Publish Stable

- @vercel/build-utils@5.5.6
 - vercel@28.4.13
 - @vercel/client@12.2.14
 - @vercel/edge@0.1.0
 - @vercel/error-utils@1.0.1
 - @vercel/frameworks@1.1.9
 - @vercel/fs-detectors@3.4.6
 - @vercel/go@2.2.14
 - @vercel/hydrogen@0.0.27
 - @vercel/next@3.2.7
 - @vercel/node-bridge@3.1.0
 - @vercel/node@2.6.0
 - @vercel/python@3.1.23
 - @vercel/redwood@1.0.32
 - @vercel/remix@1.0.33
 - @vercel/routing-utils@2.1.0
 - @vercel/ruby@1.3.40
 - @vercel/static-build@1.0.33
 - @vercel/static-config@2.0.4

.github/CONTRIBUTING.md

@@ -13,6 +13,7 @@ To get started, execute the following:
 ```
 git clone https://github.com/vercel/vercel
 cd vercel
+corepack enable
 yarn install
 yarn bootstrap
 yarn build

.github/workflows/cancel.yml

@@ -1,17 +0,0 @@
-name: Cancel
-on:
-  push:
-    branches:
-    - '**'
-    - '!main'
-
-jobs:
-  cancel:
-    name: 'Cancel Previous Runs'
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-    steps:
-      - uses: styfle/cancel-workflow-action@0.9.1
-        with:
-          workflow_id: test.yml, test-integration-cli.yml, test-unit.yml
-          access_token: ${{ github.token }}

.github/workflows/publish.yml

@@ -18,7 +18,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
     - name: Check Release
       id: check-release
       run: |

.github/workflows/required-pr-label.yml

@@ -10,13 +10,17 @@ jobs:
         uses: actions/github-script@v6
         with:
           script: |
+            let missing = false;
             const labels = context.payload.pull_request.labels.map(l => l.name);
             if (labels.filter(l => l.startsWith('area:')).length === 0) {
-              console.error('\u001b[31mMissing label: Please add at least one "area" label.');
-              process.exit(1);
+              console.error('::error::Missing label: Please add at least one "area" label.');
+              missing = true;
             }
             if (labels.filter(l => l.startsWith('semver:')).length !== 1) {
-              console.error('\u001b[31mMissing label: Please add exactly one "semver" label.');
+              console.error('::error::Missing label: Please add exactly one "semver" label.');
+              missing = true;
+            }
+            if (missing) {
               process.exit(1);
             }
-            console.log('\u001b[32mSuccess: This pull request has correct labels, thanks!');
+            console.log('::notice::Success: This pull request has correct labels, thanks!');

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

@@ -13,6 +13,10 @@ env:
   TURBO_TEAM: 'vercel'
   TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   test:
     name: CLI

.github/workflows/test-unit.yml

@@ -13,6 +13,10 @@ env:
   TURBO_TEAM: 'vercel'
   TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   test:
     name: Unit

.github/workflows/test.yml

@@ -14,6 +14,10 @@ env:
   TURBO_TEAM: 'vercel'
   TURBO_TOKEN: ${{ secrets.TURBO_TOKEN }}
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   setup:
     name: Find Changes
@@ -78,11 +82,11 @@ jobs:
       - run: yarn install --network-timeout 1000000
 
       - name: Build ${{matrix.packageName}} and all its dependencies
-        run: node_modules/.bin/turbo run build --cache-dir=".turbo" --scope=${{matrix.packageName}} --include-dependencies --no-deps
+        run: node utils/gen.js && node_modules/.bin/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 -- ${{ join(matrix.testPaths, ' ') }}
+        run: node utils/gen.js && node_modules/.bin/turbo run test --cache-dir=".turbo" --scope=${{matrix.packageName}} --no-deps -- ${{ join(matrix.testPaths, ' ') }}
         shell: bash
         env:
           VERCEL_CLI_VERSION: ${{ needs.setup.outputs.dplUrl }}/tarballs/vercel.tgz

.gitignore

@@ -28,3 +28,4 @@ test/lib/deployment/failed-page.txt
 __pycache__
 .vercel
 .turbo
+turbo-cache-key.json

DEVELOPING_A_RUNTIME.md

@@ -380,8 +380,8 @@ This is a [class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refere
 
 This is an abstract enumeration type that is implemented by one of the following possible `String` values:
 
+- `nodejs16.x`
 - `nodejs14.x`
-- `nodejs12.x`
 - `go1.x`
 - `java11`
 - `python3.9`

README.md

@@ -19,11 +19,9 @@
 
 ## Vercel
 
-Vercel is a platform for **static sites and frontend frameworks**, built to integrate with your headless content, commerce, or database.
+Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.
 
-We provide a **frictionless developer experience** to take care of the hard things: deploy instantly, scale automatically, and serve personalized content around the globe.
-
-We make it easy for frontend teams to **develop, preview, and ship** delightful user experiences, where performance is the default.
+We enable teams to iterate quickly and develop, preview, and ship delightful user experiences. Vercel has zero-configuration support for 35+ frontend frameworks and integrates with your headless content, commerce, or database of choice.
 
 ## Deploy
 
@@ -37,4 +35,4 @@ For details on how to use Vercel, check out our [documentation](https://vercel.c
 
 - [Code of Conduct](./.github/CODE_OF_CONDUCT.md)
 - [Contributing Guidelines](./.github/CONTRIBUTING.md)
-- [MIT License](./LICENSE)
+- [Apache 2.0 License](./LICENSE)

api/_lib/script/build.ts

@@ -18,6 +18,12 @@ async function main() {
     { recursive: true, force: true }
   );
 
+  await fs.cp(
+    join(repoRoot, 'packages', 'fs-detectors', 'logos'),
+    join(pubDir, 'monorepo-logos'),
+    { recursive: true, force: true }
+  );
+
   const examples = await getExampleList();
   const pathListAll = join(pubDir, 'list-all.json');
   await fs.writeFile(pathListAll, JSON.stringify(examples));

examples/nextjs/.eslintrc.json

@@ -1,3 +0,0 @@
-{
-  "extends": "next/core-web-vitals"
-}

examples/nextjs/next.config.js

@@ -1,7 +1,6 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
-  swcMinify: true,
 }
 
 module.exports = nextConfig

examples/nextjs/package-lock.json

@@ -0,0 +1,637 @@
+{
+  "name": "nextjs",
+  "version": "0.1.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nextjs",
+      "version": "0.1.0",
+      "dependencies": {
+        "next": "13.0.1",
+        "react": "18.2.0",
+        "react-dom": "18.2.0"
+      }
+    },
+    "node_modules/@next/env": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/@next/env/-/env-13.0.1.tgz",
+      "integrity": "sha512-gK60YoFae3s8qi5UgIzbvxOhsh5gKyEaiKH5+kLBUYXLlrPyWJR2xKBj2WqvHkO7wDX7/Hed3DAqjSpU4ijIvQ=="
+    },
+    "node_modules/@next/swc-android-arm-eabi": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm-eabi/-/swc-android-arm-eabi-13.0.1.tgz",
+      "integrity": "sha512-M28QSbohZlNXNn//HY6lV2T3YaMzG58Jwr0YwOdVmOQv6i+7lu6xe3GqQu4kdqInqhLrBXnL+nabFuGTVSHtTg==",
+      "cpu": [
+        "arm"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-android-arm64": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm64/-/swc-android-arm64-13.0.1.tgz",
+      "integrity": "sha512-szmO/i6GoHcPXcbhUKhwBMETWHNXH3ITz9wfxwOOFBNKdDU8pjKsHL88lg28aOiQYZSU1sxu1v1p9KY5kJIZCg==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-darwin-arm64": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-13.0.1.tgz",
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+        "arm64"
+      ],
+      "optional": true,
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+        "darwin"
+      ],
+      "engines": {
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+      }
+    },
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+      "version": "13.0.1",
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+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/browserslist"
+        },
+        {
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+          "url": "https://tidelift.com/funding/github/npm/caniuse-lite"
+        }
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+      },
+      "bin": {
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+      }
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+        "styled-jsx": "5.1.0",
+        "use-sync-external-store": "1.2.0"
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+        "@next/swc-android-arm-eabi": "13.0.1",
+        "@next/swc-android-arm64": "13.0.1",
+        "@next/swc-darwin-arm64": "13.0.1",
+        "@next/swc-darwin-x64": "13.0.1",
+        "@next/swc-freebsd-x64": "13.0.1",
+        "@next/swc-linux-arm-gnueabihf": "13.0.1",
+        "@next/swc-linux-arm64-gnu": "13.0.1",
+        "@next/swc-linux-arm64-musl": "13.0.1",
+        "@next/swc-linux-x64-gnu": "13.0.1",
+        "@next/swc-linux-x64-musl": "13.0.1",
+        "@next/swc-win32-arm64-msvc": "13.0.1",
+        "@next/swc-win32-ia32-msvc": "13.0.1",
+        "@next/swc-win32-x64-msvc": "13.0.1",
+        "@swc/helpers": "0.4.11",
+        "caniuse-lite": "^1.0.30001406",
+        "postcss": "8.4.14",
+        "styled-jsx": "5.1.0",
+        "use-sync-external-store": "1.2.0"
+      }
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+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.2.0.tgz",
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+      "requires": {
+        "loose-envify": "^1.1.0",
+        "scheduler": "^0.23.0"
+      }
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+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.0.tgz",
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+        "loose-envify": "^1.1.0"
+      }
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz",
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+    },
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+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/styled-jsx/-/styled-jsx-5.1.0.tgz",
+      "integrity": "sha512-/iHaRJt9U7T+5tp6TRelLnqBqiaIT0HsO0+vgyj8hK2KUk7aejFqRrumqPUlAqDwAj8IbS/1hk3IhBAAK/FCUQ==",
+      "requires": {
+        "client-only": "0.0.1"
+      }
+    },
+    "tslib": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.1.tgz",
+      "integrity": "sha512-tGyy4dAjRIEwI7BzsB0lynWgOpfqjUdq91XXAlIWD2OwKBH7oCl/GZG/HT4BOHrTlPMOASlMQ7veyTqpmRcrNA=="
+    },
+    "use-sync-external-store": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.2.0.tgz",
+      "integrity": "sha512-eEgnFxGQ1Ife9bzYs6VLi8/4X6CObHMw9Qr9tPY43iKwsPw8xE8+EFsf/2cFZ5S3esXgpWgtSCtLNS41F+sKPA==",
+      "requires": {}
+    }
+  }
+}

examples/nextjs/package.json

@@ -9,12 +9,8 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "next": "12.3.1",
+    "next": "13.0.1",
     "react": "18.2.0",
     "react-dom": "18.2.0"
-  },
-  "devDependencies": {
-    "eslint": "8.23.1",
-    "eslint-config-next": "12.3.1"
   }
 }

examples/nextjs/pages/index.js

@@ -42,6 +42,8 @@ export default function Home() {
 
           <a
             href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
+            target="_blank"
+            rel="noopener noreferrer"
             className={styles.card}
           >
             <h2>Deploy &rarr;</h2>

package.json

@@ -3,6 +3,7 @@
   "version": "0.0.0",
   "private": true,
   "license": "Apache-2.0",
+  "packageManager": "yarn@1.22.19",
   "workspaces": {
     "packages": [
       "packages/*"
@@ -43,14 +44,14 @@
     "publish-canary": "git checkout main && git pull && lerna version prerelease --preid canary --message \"Publish Canary\" --exact",
     "publish-from-github": "./utils/publish.sh",
     "changelog": "node utils/changelog.js",
-    "build": "turbo run build",
+    "build": "node utils/gen.js && turbo run build",
     "vercel-build": "yarn build && yarn run pack && 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 && 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",
+    "test-unit": "yarn test && node utils/gen.js && turbo run test-unit",
+    "test-integration-cli": "node utils/gen.js && turbo run test-integration-cli",
+    "test-integration-once": "node utils/gen.js && turbo run test-integration-once",
+    "test-integration-dev": "node utils/gen.js && turbo run test-integration-dev",
     "lint": "eslint . --ext .ts,.js",
     "prepare": "husky install",
     "pack": "cd utils && node -r ts-eager/register ./pack.ts"

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "5.5.1",
+  "version": "5.5.6",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",

packages/build-utils/src/edge-function.ts

@@ -39,7 +39,7 @@ export class EdgeFunction {
   assets?: { name: string; path: string }[];
 
   /** The regions where the edge function will be executed on */
-  regions?: 'auto' | string[] | 'all' | 'default';
+  regions?: string | string[];
 
   constructor(params: Omit<EdgeFunction, 'type'>) {
     this.type = 'EdgeFunction';

packages/build-utils/src/file-fs-ref.ts

@@ -5,7 +5,13 @@ import path from 'path';
 import Sema from 'async-sema';
 import { FileBase } from './types';
 
-const semaToPreventEMFILE = new Sema(20);
+const DEFAULT_SEMA = 20;
+const semaToPreventEMFILE = new Sema(
+  parseInt(
+    process.env.VERCEL_INTERNAL_FILE_FS_REF_SEMA || String(DEFAULT_SEMA),
+    10
+  ) || DEFAULT_SEMA
+);
 
 interface FileFsRefOptions {
   mode?: number;

packages/build-utils/src/file-ref.ts

@@ -12,7 +12,13 @@ interface FileRefOptions {
   mutable?: boolean;
 }
 
-const semaToDownloadFromS3 = new Sema(5);
+const DEFAULT_SEMA = 5;
+const semaToDownloadFromS3 = new Sema(
+  parseInt(
+    process.env.VERCEL_INTERNAL_FILE_REF_SEMA || String(DEFAULT_SEMA),
+    10
+  ) || DEFAULT_SEMA
+);
 
 class BailableError extends Error {
   public bail: boolean;

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

@@ -3,28 +3,37 @@ import { NodeVersion } from '../types';
 import { NowBuildError } from '../errors';
 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',
-    discontinueDate: new Date('2022-10-03'),
-  },
-  {
-    major: 10,
-    range: '10.x',
-    runtime: 'nodejs10.x',
-    discontinueDate: new Date('2021-04-20'),
-  },
-  {
-    major: 8,
-    range: '8.10.x',
-    runtime: 'nodejs8.10',
-    discontinueDate: new Date('2020-01-06'),
-  },
-] as const;
+function getOptions() {
+  const options = [
+    { major: 16, range: '16.x', runtime: 'nodejs16.x' },
+    { major: 14, range: '14.x', runtime: 'nodejs14.x' },
+    {
+      major: 12,
+      range: '12.x',
+      runtime: 'nodejs12.x',
+      discontinueDate: new Date('2022-10-03'),
+    },
+    {
+      major: 10,
+      range: '10.x',
+      runtime: 'nodejs10.x',
+      discontinueDate: new Date('2021-04-20'),
+    },
+    {
+      major: 8,
+      range: '8.10.x',
+      runtime: 'nodejs8.10',
+      discontinueDate: new Date('2020-01-06'),
+    },
+  ] as const;
+  if (process.env.VERCEL_ALLOW_NODEJS18 === '1') {
+    return [
+      { major: 18, range: '18.x', runtime: 'nodejs18.x' },
+      ...options,
+    ] as const;
+  }
+  return options;
+}
 
 function getHint(isAuto = false) {
   const { major, range } = getLatestNodeVersion();
@@ -34,11 +43,11 @@ function getHint(isAuto = false) {
 }
 
 export function getLatestNodeVersion() {
-  return allOptions[0];
+  return getOptions()[0];
