Publish Stable

- @vercel/build-utils@4.1.0
 - vercel@25.1.0
 - @vercel/client@12.0.1
 - @vercel/go@2.0.1
 - @vercel/next@3.0.1
 - @vercel/node@2.1.0
 - @vercel/python@3.0.1
 - @vercel/redwood@1.0.1
 - @vercel/remix@1.0.1
 - @vercel/ruby@1.3.9
 - @vercel/static-build@1.0.1
 - @vercel/static-config@2.0.1

api/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "esnext",
+    "target": "ES2020",
     "skipLibCheck": true,
     "strict": false,
     "forceConsistentCasingInFileNames": true,

examples/remix/package.json

@@ -22,8 +22,5 @@
     "@types/react-dom": "^17.0.9",
     "typescript": "^4.1.2"
   },
-  "engines": {
-    "node": "14.x"
-  },
   "sideEffects": false
 }

examples/remix/vercel.json

@@ -1,7 +0,0 @@
-{
-  "build": {
-    "env": {
-      "ENABLE_FILE_SYSTEM_API": "1"
-    }
-  }
-}

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "3.1.1",
+  "version": "4.1.0",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",
@@ -23,7 +23,7 @@
     "@types/cross-spawn": "6.0.0",
     "@types/end-of-stream": "^1.4.0",
     "@types/fs-extra": "9.0.13",
-    "@types/glob": "^7.1.1",
+    "@types/glob": "7.2.0",
     "@types/jest": "27.4.1",
     "@types/js-yaml": "3.12.1",
     "@types/ms": "0.7.31",
@@ -31,7 +31,7 @@
     "@types/node-fetch": "^2.1.6",
     "@types/semver": "6.0.0",
     "@types/yazl": "2.4.2",
-    "@vercel/frameworks": "1.0.0",
+    "@vercel/frameworks": "1.0.1",
     "@vercel/ncc": "0.24.0",
     "aggregate-error": "3.0.1",
     "async-retry": "1.2.3",
@@ -40,7 +40,7 @@
     "cross-spawn": "6.0.5",
     "end-of-stream": "1.4.1",
     "fs-extra": "10.0.0",
-    "glob": "7.1.3",
+    "glob": "8.0.3",
     "into-stream": "5.0.0",
     "js-yaml": "3.13.1",
     "minimatch": "3.0.4",

packages/build-utils/src/fs/get-glob-fs.ts

@@ -0,0 +1,85 @@
+import fs from 'fs';
+import { DetectorFilesystem } from '../detectors/filesystem';
+
+type GlobFs = typeof fs;
+
+function normalizePath(path: string) {
+  // on windows, this will return a path like
+  // D:/c/package.json
+  // since we abstract the filesystem, we need to remove windows specific info from the path
+  // and let the FS decide how to process the path
+  // D:/c/package.json => /c/package.json
+  return path.replace(/^[a-zA-Z]:/, '');
+}
+
+export function getGlobFs(_fs: DetectorFilesystem): GlobFs {
+  const readdir = (
+    path: fs.PathLike,
+    callback: (err: NodeJS.ErrnoException | null, files: string[]) => void
+  ): void => {
+    _fs
+      .readdir(normalizePath(String(path)))
+      .then(stats =>
+        callback(
+          null,
+          stats.map(stat => stat.name)
+        )
+      )
+      .catch(err => callback(err, []));
+  };
+
+  const stat = (
+    path: fs.PathLike,
+    callback: (
+      err: NodeJS.ErrnoException | null,
+      stats: fs.Stats | null
+    ) => void
+  ): void => {
+    _fs
+      .isFile(normalizePath(String(path)))
+      .then(isPathAFile => {
+        callback(null, {
+          ino: 0,
+          mode: 0,
+          nlink: 0,
+          uid: 0,
+          gid: 0,
+          rdev: 0,
+          size: 0,
+          blksize: 0,
+          blocks: 0,
+          atimeMs: 0,
+          mtimeMs: 0,
+          ctimeMs: 0,
+          birthtimeMs: 0,
+          atime: new Date(),
+          mtime: new Date(),
+          ctime: new Date(),
+          birthtime: new Date(),
+          dev: 0,
+          isBlockDevice: () => false,
+          isCharacterDevice: () => false,
+          isDirectory: () => !isPathAFile,
+          isFIFO: () => false,
+          isFile: () => isPathAFile,
+          isSocket: () => false,
+          isSymbolicLink: () => false,
+        });
+      })
+      .catch(err => callback(err, null));
+  };
+
+  return new Proxy(fs, {
+    get(_target, prop) {
+      switch (prop) {
+        case 'readdir':
+          return readdir;
+        case 'lstat':
+        case 'stat':
+          return stat;
+        default:
+          throw new Error('Not Implemented');
+      }
+    },
+  });
+}

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

@@ -3,6 +3,7 @@ import fs from 'fs-extra';
 import path from 'path';
 import Sema from 'async-sema';
 import spawn from 'cross-spawn';
+import { coerce, intersects, validRange } from 'semver';
 import { SpawnOptions } from 'child_process';
 import { deprecate } from 'util';
 import debug from '../debug';
@@ -219,9 +220,9 @@ export async function getNodeVersion(
   config: Config = {},
   meta: Meta = {}
 ): Promise<NodeVersion> {
+  const latest = getLatestNodeVersion();
   if (meta && meta.isDev) {
     // Use the system-installed version of `node` in PATH for `vercel dev`
-    const latest = getLatestNodeVersion();
     return { ...latest, runtime: 'nodejs' };
   }
   const { packageJson } = await scanParentDirs(destPath, true);
@@ -229,10 +230,27 @@ export async function getNodeVersion(
   let isAuto = true;
   if (packageJson && packageJson.engines && packageJson.engines.node) {
     const { node } = packageJson.engines;
-    if (nodeVersion && nodeVersion !== node && !meta.isDev) {
+    if (
+      nodeVersion &&
+      validRange(node) &&
+      !intersects(nodeVersion, node) &&
+      !meta.isDev
+    ) {
       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) {
+      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
+    ) {
+      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`
+      );
     }
     nodeVersion = node;
     isAuto = false;

packages/build-utils/src/index.ts

@@ -117,5 +117,14 @@ export const isStaticRuntime = (name?: string): boolean => {
 };
 
 export { workspaceManagers } from './workspaces/workspace-managers';
-export { getWorkspaces } from './workspaces/get-workspaces';
+export {
+  getWorkspaces,
+  GetWorkspaceOptions,
+  Workspace,
+  WorkspaceType,
+} from './workspaces/get-workspaces';
+export {
+  getWorkspacePackagePaths,
+  GetWorkspacePackagePathsOptions,
+} from './workspaces/get-workspace-package-paths';
 export { monorepoManagers } from './monorepos/monorepo-managers';

packages/build-utils/src/types.ts

@@ -82,7 +82,7 @@ export interface BuildOptions {
    * is the Git Repository Root. This is only relevant for Monorepos.
    * See https://vercel.com/blog/monorepos
    */
-  repoRootPath?: string;
+  repoRootPath: string;
 
   /**
    * An arbitrary object passed by the user in the build definition defined
@@ -123,7 +123,7 @@ export interface PrepareCacheOptions {
    * is the Git Repository Root. This is only relevant for Monorepos.
    * See https://vercel.com/blog/monorepos
    */
-  repoRootPath?: string;
+  repoRootPath: string;
 
