCookie.value.length > 0).toBe(true);
+    expect(previewDataCookie.value.length > 0).toBe(true);
+
+    previewCookie = cookies.reduce((prev, cur) => {
+      return `${prev}${prev ? ';' : ''}${cur.name}=${cur.value}`;
+    }, '');
+  });
+
+  it('should load fallback: false page with preview mode', async () => {
+    const dataRes = await fetch(
+      `${ctx.deploymentUrl}/_next/data/testing-build-id/blog/another.json`,
+      {
+        headers: {
+          Cookie: previewCookie,
+        },
+      }
+    );
+    expect(dataRes.status).toBe(200);
+
+    const data = await dataRes.json();
+    expect(data.pageProps.blogSlug).toBe(true);
+    expect(data.pageProps.params).toEqual({ slug: 'another' });
+
+    const res = await fetch(`${ctx.deploymentUrl}/blog/another`, {
+      headers: {
+        Cookie: previewCookie,
+      },
+    });
+    expect(res.status).toBe(200);
+
+    let $ = cheerio.load(await res.text());
+    const props = JSON.parse($('#props').text());
+    const initialRandom = props.random;
+
+    expect(props.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'another' });
+    expect($('#pathname').text()).toBe('/blog/[slug]');
+    expect($('#asPath').text()).toBe('/blog/another');
+
+    await checkForChange(`${ctx.deploymentUrl}/blog/another`, initialRandom, {
+      headers: {
+        Cookie: previewCookie,
+      },
+    });
+
+    const res2 = await fetch(`${ctx.deploymentUrl}/blog/another`, {
+      headers: {
+        Cookie: previewCookie,
+      },
+    });
+    expect(res2.status).toBe(200);
+    $ = cheerio.load(await res2.text());
+    const props2 = JSON.parse($('#props').text());
+
+    expect(props2.blogSlug).toBe(true);
+    expect(JSON.parse($('#query').text())).toEqual({ slug: 'another' });
+    expect($('#pathname').text()).toBe('/blog/[slug]');
+    expect($('#asPath').text()).toBe('/blog/another');
+  });
+});

packages/next/test/fixtures/00-fallback-false-preview/next.config.js

@@ -0,0 +1,15 @@
+module.exports = {
+  generateBuildId() {
+    return 'testing-build-id';
+  },
+  rewrites() {
+    return {
+      fallback: [
+        {
+          source: '/blog/:path',
+          destination: '/hello.txt',
+        },
+      ],
+    };
+  },
+};

packages/next/test/fixtures/00-fallback-false-preview/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "revalidate-no-fallback",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start"
+  },
+  "dependencies": {
+    "next": "canary",
+    "react": "17.0.2",
+    "react-dom": "17.0.2"
+  }
+}

packages/next/test/fixtures/00-fallback-false-preview/pages/_app.js

@@ -0,0 +1,7 @@
+import '../styles/globals.css';
+
+function MyApp({ Component, pageProps }) {
+  return <Component {...pageProps} />;
+}
+
+export default MyApp;

packages/next/test/fixtures/00-fallback-false-preview/pages/api/disable.js

@@ -0,0 +1,6 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default (req, res) => {
+  res.clearPreviewData({});
+  res.send('disabled preview');
+};

packages/next/test/fixtures/00-fallback-false-preview/pages/api/enable.js

@@ -0,0 +1,6 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default (req, res) => {
+  res.setPreviewData({});
+  res.send('enabled preview');
+};

packages/next/test/fixtures/00-fallback-false-preview/pages/blog-fallback.js

@@ -0,0 +1,3 @@
+export default function Home() {
+  return 'blog fallback rewrite';
+}

packages/next/test/fixtures/00-fallback-false-preview/pages/blog/[slug].js

@@ -0,0 +1,35 @@
+import { useRouter } from 'next/router';
+
+export default function Page(props) {
+  const router = useRouter();
+
+  return (
+    <>
+      <p id="page">blog slug</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{router.pathname}</p>
+      <p id="asPath">{router.asPath}</p>
+    </>
+  );
+}
+
+export function getStaticProps({ params }) {
+  console.log({ blogSlug: true, params });
+
+  return {
+    props: {
+      random: Math.random() + Date.now(),
+      blogSlug: true,
+      params,
+    },
+    revalidate: 1,
+  };
+}
+
+export function getStaticPaths() {
+  return {
+    paths: ['/blog/first', '/blog/second'],
+    fallback: false,
+  };
+}