 }
 
 export function getDiscontinuedNodeVersions(): NodeVersion[] {
-  return allOptions.filter(isDiscontinued);
+  return getOptions().filter(isDiscontinued);
 }
 
 export async function getSupportedNodeVersion(
@@ -50,7 +59,7 @@ export async function getSupportedNodeVersion(
   if (engineRange) {
     const found =
       validRange(engineRange) &&
-      allOptions.some(o => {
+      getOptions().some(o => {
         // the array is already in order so return the first
         // match which will be the newest version of node
         selection = o;

packages/build-utils/src/fs/run-user-scripts.ts

@@ -251,33 +251,24 @@ export async function getNodeVersion(
   meta: Meta = {}
 ): Promise<NodeVersion> {
   const latest = getLatestNodeVersion();
-  if (meta && meta.isDev) {
+  if (meta.isDev) {
     // Use the system-installed version of `node` in PATH for `vercel dev`
     return { ...latest, runtime: 'nodejs' };
   }
   const { packageJson } = await scanParentDirs(destPath, true);
   let { nodeVersion } = config;
   let isAuto = true;
-  if (packageJson && packageJson.engines && packageJson.engines.node) {
+  if (packageJson?.engines?.node) {
     const { node } = packageJson.engines;
-    if (
-      nodeVersion &&
-      validRange(node) &&
-      !intersects(nodeVersion, node) &&
-      !meta.isDev
-    ) {
+    if (nodeVersion && validRange(node) && !intersects(nodeVersion, node)) {
       console.warn(
         `Warning: Due to "engines": { "node": "${node}" } in your \`package.json\` file, the Node.js Version defined in your Project Settings ("${nodeVersion}") will not apply. Learn More: http://vercel.link/node-version`
       );
-    } else if (coerce(node)?.raw === node && !meta.isDev) {
+    } else if (coerce(node)?.raw === node) {
       console.warn(
         `Warning: Detected "engines": { "node": "${node}" } in your \`package.json\` with major.minor.patch, but only major Node.js Version can be selected. Learn More: http://vercel.link/node-version`
       );
-    } else if (
-      validRange(node) &&
-      intersects(`${latest.major + 1}.x`, node) &&
-      !meta.isDev
-    ) {
+    } else if (validRange(node) && intersects(`${latest.major + 1}.x`, node)) {
       console.warn(
         `Warning: Detected "engines": { "node": "${node}" } in your \`package.json\` that will automatically upgrade when a new major Node.js Version is released. Learn More: http://vercel.link/node-version`
       );
@@ -461,7 +452,8 @@ export async function runNpmInstall(
     let commandArgs: string[];
     const isPotentiallyBrokenNpm =
       cliType === 'npm' &&
-      nodeVersion?.major === 16 &&
+      (nodeVersion?.major === 16 ||
+        opts.env.PATH?.includes('/node16/bin-npm7')) &&
       !args.includes('--legacy-peer-deps') &&
       spawnOpts?.env?.ENABLE_EXPERIMENTAL_COREPACK !== '1';
 

packages/build-utils/src/lambda.ts

@@ -23,6 +23,7 @@ export interface LambdaOptionsBase {
   regions?: string[];
   supportsMultiPayloads?: boolean;
   supportsWrapper?: boolean;
+  experimentalResponseStreaming?: boolean;
 }
 
 export interface LambdaOptionsWithFiles extends LambdaOptionsBase {
@@ -60,6 +61,7 @@ export class Lambda {
   zipBuffer?: Buffer;
   supportsMultiPayloads?: boolean;
   supportsWrapper?: boolean;
+  experimentalResponseStreaming?: boolean;
 
   constructor(opts: LambdaOptions) {
     const {
@@ -72,6 +74,7 @@ export class Lambda {
       regions,
       supportsMultiPayloads,
       supportsWrapper,
+      experimentalResponseStreaming,
     } = opts;
     if ('files' in opts) {
       assert(typeof opts.files === 'object', '"files" must be an object');
@@ -132,6 +135,7 @@ export class Lambda {
     this.zipBuffer = 'zipBuffer' in opts ? opts.zipBuffer : undefined;
     this.supportsMultiPayloads = supportsMultiPayloads;
     this.supportsWrapper = supportsWrapper;
+    this.experimentalResponseStreaming = experimentalResponseStreaming;
   }
 
   async createZip(): Promise<Buffer> {

packages/build-utils/src/prerender.ts

@@ -8,6 +8,8 @@ interface PrerenderOptions {
   group?: number;
   bypassToken?: string | null /* optional to be non-breaking change */;
   allowQuery?: string[];
+  initialHeaders?: Record<string, string>;
+  initialStatus?: number;
 }
 
 export class Prerender {
@@ -18,6 +20,8 @@ export class Prerender {
   public group?: number;
   public bypassToken: string | null;
   public allowQuery?: string[];
+  public initialHeaders?: Record<string, string>;
+  public initialStatus?: number;
 
   constructor({
     expiration,
@@ -26,6 +30,8 @@ export class Prerender {
     group,
     bypassToken,
     allowQuery,
+    initialHeaders,
+    initialStatus,
   }: PrerenderOptions) {
     this.type = 'Prerender';
     this.expiration = expiration;
@@ -64,6 +70,30 @@ export class Prerender {
     }
     this.fallback = fallback;
 
+    if (initialHeaders !== undefined) {
+      if (
+        !initialHeaders ||
+        typeof initialHeaders !== 'object' ||
+        Object.entries(initialHeaders).some(
+          ([key, value]) => typeof key !== 'string' || typeof value !== 'string'
+        )
+      ) {
+        throw new Error(
+          `The \`initialHeaders\` argument for \`Prerender\` must be an object with string key/values`
+        );
+      }
+      this.initialHeaders = initialHeaders;
+    }
+
+    if (initialStatus !== undefined) {
+      if (initialStatus <= 0 || !Number.isInteger(initialStatus)) {
+        throw new Error(
+          `The \`initialStatus\` argument for \`Prerender\` must be a natural number.`
+        );
+      }
+      this.initialStatus = initialStatus;
+    }
+
     if (allowQuery !== undefined) {
       if (!Array.isArray(allowQuery)) {
         throw new Error(

packages/build-utils/test/fixtures/14-npm-6-legacy-peer-deps/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+.vercel

packages/build-utils/test/fixtures/14-npm-6-legacy-peer-deps/package-lock.json

@@ -0,0 +1,64 @@
+{
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="
+    },
+    "loose-envify": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
+      "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
+      "requires": {
+        "js-tokens": "^3.0.0 || ^4.0.0"
+      }
+    },
+    "object-assign": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+      "integrity": "sha512-rJgTQnkUnH1sFw8yT6VSU3zD3sWmu6sZhIseY8VX+GRu3P6F7Fu+JNDoXfklElbLJSnc3FUQHVe4cU5hj+BcUg=="
+    },
+    "prop-types": {
+      "version": "15.8.1",
+      "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
+      "integrity": "sha512-oj87CgZICdulUohogVAR7AjlC0327U4el4L6eAvOqCeudMDVU0NThNaV+b9Df4dXgSP1gXMTnPdhfe/2qDH5cg==",
+      "requires": {
+        "loose-envify": "^1.4.0",
+        "object-assign": "^4.1.1",
+        "react-is": "^16.13.1"
+      }
+    },
+    "react": {
+      "version": "16.8.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.8.0.tgz",
+      "integrity": "sha512-g+nikW2D48kqgWSPwNo0NH9tIGG3DsQFlrtrQ1kj6W77z5ahyIHG0w8kPpz4Sdj6gyLnz0lEd/xsjOoGge2MYQ==",
+      "requires": {
+        "loose-envify": "^1.1.0",
+        "object-assign": "^4.1.1",
+        "prop-types": "^15.6.2",
+        "scheduler": "^0.13.0"
+      }
+    },
+    "react-is": {
+      "version": "16.13.1",
+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
+      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="
+    },
+    "scheduler": {
+      "version": "0.13.6",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.13.6.tgz",
+      "integrity": "sha512-IWnObHt413ucAYKsD9J1QShUKkbKLQQHdxRyw73sw4FN26iWr3DY/H34xGPe4nmL1DwXyWmSWmMrA9TfQbE/XQ==",
+      "requires": {
+        "loose-envify": "^1.1.0",
+        "object-assign": "^4.1.1"
+      }
+    },
+    "swr": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/swr/-/swr-1.3.0.tgz",
+      "integrity": "sha512-dkghQrOl2ORX9HYrMDtPa7LTVHJjCTeZoB1dqTbnnEDlSvN8JEKpYIYurDfvbQFUUS8Cg8PceFVZNkW0KNNYPw=="
+    }
+  }
+}

packages/build-utils/test/fixtures/14-npm-6-legacy-peer-deps/package.json

@@ -0,0 +1,11 @@
+{
+  "private": true,
+  "scripts": {
+    "build": "mkdir -p public && echo 'legacy peer deps' > public/index.txt"
+  },
+  "packageManager": "npm@6.14.17",
+  "dependencies": {
+    "swr": "1.3.0",
+    "react": "16.8.0"
+  }
+}

packages/build-utils/test/fixtures/14-npm-6-legacy-peer-deps/probes.json

@@ -0,0 +1,3 @@
+{
+  "probes": [{ "path": "/", "mustContain": "legacy peer deps" }]
+}

packages/build-utils/test/unit.run-npm-install.test.ts

@@ -34,7 +34,7 @@ it('should not include peer dependencies when missing VERCEL_NPM_LEGACY_PEER_DEP
   const fixture = path.join(__dirname, 'fixtures', '20-npm-7');
   const meta: Meta = {};
   const spawnOpts = getTestSpawnOpts({});
-  const nodeVersion = { major: 16 } as any;
+  const nodeVersion = getNodeVersion(16);
   await runNpmInstall(fixture, [], spawnOpts, meta, nodeVersion);
   expect(spawnMock.mock.calls.length).toBe(1);
   const args = spawnMock.mock.calls[0];
@@ -71,10 +71,35 @@ it('should include peer dependencies when VERCEL_NPM_LEGACY_PEER_DEPS=1 on node1
   });
 });
 
-it('should not include peer dependencies when VERCEL_NPM_LEGACY_PEER_DEPS=1 on node14', async () => {
+it('should include peer dependencies when VERCEL_NPM_LEGACY_PEER_DEPS=1 on node14 and npm7+', async () => {
   const fixture = path.join(__dirname, 'fixtures', '20-npm-7');
   const meta: Meta = {};
   const spawnOpts = getTestSpawnOpts({ VERCEL_NPM_LEGACY_PEER_DEPS: '1' });
+
+  const nodeVersion = getNodeVersion(14);
+  await runNpmInstall(fixture, [], spawnOpts, meta, nodeVersion);
+  expect(spawnMock.mock.calls.length).toBe(1);
+  const args = spawnMock.mock.calls[0];
+  expect(args[0]).toEqual('npm');
+  expect(args[1]).toEqual([
+    'install',
+    '--no-audit',
+    '--unsafe-perm',
+    '--legacy-peer-deps',
+  ]);
+  expect(args[2]).toEqual({
+    cwd: fixture,
+    prettyCommand: 'npm install',
+    stdio: 'inherit',
+    env: expect.any(Object),
+  });
+});
+
+it('should not include peer dependencies when VERCEL_NPM_LEGACY_PEER_DEPS=1 on node14 and npm6', async () => {
+  const fixture = path.join(__dirname, 'fixtures', '14-npm-6-legacy-peer-deps');
+  const meta: Meta = {};
+  const spawnOpts = getTestSpawnOpts({ VERCEL_NPM_LEGACY_PEER_DEPS: '1' });
+
   const nodeVersion = getNodeVersion(14);
   await runNpmInstall(fixture, [], spawnOpts, meta, nodeVersion);
   expect(spawnMock.mock.calls.length).toBe(1);

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

@@ -216,10 +216,6 @@ it('should download symlinks even with incorrect file', async () => {
 });
 
 it('should only match supported node versions, otherwise throw an error', async () => {
-  expect(await getSupportedNodeVersion('12.x', false)).toHaveProperty(
-    'major',
-    12
-  );
   expect(await getSupportedNodeVersion('14.x', false)).toHaveProperty(
     'major',
     14
@@ -240,10 +236,6 @@ it('should only match supported node versions, otherwise throw an error', async
   await expectBuilderError(getSupportedNodeVersion('foo', true), autoMessage);
   await expectBuilderError(getSupportedNodeVersion('=> 10', true), autoMessage);
 
-  expect(await getSupportedNodeVersion('12.x', true)).toHaveProperty(
-    'major',
-    12
-  );
   expect(await getSupportedNodeVersion('14.x', true)).toHaveProperty(
     'major',
     14
@@ -273,24 +265,41 @@ it('should only match supported node versions, otherwise throw an error', async
 
 it('should match all semver ranges', async () => {
   // See https://docs.npmjs.com/files/package.json#engines
-  expect(await getSupportedNodeVersion('12.0.0')).toHaveProperty('major', 12);
-  expect(await getSupportedNodeVersion('12.x')).toHaveProperty('major', 12);
+  expect(await getSupportedNodeVersion('14.0.0')).toHaveProperty('major', 14);
+  expect(await getSupportedNodeVersion('14.x')).toHaveProperty('major', 14);
   expect(await getSupportedNodeVersion('>=10')).toHaveProperty('major', 16);
   expect(await getSupportedNodeVersion('>=10.3.0')).toHaveProperty('major', 16);
-  expect(await getSupportedNodeVersion('11.5.0 - 12.5.0')).toHaveProperty(
+  expect(await getSupportedNodeVersion('16.5.0 - 16.9.0')).toHaveProperty(
     'major',
-    12
+    16
   );
-  expect(await getSupportedNodeVersion('>=9.5.0 <=12.5.0')).toHaveProperty(
-    'major',
-    12
-  );
-  expect(await getSupportedNodeVersion('~12.5.0')).toHaveProperty('major', 12);
-  expect(await getSupportedNodeVersion('^12.5.0')).toHaveProperty('major', 12);
-  expect(await getSupportedNodeVersion('12.5.0 - 14.5.0')).toHaveProperty(
+  expect(await getSupportedNodeVersion('>=9.5.0 <=14.5.0')).toHaveProperty(
     'major',
     14
   );
+  expect(await getSupportedNodeVersion('~14.5.0')).toHaveProperty('major', 14);
+  expect(await getSupportedNodeVersion('^14.5.0')).toHaveProperty('major', 14);
+  expect(await getSupportedNodeVersion('14.5.0 - 14.20.0')).toHaveProperty(
+    'major',
+    14
+  );
+});
+
+it('should only allow nodejs18.x when env var is set', async () => {
+  try {
+    expect(getLatestNodeVersion()).toHaveProperty('major', 16);
+    expect(getSupportedNodeVersion('18.x')).rejects.toThrow();
+
+    process.env.VERCEL_ALLOW_NODEJS18 = '1';
+
+    expect(getLatestNodeVersion()).toHaveProperty('major', 18);
+    expect(await getSupportedNodeVersion('18.x')).toHaveProperty('major', 18);
+    expect(await getSupportedNodeVersion('18')).toHaveProperty('major', 18);
+    expect(await getSupportedNodeVersion('18.1.0')).toHaveProperty('major', 18);
+    expect(await getSupportedNodeVersion('>=16')).toHaveProperty('major', 18);
+  } finally {
+    delete process.env.VERCEL_ALLOW_NODEJS18;
+  }
 });
 
 it('should ignore node version in vercel dev getNodeVersion()', async () => {
@@ -441,6 +450,38 @@ it('should warn for deprecated versions, soon to be discontinued', async () => {
   global.Date.now = realDateNow;
 });
 
+it('should support initialHeaders and initialStatus correctly', async () => {
+  const { Prerender } = require('@vercel/build-utils/dist/prerender.js');
+  new Prerender({
+    expiration: 1,
+    fallback: null,
+    group: 1,
+    bypassToken: 'some-long-bypass-token-to-make-it-work',
+    initialHeaders: {
+      'content-type': 'application/json',
+      'x-initial': 'true',
+    },
+    initialStatus: 308,
+  });
+  new Prerender({
+    expiration: 1,
+    fallback: null,
+    group: 1,
+    bypassToken: 'some-long-bypass-token-to-make-it-work',
+    initialStatus: 308,
+  });
+  new Prerender({
+    expiration: 1,
+    fallback: null,
+    group: 1,
+    bypassToken: 'some-long-bypass-token-to-make-it-work',
+    initialHeaders: {
+      'content-type': 'application/json',
+      'x-initial': 'true',
+    },
+  });
+});
+
 it('should support require by path for legacy builders', () => {
   const index = require('@vercel/build-utils');
 

packages/cli/README.md

@@ -10,11 +10,9 @@
 
 ## Usage
 
-Vercel is a platform for **static sites and frontend frameworks**, built to integrate with your headless content, commerce, or database.
+Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.
 
-We provide a **frictionless developer experience** to take care of the hard things: deploy instantly, scale automatically, and serve personalized content around the globe.
-
-We make it easy for frontend teams to **develop, preview, and ship** delightful user experiences, where performance is the default.
+We enable teams to iterate quickly and develop, preview, and ship delightful user experiences. Vercel has zero-configuration support for 35+ frontend frameworks and integrates with your headless content, commerce, or database of choice.
 
 To install the latest version of Vercel CLI, run this command:
 

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "28.4.3",
+  "version": "28.4.13",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -41,16 +41,16 @@
     "node": ">= 14"
   },
   "dependencies": {
-    "@vercel/build-utils": "5.5.1",
-    "@vercel/go": "2.2.9",
-    "@vercel/hydrogen": "0.0.22",
-    "@vercel/next": "3.1.30",
-    "@vercel/node": "2.5.19",
-    "@vercel/python": "3.1.18",
-    "@vercel/redwood": "1.0.27",
-    "@vercel/remix": "1.0.28",
-    "@vercel/ruby": "1.3.35",
-    "@vercel/static-build": "1.0.27",
+    "@vercel/build-utils": "5.5.6",
+    "@vercel/go": "2.2.14",
+    "@vercel/hydrogen": "0.0.27",
+    "@vercel/next": "3.2.7",
+    "@vercel/node": "2.6.0",
+    "@vercel/python": "3.1.23",
+    "@vercel/redwood": "1.0.32",
+    "@vercel/remix": "1.0.33",
+    "@vercel/ruby": "1.3.40",
+    "@vercel/static-build": "1.0.33",
     "update-notifier": "5.1.0"
   },
   "devDependencies": {
@@ -95,9 +95,10 @@
     "@types/which": "1.3.2",
     "@types/write-json-file": "2.2.1",
     "@types/yauzl-promise": "2.1.0",
-    "@vercel/client": "12.2.8",
-    "@vercel/frameworks": "1.1.6",
-    "@vercel/fs-detectors": "3.4.0",
+    "@vercel/client": "12.2.14",
+    "@vercel/error-utils": "1.0.1",
+    "@vercel/frameworks": "1.1.9",
+    "@vercel/fs-detectors": "3.4.6",
     "@vercel/fun": "1.0.4",
     "@vercel/ncc": "0.24.0",
     "@zeit/source-map-support": "0.6.2",

packages/cli/src/commands/build.ts

@@ -3,6 +3,7 @@ import chalk from 'chalk';
 import dotenv from 'dotenv';
 import { join, normalize, relative, resolve } from 'path';
 import {
+  getDiscontinuedNodeVersions,
   normalizePath,
   Files,
   FileFsRef,
@@ -467,6 +468,25 @@ async function doBuild(
       );
       const buildResult = await builder.build(buildOptions);
 
+      if (
+        buildResult &&
+        'output' in buildResult &&
+        'runtime' in buildResult.output &&
+        'type' in buildResult.output &&
+        buildResult.output.type === 'Lambda'
+      ) {
+        const lambdaRuntime = buildResult.output.runtime;
+        if (
+          getDiscontinuedNodeVersions().some(o => o.runtime === lambdaRuntime)
+        ) {
+          throw new NowBuildError({
+            code: 'NODEJS_DISCONTINUED_VERSION',
+            message: `The Runtime "${build.use}" is using "${lambdaRuntime}", which is discontinued. Please upgrade your Runtime to a more recent version or consult the author for more details.`,
+            link: 'https://github.com/vercel/vercel/blob/main/DEVELOPING_A_RUNTIME.md#lambdaruntime',
+          });
+        }
+      }
+
       // Store the build result to generate the final `config.json` after
       // all builds have completed
       buildResults.set(build, buildResult);

packages/cli/src/commands/deploy/index.ts

@@ -70,7 +70,7 @@ import getPrebuiltJson from '../../util/deploy/get-prebuilt-json';
 import { createGitMeta } from '../../util/create-git-meta';
 import { isValidArchive } from '../../util/deploy/validate-archive-format';
 import { parseEnv } from '../../util/parse-env';
-import { errorToString, isErrnoException, isError } from '../../util/is-error';
+import { errorToString, isErrnoException, isError } from '@vercel/error-utils';
 import { pickOverrides } from '../../util/projects/project-settings';
 
 export default async (client: Client): Promise<number> => {

packages/cli/src/commands/dev/dev.ts

@@ -3,16 +3,14 @@ import fs from 'fs-extra';
 
 import DevServer from '../../util/dev/server';
 import { parseListen } from '../../util/dev/parse-listen';
-import { ProjectEnvVariable } from '../../types';
 import Client from '../../util/client';
 import { getLinkedProject } from '../../util/projects/link';
 import { ProjectSettings } from '../../types';
-import getDecryptedEnvRecords from '../../util/get-decrypted-env-records';
 import setupAndLink from '../../util/link/setup-and-link';
-import getSystemEnvValues from '../../util/env/get-system-env-values';
 import { getCommandName } from '../../util/pkg-name';
 import param from '../../util/output/param';
 import { OUTPUT_DIR } from '../../util/build/write-build-result';
+import { pullEnvRecords } from '../../util/env/get-env-records';
 
 type Options = {
   '--listen': string;
@@ -57,8 +55,7 @@ export default async function dev(
   }
 
   let projectSettings: ProjectSettings | undefined;
-  let projectEnvs: ProjectEnvVariable[] = [];
-  let systemEnvValues: string[] = [];
+  let envValues: Record<string, string> = {};
   if (link.status === 'linked') {
     const { project, org } = link;
     client.config.currentTeam = org.type === 'team' ? org.id : undefined;
@@ -69,19 +66,15 @@ export default async function dev(
       cwd = join(cwd, project.rootDirectory);
     }
 
-    [{ envs: projectEnvs }, { systemEnvValues }] = await Promise.all([
-      getDecryptedEnvRecords(output, client, project.id, 'vercel-cli:dev'),
-      project.autoExposeSystemEnvs
-        ? getSystemEnvValues(output, client, project.id)
-        : { systemEnvValues: [] },
-    ]);
+    envValues = (
+      await pullEnvRecords(output, client, project.id, 'vercel-cli:dev')
+    ).env;
   }
 
   const devServer = new DevServer(cwd, {
     output,
     projectSettings,
-    projectEnvs,
-    systemEnvValues,
+    envValues,
   });
 
   // If there is no Development Command, we must delete the

packages/cli/src/commands/dev/index.ts

@@ -15,7 +15,7 @@ import readConfig from '../../util/config/read-config';
 import readJSONFile from '../../util/read-json-file';
 import { getPkgName, getCommandName } from '../../util/pkg-name';
 import { CantParseJSONFile } from '../../util/errors-ts';
-import { isErrnoException } from '../../util/is-error';
+import { isErrnoException } from '@vercel/error-utils';
 
 const COMMAND_CONFIG = {
   dev: ['dev'],

packages/cli/src/commands/domains/buy.ts

@@ -11,7 +11,7 @@ import promptBool from '../../util/input/prompt-bool';
 import purchaseDomain from '../../util/domains/purchase-domain';
 import stamp from '../../util/output/stamp';
 import { getCommandName } from '../../util/pkg-name';
-import { errorToString } from '../../util/is-error';
+import { errorToString } from '@vercel/error-utils';
 
 type Options = {};
 

packages/cli/src/commands/env/pull.ts

@@ -4,21 +4,21 @@ import { closeSync, openSync, readSync } from 'fs';
 import { resolve } from 'path';
 import { Project, ProjectEnvTarget } from '../../types';
 import Client from '../../util/client';
-import exposeSystemEnvs from '../../util/dev/expose-system-envs';
 import { emoji, prependEmoji } from '../../util/emoji';
-import getSystemEnvValues from '../../util/env/get-system-env-values';
-import getDecryptedEnvRecords from '../../util/get-decrypted-env-records';
 import confirm from '../../util/input/confirm';
 import { Output } from '../../util/output';
 import param from '../../util/output/param';
 import stamp from '../../util/output/stamp';
 import { getCommandName } from '../../util/pkg-name';
-import { EnvRecordsSource } from '../../util/env/get-env-records';
+import {
+  EnvRecordsSource,
+  pullEnvRecords,
+} from '../../util/env/get-env-records';
 import {
   buildDeltaString,
   createEnvObject,
 } from '../../util/env/diff-env-files';
-import { isErrnoException } from '../../util/is-error';
+import { isErrnoException } from '@vercel/error-utils';
 
 const CONTENTS_PREFIX = '# Created by Vercel CLI\n';
 
@@ -97,20 +97,11 @@ export default async function pull(
   const pullStamp = stamp();
   output.spinner('Downloading');
 
-  const [{ envs: projectEnvs }, { systemEnvValues }] = await Promise.all([
-    getDecryptedEnvRecords(output, client, project.id, source, environment),
-    project.autoExposeSystemEnvs
-      ? getSystemEnvValues(output, client, project.id)
-      : { systemEnvValues: [] },
-  ]);
-
-  const records = exposeSystemEnvs(
-    projectEnvs,
-    systemEnvValues,
-    project.autoExposeSystemEnvs,
-    undefined,
-    environment
-  );
+  const records = (
+    await pullEnvRecords(output, client, project.id, source, {
+      target: environment || ProjectEnvTarget.Development,
+    })
+  ).env;
 
   let deltaString = '';
   let oldEnv;

packages/cli/src/commands/git/index.ts

@@ -1,6 +1,6 @@
 import chalk from 'chalk';
 import Client from '../../util/client';
-import { ensureLink } from '../../util/ensure-link';
+import { ensureLink } from '../../util/link/ensure-link';
 import getArgs from '../../util/get-args';
 import getInvalidSubcommand from '../../util/get-invalid-subcommand';
 import handleError from '../../util/handle-error';
@@ -80,7 +80,7 @@ export default async function main(client: Client) {
   argv._ = argv._.slice(1);
   subcommand = argv._[0];
   const args = argv._.slice(1);
-  const confirm = Boolean(argv['--yes']);
+  const autoConfirm = Boolean(argv['--yes']);
   const { output } = client;
 
   let paths = [process.cwd()];
@@ -90,7 +90,7 @@ export default async function main(client: Client) {
   }
   const { path } = pathValidation;
 
-  const linkedProject = await ensureLink('git', client, path, confirm);
+  const linkedProject = await ensureLink('git', client, path, { autoConfirm });
   if (typeof linkedProject === 'number') {
     return linkedProject;
   }

packages/cli/src/commands/init/index.ts

@@ -7,7 +7,7 @@ import handleError from '../../util/handle-error';
 import logo from '../../util/output/logo';
 import init from './init';
 import { getPkgName } from '../../util/pkg-name';
-import { isError } from '../../util/is-error';
+import { isError } from '@vercel/error-utils';
 
 const COMMAND_CONFIG = {
   init: ['init'],

packages/cli/src/commands/inspect.ts

@@ -13,7 +13,7 @@ import { getDeployment } from '../util/get-deployment';
 import { Deployment } from '@vercel/client';
 import { Build } from '../types';
 import title from 'title';
-import { isErrnoException } from '../util/is-error';
+import { isErrnoException } from '@vercel/error-utils';
 import { isAPIError } from '../util/errors-ts';
 import { URL } from 'url';
 

packages/cli/src/commands/link/index.ts

@@ -3,9 +3,7 @@ import Client from '../../util/client';
 import getArgs from '../../util/get-args';
 import logo from '../../util/output/logo';
 import { getPkgName } from '../../util/pkg-name';
-import setupAndLink from '../../util/link/setup-and-link';
-import { getCommandName } from '../../util/pkg-name';
-import param from '../../util/output/param';
+import { ensureLink } from '../../util/link/ensure-link';
 
 const help = () => {
   console.log(`
@@ -70,31 +68,16 @@ export default async function main(client: Client) {
   }
 
   const cwd = argv._[1] || process.cwd();
-  const link = await setupAndLink(client, cwd, {
+
+  const link = await ensureLink('link', client, cwd, {
+    autoConfirm: !!argv['--yes'],
     forceDelete: true,
-    autoConfirm: argv['--yes'],
     projectName: argv['--project'],
     successEmoji: 'success',
-    setupMsg: 'Set up',
   });
 
-  if (link.status === 'error') {
-    if (link.reason === 'HEADLESS') {
-      client.output.error(
-        `Command ${getCommandName(
-          'link'
-        )} requires confirmation. Use option ${param('--yes')} to confirm.`
-      );
-    }
-    return link.exitCode;
-  } else if (link.status === 'not_linked') {
-    // User aborted project linking questions
-    return 0;
-  } else if (link.status === 'linked') {
-    // Successfully linked
-    return 0;
-  } else {
-    const err: never = link;
-    throw new Error('Unknown link status: ' + err);
+  if (typeof link === 'number') {
+    return link;
   }
+  return 0;
 }

packages/cli/src/commands/list.ts

@@ -17,10 +17,10 @@ import Client from '../util/client';
 import { Deployment } from '@vercel/client';
 import validatePaths from '../util/validate-paths';
 import { getLinkedProject } from '../util/projects/link';
-import { ensureLink } from '../util/ensure-link';
+import { ensureLink } from '../util/link/ensure-link';
 import getScope from '../util/get-scope';