   /**
    * An arbitrary object passed by the user in the build definition defined
@@ -295,6 +295,7 @@ export interface PackageJson {
   readonly preferGlobal?: boolean;
   readonly private?: boolean;
   readonly publishConfig?: PackageJson.PublishConfig;
+  readonly packageManager?: string;
 }
 
 export interface NodeVersion {
@@ -427,7 +428,7 @@ export interface BuildResultV2Typical {
 export type BuildResultV2 = BuildResultV2Typical | BuildResultBuildOutput;
 
 export interface BuildResultV3 {
-  output: Lambda;
+  output: Lambda | EdgeFunction;
 }
 
 export type BuildV2 = (options: BuildOptions) => Promise<BuildResultV2>;

packages/build-utils/src/workspaces/get-workspace-package-paths.ts

@@ -0,0 +1,113 @@
+import _path from 'path';
+import yaml from 'js-yaml';
+import glob from 'glob';
+import { DetectorFilesystem } from '../detectors/filesystem';
+import { Workspace } from './get-workspaces';
+import { getGlobFs } from '../fs/get-glob-fs';
+import { normalizePath } from '../fs/normalize-path';
+
+const posixPath = _path.posix;
+
+interface GetPackagePathOptions {
+  fs: DetectorFilesystem;
+}
+
+export interface GetWorkspacePackagePathsOptions extends GetPackagePathOptions {
+  fs: DetectorFilesystem;
+  workspace: Workspace;
+}
+
+export async function getWorkspacePackagePaths({
+  fs,
+  workspace,
+}: GetWorkspacePackagePathsOptions): Promise<string[]> {
+  const { type, rootPath } = workspace;
+  const workspaceFs = fs.chdir(rootPath);
+
+  let results: string[] = [];
+
+  switch (type) {
+    case 'yarn':
+    case 'npm':
+      results = await getPackageJsonWorkspacePackagePaths({ fs: workspaceFs });
+      break;
+    case 'pnpm':
+      results = await getPnpmWorkspacePackagePaths({ fs: workspaceFs });
+      break;
+    default:
+      throw new Error(`Unknown workspace implementation: ${type}`);
+  }
+
+  return results.map(packagePath => {
+    return posixPath.join(rootPath, posixPath.dirname(packagePath));
+  });
+}
+
+type PackageJsonWithWorkspace = {
+  workspaces?:
+    | {
+        packages?: string[];
+        noHoist?: string[];
+      }
+    | string[];
+};
+
+type PnpmWorkspaces = {
+  packages?: string[];
+};
+
+async function getPackagePaths(
+  packages: string[],
+  fs: DetectorFilesystem
+): Promise<string[]> {
+  return (
+    await Promise.all(
+      packages.map(
+        packageGlob =>
+          new Promise<string[]>((resolve, reject) => {
+            glob(
+              normalizePath(posixPath.join(packageGlob, 'package.json')),
+              {
+                cwd: '/',
+                fs: getGlobFs(fs),
+              },
+              (err, matches) => {
+                if (err) reject(err);
+                else resolve(matches);
+              }
+            );
+          })
+      )
+    )
+  ).flat();
+}
+
+async function getPackageJsonWorkspacePackagePaths({
+  fs,
+}: GetPackagePathOptions): Promise<string[]> {
+  const packageJsonAsBuffer = await fs.readFile('package.json');
+  const { workspaces } = JSON.parse(
+    packageJsonAsBuffer.toString()
+  ) as PackageJsonWithWorkspace;
+
+  let packages: string[] = [];
+
+  if (Array.isArray(workspaces)) {
+    packages = workspaces;
+  } else {
+    packages = workspaces?.packages ?? [];
+  }
+
+  return getPackagePaths(packages, fs);
+}
+
+async function getPnpmWorkspacePackagePaths({
+  fs,
+}: GetPackagePathOptions): Promise<string[]> {
+  const pnpmWorkspaceAsBuffer = await fs.readFile('pnpm-workspace.yaml');
+  const { packages = [] } = yaml.load(
+    pnpmWorkspaceAsBuffer.toString()
+  ) as PnpmWorkspaces;
+
+  return getPackagePaths(packages, fs);
+}

packages/build-utils/src/workspaces/get-workspaces.ts

@@ -36,7 +36,7 @@ export async function getWorkspaces({
     const childDirectories = directoryContents.filter(
       stat => stat.type === 'dir'
     );
-
+    
     return (
       await Promise.all(
         childDirectories.map(childDirectory =>

packages/build-utils/test/fixtures/25-multiple-lock-files-yarn/a/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "a",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "debug": "^4.3.2"
+  }
+}

packages/build-utils/test/fixtures/25-multiple-lock-files-yarn/b/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "b",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cowsay": "^1.5.0"
+  }
+}

packages/build-utils/test/fixtures/26-multiple-lock-files-pnpm/a/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "a",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "debug": "^4.3.2"
+  }
+}

packages/build-utils/test/fixtures/26-multiple-lock-files-pnpm/b/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "b",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "cowsay": "^1.5.0"
+  }
+}

packages/build-utils/test/fixtures/26-multiple-lock-files-pnpm/pnpm-lock.yaml

@@ -1,19 +1,260 @@
-lockfileVersion: 5.3
+lockfileVersion: 5.4
 
-specifiers:
-  once: ^1.4.0
+importers:
 
-dependencies:
-  once: 1.4.0
+  .:
+    specifiers:
+      once: ^1.4.0
+    dependencies:
+      once: 1.4.0
+
+  a:
+    specifiers:
+      debug: ^4.3.2
+    dependencies:
+      debug: 4.3.4
+
+  b:
+    specifiers:
+      cowsay: ^1.5.0
+    dependencies:
+      cowsay: 1.5.0
 
 packages:
 