packages/next/test/fixtures/00-fallback-false-preview/pages/blog/index.js

@@ -0,0 +1,27 @@
+import { useRouter } from 'next/router';
+
+export default function Page(props) {
+  const router = useRouter();
+
+  return (
+    <>
+      <p id="page">blog index</p>
+      <p id="props">{JSON.stringify(props)}</p>
+      <p id="query">{JSON.stringify(router.query)}</p>
+      <p id="pathname">{router.pathname}</p>
+      <p id="asPath">{router.asPath}</p>
+    </>
+  );
+}
+
+export function getStaticProps() {
+  console.log({ blogIndex: true });
+
+  return {
+    props: {
+      random: Math.random() + Date.now(),
+      blogIndex: true,
+    },
+    revalidate: 1,
+  };
+}

packages/next/test/fixtures/00-fallback-false-preview/pages/index.js

@@ -0,0 +1,70 @@
+import Head from 'next/head';
+import Image from 'next/image';
+import styles from '../styles/Home.module.css';
+import VercelLogo from '../public/vercel.png';
+
+export default function Home() {
+  return (
+    <div className={styles.container}>
+      <Head>
+        <title>Create Next App</title>
+        <meta name="description" content="Generated by create next app" />
+        <link rel="icon" href="/favicon.ico" />
+      </Head>
+
+      <main className={styles.main}>
+        <h1 className={styles.title}>
+          Welcome to <a href="https://nextjs.org">Next.js!</a>
+        </h1>
+
+        <p className={styles.description}>
+          Get started by editing{' '}
+          <code className={styles.code}>pages/index.js</code>
+        </p>
+
+        <div className={styles.grid}>
+          <a href="https://nextjs.org/docs" className={styles.card}>
+            <h2>Documentation &rarr;</h2>
+            <p>Find in-depth information about Next.js features and API.</p>
+          </a>
+
+          <a href="https://nextjs.org/learn" className={styles.card}>
+            <h2>Learn &rarr;</h2>
+            <p>Learn about Next.js in an interactive course with quizzes!</p>
+          </a>
+
+          <a
+            href="https://github.com/vercel/next.js/tree/master/examples"
+            className={styles.card}
+          >
+            <h2>Examples &rarr;</h2>
+            <p>Discover and deploy boilerplate example Next.js projects.</p>
+          </a>
+
+          <a
+            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
+            className={styles.card}
+          >
+            <h2>Deploy &rarr;</h2>
+            <p>
+              Instantly deploy your Next.js site to a public URL with Vercel.
+            </p>
+          </a>
+        </div>
+      </main>
+
+      <footer className={styles.footer}>
+        <a
+          href="https://vercel.com?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          Powered by{' '}
+          <span className={styles.logo}>
+            <Image src={VercelLogo} alt="Vercel Logo" width={72} height={16} />
+          </span>
+        </a>
+      </footer>
+    </div>
+  );
+}

packages/next/test/fixtures/00-fallback-false-preview/public/hello.txt

@@ -0,0 +1 @@
+blog fallback rewrite

packages/next/test/fixtures/00-fallback-false-preview/styles/Home.module.css

@@ -0,0 +1,121 @@
+.container {
+  min-height: 100vh;
+  padding: 0 0.5rem;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  height: 100vh;
+}
+
+.main {
+  padding: 5rem 0;
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+.footer {
+  width: 100%;
+  height: 100px;
+  border-top: 1px solid #eaeaea;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.footer a {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  flex-grow: 1;
+}
+
+.title a {
+  color: #0070f3;
+  text-decoration: none;
+}
+
+.title a:hover,
+.title a:focus,
+.title a:active {
+  text-decoration: underline;
+}
+
+.title {
+  margin: 0;
+  line-height: 1.15;
+  font-size: 4rem;
+}
+
+.title,
+.description {
+  text-align: center;
+}
+
+.description {
+  line-height: 1.5;
+  font-size: 1.5rem;
+}
+
+.code {
+  background: #fafafa;
+  border-radius: 5px;
+  padding: 0.75rem;
+  font-size: 1.1rem;
+  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
+    Bitstream Vera Sans Mono, Courier New, monospace;
+}
+
+.grid {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-wrap: wrap;
+  max-width: 800px;
+  margin-top: 3rem;
+}
+
+.card {
+  margin: 1rem;
+  padding: 1.5rem;
+  text-align: left;
+  color: inherit;
+  text-decoration: none;
+  border: 1px solid #eaeaea;
+  border-radius: 10px;
+  transition: color 0.15s ease, border-color 0.15s ease;
+  width: 45%;
+}
+
+.card:hover,
+.card:focus,
+.card:active {
+  color: #0070f3;
+  border-color: #0070f3;
+}
+
+.card h2 {
+  margin: 0 0 1rem 0;
+  font-size: 1.5rem;
+}
+
+.card p {
+  margin: 0;
+  font-size: 1.25rem;
+  line-height: 1.5;
+}
+
+.logo {
+  height: 1em;
+  margin-left: 0.5rem;
+}
+
+@media (max-width: 600px) {
+  .grid {
+    width: 100%;
+    flex-direction: column;
+  }
+}