 import { isAPIError } from '../util/errors-ts';
-import { isErrnoException } from '../util/is-error';
+import { isErrnoException } from '@vercel/error-utils';
 
 const help = () => {
   console.log(`
@@ -56,7 +56,7 @@ const help = () => {
   ${chalk.gray('–')} List all deployments for the project ${chalk.dim(
     '`my-app`'
   )} in the team of the currently linked project
-  
+
     ${chalk.cyan(`$ ${getPkgName()} ls my-app`)}
 
   ${chalk.gray('–')} Filter deployments by metadata
@@ -112,7 +112,7 @@ export default async function main(client: Client) {
     return 2;
   }
 
-  const yes = !!argv['--yes'];
+  const autoConfirm = !!argv['--yes'];
   const prod = argv['--prod'] || false;
 
   const meta = parseMeta(argv['--meta']);
@@ -145,7 +145,9 @@ export default async function main(client: Client) {
   // If there's no linked project and user doesn't pass `app` arg,
   // prompt to link their current directory.
   if (status === 'not_linked' && !app) {
-    const linkedProject = await ensureLink('list', client, path, yes);
+    const linkedProject = await ensureLink('list', client, path, {
+      autoConfirm,
+    });
     if (typeof linkedProject === 'number') {
       return linkedProject;
     }

packages/cli/src/commands/logout.ts

@@ -6,7 +6,7 @@ import getArgs from '../util/get-args';
 import Client from '../util/client';
 import { getCommandName, getPkgName } from '../util/pkg-name';
 import { isAPIError } from '../util/errors-ts';
-import { errorToString } from '../util/is-error';
+import { errorToString } from '@vercel/error-utils';
 
 const help = () => {
   console.log(`

packages/cli/src/commands/pull.ts

@@ -4,24 +4,18 @@ import Client from '../util/client';
 import { ProjectEnvTarget } from '../types';
 import { emoji, prependEmoji } from '../util/emoji';
 import getArgs from '../util/get-args';
-import setupAndLink from '../util/link/setup-and-link';
 import logo from '../util/output/logo';
 import stamp from '../util/output/stamp';
 import { getPkgName } from '../util/pkg-name';
-import {
-  getLinkedProject,
-  VERCEL_DIR,
-  VERCEL_DIR_PROJECT,
-} from '../util/projects/link';
+import { VERCEL_DIR, VERCEL_DIR_PROJECT } from '../util/projects/link';
 import { writeProjectSettings } from '../util/projects/project-settings';
 import envPull from './env/pull';
-import { getCommandName } from '../util/pkg-name';
-import param from '../util/output/param';
-import type { Project, Org } from '../types';
+import type { Project } from '../types';
 import {
   isValidEnvTarget,
   getEnvTargetPlaceholder,
 } from '../util/env/env-target';
+import { ensureLink } from '../util/link/ensure-link';
 
 const help = () => {
   return console.log(`
@@ -83,43 +77,6 @@ function parseArgs(client: Client) {
   return argv;
 }
 
-type LinkResult = {
-  org: Org;
-  project: Project;
-};
-async function ensureLink(
-  client: Client,
-  cwd: string,
-  yes: boolean
-): Promise<LinkResult | number> {
-  let link = await getLinkedProject(client, cwd);
-  if (link.status === 'not_linked') {
-    link = await setupAndLink(client, cwd, {
-      autoConfirm: yes,
-      successEmoji: 'link',
-      setupMsg: 'Set up',
-    });
-
-    if (link.status === 'not_linked') {
-      // User aborted project linking questions
-      return 0;
-    }
-  }
-
-  if (link.status === 'error') {
-    if (link.reason === 'HEADLESS') {
-      client.output.error(
-        `Command ${getCommandName(
-          'pull'
-        )} requires confirmation. Use option ${param('--yes')} to confirm.`
-      );
-    }
-    return link.exitCode;
-  }
-
-  return { org: link.org, project: link.project };
-}
-
 async function pullAllEnvFiles(
   environment: ProjectEnvTarget,
   client: Client,
@@ -140,7 +97,9 @@ async function pullAllEnvFiles(
   );
 }
 
-function parseEnvironment(environment = 'development'): ProjectEnvTarget {
+export function parseEnvironment(
+  environment = 'development'
+): ProjectEnvTarget {
   if (!isValidEnvTarget(environment)) {
     throw new Error(
       `environment "${environment}" not supported; must be one of ${getEnvTargetPlaceholder()}`
@@ -156,10 +115,10 @@ export default async function main(client: Client) {
   }
 
   const cwd = argv._[1] || process.cwd();
-  const yes = Boolean(argv['--yes']);
+  const autoConfirm = Boolean(argv['--yes']);
   const environment = parseEnvironment(argv['--environment'] || undefined);
 
-  const link = await ensureLink(client, cwd, yes);
+  const link = await ensureLink('pull', client, cwd, { autoConfirm });
   if (typeof link === 'number') {
     return link;
   }

packages/cli/src/commands/teams/add.ts

@@ -11,7 +11,7 @@ import { getPkgName, getCommandName } from '../../util/pkg-name';
 import Client from '../../util/client';
 import createTeam from '../../util/teams/create-team';
 import patchTeam from '../../util/teams/patch-team';
-import { errorToString, isError } from '../../util/is-error';
+import { errorToString, isError } from '@vercel/error-utils';
 
 const validateSlugKeypress = (data: string, value: string) =>
   // TODO: the `value` here should contain the current value + the keypress

packages/cli/src/commands/teams/invite.ts

@@ -12,7 +12,7 @@ import { email as regexEmail } from '../../util/input/regexes';
 import getTeams from '../../util/teams/get-teams';
 import inviteUserToTeam from '../../util/teams/invite-user-to-team';
 import { isAPIError } from '../../util/errors-ts';
-import { errorToString, isError } from '../../util/is-error';
+import { errorToString, isError } from '@vercel/error-utils';
 
 const validateEmail = (data: string) =>
   regexEmail.test(data.trim()) || data.length === 0;

packages/cli/src/index.ts

@@ -1,5 +1,5 @@
 #!/usr/bin/env node
-import { isErrnoException, isError, errorToString } from './util/is-error';
+import { isErrnoException, isError, errorToString } from '@vercel/error-utils';
 
 try {
   // Test to see if cwd has been deleted before
@@ -610,6 +610,21 @@ const main = async () => {
       return 1;
     }
 
+    if (isErrnoException(err) && err.code === 'ECONNRESET') {
+      // Error message will look like the following:
+      // request to https://api.vercel.com/v2/user failed, reason: socket hang up
+      const matches = /request to https:\/\/(.*?)\//.exec(err.message || '');
+      const hostname = matches?.[1];
+      if (hostname) {
+        output.error(
+          `Connection to ${highlight(
+            hostname
+          )} interrupted. Please verify your internet connectivity and DNS configuration.`
+        );
+      }
+      return 1;
+    }
+
     if (
       isErrnoException(err) &&
       (err.code === 'NOT_AUTHORIZED' || err.code === 'TEAM_DELETED')

packages/cli/src/util/build/import-builders.ts

@@ -16,7 +16,7 @@ import { VERCEL_DIR } from '../projects/link';
 import { Output } from '../output';
 import readJSONFile from '../read-json-file';
 import { CantParseJSONFile } from '../errors-ts';
-import { errorToString, isErrnoException, isError } from '../is-error';
+import { errorToString, isErrnoException, isError } from '@vercel/error-utils';
 import cmd from '../output/cmd';
 import code from '../output/code';
 

packages/cli/src/util/certs/create-cert-from-file.ts

@@ -2,7 +2,7 @@ import { readFileSync } from 'fs';
 import { resolve } from 'path';
 import Client from '../client';
 import { Cert } from '../../types';
-import { isErrnoException } from '../is-error';
+import { isErrnoException } from '@vercel/error-utils';
 import { isAPIError } from '../errors-ts';
 
 export default async function createCertFromFile(

packages/cli/src/util/certs/issue-cert.ts

@@ -2,7 +2,7 @@ import retry from 'async-retry';
 import { Cert } from '../../types';
 import Client from '../client';
 import { isAPIError } from '../errors-ts';
-import { isError } from '../is-error';
+import { isError } from '@vercel/error-utils';
 
 // When it's a configuration error we should retry because of the DNS propagation
 // otherwise we bail to handle the error in the upper level

packages/cli/src/util/client.ts

@@ -23,7 +23,7 @@ import type {
 } from '../types';
 import { sharedPromise } from './promise';
 import { APIError } from './errors-ts';
-import { normalizeError } from './is-error';
+import { normalizeError } from '@vercel/error-utils';
 
 const isSAMLError = (v: any): v is SAMLError => {
   return v && v.saml;

packages/cli/src/util/config/files.ts

@@ -10,7 +10,7 @@ import error from '../output/error';
 import highlight from '../output/highlight';
 import { VercelConfig } from '../dev/types';
 import { AuthConfig, GlobalConfig } from '../../types';
-import { isErrnoException, isError } from '../is-error';
+import { isErrnoException, isError } from '@vercel/error-utils';
 
 const VERCEL_DIR = getGlobalPathConfig();
 const CONFIG_FILE_PATH = join(VERCEL_DIR, 'config.json');

packages/cli/src/util/create-git-meta.ts

@@ -5,7 +5,7 @@ import git from 'git-last-commit';
 import { exec } from 'child_process';
 import { GitMetadata, Project } from '../types';
 import { Output } from './output';
-import { errorToString } from './is-error';
+import { errorToString } from '@vercel/error-utils';
 
 export async function createGitMeta(
   directory: string,

packages/cli/src/util/deploy/process-deployment.ts

@@ -115,29 +115,39 @@ export default async function processDeployment({
           .reduce((a: number, b: number) => a + b, 0);
         const totalSizeHuman = bytes.format(missingSize, { decimalPlaces: 1 });
 
-        uploads.forEach((e: any) =>
-          e.on('progress', () => {
-            const uploadedBytes = uploads.reduce((acc: number, e: any) => {
-              return acc + e.bytesUploaded;
-            }, 0);
+        // When stderr is not a TTY then we only want to
+        // print upload progress in 25% increments
+        let nextStep = 0;
+        const stepSize = now._client.stderr.isTTY ? 0 : 0.25;
 
-            const bar = progress(uploadedBytes, missingSize);
-            if (!bar || uploadedBytes === missingSize) {
-              output.spinner(deployingSpinnerVal, 0);
-            } else {
-              const uploadedHuman = bytes.format(uploadedBytes, {
-                decimalPlaces: 1,
-                fixedDecimals: true,
-              });
+        const updateProgress = () => {
+          const uploadedBytes = uploads.reduce((acc: number, e: any) => {
+            return acc + e.bytesUploaded;
+          }, 0);
+
+          const bar = progress(uploadedBytes, missingSize);
+          if (!bar) {
+            output.spinner(deployingSpinnerVal, 0);
+          } else {
+            const uploadedHuman = bytes.format(uploadedBytes, {
+              decimalPlaces: 1,
+              fixedDecimals: true,
+            });
+            const percent = uploadedBytes / missingSize;
+            if (percent >= nextStep) {
               output.spinner(
                 `Uploading ${chalk.reset(
                   `[${bar}] (${uploadedHuman}/${totalSizeHuman})`
                 )}`,
                 0
               );
+              nextStep += stepSize;
             }
-          })
-        );
+          }
+        };
+
+        uploads.forEach((e: any) => e.on('progress', updateProgress));
+        updateProgress();
       }
 
       if (event.type === 'file-uploaded') {

packages/cli/src/util/dev/expose-system-envs.ts

@@ -1,46 +0,0 @@
-import {
-  ProjectEnvType,
-  ProjectEnvVariable,
-  ProjectEnvTarget,
-} from '../../types';
-import { Env } from '@vercel/build-utils';
-
-function getSystemEnvValue(
-  systemEnvRef: string,
-  { vercelUrl }: { vercelUrl?: string }
-) {
-  if (systemEnvRef === 'VERCEL_URL') {
-    return vercelUrl || '';
-  }
-
-  return '';
-}
-
-export default function exposeSystemEnvs(
-  projectEnvs: ProjectEnvVariable[],
-  systemEnvValues: string[],
-  autoExposeSystemEnvs: boolean | undefined,
-  vercelUrl?: string,
-  target?: ProjectEnvTarget
-) {
-  const envs: Env = {};
-
-  if (autoExposeSystemEnvs) {
-    envs['VERCEL'] = '1';
-    envs['VERCEL_ENV'] = target || 'development';
-
-    for (const key of systemEnvValues) {
-      envs[key] = getSystemEnvValue(key, { vercelUrl });
-    }
-  }
-
-  for (let env of projectEnvs) {
-    if (env.type === ProjectEnvType.System) {
-      envs[env.key] = getSystemEnvValue(env.value, { vercelUrl });
-    } else {
-      envs[env.key] = env.value;
-    }
-  }
-
-  return envs;
-}

packages/cli/src/util/dev/headers.ts

@@ -16,3 +16,75 @@ export function nodeHeadersToFetchHeaders(
   }
   return headers;
 }
+
+/**
+ * Request headers that are not allowed to be overridden by a middleware.