+  /ansi-regex/3.0.1:
+    resolution: {integrity: sha512-+O9Jct8wf++lXxxFc4hc8LsjaSq0HFzzL7cVsw8pRDIPdjKD2mT4ytDZlLuSBZ4cLKZFXIrMGO7DbQCtMJJMKw==}
+    engines: {node: '>=4'}
+    dev: false
+
+  /ansi-regex/5.0.1:
+    resolution: {integrity: sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==}
+    engines: {node: '>=8'}
+    dev: false
+
+  /ansi-styles/4.3.0:
+    resolution: {integrity: sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==}
+    engines: {node: '>=8'}
+    dependencies:
+      color-convert: 2.0.1
+    dev: false
+
+  /camelcase/5.3.1:
+    resolution: {integrity: sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==}
+    engines: {node: '>=6'}
+    dev: false
+
+  /cliui/6.0.0:
+    resolution: {integrity: sha512-t6wbgtoCXvAzst7QgXxJYqPt0usEfbgQdftEPbLL/cvv6HPE5VgvqCuAIDR0NgU52ds6rFwqrgakNLrHEjCbrQ==}
+    dependencies:
+      string-width: 4.2.3
+      strip-ansi: 6.0.1
+      wrap-ansi: 6.2.0
+    dev: false
+
+  /color-convert/2.0.1:
+    resolution: {integrity: sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==}
+    engines: {node: '>=7.0.0'}
+    dependencies:
+      color-name: 1.1.4
+    dev: false
+
+  /color-name/1.1.4:
+    resolution: {integrity: sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==}
+    dev: false
+
+  /cowsay/1.5.0:
+    resolution: {integrity: sha512-8Ipzr54Z8zROr/62C8f0PdhQcDusS05gKTS87xxdji8VbWefWly0k8BwGK7+VqamOrkv3eGsCkPtvlHzrhWsCA==}
+    engines: {node: '>= 4'}
+    hasBin: true
+    dependencies:
+      get-stdin: 8.0.0
+      string-width: 2.1.1
+      strip-final-newline: 2.0.0
+      yargs: 15.4.1
+    dev: false
+
+  /debug/4.3.4:
+    resolution: {integrity: sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==}
+    engines: {node: '>=6.0'}
+    peerDependencies:
+      supports-color: '*'
+    peerDependenciesMeta:
+      supports-color:
+        optional: true
+    dependencies:
+      ms: 2.1.2
+    dev: false
+
+  /decamelize/1.2.0:
+    resolution: {integrity: sha512-z2S+W9X73hAUUki+N+9Za2lBlun89zigOyGrsax+KUQ6wKW4ZoWpEYBkGhQjwAjjDCkWxhY0VKEhk8wzY7F5cA==}
+    engines: {node: '>=0.10.0'}
+    dev: false
+
+  /emoji-regex/8.0.0:
+    resolution: {integrity: sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==}
+    dev: false
+
+  /find-up/4.1.0:
+    resolution: {integrity: sha512-PpOwAdQ/YlXQ2vj8a3h8IipDuYRi3wceVQQGYWxNINccq40Anw7BlsEXCMbt1Zt+OLA6Fq9suIpIWD0OsnISlw==}
+    engines: {node: '>=8'}
+    dependencies:
+      locate-path: 5.0.0
+      path-exists: 4.0.0
+    dev: false
+
+  /get-caller-file/2.0.5:
+    resolution: {integrity: sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==}
+    engines: {node: 6.* || 8.* || >= 10.*}
+    dev: false
+
+  /get-stdin/8.0.0:
+    resolution: {integrity: sha512-sY22aA6xchAzprjyqmSEQv4UbAAzRN0L2dQB0NlN5acTTK9Don6nhoc3eAbUnpZiCANAMfd/+40kVdKfFygohg==}
+    engines: {node: '>=10'}
+    dev: false
+
+  /is-fullwidth-code-point/2.0.0:
+    resolution: {integrity: sha512-VHskAKYM8RfSFXwee5t5cbN5PZeq1Wrh6qd5bkyiXIf6UQcN6w/A0eXM9r6t8d+GYOh+o6ZhiEnb88LN/Y8m2w==}
+    engines: {node: '>=4'}
+    dev: false
+
+  /is-fullwidth-code-point/3.0.0:
+    resolution: {integrity: sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==}
+    engines: {node: '>=8'}
+    dev: false
+
+  /locate-path/5.0.0:
+    resolution: {integrity: sha512-t7hw9pI+WvuwNJXwk5zVHpyhIqzg2qTlklJOf0mVxGSbe3Fp2VieZcduNYjaLDoy6p9uGpQEGWG87WpMKlNq8g==}
+    engines: {node: '>=8'}
+    dependencies:
+      p-locate: 4.1.0
+    dev: false
+
+  /ms/2.1.2:
+    resolution: {integrity: sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==}
+    dev: false
+
   /once/1.4.0:
     resolution: {integrity: sha1-WDsap3WWHUsROsF9nFC6753Xa9E=}
     dependencies:
       wrappy: 1.0.2
     dev: false
 
+  /p-limit/2.3.0:
+    resolution: {integrity: sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==}
+    engines: {node: '>=6'}
+    dependencies:
+      p-try: 2.2.0
+    dev: false
+
+  /p-locate/4.1.0:
+    resolution: {integrity: sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==}
+    engines: {node: '>=8'}
+    dependencies:
+      p-limit: 2.3.0
+    dev: false
+
+  /p-try/2.2.0:
+    resolution: {integrity: sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==}
+    engines: {node: '>=6'}
+    dev: false
+
+  /path-exists/4.0.0:
+    resolution: {integrity: sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==}
+    engines: {node: '>=8'}
+    dev: false
+
+  /require-directory/2.1.1:
+    resolution: {integrity: sha1-jGStX9MNqxyXbiNE/+f3kqam30I=}
+    engines: {node: '>=0.10.0'}
+    dev: false
+
+  /require-main-filename/2.0.0:
+    resolution: {integrity: sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==}
+    dev: false
+
+  /set-blocking/2.0.0:
+    resolution: {integrity: sha1-BF+XgtARrppoA93TgrJDkrPYkPc=}
+    dev: false
+
+  /string-width/2.1.1:
+    resolution: {integrity: sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==}
+    engines: {node: '>=4'}
+    dependencies:
+      is-fullwidth-code-point: 2.0.0
+      strip-ansi: 4.0.0
+    dev: false
+
+  /string-width/4.2.3:
+    resolution: {integrity: sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==}
+    engines: {node: '>=8'}
+    dependencies:
+      emoji-regex: 8.0.0
+      is-fullwidth-code-point: 3.0.0
+      strip-ansi: 6.0.1
+    dev: false
+
+  /strip-ansi/4.0.0:
+    resolution: {integrity: sha1-qEeQIusaw2iocTibY1JixQXuNo8=}
+    engines: {node: '>=4'}
+    dependencies:
+      ansi-regex: 3.0.1
+    dev: false
+
+  /strip-ansi/6.0.1:
+    resolution: {integrity: sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==}
+    engines: {node: '>=8'}
+    dependencies:
+      ansi-regex: 5.0.1
+    dev: false
+
+  /strip-final-newline/2.0.0:
+    resolution: {integrity: sha512-BrpvfNAE3dcvq7ll3xVumzjKjZQ5tI1sEUIKr3Uoks0XUl45St3FlatVqef9prk4jRDzhW6WZg+3bk93y6pLjA==}
+    engines: {node: '>=6'}
+    dev: false
+
+  /which-module/2.0.0:
+    resolution: {integrity: sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=}
+    dev: false
+
+  /wrap-ansi/6.2.0:
+    resolution: {integrity: sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==}
+    engines: {node: '>=8'}
+    dependencies:
+      ansi-styles: 4.3.0
+      string-width: 4.2.3
+      strip-ansi: 6.0.1
+    dev: false
+
   /wrappy/1.0.2:
     resolution: {integrity: sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=}
     dev: false
+
+  /y18n/4.0.3:
+    resolution: {integrity: sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==}
+    dev: false
+
+  /yargs-parser/18.1.3:
+    resolution: {integrity: sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==}
+    engines: {node: '>=6'}
+    dependencies:
+      camelcase: 5.3.1
+      decamelize: 1.2.0
+    dev: false
+
+  /yargs/15.4.1:
+    resolution: {integrity: sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==}
+    engines: {node: '>=8'}
+    dependencies:
+      cliui: 6.0.0
+      decamelize: 1.2.0
+      find-up: 4.1.0
+      get-caller-file: 2.0.5
+      require-directory: 2.1.1
+      require-main-filename: 2.0.0
+      set-blocking: 2.0.0
+      string-width: 4.2.3
+      which-module: 2.0.0
+      y18n: 4.0.3
+      yargs-parser: 18.1.3
+    dev: false

packages/build-utils/test/pkg-engine-node-exact/package.json

@@ -0,0 +1,6 @@
+{
+  "private": true,
+  "engines": {
+    "node": "16.14.0"
+  }
+}

packages/build-utils/test/pkg-engine-node-greaterthan/package.json

@@ -0,0 +1,6 @@
+{
+  "private": true,
+  "engines": {
+    "node": ">=16"
+  }
+}

packages/build-utils/test/unit.get-workspaces-package-paths.test.ts

@@ -0,0 +1,38 @@
+import path from 'path';
+import { getWorkspaces } from '../src/workspaces/get-workspaces';
+import { getWorkspacePackagePaths } from '../src/workspaces/get-workspace-package-paths';
+import { FixtureFilesystem } from './utils/fixture-filesystem';
+
+describe.each<[string, string[]]>([
+  ['21-npm-workspaces', ['/a', '/b']],
+  ['23-pnpm-workspaces', ['/c', '/d']],
+  ['27-yarn-workspaces', ['/a', '/b']],
+  ['25-multiple-lock-files-yarn', ['/a', '/b']],
+  ['26-multiple-lock-files-pnpm', ['/a', '/b']],
+  [
+    '29-nested-workspaces',
+    ['/backend/c', '/backend/d', '/frontend/a', '/frontend/b'],
+  ],
+  ['22-pnpm', []],
+])('`getWorkspacesPackagePaths()`', (fixturePath, packagePaths) => {
+  const testName =
+    packagePaths.length > 0
+      ? `should detect ${packagePaths.join()} package${
+          packagePaths.length > 1 ? 's' : ''
+        } for ${fixturePath}`
+      : `should not detect any workspace for ${fixturePath}`;
+
+  it(testName, async () => {
+    const fixture = path.join(__dirname, 'fixtures', fixturePath);
+    const fs = new FixtureFilesystem(fixture);
+
+    const workspaces = await getWorkspaces({ fs });
+    const actualPackagePaths = (
+      await Promise.all(
+        workspaces.map(workspace => getWorkspacePackagePaths({ fs, workspace }))
+      )
+    ).flat();
+
+    expect(actualPackagePaths).toEqual(packagePaths);
+  });
+});