packages/next/test/fixtures/00-fallback-false-preview/styles/globals.css

@@ -0,0 +1,16 @@
+html,
+body {
+  padding: 0;
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+* {
+  box-sizing: border-box;
+}

packages/next/test/fixtures/00-fallback-false-preview/vercel.json

@@ -0,0 +1,39 @@
+{
+  "builds": [
+    {
+      "src": "package.json",
+      "use": "@vercel/next"
+    }
+  ],
+  "probes": [
+    {
+      "path": "/",
+      "status": 200,
+      "mustContain": "pages/index.js"
+    },
+    {
+      "path": "/",
+      "status": 200,
+      "mustContain": "pages/index.js"
+    },
+    {
+      "path": "/_next/image?url=%2Fvercel.png&w=256&q=75",
+      "status": 200,
+      "responseHeaders": {
+        "cache-control": "public, max-age=0, must-revalidate"
+      }
+    },
+    {
+      "path": "/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fvercel.23a2f7d8.png&w=256&q=75",
+      "status": 200,
+      "responseHeaders": {
+        "cache-control": "public,max-age=31536000,immutable"
+      }
+    },
+    {
+      "path": "/blog/test-123",
+      "status": 200,
+      "mustContain": "blog fallback rewrite"
+    }
+  ]
+}

packages/next/test/fixtures/00-i18n-404-lambda/index.test.js

@@ -0,0 +1,8 @@
+const path = require('path');
+const { deployAndTest } = require('../../utils');
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    await deployAndTest(__dirname);
+  });
+});

packages/next/test/fixtures/00-i18n-404-lambda/next.config.js

@@ -0,0 +1,9 @@
+module.exports = {
+  generateBuildId() {
+    return 'testing-build-id';
+  },
+  i18n: {
+    locales: ['en', 'fr', 'nl'],
+    defaultLocale: 'en',
+  },
+};

packages/next/test/fixtures/00-i18n-404-lambda/package.json

@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "next": "canary",
+    "react": "latest",
+    "react-dom": "latest"
+  }
+}

packages/next/test/fixtures/00-i18n-404-lambda/pages/404.js

@@ -0,0 +1,3 @@
+export default function NotFound() {
+  return 'not found page';
+}

packages/next/test/fixtures/00-i18n-404-lambda/pages/_app.js

@@ -0,0 +1,15 @@
+import App from 'next/app';
+
+function MyApp({ Component, pageProps }) {
+  return <Component {...pageProps} />;
+}
+
+MyApp.getInitialProps = async appContext => {
+  const appProps = await App.getInitialProps(appContext);
+
+  return {
+    ...appProps,
+  };
+};
+
+export default MyApp;

packages/next/test/fixtures/00-i18n-404-lambda/pages/another.js

@@ -0,0 +1,11 @@
+export default function Another() {
+  return 'another page';
+}
+
+export const getStaticProps = ({ locale }) => ({
+  props: {
+    locale,
+    hello: 'world',
+  },
+  revalidate: 1,
+});

packages/next/test/fixtures/00-i18n-404-lambda/pages/api/hello.js

@@ -0,0 +1,6 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default (req, res) => {
+  res.statusCode = 200;
+  res.json({ name: 'John Doe' });
+};

packages/next/test/fixtures/00-i18n-404-lambda/pages/index.js

@@ -0,0 +1,11 @@
+export default function Home() {
+  return 'index page';
+}
+
+export const getServerSideProps = ({ locale }) => ({
+  props: {
+    locale,
+    hello: 'world',
+    gsspData: true,
+  },
+});