+ */
+const NONOVERRIDABLE_HEADERS: Set<string> = new Set([
+  'host',
+  'connection',
+  'content-length',
+  'transfer-encoding',
+  'keep-alive',
+  'transfer-encoding',
+  'te',
+  'upgrade',
+  'trailer',
+]);
+
+/**
+ * Adds/Updates/Deletes headers in `reqHeaders` based on the response headers
+ * from a middleware (`respHeaders`).
+ *
+ * `x-middleware-override-headers` is a comma-separated list of *all* header
+ * names that should appear in new request headers. Names not in this list
+ * will be deleted.
+ *
+ * `x-middleware-request-*` is the new value for each header. This can't be
+ * omitted, even if the header is not being modified.
+ *
+ */
+export function applyOverriddenHeaders(
+  reqHeaders: { [k: string]: string | string[] | undefined },
+  respHeaders: Headers
+) {
+  const overriddenHeaders = respHeaders.get('x-middleware-override-headers');
+  if (!overriddenHeaders) {
+    return;
+  }
+
+  const overriddenKeys: Set<string> = new Set();
+  for (const key of overriddenHeaders.split(',')) {
+    overriddenKeys.add(key.trim());
+  }
+
+  respHeaders.delete('x-middleware-override-headers');
+
+  // Delete headers.
+  for (const key of Object.keys(reqHeaders)) {
+    if (!NONOVERRIDABLE_HEADERS.has(key) && !overriddenKeys.has(key)) {
+      delete reqHeaders[key];
+    }
+  }
+
+  // Update or add headers.
+  for (const key of overriddenKeys.keys()) {
+    if (NONOVERRIDABLE_HEADERS.has(key)) {
+      continue;
+    }
+
+    const valueKey = 'x-middleware-request-' + key;
+    const newValue = respHeaders.get(valueKey);
+    const oldValue = reqHeaders[key];
+
+    if (oldValue !== newValue) {
+      if (newValue) {
+        reqHeaders[key] = newValue;
+      } else {
+        delete reqHeaders[key];
+      }
+    }
+
+    respHeaders.delete(valueKey);
+  }
+}

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

@@ -85,17 +85,16 @@ import {
   HttpHeadersConfig,
   EnvConfigs,
 } from './types';
-import { ProjectEnvVariable, ProjectSettings } from '../../types';
-import exposeSystemEnvs from './expose-system-envs';
+import { ProjectSettings } from '../../types';
 import { treeKill } from '../tree-kill';
-import { nodeHeadersToFetchHeaders } from './headers';
+import { applyOverriddenHeaders, nodeHeadersToFetchHeaders } from './headers';
 import { formatQueryString, parseQueryString } from './parse-query-string';
 import {
   errorToString,
   isErrnoException,
   isError,
   isSpawnError,
-} from '../is-error';
+} from '@vercel/error-utils';
 import isURL from './is-url';
 import { pickOverrides } from '../projects/project-settings';
 import { replaceLocalhost } from './parse-listen';
@@ -168,15 +167,13 @@ export default class DevServer {
   private blockingBuildsPromise: Promise<void> | null;
   private startPromise: Promise<void> | null;
 
-  private systemEnvValues: string[];
-  private projectEnvs: ProjectEnvVariable[];
+  private envValues: Record<string, string>;
 
   constructor(cwd: string, options: DevServerOptions) {
     this.cwd = cwd;
     this.output = options.output;
     this.envConfigs = { buildEnv: {}, runEnv: {}, allEnv: {} };
-    this.systemEnvValues = options.systemEnvValues || [];
-    this.projectEnvs = options.projectEnvs || [];
+    this.envValues = options.envValues || {};
     this.files = {};
     this.originalProjectSettings = options.projectSettings;
     this.projectSettings = options.projectSettings;
@@ -684,16 +681,13 @@ export default class DevServer {
 
     // If no .env/.build.env is present, use cloud environment variables
     if (Object.keys(allEnv).length === 0) {
-      const cloudEnv = exposeSystemEnvs(
-        this.projectEnvs || [],
-        this.systemEnvValues || [],
-        this.projectSettings?.autoExposeSystemEnvs,
-        this.address.host
-      );
-
-      allEnv = { ...cloudEnv };
-      runEnv = { ...cloudEnv };
-      buildEnv = { ...cloudEnv };
+      const envValues = { ...this.envValues };
+      if (this.address.host) {
+        envValues['VERCEL_URL'] = this.address.host;
+      }
+      allEnv = { ...envValues };
+      runEnv = { ...envValues };
+      buildEnv = { ...envValues };
     }
 
     // legacy NOW_REGION env variable
@@ -1454,7 +1448,9 @@ export default class DevServer {
             }
           );
 
-          if (middlewareRes.status === 500) {
+          const middlewareBody = await middlewareRes.buffer();
+
+          if (middlewareRes.status === 500 && middlewareBody.byteLength === 0) {
             await this.sendError(
               req,
               res,
@@ -1478,6 +1474,9 @@ export default class DevServer {
             'content-length',
             'transfer-encoding',
           ]);
+
+          applyOverriddenHeaders(req.headers, middlewareRes.headers);
+
           for (const [name, value] of middlewareRes.headers) {
             if (name === 'x-middleware-next') {
               shouldContinue = value === '1';
@@ -1496,7 +1495,6 @@ export default class DevServer {
           }
 
           if (!shouldContinue) {
-            const middlewareBody = await middlewareRes.buffer();
             this.setResponseHeaders(res, requestId);
             if (middlewareBody.length > 0) {
               res.setHeader('content-length', middlewareBody.length);

packages/cli/src/util/dev/types.ts

@@ -16,7 +16,7 @@ import {
 import { VercelConfig } from '@vercel/client';
 import { HandleValue, Route } from '@vercel/routing-utils';
 import { Output } from '../output';
-import { ProjectEnvVariable, ProjectSettings } from '../../types';
+import { ProjectSettings } from '../../types';
 import { BuilderWithPkg } from '../build/import-builders';
 
 export { VercelConfig };
@@ -24,8 +24,7 @@ export { VercelConfig };
 export interface DevServerOptions {
   output: Output;
   projectSettings?: ProjectSettings;
-  systemEnvValues?: string[];
-  projectEnvs?: ProjectEnvVariable[];
+  envValues?: Record<string, string>;
 }
 
 export interface EnvConfigs {

packages/cli/src/util/ensure-link.ts

@@ -1,45 +0,0 @@
-import { Org, Project } from '../types';
-import Client from './client';
-import setupAndLink from './link/setup-and-link';
-import param from './output/param';
-import { getCommandName } from './pkg-name';
-import { getLinkedProject } from './projects/link';
-
-type LinkResult = {
-  org: Org;
-  project: Project;
-};
-
-export async function ensureLink(
-  commandName: string,
-  client: Client,
-  cwd: string,
-  yes: boolean
-): Promise<LinkResult | number> {
-  let link = await getLinkedProject(client, cwd);
-  if (link.status === 'not_linked') {
-    link = await setupAndLink(client, cwd, {
-      autoConfirm: yes,
-      successEmoji: 'link',
-      setupMsg: 'Set up',
-    });
-
-    if (link.status === 'not_linked') {
-      // User aborted project linking questions
-      return 0;
-    }
-  }
-
-  if (link.status === 'error') {
-    if (link.reason === 'HEADLESS') {
-      client.output.error(
-        `Command ${getCommandName(
-          commandName
-        )} requires confirmation. Use option ${param('--yes')} to confirm.`
-      );
-    }
-    return link.exitCode;
-  }
-
-  return { org: link.org, project: link.project };
-}

packages/cli/src/util/env/get-env-records.ts

@@ -2,6 +2,7 @@ import { Output } from '../output';
 import Client from '../client';
 import { ProjectEnvVariable, ProjectEnvTarget } from '../../types';
 import { URLSearchParams } from 'url';
+import * as path from 'path';
 
 /** The CLI command that was used that needs the environment variables. */
 export type EnvRecordsSource =
@@ -49,3 +50,40 @@ export default async function getEnvRecords(
 
   return client.fetch<{ envs: ProjectEnvVariable[] }>(url);
 }
+
+interface PullEnvOptions {
+  target?: ProjectEnvTarget | string;
+  gitBranch?: string;
+}
+
+export async function pullEnvRecords(
+  output: Output,
+  client: Client,
+  projectId: string,
+  source: EnvRecordsSource,
+  { target, gitBranch }: PullEnvOptions = {}
+) {
+  output.debug(
+    `Fetching Environment Variables of project ${projectId} and target ${target}`
+  );
+  const query = new URLSearchParams();
+
+  let url = `/v1/env/pull/${projectId}`;
+
+  if (target) {
+    url = path.join(url, target, gitBranch ?? '');
+  }
+
+  if (source) {
+    query.set('source', source);
+  }
+
+  if (Array.from(query).length > 0) {
+    url += `?${query}`;
+  }
+
+  return client.fetch<{
+    env: Record<string, string>;
+    buildEnv: Record<string, string>;
+  }>(url);
+}

packages/cli/src/util/env/get-system-env-values.ts

@@ -1,12 +0,0 @@
-import { Output } from '../output';
-import Client from '../client';
-
-export default async function getSystemEnvValues(
-  output: Output,
-  client: Client,
-  projectId: string
-) {
-  output.debug(`Fetching System Environment Values of project ${projectId}`);
-  const url = `/v6/projects/${projectId}/system-env-values`;
-  return client.fetch<{ systemEnvValues: string[] }>(url);
-}

packages/cli/src/util/env/known-error.ts

@@ -1,4 +1,4 @@
-import { isErrnoException } from '../is-error';
+import { isErrnoException } from '@vercel/error-utils';
 
 const knownErrorsCodes = new Set([
   'PAYMENT_REQUIRED',

packages/cli/src/util/errors-ts.ts

@@ -5,7 +5,7 @@ import { NowError } from './now-error';
 import code from './output/code';
 import { getCommandName } from './pkg-name';
 import chalk from 'chalk';
-import { isError } from './is-error';
+import { isError } from '@vercel/error-utils';
 
 /**
  * This error is thrown when there is an API error with a payload. The error

packages/cli/src/util/get-config.ts

@@ -10,7 +10,7 @@ import humanizePath from './humanize-path';
 import readJSONFile from './read-json-file';
 import { VercelConfig } from './dev/types';
 import { Output } from './output';
-import { isErrnoException } from './is-error';
+import { isErrnoException } from '@vercel/error-utils';
 
 let config: VercelConfig;
 

packages/cli/src/util/get-decrypted-env-records.ts

@@ -1,66 +0,0 @@
-import Client from './client';
-import { Output } from './output/create-output';
-import {
-  ProjectEnvTarget,
-  ProjectEnvType,
-  ProjectEnvVariable,
-  Secret,
-} from '../types';
-import getEnvRecords, { EnvRecordsSource } from './env/get-env-records';
-import { isAPIError } from './errors-ts';
-
-export default async function getDecryptedEnvRecords(
-  output: Output,
-  client: Client,
-  projectId: string,
-  source: EnvRecordsSource,
-  target?: ProjectEnvTarget
-): Promise<{ envs: ProjectEnvVariable[] }> {
-  const { envs } = await getEnvRecords(output, client, projectId, source, {
-    target: target || ProjectEnvTarget.Development,
-    decrypt: true,
-  });
-
-  const envsWithDecryptedSecrets = await Promise.all(
-    envs.map(async ({ id, type, key, value }) => {
-      // it's not possible to create secret env variables for development
-      // anymore but we keep this because legacy env variables with "decryptable"
-      // secret values still exit in our system
-      if (type === ProjectEnvType.Secret) {
-        try {
-          const secretIdOrName = value;
-
-          if (!secretIdOrName) {
-            return { id, type, key, value: '', found: true };
-          }
-
-          output.debug(`Fetching decrypted secret ${secretIdOrName}`);
-          const secret = await client.fetch<Secret>(
-            `/v2/now/secrets/${secretIdOrName}?decrypt=true`
-          );
-
-          return { id, type, key, value: secret.value, found: true };
-        } catch (err: unknown) {
-          if (isAPIError(err) && err.status === 404) {
-            return { id, type, key, value: '', found: false };
-          }
-
-          throw err;
-        }
-      }
-
-      return { id, type, key, value, found: true };
-    })
-  );
-
-  for (let env of envsWithDecryptedSecrets) {
-    if (!env.found) {
-      output.print('');
-      output.warn(
-        `Unable to download variable ${env.key} because associated secret was deleted`
-      );
-    }
-  }
-
-  return { envs: envsWithDecryptedSecrets };
-}

packages/cli/src/util/link/ensure-link.ts

@@ -0,0 +1,58 @@
+import { Org, Project } from '../../types';
+import Client from '../client';
+import setupAndLink from '../link/setup-and-link';
+import param from '../output/param';
+import { getCommandName } from '../pkg-name';
+import { getLinkedProject } from '../projects/link';
+import type { SetupAndLinkOptions } from '../link/setup-and-link';
+
+type LinkResult = {
+  org: Org;
+  project: Project;
+};
+
+/**
+ * Checks if a project is already linked and if not, links the project and
+ * validates the link response.