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

@@ -277,7 +277,45 @@ it('should prefer package.json engines over project setting from config and warn
   ]);
 });
 
+it('should warn when package.json engines is exact version', async () => {
+  expect(
+    await getNodeVersion(
+      path.join(__dirname, 'pkg-engine-node-exact'),
+      undefined,
+      {},
+      {}
+    )
+  ).toHaveProperty('range', '16.x');
+  expect(warningMessages).toStrictEqual([
+    'Warning: Detected "engines": { "node": "16.14.0" } in your `package.json` with major.minor.patch, but only major Node.js Version can be selected. Learn More: http://vercel.link/node-version',
+  ]);
+});
+
+it('should warn when package.json engines is greater than', async () => {
+  expect(
+    await getNodeVersion(
+      path.join(__dirname, 'pkg-engine-node-greaterthan'),
+      undefined,
+      {},
+      {}
+    )
+  ).toHaveProperty('range', '16.x');
+  expect(warningMessages).toStrictEqual([
+    'Warning: Detected "engines": { "node": ">=16" } in your `package.json` that will automatically upgrade when a new major Node.js Version is released. Learn More: http://vercel.link/node-version',
+  ]);
+});
+
 it('should not warn when package.json engines matches project setting from config', async () => {
+  expect(
+    await getNodeVersion(
+      path.join(__dirname, 'pkg-engine-node'),
+      undefined,
+      { nodeVersion: '14' },
+      {}
+    )
+  ).toHaveProperty('range', '14.x');
+  expect(warningMessages).toStrictEqual([]);
+
   expect(
     await getNodeVersion(
       path.join(__dirname, 'pkg-engine-node'),
@@ -287,6 +325,16 @@ it('should not warn when package.json engines matches project setting from confi
     )
   ).toHaveProperty('range', '14.x');
   expect(warningMessages).toStrictEqual([]);
+
+  expect(
+    await getNodeVersion(
+      path.join(__dirname, 'pkg-engine-node'),
+      undefined,
+      { nodeVersion: '<15' },
+      {}
+    )
+  ).toHaveProperty('range', '14.x');
+  expect(warningMessages).toStrictEqual([]);
 });
 
 it('should get latest node version', async () => {

packages/build-utils/tsconfig.json

@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "./dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "es2019"
+    "target": "ES2020"
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules"]

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "24.2.5",
+  "version": "25.1.0",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -30,7 +30,6 @@
     "scripts/preinstall.js"
   ],
   "ava": {
-    "compileEnhancements": false,
     "extensions": [
       "ts"
     ],
@@ -40,19 +39,19 @@
     ]
   },
   "engines": {
-    "node": ">= 12"
+    "node": ">= 14"
   },
   "dependencies": {
-    "@vercel/build-utils": "3.1.1",
-    "@vercel/go": "1.4.4",
-    "@vercel/next": "2.9.0",
-    "@vercel/node": "1.15.4",
-    "@vercel/python": "2.3.4",
-    "@vercel/redwood": "0.8.4",
-    "@vercel/remix": "0.0.2",
-    "@vercel/ruby": "1.3.7",
-    "@vercel/static-build": "0.26.0",
-    "update-notifier": "4.1.0"
+    "@vercel/build-utils": "4.1.0",
+    "@vercel/go": "2.0.1",
+    "@vercel/next": "3.0.1",
+    "@vercel/node": "2.1.0",
+    "@vercel/python": "3.0.1",
+    "@vercel/redwood": "1.0.1",
+    "@vercel/remix": "1.0.1",
+    "@vercel/ruby": "1.3.9",
+    "@vercel/static-build": "1.0.1",
+    "update-notifier": "5.1.0"
   },
   "devDependencies": {
     "@alex_neo/jest-expect-message": "1.0.5",
@@ -95,8 +94,8 @@
     "@types/which": "1.3.2",
     "@types/write-json-file": "2.2.1",
     "@types/yauzl-promise": "2.1.0",
-    "@vercel/client": "11.0.4",
-    "@vercel/frameworks": "1.0.0",
+    "@vercel/client": "12.0.1",
+    "@vercel/frameworks": "1.0.1",
     "@vercel/ncc": "0.24.0",
     "@zeit/fun": "0.11.2",
     "@zeit/source-map-support": "0.6.2",

packages/cli/src/commands/build.ts

@@ -4,6 +4,7 @@ import dotenv from 'dotenv';
 import { join, relative } from 'path';
 import {
   detectBuilders,
+  normalizePath,
   Files,
   FileFsRef,
   PackageJson,
@@ -45,6 +46,7 @@ import {
   writeBuildResult,
 } from '../util/build/write-build-result';
 import { importBuilders, BuilderWithPkg } from '../util/build/import-builders';
+import { initCorepack, cleanupCorepack } from '../util/build/corepack';
 
 type BuildResult = BuildResultV2 | BuildResultV3;
 
@@ -177,7 +179,7 @@ export default async function main(client: Client): Promise<number> {
 
   // Get a list of source files
   const files = (await getFiles(workPath, client)).map(f =>
-    relative(workPath, f)
+    normalizePath(relative(workPath, f))
   );
 
   const routesResult = getTransformedRoutes({ nowConfig: vercelConfig || {} });
@@ -265,19 +267,20 @@ export default async function main(client: Client): Promise<number> {
   }
 
   // Delete output directory from potential previous build
-  await fs.remove(OUTPUT_DIR);
+  const outputDir = join(cwd, OUTPUT_DIR);
+  await fs.remove(outputDir);
 
   const buildStamp = stamp();
 
   // Create fresh new output directory
-  await fs.mkdirp(OUTPUT_DIR);
+  await fs.mkdirp(outputDir);
 
   const ops: Promise<Error | void>[] = [];
 
   // Write the `detectedBuilders` result to output dir
   ops.push(
     fs.writeJSON(
-      join(OUTPUT_DIR, 'builds.json'),
+      join(outputDir, 'builds.json'),
       {
         '//': 'This file was generated by the `vercel build` command. It is not part of the Build Output API.',
         target,
@@ -312,6 +315,10 @@ export default async function main(client: Client): Promise<number> {
   // TODO: parallelize builds
   const buildResults: Map<Builder, BuildResult> = new Map();
   const overrides: PathOverride[] = [];
+  const repoRootPath = cwd;
+  const rootPackageJsonPath = repoRootPath || workPath;
+  const corepackShimDir = await initCorepack({ cwd, rootPackageJsonPath });
+
   for (const build of builds) {
     if (typeof build.src !== 'string') continue;
 
@@ -331,7 +338,6 @@ export default async function main(client: Client): Promise<number> {
       framework: project.settings.framework,
       nodeVersion: project.settings.nodeVersion,
     };
-    const repoRootPath = cwd === workPath ? undefined : cwd;
     const buildOptions: BuildOptions = {
       files: filesMap,
       entrypoint: build.src,
@@ -352,6 +358,7 @@ export default async function main(client: Client): Promise<number> {
     // Start flushing the file outputs to the filesystem asynchronously
     ops.push(
       writeBuildResult(
+        outputDir,
         buildResult,
         build,
         builder,
@@ -366,6 +373,10 @@ export default async function main(client: Client): Promise<number> {
     );
   }
 