packages/next/test/fixtures/00-i18n-404-lambda/vercel.json

@@ -0,0 +1,53 @@
+{
+  "version": 2,
+  "builds": [{ "src": "package.json", "use": "@vercel/next" }],
+  "probes": [
+    {
+      "path": "/non-existent",
+      "status": 404,
+      "mustContain": "not found page"
+    },
+    {
+      "path": "/non-existent",
+      "status": 404,
+      "mustContain": "lang=\"en\""
+    },
+    {
+      "path": "/fr/non-existent",
+      "status": 404,
+      "mustContain": "not found page"
+    },
+    {
+      "path": "/fr/non-existent",
+      "status": 404,
+      "mustContain": "lang=\"fr\""
+    },
+
+    {
+      "path": "/",
+      "status": 200,
+      "mustContain": "index page"
+    },
+    {
+      "path": "/fr",
+      "status": 200,
+      "mustContain": "index page"
+    },
+
+    {
+      "path": "/another",
+      "status": 200,
+      "mustContain": "another page"
+    },
+    {
+      "path": "/fr/another",
+      "status": 200,
+      "mustContain": "another page"
+    },
+    {
+      "path": "/fr/another",
+      "status": 200,
+      "mustContain": "lang=\"fr\""
+    }
+  ]
+}

packages/next/test/fixtures/00-i18n-404-revalidate/index.test.js

@@ -0,0 +1,8 @@
+const path = require('path');
+const { deployAndTest } = require('../../utils');
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    await deployAndTest(__dirname);
+  });
+});

packages/next/test/fixtures/00-i18n-404-revalidate/next.config.js

@@ -0,0 +1,9 @@
+module.exports = {
+  generateBuildId() {
+    return 'testing-build-id';
+  },
+  i18n: {
+    locales: ['en', 'fr', 'nl'],
+    defaultLocale: 'en',
+  },
+};

packages/next/test/fixtures/00-i18n-404-revalidate/package.json

@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "next": "canary",
+    "react": "latest",
+    "react-dom": "latest"
+  }
+}

packages/next/test/fixtures/00-i18n-404-revalidate/pages/404.js

@@ -0,0 +1,13 @@
+export default function NotFound() {
+  return 'not found page';
+}
+
+export const getStaticProps = () => {
+  return {
+    props: {
+      random: Math.random() + Date.now(),
+      hello: 'world',
+    },
+    revalidate: 1,
+  };
+};

packages/next/test/fixtures/00-i18n-404-revalidate/pages/another.js

@@ -0,0 +1,11 @@
+export default function Another() {
+  return 'another page';
+}
+
+export const getStaticProps = ({ locale }) => ({
+  props: {
+    locale,
+    hello: 'world',
+  },
+  revalidate: 1,
+});

packages/next/test/fixtures/00-i18n-404-revalidate/pages/api/hello.js

@@ -0,0 +1,6 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default (req, res) => {
+  res.statusCode = 200;
+  res.json({ name: 'John Doe' });
+};

packages/next/test/fixtures/00-i18n-404-revalidate/pages/index.js

@@ -0,0 +1,11 @@
+export default function Home() {
+  return 'index page';
+}
+
+export const getServerSideProps = ({ locale }) => ({
+  props: {
+    locale,
+    hello: 'world',
+    gsspData: true,
+  },
+});

packages/next/test/fixtures/00-i18n-404-revalidate/vercel.json

@@ -0,0 +1,48 @@
+{
+  "version": 2,
+  "builds": [{ "src": "package.json", "use": "@vercel/next" }],
+  "probes": [
+    {
+      "path": "/non-existent",
+      "status": 404,
+      "mustContain": "not found page"
+    },
+    {
+      "path": "/non-existent",
+      "status": 404,
+      "mustContain": "lang=\"en\""
+    },
+    {
+      "path": "/fr/non-existent",
+      "status": 404,
+      "mustContain": "not found page"
+    },
+    {
+      "path": "/fr/non-existent",
+      "status": 404,
+      "mustContain": "lang=\"fr\""
+    },
+
+    {
+      "path": "/",
+      "status": 200,
+      "mustContain": "index page"
+    },
+    {
+      "path": "/fr",
+      "status": 200,
+      "mustContain": "index page"
+    },
+
+    {
+      "path": "/another",
+      "status": 200,
+      "mustContain": "another page"
+    },
+    {
+      "path": "/fr/another",
+      "status": 200,
+      "mustContain": "another page"
+    }
+  ]
+}

packages/next/test/fixtures/00-i18n-basepath/index.test.js

@@ -0,0 +1,8 @@
+const path = require('path');
+const { deployAndTest } = require('../../utils');
+
+describe(`${__dirname.split(path.sep).pop()}`, () => {
+  it('should deploy and pass probe checks', async () => {
+    await deployAndTest(__dirname);
+  });
+});