+ *
+ * @param commandName - The name of the current command to print in the
+ * event of an error
+ * @param client - The Vercel Node.js client instance
+ * @param cwd - The current working directory
+ * @param opts.forceDelete - When `true`, deletes the project's `.vercel`
+ * directory
+ * @param opts.projectName - The project name to use when linking, otherwise
+ * the current directory
+ * @returns {Promise<LinkResult|number>} Returns a numeric exit code when aborted or
+ * error, otherwise an object containing the org an project
+ */
+export async function ensureLink(
+  commandName: string,
+  client: Client,
+  cwd: string,
+  opts: SetupAndLinkOptions
+): Promise<LinkResult | number> {
+  let link = await getLinkedProject(client, cwd);
+
+  if (link.status === 'not_linked') {
+    link = await setupAndLink(client, cwd, opts);
+
+    if (link.status === 'not_linked') {
+      // User aborted project linking questions
+      return 0;
+    }
+  }
+
+  if (link.status === 'error') {
+    if (link.reason === 'HEADLESS') {
+      client.output.error(
+        `Command ${getCommandName(
+          commandName
+        )} requires confirmation. Use option ${param('--yes')} to confirm.`
+      );
+    }
+    return link.exitCode;
+  }
+
+  return { org: link.org, project: link.project };
+}

packages/cli/src/util/link/setup-and-link.ts

@@ -32,8 +32,8 @@ import { isAPIError } from '../errors-ts';
 export interface SetupAndLinkOptions {
   forceDelete?: boolean;
   autoConfirm?: boolean;
-  successEmoji: EmojiLabel;
-  setupMsg: string;
+  successEmoji?: EmojiLabel;
+  setupMsg?: string;
   projectName?: string;
 }
 
@@ -43,8 +43,8 @@ export default async function setupAndLink(
   {
     forceDelete = false,
     autoConfirm = false,
-    successEmoji,
-    setupMsg,
+    successEmoji = 'link',
+    setupMsg = 'Set up',
     projectName,
   }: SetupAndLinkOptions
 ): Promise<ProjectLinkResult> {

packages/cli/src/util/login/email.ts

@@ -7,7 +7,7 @@ import executeLogin from './login';
 import Client from '../client';
 import { LoginResult } from './types';
 import { isAPIError } from '../errors-ts';
-import { errorToString } from '../is-error';
+import { errorToString } from '@vercel/error-utils';
 
 export default async function doEmailLogin(
   client: Client,

packages/cli/src/util/login/login.ts

@@ -1,6 +1,6 @@
 import Client from '../client';
 import { InvalidEmail, AccountNotFound, isAPIError } from '../errors-ts';
-import { errorToString } from '../is-error';
+import { errorToString } from '@vercel/error-utils';
 import { LoginData } from './types';
 
 export default async function login(

packages/cli/src/util/output/create-output.ts

@@ -2,7 +2,9 @@ import chalk from 'chalk';
 import renderLink from './link';
 import wait, { StopSpinner } from './wait';
 import type { WritableTTY } from '../../types';
-import { errorToString } from '../is-error';
+import { errorToString } from '@vercel/error-utils';
+
+const IS_TEST = process.env.NODE_ENV === 'test';
 
 export interface OutputOptions {
   debug?: boolean;
@@ -108,12 +110,15 @@ export class Output {
   };
 
   spinner = (message: string, delay: number = 300): void => {
-    this.spinnerMessage = message;
     if (this.debugEnabled) {
       this.debug(`Spinner invoked (${message}) with a ${delay}ms delay`);
       return;
     }
-    if (this.stream.isTTY) {
+    if (IS_TEST || !this.stream.isTTY) {
+      this.print(`${message}\n`);
+    } else {
+      this.spinnerMessage = message;
+
       if (this._spinner) {
         this._spinner.text = message;
       } else {
@@ -125,8 +130,6 @@ export class Output {
           delay
         );
       }
-    } else {
-      this.print(`${message}\n`);
     }
   };
 

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

@@ -18,7 +18,7 @@ import { prependEmoji, emoji, EmojiLabel } from '../emoji';
 import { isDirectory } from '../config/global-path';
 import { NowBuildError, getPlatformEnv } from '@vercel/build-utils';
 import outputCode from '../output/code';
-import { isErrnoException, isError } from '../is-error';
+import { isErrnoException, isError } from '@vercel/error-utils';
 
 const readFile = promisify(fs.readFile);
 const writeFile = promisify(fs.writeFile);

packages/cli/src/util/report-error.ts

@@ -1,7 +1,7 @@
 import Client from './client';
 import getScope from './get-scope';
 import getArgs from './get-args';
-import { isError } from './is-error';
+import { isError } from '@vercel/error-utils';
 import type { Team, User } from '../types';
 
 export default async function reportError(

packages/cli/test/dev/fixtures/30-next-image-optimization/package.json

@@ -6,7 +6,7 @@
   },
   "dependencies": {
     "next": "latest",
-    "react": "^17.0.0",
-    "react-dom": "^17.0.0"
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
   }
 }

packages/cli/test/dev/fixtures/middleware-500-response/middleware.js

@@ -1 +1 @@
-export default () => new Response(null, { status: 500 });
+export default () => new Response('Example Error', { status: 500 });

packages/cli/test/dev/fixtures/middleware-request-headers-override/api/dump-headers.js

@@ -0,0 +1,3 @@
+export default (req, res) => {
+  res.json(req.headers);
+};

packages/cli/test/dev/fixtures/middleware-request-headers-override/middleware.js

@@ -0,0 +1,18 @@
+export default () => {
+  return new Response(null, {
+    headers: {
+      'x-middleware-next': '1',
+      'x-middleware-override-headers':
+        'x-from-client-a,x-from-client-b,x-from-middleware-a,x-from-middleware-b,transfer-encoding',
+      // Headers to be preserved.
+      'x-middleware-request-x-from-client-a': 'hello from client',
+      // Headers to be modified by the middleware.
+      'x-middleware-request-x-from-client-b': 'hello from middleware',
+      // Headers to be added by the middleware.
+      'x-middleware-request-x-from-middleware-a': 'hello a!',
+      'x-middleware-request-x-from-middleware-b': 'hello b!',
+      // Headers not allowed by the dev server: will be ignored.
+      'transfer-encoding': 'gzip, chunked',
+    },
+  });
+};

packages/cli/test/dev/integration-4.test.ts

@@ -2,6 +2,7 @@ import ms from 'ms';
 import fs from 'fs-extra';
 import { isIP } from 'net';
 import { join } from 'path';
+import { Response } from 'node-fetch';
 
 const {
   fetch,
@@ -550,7 +551,7 @@ test(
 test(
   '[vercel dev] Middleware with an explicit 500 response',
   testFixtureStdio('middleware-500-response', async (testPath: any) => {
-    await testPath(500, '/', /EDGE_FUNCTION_INVOCATION_FAILED/);
+    await testPath(500, '/', 'Example Error');
   })
 );
 
@@ -613,3 +614,72 @@ test(
     { skipDeploy: true }
   )
 );
+
+test(
+  '[vercel dev] Middleware can override request headers',
+  testFixtureStdio(
+    'middleware-request-headers-override',
+    async (testPath: any) => {
+      await testPath(
+        200,
+        '/api/dump-headers',
+        (actual: string, res: Response) => {
+          // Headers sent to the API route.
+          const headers = JSON.parse(actual);
+
+          // Preserved headers.
+          expect(headers).toHaveProperty(
+            'x-from-client-a',
+            'hello from client'
+          );
+
+          // Headers added/modified by the middleware.
+          expect(headers).toHaveProperty(
+            'x-from-client-b',
+            'hello from middleware'
+          );
+          expect(headers).toHaveProperty('x-from-middleware-a', 'hello a!');
+          expect(headers).toHaveProperty('x-from-middleware-b', 'hello b!');
+
+          // Headers deleted by the middleware.
+          expect(headers).not.toHaveProperty('x-from-client-c');
+
+          // Internal headers should not be visible from API routes.
+          expect(headers).not.toHaveProperty('x-middleware-override-headers');
+          expect(headers).not.toHaveProperty(
+            'x-middleware-request-from-middleware-a'
+          );
+          expect(headers).not.toHaveProperty(
+            'x-middleware-request-from-middleware-b'
+          );
+
+          // Request headers should not be visible from clients.
+          const respHeaders = Object.fromEntries(res.headers.entries());
+          expect(respHeaders).not.toHaveProperty(
+            'x-middleware-override-headers'
+          );
+          expect(respHeaders).not.toHaveProperty(
+            'x-middleware-request-from-middleware-a'
+          );
+          expect(respHeaders).not.toHaveProperty(
+            'x-middleware-request-from-middleware-b'
+          );
+          expect(respHeaders).not.toHaveProperty('from-middleware-a');
+          expect(respHeaders).not.toHaveProperty('from-middleware-b');
+          expect(respHeaders).not.toHaveProperty('x-from-client-a');
+          expect(respHeaders).not.toHaveProperty('x-from-client-b');
+          expect(respHeaders).not.toHaveProperty('x-from-client-c');
+        },
+        /*expectedHeaders=*/ {},
+        {
+          headers: {
+            'x-from-client-a': 'hello from client',
+            'x-from-client-b': 'hello from client',
+            'x-from-client-c': 'hello from client',
+          },
+        }
+      );
+    },
+    { skipDeploy: true }
+  )
+);

packages/cli/test/fixtures/unit/commands/build/discontinued-nodejs12.x/.gitignore

@@ -0,0 +1,2 @@
+.vercel/builders
+.vercel/output

packages/cli/test/fixtures/unit/commands/build/discontinued-nodejs12.x/.vercel/project.json

@@ -0,0 +1,7 @@
+{
+  "orgId": ".",
+  "projectId": ".",
+  "settings": {
+    "framework": null
+  }
+}

packages/cli/test/fixtures/unit/commands/build/discontinued-nodejs12.x/api/index.php

@@ -0,0 +1 @@
+<?php echo 'This version of vercel-php uses the nodejs12.x Lambda Runtime'; ?>

packages/cli/test/fixtures/unit/commands/build/discontinued-nodejs12.x/vercel.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://openapi.vercel.sh/vercel.json",
+  "functions": {
+    "api/index.php": {
+      "runtime": "vercel-php@0.1.0"
+    }
+  }
+}

packages/cli/test/helpers/prepare.js

@@ -326,7 +326,7 @@ module.exports = async function prepare(session, binaryPath, tmpFixturesDir) {
       'vercel.json': JSON.stringify({
         functions: {
           'api/**/*.php': {
-            runtime: 'vercel-php@0.1.0',
+            runtime: 'vercel-php@0.5.2',
           },
         },
       }),

packages/cli/test/mocks/project.ts

@@ -1,37 +1,44 @@
 import { client } from './client';
-import { Project } from '../../src/types';
+import {
+  Project,
+  ProjectEnvTarget,
+  ProjectEnvType,
+  ProjectEnvVariable,
+} from '../../src/types';
 import { formatProvider } from '../../src/util/git/connect-git-provider';
+import { parseEnvironment } from '../../src/commands/pull';
+import { Env } from '@vercel/build-utils/dist';
 
-const envs = [
+const envs: ProjectEnvVariable[] = [
   {
-    type: 'encrypted',
+    type: ProjectEnvType.Encrypted,
     id: '781dt89g8r2h789g',
     key: 'REDIS_CONNECTION_STRING',
     value: 'redis://abc123@redis.example.com:6379',
-    target: ['production', 'preview'],
-    gitBranch: null,
+    target: [ProjectEnvTarget.Production, ProjectEnvTarget.Preview],
+    gitBranch: undefined,
     configurationId: null,
     updatedAt: 1557241361455,
     createdAt: 1557241361455,
   },
   {
-    type: 'encrypted',
+    type: ProjectEnvType.Encrypted,
     id: 'r124t6frtu25df16',
     key: 'SQL_CONNECTION_STRING',
     value: 'Server=sql.example.com;Database=app;Uid=root;Pwd=P455W0RD;',
-    target: ['production'],
-    gitBranch: null,
+    target: [ProjectEnvTarget.Production],
+    gitBranch: undefined,
     configurationId: null,
     updatedAt: 1557241361445,
     createdAt: 1557241361445,
   },
   {
-    type: 'encrypted',
+    type: ProjectEnvType.Encrypted,
     id: 'a235l6frtu25df32',
     key: 'SPECIAL_FLAG',
     value: '1',
-    target: ['development'],
-    gitBranch: null,
+    target: [ProjectEnvTarget.Development],
+    gitBranch: undefined,
     configurationId: null,
     updatedAt: 1557241361445,
     createdAt: 1557241361445,
@@ -206,6 +213,43 @@ export function useProject(project: Partial<Project> = defaultProject) {
     Object.assign(project, req.body);
     res.json(project);
   });
+  client.scenario.get(
+    `/v1/env/pull/${project.id}/:target?/:gitBranch?`,
+    (req, res) => {
+      const target: ProjectEnvTarget | undefined =
+        typeof req.params.target === 'string'
+          ? parseEnvironment(req.params.target)
+          : undefined;
+      let projectEnvs = envs;
+      if (target) {
+        projectEnvs = projectEnvs.filter(env => {
+          if (typeof env.target === 'string') {
+            return env.target === target;
+          }
+          if (Array.isArray(env.target)) {
+            return env.target.includes(target);
+          }
+          return false;
+        });
+      }
+      const allEnvs = Object.entries(
+        exposeSystemEnvs(
+          projectEnvs,
+          systemEnvs.map(env => env.key),
+          project.autoExposeSystemEnvs,
+          undefined,
+          target
+        )
+      );
+
+      const env: Record<string, string> = {};
+
+      allEnvs.forEach(([k, v]) => {
+        env[k] = v ?? '';
+      });
+      res.json({ env: env });
+    }
+  );
   client.scenario.get(
     `/v6/projects/${project.id}/system-env-values`,
     (_req, res) => {
@@ -222,15 +266,26 @@ export function useProject(project: Partial<Project> = defaultProject) {
       });
     }
   );
-  client.scenario.get(`/v8/projects/${project.id}/env`, (_req, res) => {
-    const target = _req.query.target;
-    if (typeof target === 'string') {
-      const targetEnvs = envs.filter(env => env.target.includes(target));
-      res.json({ envs: targetEnvs });
-      return;
+  client.scenario.get(`/v8/projects/${project.id}/env`, (req, res) => {
+    const target: ProjectEnvTarget | undefined =
+      typeof req.query.target === 'string'
+        ? parseEnvironment(req.query.target)
+        : undefined;
+
+    let targetEnvs = envs;
+    if (target) {
+      targetEnvs = targetEnvs.filter(env => {
+        if (typeof env.target === 'string') {
+          return env.target === target;
+        }
+        if (Array.isArray(env.target)) {
+          return env.target.includes(target);
+        }
+        return false;
+      });
     }
 
-    res.json({ envs });
+    res.json({ envs: targetEnvs });
   });
   client.scenario.post(`/v8/projects/${project.id}/env`, (req, res) => {
     const envObj = req.body;
@@ -310,3 +365,43 @@ export function useProject(project: Partial<Project> = defaultProject) {
 
   return { project, envs };
 }
+
+function getSystemEnvValue(
+  systemEnvRef: string,
+  { vercelUrl }: { vercelUrl?: string }
+) {
+  if (systemEnvRef === 'VERCEL_URL') {
+    return vercelUrl || '';
+  }
+
+  return '';
+}
+
+function exposeSystemEnvs(
+  projectEnvs: ProjectEnvVariable[],
+  systemEnvValues: string[],
+  autoExposeSystemEnvs: boolean | undefined,
+  vercelUrl?: string,
+  target?: ProjectEnvTarget
+) {
+  const envs: Env = {};
+
+  if (autoExposeSystemEnvs) {
+    envs['VERCEL'] = '1';
+    envs['VERCEL_ENV'] = target || 'development';
+
+    for (const key of systemEnvValues) {
+      envs[key] = getSystemEnvValue(key, { vercelUrl });
+    }
+  }
+
+  for (let env of projectEnvs) {
+    if (env.type === ProjectEnvType.System) {
+      envs[env.key] = getSystemEnvValue(env.value, { vercelUrl });
+    } else {
+      envs[env.key] = env.value;
+    }
+  }
+
+  return envs;
+}

packages/cli/test/unit/commands/build.test.ts

@@ -776,6 +776,55 @@ describe('build', () => {
     }
   });
 
+  it('should error when "functions" has runtime that emits discontinued "nodejs12.x"', async () => {
+    if (process.platform === 'win32') {
+      console.log('Skipping test on Windows');
+      return;
+    }
+    const cwd = fixture('discontinued-nodejs12.x');
+    const output = join(cwd, '.vercel/output');
+    try {
+      process.chdir(cwd);
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(1);
+
+      // Error gets printed to the terminal
+      await expect(client.stderr).toOutput(
+        'The Runtime "vercel-php@0.1.0" is using "nodejs12.x", which is discontinued. Please upgrade your Runtime to a more recent version or consult the author for more details.'