+  if (corepackShimDir) {
+    cleanupCorepack(corepackShimDir);
+  }
+
   // Wait for filesystem operations to complete
   // TODO render progress bar?
   let hadError = false;
@@ -379,7 +390,7 @@ export default async function main(client: Client): Promise<number> {
   if (hadError) return 1;
 
   // Merge existing `config.json` file into the one that will be produced
-  const configPath = join(OUTPUT_DIR, 'config.json');
+  const configPath = join(outputDir, 'config.json');
   // TODO: properly type
   const existingConfig = await readJSONFile<any>(configPath);
   if (existingConfig instanceof CantParseJSONFile) {
@@ -437,7 +448,7 @@ export default async function main(client: Client): Promise<number> {
     wildcard: mergedWildcard,
     overrides: mergedOverrides,
   };
-  await fs.writeJSON(join(OUTPUT_DIR, 'config.json'), config, { spaces: 2 });
+  await fs.writeJSON(join(outputDir, 'config.json'), config, { spaces: 2 });
 
   output.print(
     `${prependEmoji(

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

@@ -1,4 +1,5 @@
 import { resolve, join } from 'path';
+import fs from 'fs-extra';
 
 import DevServer from '../../util/dev/server';
 import parseListen from '../../util/dev/parse-listen';
@@ -12,6 +13,7 @@ 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';
 
 type Options = {
   '--listen': string;
@@ -104,6 +106,15 @@ export default async function dev(
     devCommand = process.env.VERCEL_DEV_COMMAND;
   }
 
+  // If there is no Development Command, we must delete the
+  // v3 Build Output because it will incorrectly be detected by
+  // @vercel/static-build in BuildOutputV3.getBuildOutputDirectory()
+  if (!devCommand) {
+    output.log(`Removing ${OUTPUT_DIR}`);
+    const outputDir = join(cwd, OUTPUT_DIR);
+    await fs.remove(outputDir);
+  }
+
   const devServer = new DevServer(cwd, {
     output,
     devCommand,

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

@@ -42,6 +42,13 @@ const help = () => {
 
   ${chalk.dim('Examples:')}
 
+  ${chalk.gray(
+    '–'
+  )} Pull all Development Environment Variables down from the cloud
+
+      ${chalk.cyan(`$ ${getPkgName()} env pull <file>`)}
+      ${chalk.cyan(`$ ${getPkgName()} env pull .env.development.local`)}
+
   ${chalk.gray('–')} Add a new variable to multiple Environments
 
       ${chalk.cyan(`$ ${getPkgName()} env add <name>`)}

packages/cli/src/commands/pull.ts

@@ -25,7 +25,7 @@ import {
 
 const help = () => {
   return console.log(`
-  ${chalk.bold(`${logo} ${getPkgName()} pull`)} [path]
+  ${chalk.bold(`${logo} ${getPkgName()} pull`)} [project-path]
 
  ${chalk.dim('Options:')}
 
@@ -42,25 +42,29 @@ const help = () => {
 
   ${chalk.dim('Examples:')}
 
-  ${chalk.gray('–')} Pull the latest Project Settings from the cloud
+  ${chalk.gray(
+    '–'
+  )} Pull the latest Environment Variables and Project Settings from the cloud
+    and stores them in \`.vercel/.env.\${target}.local\` and \`.vercel/project.json\` respectively.
 
     ${chalk.cyan(`$ ${getPkgName()} pull`)}
     ${chalk.cyan(`$ ${getPkgName()} pull ./path-to-project`)}
-    ${chalk.cyan(`$ ${getPkgName()} pull --env .env.local`)}
-    ${chalk.cyan(`$ ${getPkgName()} pull ./path-to-project --env .env.local`)}
 
-  ${chalk.gray('–')} Pull specific environment's Project Settings from the cloud
+  ${chalk.gray('–')} Pull for a specific environment
 
     ${chalk.cyan(
       `$ ${getPkgName()} pull --environment=${getEnvTargetPlaceholder()}`
     )}
+
+  ${chalk.gray(
+    'If you want to download environment variables to a specific file, use `vercel env pull` instead.'
+  )}
 `);
 };
 
 function processArgs(client: Client) {
   return getArgs(client.argv.slice(2), {
     '--yes': Boolean,
-    '--env': String, // deprecated
     '--environment': String,
     '--debug': Boolean,
     '-d': '--debug',

packages/cli/src/index.ts

@@ -58,6 +58,7 @@ const isCanary = pkg.version.includes('canary');
 const notifier = updateNotifier({
   pkg,
   distTag: isCanary ? 'canary' : 'latest',
+  updateCheckInterval: 1000 * 60 * 60 * 24 * 7, // 1 week
 });
 
 const VERCEL_DIR = getGlobalPathConfig();

packages/cli/src/util/build/corepack.ts

@@ -0,0 +1,82 @@
+import { delimiter, join } from 'path';
+import { PackageJson, spawnAsync } from '@vercel/build-utils';
+import fs from 'fs-extra';
+import { CantParseJSONFile } from '../errors-ts';
+import { VERCEL_DIR } from '../projects/link';
+import readJSONFile from '../read-json-file';
+
+export async function initCorepack({
+  cwd,
+  rootPackageJsonPath,
+}: {
+  cwd: string;
+  rootPackageJsonPath: string;
+}): Promise<string | null> {
+  if (process.env.ENABLE_EXPERIMENTAL_COREPACK !== '1') {
+    // Since corepack is experimental, we need to exit early
+    // unless the user explicitly enables it with the env var.
+    return null;
+  }
+  const pkg = await readJSONFile<PackageJson>(
+    join(rootPackageJsonPath, 'package.json')
+  );
+  if (pkg instanceof CantParseJSONFile) {
+    console.warn(
+      'Warning: Could not enable corepack because package.json is invalid JSON'
+    );
+  } else if (!pkg?.packageManager) {
+    console.warn(
+      'Warning: Could not enable corepack because package.json is missing "packageManager" property'
+    );
+  } else {
+    console.log(
+      `Detected ENABLE_EXPERIMENTAL_COREPACK=1 and "${pkg.packageManager}" in package.json`
+    );
+    const corepackRootDir = join(cwd, VERCEL_DIR, 'cache', 'corepack');
+    const corepackHomeDir = join(corepackRootDir, 'home');
+    const corepackShimDir = join(corepackRootDir, 'shim');
+    await fs.mkdirp(corepackHomeDir);
+    await fs.mkdirp(corepackShimDir);
+    process.env.COREPACK_HOME = corepackHomeDir;
+    process.env.PATH = `${corepackShimDir}${delimiter}${process.env.PATH}`;
+    process.env.DEBUG = process.env.DEBUG
+      ? `corepack,${process.env.DEBUG}`
+      : 'corepack';
+    const pkgManagerName = pkg.packageManager.split('@')[0];
+    // We must explicitly call `corepack enable npm` since `corepack enable`
+    // doesn't work with npm. See https://github.com/nodejs/corepack/pull/24
+    // Also, `corepack enable` is too broad and will change the verison of
+    // yarn & pnpm even though those versions are not specified by the user.
+    // See https://github.com/nodejs/corepack#known-good-releases
+    // Finally, we use `--install-directory` so we can cache the result to
+    // reuse for subsequent builds. See `@vercel/vc-build` for `prepareCache`.
+    await spawnAsync(
+      'corepack',
+      ['enable', pkgManagerName, '--install-directory', corepackShimDir],
+      {
+        prettyCommand: `corepack enable ${pkgManagerName}`,
+      }
+    );
+    return corepackShimDir;
+  }
+  return null;
+}
+
+export function cleanupCorepack(corepackShimDir: string) {
+  if (process.env.COREPACK_HOME) {
+    delete process.env.COREPACK_HOME;
+  }
+  if (process.env.PATH) {
+    process.env.PATH = process.env.PATH.replace(
+      `${corepackShimDir}${delimiter}`,
+      ''
+    );
+  }
+  if (process.env.DEBUG) {
+    if (process.env.DEBUG === 'corepack') {
+      delete process.env.DEBUG;
+    } else {
+      process.env.DEBUG = process.env.DEBUG.replace('corepack,', '');
+    }
+  }
+}