+      );
+
+      // `builds.json` contains "error" build
+      const builds = await fs.readJSON(join(output, 'builds.json'));
+      const errorBuilds = builds.builds.filter((b: any) => 'error' in b);
+      expect(errorBuilds).toHaveLength(1);
+      expect(errorBuilds[0].error).toEqual({
+        name: 'Error',
+        message: expect.stringContaining('Please upgrade your Runtime'),
+        stack: expect.stringContaining('Please upgrade your Runtime'),
+        hideStackTrace: true,
+        code: 'NODEJS_DISCONTINUED_VERSION',
+        link: 'https://github.com/vercel/vercel/blob/main/DEVELOPING_A_RUNTIME.md#lambdaruntime',
+      });
+
+      // top level "error" also contains the same error
+      expect(builds.error).toEqual({
+        name: 'Error',
+        message: expect.stringContaining('Please upgrade your Runtime'),
+        stack: expect.stringContaining('Please upgrade your Runtime'),
+        hideStackTrace: true,
+        code: 'NODEJS_DISCONTINUED_VERSION',
+        link: 'https://github.com/vercel/vercel/blob/main/DEVELOPING_A_RUNTIME.md#lambdaruntime',
+      });
+
+      // `config.json` contains `version`
+      const configJson = await fs.readJSON(join(output, 'config.json'));
+      expect(configJson.version).toBe(3);
+    } finally {
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
   it('should allow for missing "build" script', async () => {
     const cwd = fixture('static-with-pkg');
     const output = join(cwd, '.vercel/output');

packages/cli/test/unit/commands/deploy.test.ts

@@ -1,4 +1,7 @@
+import bytes from 'bytes';
+import fs from 'fs-extra';
 import { join } from 'path';
+import { randomBytes } from 'crypto';
 import { fileNameSymbol } from '@vercel/client';
 import { client } from '../../mocks/client';
 import deploy from '../../../src/commands/deploy';
@@ -199,4 +202,119 @@ describe('deploy', () => {
       process.chdir(originalCwd);
     }
   });
+
+  it('should upload missing files', async () => {
+    const cwd = setupFixture('commands/deploy/archive');
+    const originalCwd = process.cwd();
+
+    // Add random 1mb file
+    await fs.writeFile(join(cwd, 'data'), randomBytes(bytes('1mb')));
+
+    try {
+      process.chdir(cwd);
+
+      const user = useUser();
+      useTeams('team_dummy');
+      useProject({
+        ...defaultProject,
+        name: 'archive',
+        id: 'archive',
+      });
+
+      let body: any;
+      let fileUploaded = false;
+      client.scenario.post(`/v13/deployments`, (req, res) => {
+        if (fileUploaded) {
+          body = req.body;
+          res.json({
+            creator: {
+              uid: user.id,
+              username: user.username,
+            },
+            id: 'dpl_archive_test',
+          });
+        } else {
+          const sha = req.body.files[0].sha;
+          res.status(400).json({
+            error: {
+              code: 'missing_files',
+              message: 'Missing files',
+              missing: [sha],
+            },
+          });
+        }
+      });
+      client.scenario.post('/v2/files', (req, res) => {
+        // Wait for file to be finished uploading
+        req.on('data', () => {
+          // Noop
+        });
+        req.on('end', () => {
+          fileUploaded = true;
+          res.end();
+        });
+      });
+      client.scenario.get(`/v13/deployments/dpl_archive_test`, (req, res) => {
+        res.json({
+          creator: {
+            uid: user.id,
+            username: user.username,
+          },
+          id: 'dpl_archive_test',
+          readyState: 'READY',
+          aliasAssigned: true,
+          alias: [],
+        });
+      });
+      client.scenario.get(
+        `/v10/now/deployments/dpl_archive_test`,
+        (req, res) => {
+          res.json({
+            creator: {
+              uid: user.id,
+              username: user.username,
+            },
+            id: 'dpl_archive_test',
+            readyState: 'READY',
+            aliasAssigned: true,
+            alias: [],
+          });
+        }
+      );
+
+      // When stderr is not a TTY we expect 5 progress lines to be printed
+      client.stderr.isTTY = false;
+
+      client.setArgv('deploy', '--archive=tgz');
+      const uploadingLines: string[] = [];
+      client.stderr.on('data', data => {
+        if (data.startsWith('Uploading [')) {
+          uploadingLines.push(data);
+        }
+      });
+      client.stderr.resume();
+      const exitCode = await deploy(client);
+      expect(exitCode).toEqual(0);
+      expect(body?.files?.length).toEqual(1);
+      expect(body?.files?.[0].file).toEqual('.vercel/source.tgz');
+      expect(uploadingLines.length).toEqual(5);
+      expect(
+        uploadingLines[0].startsWith('Uploading [--------------------]')
+      ).toEqual(true);
+      expect(
+        uploadingLines[1].startsWith('Uploading [=====---------------]')
+      ).toEqual(true);
+      expect(
+        uploadingLines[2].startsWith('Uploading [==========----------]')
+      ).toEqual(true);
+      expect(
+        uploadingLines[3].startsWith('Uploading [===============-----]')
+      ).toEqual(true);
+      expect(
+        uploadingLines[4].startsWith('Uploading [====================]')
+      ).toEqual(true);
+    } finally {
+      process.chdir(originalCwd);
+    }
+  });
 });

packages/cli/test/unit/commands/list.test.ts

@@ -38,11 +38,11 @@ describe('list', () => {
 
       await list(client);
 
-      const output = await readOutputStream(client, 4);
+      const output = await readOutputStream(client, 6);
 
-      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[0]);
-      const header: string[] = parseSpacedTableRow(output.split('\n')[3]);
-      const data: string[] = parseSpacedTableRow(output.split('\n')[4]);
+      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[2]);
+      const header: string[] = parseSpacedTableRow(output.split('\n')[5]);
+      const data: string[] = parseSpacedTableRow(output.split('\n')[6]);
       data.shift();
 
       expect(org).toEqual(team[0].slug);
@@ -81,11 +81,11 @@ describe('list', () => {
       client.setArgv('-S', user.username);
       await list(client);
 
-      const output = await readOutputStream(client, 4);
+      const output = await readOutputStream(client, 6);
 
-      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[0]);
-      const header: string[] = parseSpacedTableRow(output.split('\n')[3]);
-      const data: string[] = parseSpacedTableRow(output.split('\n')[4]);
+      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[2]);
+      const header: string[] = parseSpacedTableRow(output.split('\n')[5]);
+      const data: string[] = parseSpacedTableRow(output.split('\n')[6]);
       data.shift();
 
       expect(org).toEqual(user.username);
@@ -116,11 +116,11 @@ describe('list', () => {
       client.setArgv(deployment.name);
       await list(client);
 
-      const output = await readOutputStream(client, 4);
+      const output = await readOutputStream(client, 6);
 
-      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[0]);
-      const header: string[] = parseSpacedTableRow(output.split('\n')[3]);
-      const data: string[] = parseSpacedTableRow(output.split('\n')[4]);
+      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[2]);
+      const header: string[] = parseSpacedTableRow(output.split('\n')[5]);
+      const data: string[] = parseSpacedTableRow(output.split('\n')[6]);
       data.shift();
 
       expect(org).toEqual(teamSlug || team[0].slug);

packages/cli/test/unit/commands/project.test.ts

@@ -22,10 +22,10 @@ describe('project', () => {
       client.setArgv('project', 'ls');
       await projects(client);
 
-      const output = await readOutputStream(client, 2);
-      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[0]);
-      const header: string[] = parseSpacedTableRow(output.split('\n')[2]);
-      const data: string[] = parseSpacedTableRow(output.split('\n')[3]);
+      const output = await readOutputStream(client, 3);
+      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[1]);
+      const header: string[] = parseSpacedTableRow(output.split('\n')[3]);
+      const data: string[] = parseSpacedTableRow(output.split('\n')[4]);
       data.pop();
 
       expect(org).toEqual(user.username);
@@ -47,10 +47,10 @@ describe('project', () => {
       client.setArgv('project', 'ls');
       await projects(client);
 
-      const output = await readOutputStream(client, 2);
-      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[0]);
-      const header: string[] = parseSpacedTableRow(output.split('\n')[2]);
-      const data: string[] = parseSpacedTableRow(output.split('\n')[3]);
+      const output = await readOutputStream(client, 3);
+      const { org } = pluckIdentifiersFromDeploymentList(output.split('\n')[1]);
+      const header: string[] = parseSpacedTableRow(output.split('\n')[3]);
+      const data: string[] = parseSpacedTableRow(output.split('\n')[4]);
       data.pop();
 
       expect(org).toEqual(user.username);

packages/cli/test/unit/util/dev/headers.test.ts

@@ -0,0 +1,77 @@
+import { Headers } from 'node-fetch';
+import { applyOverriddenHeaders } from '../../../../src/util/dev/headers';
+
+describe('applyOverriddenHeaders', () => {
+  it('do nothing if x-middleware-override-headers is not set', async () => {
+    const reqHeaders = { a: '1' };
+    const respHeaders = new Headers();
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ a: '1' });
+  });
+
+  it('adds a new header', async () => {
+    const reqHeaders = { a: '1' };
+    const respHeaders = new Headers({
+      // Define a new header 'b' and keep the existing header 'a'
+      'x-middleware-override-headers': 'a,b',
+      'x-middleware-request-a': '1',
+      'x-middleware-request-b': '2',
+    });
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ a: '1', b: '2' });
+  });
+
+  it('delete the header if x-middleware-request-* is undefined', async () => {
+    const reqHeaders = { a: '1', b: '2' };
+    const respHeaders = new Headers({
+      // Deletes a new header 'c' and keep the existing headers `a` and `b`
+      'x-middleware-override-headers': 'a,b,c',
+      'x-middleware-request-a': '1',
+      'x-middleware-request-b': '2',
+    });
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ a: '1', b: '2' });
+  });
+
+  it('updates an existing header', async () => {
+    const reqHeaders = { a: '1', b: '2' };
+    const respHeaders = new Headers({
+      // Modifies the header 'b' and keep the existing header 'a'
+      'x-middleware-override-headers': 'a,b',
+      'x-middleware-request-a': '1',
+      'x-middleware-request-b': 'modified',
+    });
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ a: '1', b: 'modified' });
+  });
+
+  it('ignores headers listed in NONOVERRIDABLE_HEADERS', async () => {
+    const reqHeaders = { a: '1', host: 'example.com' };
+    const respHeaders = new Headers({
+      // Define a new header 'b' and 'content-length'
+      'x-middleware-override-headers': 'a,b,content-length',
+      'x-middleware-request-a': '1',
+      'x-middleware-request-b': '2',
+      'x-middleware-request-content-length': '128',
+    });
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ a: '1', b: '2', host: 'example.com' });
+  });
+
+  it('deletes an existing header', async () => {
+    const reqHeaders = { a: '1', b: '2' };
+    const respHeaders = new Headers({
+      // Deletes the header 'a' and keep the existing header 'b'
+      'x-middleware-override-headers': 'b',
+      'x-middleware-request-b': '2',
+    });
+
+    applyOverriddenHeaders(reqHeaders, respHeaders);
+    expect(reqHeaders).toStrictEqual({ b: '2' });
+  });
+});

packages/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/client",
-  "version": "12.2.8",
+  "version": "12.2.14",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "homepage": "https://vercel.com",
@@ -43,8 +43,8 @@
     ]
   },
   "dependencies": {
-    "@vercel/build-utils": "5.5.1",
-    "@vercel/routing-utils": "2.0.2",
+    "@vercel/build-utils": "5.5.6",
+    "@vercel/routing-utils": "2.1.0",
     "@zeit/fetch": "5.2.0",
     "async-retry": "1.2.3",
     "async-sema": "3.0.0",

packages/client/src/upload.ts

@@ -1,4 +1,5 @@
-import { Agent } from 'https';
+import http from 'http';
+import https from 'https';
 import { Readable } from 'stream';
 import { EventEmitter } from 'events';
 import retry from 'async-retry';
@@ -78,7 +79,9 @@ export async function* upload(
   debug('Building an upload list...');
 
   const semaphore = new Sema(50, { capacity: 50 });
-  const agent = new Agent({ keepAlive: true });
+  const agent = apiUrl?.startsWith('https://')
+    ? new https.Agent({ keepAlive: true })
+    : new http.Agent({ keepAlive: true });
 
   shas.forEach((sha, index) => {
     const uploadProgress = uploads[index];

packages/edge/docs/README.md

@@ -6,6 +6,7 @@
 
 - [ExtraResponseInit](interfaces/ExtraResponseInit.md)
 - [Geo](interfaces/Geo.md)
+- [ModifiedRequest](interfaces/ModifiedRequest.md)
 
 ### Variables
 
@@ -15,6 +16,7 @@
 - [LATITUDE_HEADER_NAME](README.md#latitude_header_name)
 - [LONGITUDE_HEADER_NAME](README.md#longitude_header_name)
 - [REGION_HEADER_NAME](README.md#region_header_name)
+- [REQUEST_ID_HEADER_NAME](README.md#request_id_header_name)
 
 ### Functions
 
@@ -89,11 +91,25 @@ Longitude of the original client IP as calculated by Vercel Proxy.