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

@@ -106,9 +106,10 @@ export async function resolveBuilders(
         // If `pkgPath` wasn't found in `.vercel/builders` then try as a CLI local
         // dependency. `require.resolve()` will throw if the Builder is not a CLI
         // dep, in which case we'll install it into `.vercel/builders`.
-        pkgPath = require.resolve(`${name}/package.json`, {
+        // NOTE: `eval('require')` is necessary to avoid bad transpilation to `__webpack_require__`
+        pkgPath = eval('require').resolve(`${name}/package.json`, {
           paths: [__dirname],
-        });
+        }) as string;
         builderPkg = await readJSON(pkgPath);
       }
 
@@ -148,7 +149,9 @@ export async function resolveBuilders(
       // TODO: handle `parsed.type === 'tag'` ("latest" vs. anything else?)
 
       const path = join(dirname(pkgPath), builderPkg.main || 'index.js');
-      const builder = require(path);
+
+      // NOTE: `eval('require')` is necessary to avoid bad transpilation to `__webpack_require__`
+      const builder = eval('require')(path);
 
       builders.set(spec, {
         builder,

packages/cli/src/util/build/write-build-result.ts

@@ -23,6 +23,7 @@ import { VERCEL_DIR } from '../projects/link';
 export const OUTPUT_DIR = join(VERCEL_DIR, 'output');
 
 export async function writeBuildResult(
+  outputDir: string,
   buildResult: BuildResultV2 | BuildResultV3,
   build: Builder,
   builder: BuilderV2 | BuilderV3,
@@ -31,9 +32,13 @@ export async function writeBuildResult(
 ) {
   const { version } = builder;
   if (version === 2) {
-    return writeBuildResultV2(buildResult as BuildResultV2, cleanUrls);
+    return writeBuildResultV2(
+      outputDir,
+      buildResult as BuildResultV2,
+      cleanUrls
+    );
   } else if (version === 3) {
-    return writeBuildResultV3(buildResult as BuildResultV3, build);
+    return writeBuildResultV3(outputDir, buildResult as BuildResultV3, build);
   }
   throw new Error(
     `Unsupported Builder version \`${version}\` from "${builderPkg.name}"`
@@ -67,11 +72,12 @@ export interface PathOverride {
  * the filesystem.
  */
 async function writeBuildResultV2(
+  outputDir: string,
   buildResult: BuildResultV2,
   cleanUrls?: boolean
 ) {
   if ('buildOutputPath' in buildResult) {
-    await mergeBuilderOutput(buildResult);
+    await mergeBuilderOutput(outputDir, buildResult);
     return;
   }
 
@@ -79,16 +85,16 @@ async function writeBuildResultV2(
   const overrides: Record<string, PathOverride> = {};
   for (const [path, output] of Object.entries(buildResult.output)) {
     if (isLambda(output)) {
-      await writeLambda(output, path, lambdas);
+      await writeLambda(outputDir, output, path, lambdas);
     } else if (isPrerender(output)) {
-      await writeLambda(output.lambda, path, lambdas);
+      await writeLambda(outputDir, output.lambda, path, lambdas);
 
       // Write the fallback file alongside the Lambda directory
       let fallback = output.fallback;
       if (fallback) {
         const ext = getFileExtension(fallback);
         const fallbackName = `${path}.prerender-fallback${ext}`;
-        const fallbackPath = join(OUTPUT_DIR, 'functions', fallbackName);
+        const fallbackPath = join(outputDir, 'functions', fallbackName);
         const stream = fallback.toStream();
         await pipe(
           stream,
@@ -101,7 +107,7 @@ async function writeBuildResultV2(
       }
 
       const prerenderConfigPath = join(
-        OUTPUT_DIR,
+        outputDir,
         'functions',
         `${path}.prerender-config.json`
       );
@@ -112,9 +118,9 @@ async function writeBuildResultV2(
       };
       await fs.writeJSON(prerenderConfigPath, prerenderConfig, { spaces: 2 });
     } else if (isFile(output)) {
-      await writeStaticFile(output, path, overrides, cleanUrls);
+      await writeStaticFile(outputDir, output, path, overrides, cleanUrls);
     } else if (isEdgeFunction(output)) {
-      await writeEdgeFunction(output, path);
+      await writeEdgeFunction(outputDir, output, path);
     } else {
       throw new Error(
         `Unsupported output type: "${(output as any).type}" for ${path}`
@@ -128,15 +134,24 @@ async function writeBuildResultV2(
  * Writes the output from the `build()` return value of a v3 Builder to
  * the filesystem.
  */
-async function writeBuildResultV3(buildResult: BuildResultV3, build: Builder) {
+async function writeBuildResultV3(
+  outputDir: string,
+  buildResult: BuildResultV3,
+  build: Builder
+) {
   const { output } = buildResult;
+  const src = build.src;
+  if (typeof src !== 'string') {
+    throw new Error(`Expected "build.src" to be a string`);
+  }
+  const ext = extname(src);
+  const path = build.config?.zeroConfig
+    ? src.substring(0, src.length - ext.length)
+    : src;
   if (isLambda(output)) {
-    const src = build.src!;
-    const ext = extname(src);
-    const path = build.config?.zeroConfig
-      ? src.substring(0, src.length - ext.length)
-      : src;
-    await writeLambda(output, path);
+    await writeLambda(outputDir, output, path);
+  } else if (isEdgeFunction(output)) {
+    await writeEdgeFunction(outputDir, output, path);
   } else {
     throw new Error(
       `Unsupported output type: "${(output as any).type}" for ${build.src}`
@@ -154,6 +169,7 @@ async function writeBuildResultV3(buildResult: BuildResultV3, build: Builder) {
  * @param overrides Record of override configuration when a File is renamed or has other metadata
  */
 async function writeStaticFile(
+  outputDir: string,
   file: File,
   path: string,
   overrides: Record<string, PathOverride>,
@@ -191,7 +207,7 @@ async function writeStaticFile(
     overrides[fsPath] = override;
   }
 
-  const dest = join(OUTPUT_DIR, 'static', fsPath);
+  const dest = join(outputDir, 'static', fsPath);
   await fs.mkdirp(dirname(dest));
 
   // TODO: handle (or skip) symlinks?
@@ -205,8 +221,12 @@ async function writeStaticFile(
  * @param edgeFunction The `EdgeFunction` instance
  * @param path The URL path where the `EdgeFunction` can be accessed from
  */
-async function writeEdgeFunction(edgeFunction: EdgeFunction, path: string) {
-  const dest = join(OUTPUT_DIR, 'functions', `${path}.func`);
+async function writeEdgeFunction(
+  outputDir: string,
+  edgeFunction: EdgeFunction,
+  path: string
+) {
+  const dest = join(outputDir, 'functions', `${path}.func`);
 
   await fs.mkdirp(dest);
   const ops: Promise<any>[] = [];
@@ -235,11 +255,12 @@ async function writeEdgeFunction(edgeFunction: EdgeFunction, path: string) {
  * @param lambdas (optional) Map of `Lambda` instances that have previously been written
  */
 async function writeLambda(
+  outputDir: string,
   lambda: Lambda,
   path: string,
   lambdas?: Map<Lambda, string>
 ) {
-  const dest = join(OUTPUT_DIR, 'functions', `${path}.func`);
+  const dest = join(outputDir, 'functions', `${path}.func`);
 
   // If the `lambda` has already been written to the filesystem at a different
   // location then create a symlink to the previous location instead of copying
@@ -248,7 +269,7 @@ async function writeLambda(
   if (existingLambdaPath) {
     const destDir = dirname(dest);
     const targetDest = join(
-      OUTPUT_DIR,
+      outputDir,
       'functions',
       `${existingLambdaPath}.func`
     );
@@ -312,14 +333,17 @@ async function writeLambda(
  * `.vercel/output` directory that was specified by the Builder into the
  * `vc build` output directory.
  */
-async function mergeBuilderOutput(buildResult: BuildResultBuildOutput) {
-  const absOutputDir = resolve(OUTPUT_DIR);
+async function mergeBuilderOutput(
+  outputDir: string,
+  buildResult: BuildResultBuildOutput
+) {
+  const absOutputDir = resolve(outputDir);
   if (absOutputDir === buildResult.buildOutputPath) {
     // `.vercel/output` dir is already in the correct location,
     // so no need to do anything
     return;
   }
-  await fs.copy(buildResult.buildOutputPath, OUTPUT_DIR);
+  await fs.copy(buildResult.buildOutputPath, outputDir);
 }
 
 /**

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

@@ -142,6 +142,7 @@ export async function executeBuild(
     files,
     entrypoint,
     workPath,
+    repoRootPath: workPath,
     config,
     meta: {
       isDev: true,

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

@@ -1735,6 +1735,7 @@ export default class DevServer {
           entrypoint: match.entrypoint,
           workPath,
           config: match.config || {},
+          repoRootPath: this.cwd,
           meta: {
             isDev: true,
             requestPath,

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

@@ -1,5 +1,4 @@
 import { resolve } from 'path';
-import _glob, { IOptions as GlobOptions } from 'glob';
 import fs from 'fs-extra';
 import { getVercelIgnore } from '@vercel/client';
 import uniqueStrings from './unique-strings';
@@ -21,14 +20,6 @@ function flatten(
   return res;
 }
 
-async function glob(pattern: string, options: GlobOptions): Promise<string[]> {
-  return new Promise((resolve, reject) => {
-    _glob(pattern, options, (err, files) => {
-      err ? reject(err) : resolve(files);
-    });
-  });
-}
-
 /**
  * Transform relative paths into absolutes,
  * and maintains absolutes as such.
@@ -65,15 +56,16 @@ interface StaticFilesOptions {
 export async function staticFiles(
   path: string,
   { output, src }: StaticFilesOptions
-) {
+): Promise<string[]> {
   const { debug, time } = output;
   let files: string[] = [];
 
   // The package.json `files` whitelist still
   // honors ignores: https://docs.npmjs.com/files/package.json#files
   const source = src || '.';
-  // Convert all filenames into absolute paths
-  const search = await glob(source, { cwd: path, absolute: true, dot: true });
+
+  // Ensure that `path` is an absolute path
+  const search = resolve(path, source);
 
   // Compile list of ignored patterns and files
   const { ig } = await getVercelIgnore(path);
@@ -104,7 +96,7 @@ export async function staticFiles(
   // Locate files
   files = await time(
     `Locating files ${path}`,
-    explode(search, {
+    explode([search], {
       accepts,
       output,
     })
@@ -164,7 +156,7 @@ async function explode(
       const all = await fs.readdir(file);
       /* eslint-disable no-use-before-define */
       const recursive = many(all.map(subdir => asAbsolute(subdir, file)));
-      return (recursive as any) as Promise<string | null>;
+      return recursive as any as Promise<string | null>;
       /* eslint-enable no-use-before-define */
     }
     if (!s.isFile()) {

packages/cli/src/util/unique-strings.ts

@@ -1,12 +1,12 @@
 /**
  * A fast implementation of an algorithm that takes an array and returns a copy of the array without duplicates.
- * We used to use `array-unique` ( https://github.com/jonschlinkert/array-unique/blob/5d1fbe560da8125e28e4ad6fbfa9daaf9f2ec120/index.js )
+ * We used to use `array-unique` (https://github.com/jonschlinkert/array-unique/blob/5d1fbe560da8125e28e4ad6fbfa9daaf9f2ec120/index.js)
  * but from running benchmarks, found the implementation to be too slow. This implementation has show to be upto ~10x faster for large
  * projects
  * @param {Array} arr Input array that potentially has duplicates
  * @returns {Array} An array of the unique values in `arr`
  */
-export default (arr: string[]) => {
+export default (arr: string[]): string[] => {
   const len = arr.length;
   const res: string[] = [];
   const o: { [key: string]: string | number } = {};

packages/cli/test/fixtures/unit/commands/build/.gitignore

@@ -0,0 +1,2 @@
+!/*/.vercel
+/*/.vercel/output

packages/cli/test/fixtures/unit/commands/build/edge-function/.vercel/builders/.gitignore

@@ -0,0 +1 @@
+!node_modules

packages/cli/test/fixtures/unit/commands/build/edge-function/.vercel/builders/node_modules/edge-function/builder.js

@@ -0,0 +1,15 @@
+const { EdgeFunction } = require('@vercel/build-utils');
+
+exports.version = 3;
+
+exports.build = async ({ entrypoint, files }) => {
+    const output = new EdgeFunction({
+        name: entrypoint,
+        deploymentTarget: 'v8-worker',
+        entrypoint,
+        files: {
+            [entrypoint]: files[entrypoint]
+        },
+    });
+    return { output };
+};

packages/cli/test/fixtures/unit/commands/build/edge-function/.vercel/builders/node_modules/edge-function/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "edge-function",
+  "private": true,
+  "version": "0.0.0",
+  "main": "builder.js"
+}

packages/cli/test/fixtures/unit/commands/build/edge-function/.vercel/project.json

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

packages/cli/test/fixtures/unit/commands/build/edge-function/api/edge.js

@@ -0,0 +1,5 @@
+export const config = {
+  runtime: 'experimental-edge',
+};
+
+export default req => new Response('from edge');

packages/cli/test/fixtures/unit/commands/build/edge-function/vercel.json

@@ -0,0 +1,7 @@
+{
+  "functions": {
+    "api/*.js": {
+      "runtime": "edge-function@0.0.0"
+    }
+  }
+}

packages/cli/test/fixtures/unit/commands/build/node/.vercel/project.json

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

packages/cli/test/fixtures/unit/commands/build/node/api/es6.js

@@ -0,0 +1 @@
+export default (req, res) => res.end('Vercel');

packages/cli/test/fixtures/unit/commands/build/node/api/index.js

@@ -0,0 +1 @@
+module.exports = (req, res) => res.end('Vercel');

packages/cli/test/fixtures/unit/commands/build/node/api/mjs.mjs

@@ -0,0 +1 @@
+export default (req, res) => res.end('Vercel');

packages/cli/test/fixtures/unit/commands/build/node/api/typescript.ts

@@ -0,0 +1,3 @@
+import { IncomingMessage, ServerResponse } from 'http';
+
+export default (req: IncomingMessage, res: ServerResponse) => res.end('Vercel');

packages/cli/test/fixtures/unit/commands/build/static/.vercel/project.json

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

packages/cli/test/fixtures/unit/commands/build/static/index.html

@@ -0,0 +1 @@
+<h1>Vercel</h1>

packages/cli/test/fixtures/unit/commands/build/third-party-builder/.vercel/builders/.gitignore

@@ -0,0 +1 @@
+!node_modules

packages/cli/test/fixtures/unit/commands/build/third-party-builder/.vercel/builders/node_modules/txt-builder/index.js