 
 • `Const` **REGION_HEADER_NAME**: `"x-vercel-ip-country-region"`
 
-Region of the original client IP as calculated by Vercel Proxy.
+Country region of the original client IP calculated by Vercel Proxy.
+
+See [docs](https://vercel.com/docs/concepts/edge-network/headers#x-vercel-ip-country-region).
 
 #### Defined in
 
-[src/edge-headers.ts:24](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L24)
+[src/edge-headers.ts:26](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L26)
+
+---
+
+### REQUEST_ID_HEADER_NAME
+
+• `Const` **REQUEST_ID_HEADER_NAME**: `"x-vercel-id"`
+
+The request ID for each request generated by Vercel Proxy.
+
+#### Defined in
+
+[src/edge-headers.ts:30](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L30)
 
 ## Functions
 
@@ -123,7 +139,7 @@ Returns the location information for the incoming request.
 
 #### Defined in
 
-[src/edge-headers.ts:80](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L80)
+[src/edge-headers.ts:106](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L106)
 
 ---
 
@@ -149,7 +165,7 @@ Returns the IP address of the request from the headers.
 
 #### Defined in
 
-[src/edge-headers.ts:66](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L66)
+[src/edge-headers.ts:77](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L77)
 
 ---
 
@@ -197,7 +213,7 @@ export default function middleware(_req: Request) {
 
 #### Defined in
 
-[src/middleware-helpers.ts:94](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L94)
+[src/middleware-helpers.ts:145](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L145)
 
 ---
 
@@ -259,4 +275,4 @@ export const config = { matcher: '/api/users/:path*' };
 
 #### Defined in
 
-[src/middleware-helpers.ts:53](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L53)
+[src/middleware-helpers.ts:101](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L101)

packages/edge/docs/interfaces/ExtraResponseInit.md

@@ -11,6 +11,7 @@
 ### Properties
 
 - [headers](ExtraResponseInit.md#headers)
+- [request](ExtraResponseInit.md#request)
 - [status](ExtraResponseInit.md#status)
 - [statusText](ExtraResponseInit.md#statustext)
 
@@ -25,7 +26,19 @@ along with the response headers from the origin.
 
 #### Defined in
 
-[src/middleware-helpers.ts:6](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L6)
+[src/middleware-helpers.ts:31](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L31)
+
+---
+
+### request
+
+• `Optional` **request**: [`ModifiedRequest`](ModifiedRequest.md)
+
+Fields to rewrite for the upstream request.
+
+#### Defined in
+
+[src/middleware-helpers.ts:35](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L35)
 
 ---
 

packages/edge/docs/interfaces/Geo.md

@@ -8,6 +8,7 @@ The location information of a given request.
 
 - [city](Geo.md#city)
 - [country](Geo.md#country)
+- [countryRegion](Geo.md#countryregion)
 - [latitude](Geo.md#latitude)
 - [longitude](Geo.md#longitude)
 - [region](Geo.md#region)
@@ -22,7 +23,7 @@ The city that the request originated from.
 
 #### Defined in
 
-[src/edge-headers.ts:41](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L41)
+[src/edge-headers.ts:47](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L47)
 
 ---
 
@@ -34,7 +35,20 @@ The country that the request originated from.
 
 #### Defined in
 
-[src/edge-headers.ts:44](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L44)
+[src/edge-headers.ts:50](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L50)
+
+---
+
+### countryRegion
+
+• `Optional` **countryRegion**: `string`
+
+The region part of the ISO 3166-2 code of the client IP.
+See [docs](https://vercel.com/docs/concepts/edge-network/headers#x-vercel-ip-country-region).
+
+#### Defined in
+
+[src/edge-headers.ts:58](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L58)
 
 ---
 
@@ -46,7 +60,7 @@ The latitude of the client.
 
 #### Defined in
 
-[src/edge-headers.ts:50](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L50)
+[src/edge-headers.ts:61](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L61)
 
 ---
 
@@ -58,7 +72,7 @@ The longitude of the client.
 
 #### Defined in
 
-[src/edge-headers.ts:53](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L53)
+[src/edge-headers.ts:64](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L64)
 
 ---
 
@@ -70,4 +84,4 @@ The [Vercel Edge Network region](https://vercel.com/docs/concepts/edge-network/r
 
 #### Defined in
 
-[src/edge-headers.ts:47](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L47)
+[src/edge-headers.ts:53](https://github.com/vercel/vercel/blob/main/packages/edge/src/edge-headers.ts#L53)

packages/edge/docs/interfaces/ModifiedRequest.md

@@ -0,0 +1,38 @@
+# Interface: ModifiedRequest
+
+## Table of contents
+
+### Properties
+
+- [headers](ModifiedRequest.md#headers)
+
+## Properties
+
+### headers
+
+• `Optional` **headers**: `Headers`
+
+If set, overwrites the incoming headers to the origin request.
+
+This is useful when you want to pass data between a Middleware and a
+Serverless or Edge Function.
+
+**`Example`**
+
+<caption>Add a `x-user-id` header and remove the `Authorization` header</caption>
+
+```ts
+import { rewrite } from '@vercel/edge';
+export default async function middleware(request: Request): Promise<Response> {
+  const newHeaders = new Headers(request.headers);
+  newHeaders.set('x-user-id', 'user_123');
+  newHeaders.delete('authorization');
+  return rewrite(request.url, {
+    request: { headers: newHeaders },
+  });
+}
+```
+
+#### Defined in
+
+[src/middleware-helpers.ts:23](https://github.com/vercel/vercel/blob/main/packages/edge/src/middleware-helpers.ts#L23)

packages/edge/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/edge",
-  "version": "0.0.4",
+  "version": "0.1.0",
   "license": "MIT",
   "main": "dist/index.js",
   "module": "dist/index.mjs",
@@ -12,7 +12,7 @@
     "build:docs": "typedoc && prettier --write docs/**/*.md docs/*.md"
   },
   "devDependencies": {
-    "@edge-runtime/jest-environment": "1.1.0-beta.7",
+    "@edge-runtime/jest-environment": "2.0.0",
     "@types/jest": "27.4.1",
     "ts-node": "8.9.1",
     "tsup": "6.1.2",

packages/edge/src/edge-headers.ts

@@ -19,9 +19,15 @@ export const LATITUDE_HEADER_NAME = 'x-vercel-ip-latitude';
  */
 export const LONGITUDE_HEADER_NAME = 'x-vercel-ip-longitude';
 /**
- * Region of the original client IP as calculated by Vercel Proxy.
+ * Country region of the original client IP calculated by Vercel Proxy.
+ *
+ * See [docs](https://vercel.com/docs/concepts/edge-network/headers#x-vercel-ip-country-region).
  */
 export const REGION_HEADER_NAME = 'x-vercel-ip-country-region';
+/**
+ * The request ID for each request generated by Vercel Proxy.
+ */
+export const REQUEST_ID_HEADER_NAME = 'x-vercel-id';
 
 /**
  * We define a new type so this function can be reused with
@@ -46,6 +52,11 @@ export interface Geo {
   /** The [Vercel Edge Network region](https://vercel.com/docs/concepts/edge-network/regions) that received the request. */
   region?: string;
 
+  /** The region part of the ISO 3166-2 code of the client IP.
+   * See [docs](https://vercel.com/docs/concepts/edge-network/headers#x-vercel-ip-country-region).
+   */
+  countryRegion?: string;
+
   /** The latitude of the client. */
   latitude?: string;
 
@@ -67,6 +78,21 @@ export function ipAddress(request: Request): string | undefined {
   return getHeader(request, IP_HEADER_NAME);
 }
 
+/**
+ * Extracts the Vercel Edge Network region name from the request ID.
+ *
+ * @param requestId The request ID (`x-vercel-id`).
+ * @returns The first region received the client request.
+ */
+function getRegionFromRequestId(requestId?: string): string | undefined {
+  if (!requestId) {
+    return 'dev1';
+  }
+
+  // The request ID is in the format of `region::id` or `region1:region2:...::id`.
+  return requestId.split(':')[0];
+}
+
 /**
  * Returns the location information for the incoming request.
  *
@@ -81,7 +107,8 @@ export function geolocation(request: Request): Geo {
   return {
     city: getHeader(request, CITY_HEADER_NAME),
     country: getHeader(request, COUNTRY_HEADER_NAME),
-    region: getHeader(request, REGION_HEADER_NAME),
+    countryRegion: getHeader(request, REGION_HEADER_NAME),
+    region: getRegionFromRequestId(getHeader(request, REQUEST_ID_HEADER_NAME)),
     latitude: getHeader(request, LATITUDE_HEADER_NAME),
     longitude: getHeader(request, LONGITUDE_HEADER_NAME),
   };

packages/edge/src/middleware-helpers.ts

@@ -1,9 +1,57 @@
+export interface ModifiedRequest {
+  /**
+   * If set, overwrites the incoming headers to the origin request.
+   *
+   * This is useful when you want to pass data between a Middleware and a
+   * Serverless or Edge Function.
+   *
+   * @example
+   * <caption>Add a `x-user-id` header and remove the `Authorization` header</caption>
+   *
+   * ```ts
+   * import { rewrite } from '@vercel/edge';
+   * export default async function middleware(request: Request): Promise<Response> {
+   *   const newHeaders = new Headers(request.headers);
+   *   newHeaders.set('x-user-id', 'user_123');
+   *   newHeaders.delete('authorization');
+   *   return rewrite(request.url, {
+   *     request: { headers: newHeaders }
+   *   })
+   * }
+   * ```
+   */
+  headers?: Headers;
+}
+
 export interface ExtraResponseInit extends Omit<ResponseInit, 'headers'> {
   /**
    * These headers will be sent to the user response
    * along with the response headers from the origin.
    */
   headers?: HeadersInit;
+  /**
+   * Fields to rewrite for the upstream request.
+   */
+  request?: ModifiedRequest;
+}
+
+function handleMiddlewareField(
+  init: ExtraResponseInit | undefined,
+  headers: Headers
+) {
+  if (init?.request?.headers) {
+    if (!(init.request.headers instanceof Headers)) {
+      throw new Error('request.headers must be an instance of Headers');
+    }
+
+    const keys = [];
+    for (const [key, value] of init.request.headers) {
+      headers.set('x-middleware-request-' + key, value);
+      keys.push(key);
+    }
+
+    headers.set('x-middleware-override-headers', keys.join(','));
+  }
 }
 
 /**
@@ -56,6 +104,9 @@ export function rewrite(
 ): Response {
   const headers = new Headers(init?.headers ?? {});
   headers.set('x-middleware-rewrite', String(destination));
+
+  handleMiddlewareField(init, headers);
+
   return new Response(null, {
     ...init,
     headers,
@@ -94,6 +145,9 @@ export function rewrite(
 export function next(init?: ExtraResponseInit): Response {
   const headers = new Headers(init?.headers ?? {});
   headers.set('x-middleware-next', '1');
+
+  handleMiddlewareField(init, headers);
+
   return new Response(null, {
     ...init,
     headers,