@@ -0,0 +1,14 @@
+const { Lambda } = require('@vercel/build-utils');
+
+exports.version = 3;
+
+exports.build = async ({ entrypoint, files }) => {
+    const output = new Lambda({
+        files: {
+            [entrypoint]: files[entrypoint]
+        },
+        runtime: 'provided',
+        handler: entrypoint
+    });
+    return { output };
+};

packages/cli/test/fixtures/unit/commands/build/third-party-builder/.vercel/builders/node_modules/txt-builder/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "txt-builder",
+  "private": true,
+  "version": "0.0.0",
+  "main": "index.js"
+}

packages/cli/test/fixtures/unit/commands/build/third-party-builder/.vercel/project.json

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

packages/cli/test/fixtures/unit/commands/build/third-party-builder/api/foo.txt

@@ -0,0 +1 @@
+Text file

packages/cli/test/fixtures/unit/commands/build/third-party-builder/vercel.json

@@ -0,0 +1,7 @@
+{
+  "functions": {
+    "api/*.txt": {
+      "runtime": "txt-builder@0.0.0"
+    }
+  }
+}

packages/cli/test/helpers/prepare.js

@@ -19,7 +19,7 @@ const getRevertAliasConfigFile = () => {
     ],
   });
 };
-module.exports = async function prepare(session, binaryPath) {
+module.exports = async function prepare(session, binaryPath, tmpFixturesDir) {
   const spec = {
     'static-single-file': {
       'first.png': getImageFile(session, { size: 30 }),
@@ -440,16 +440,58 @@ module.exports = async function prepare(session, binaryPath) {
         },
       }),
     },
+    'vc-build-corepack-npm': {
+      '.vercel/project.json': JSON.stringify({
+        orgId: '.',
+        projectId: '.',
+        settings: {
+          framework: null,
+        },
+      }),
+      'package.json': JSON.stringify({
+        private: true,
+        packageManager: 'npm@8.1.0',
+        scripts: {
+          build: 'mkdir -p public && npm --version > public/index.txt',
+        },
+      }),
+    },
+    'vc-build-corepack-pnpm': {
+      '.vercel/project.json': JSON.stringify({
+        orgId: '.',
+        projectId: '.',
+        settings: {
+          framework: null,
+        },
+      }),
+      'package.json': JSON.stringify({
+        private: true,
+        packageManager: 'pnpm@7.1.0',
+        scripts: {
+          build: 'mkdir -p public && pnpm --version > public/index.txt',
+        },
+      }),
+    },
+    'vc-build-corepack-yarn': {
+      '.vercel/project.json': JSON.stringify({
+        orgId: '.',
+        projectId: '.',
+        settings: {
+          framework: null,
+        },
+      }),
+      'package.json': JSON.stringify({
+        private: true,
+        packageManager: 'yarn@2.4.3',
+        scripts: {
+          build: 'mkdir -p public && yarn --version > public/index.txt',
+        },
+      }),
+    },
   };
 
   for (const [typeName, needed] of Object.entries(spec)) {
-    const directory = join(
-      __dirname,
-      '..',
-      'fixtures',
-      'integration',
-      typeName
-    );
+    const directory = join(tmpFixturesDir, typeName);
 
     await mkdirp(directory);
 

packages/cli/test/integration.js

@@ -4,7 +4,7 @@ import { URL, parse as parseUrl } from 'url';
 import test from 'ava';
 import semVer from 'semver';
 import { Readable } from 'stream';
-import { homedir } from 'os';
+import { homedir, tmpdir } from 'os';
 import _execa from 'execa';
 import XDGAppPaths from 'xdg-app-paths';
 import fetch from 'node-fetch';
@@ -31,7 +31,7 @@ function execa(file, args, options) {
 }
 
 function fixture(name) {
-  const directory = path.join(__dirname, 'fixtures', 'integration', name);
+  const directory = path.join(tmpFixturesDir, name);
   const config = path.join(directory, 'project.json');
 
   // We need to remove it, otherwise we can't re-use fixtures
@@ -146,6 +146,7 @@ let email;
 let contextName;
 
 let tmpDir;
+let tmpFixturesDir = path.join(tmpdir(), 'tmp-fixtures');
 
 let globalDir = XDGAppPaths('com.vercel.cli').dataDirs()[0];
 
@@ -327,7 +328,7 @@ async function setupProject(process, projectName, overrides) {
 test.before(async () => {
   try {
     await createUser();
-    await prepareFixtures(contextName, binaryPath);
+    await prepareFixtures(contextName, binaryPath, tmpFixturesDir);
   } catch (err) {
     console.log('Failed `test.before`');
     console.log(err);
@@ -335,6 +336,8 @@ test.before(async () => {
 });
 
 test.after.always(async () => {
+  delete process.env.ENABLE_EXPERIMENTAL_COREPACK;
+
   if (loginApiServer) {
     // Stop mock server
     loginApiServer.close();
@@ -349,6 +352,11 @@ test.after.always(async () => {
     // Remove config directory entirely
     tmpDir.removeCallback();
   }
+
+  if (tmpFixturesDir) {
+    console.log('removing tmpFixturesDir', tmpFixturesDir);
+    fs.removeSync(tmpFixturesDir);
+  }
 });
 
 test('default command should prompt login with empty auth.json', async t => {
@@ -390,6 +398,99 @@ test('login', async t => {
   t.is(auth.token, token);
 });
 
+test('[vc build] should build project with corepack and select npm@8.1.0', async t => {
+  process.env.ENABLE_EXPERIMENTAL_COREPACK = '1';
+  const directory = fixture('vc-build-corepack-npm');
+  const before = await _execa('npm', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  const output = await execute(['build'], { cwd: directory });
+  t.is(output.exitCode, 0, formatOutput(output));
+  t.regex(output.stderr, /Build Completed/gm);
+  const after = await _execa('npm', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  // Ensure global npm didn't change
+  t.is(before.stdout, after.stdout);
+  // Ensure version is correct
+  t.is(
+    await fs.readFile(
+      path.join(directory, '.vercel/output/static/index.txt'),
+      'utf8'
+    ),
+    '8.1.0\n'
+  );
+  // Ensure corepack will be cached
+  const contents = fs.readdirSync(
+    path.join(directory, '.vercel/cache/corepack')
+  );
+  t.deepEqual(contents, ['home', 'shim']);
+});
+
+test('[vc build] should build project with corepack and select pnpm@7.1.0', async t => {
+  process.env.ENABLE_EXPERIMENTAL_COREPACK = '1';
+  const directory = fixture('vc-build-corepack-pnpm');
+  const before = await _execa('pnpm', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  const output = await execute(['build'], { cwd: directory });
+  t.is(output.exitCode, 0, formatOutput(output));
+  t.regex(output.stderr, /Build Completed/gm);
+  const after = await _execa('pnpm', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  // Ensure global pnpm didn't change
+  t.is(before.stdout, after.stdout);
+  // Ensure version is correct
+  t.is(
+    await fs.readFile(
+      path.join(directory, '.vercel/output/static/index.txt'),
+      'utf8'
+    ),
+    '7.1.0\n'
+  );
+  // Ensure corepack will be cached
+  const contents = fs.readdirSync(
+    path.join(directory, '.vercel/cache/corepack')
+  );
+  t.deepEqual(contents, ['home', 'shim']);
+});
+
+test('[vc build] should build project with corepack and select yarn@2.4.3', async t => {
+  process.env.ENABLE_EXPERIMENTAL_COREPACK = '1';
+  const directory = fixture('vc-build-corepack-yarn');
+  const before = await _execa('yarn', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  const output = await execute(['build'], { cwd: directory });
+  t.is(output.exitCode, 0, formatOutput(output));
+  t.regex(output.stderr, /Build Completed/gm);
+  const after = await _execa('yarn', ['--version'], {
+    cwd: directory,
+    reject: false,
+  });
+  // Ensure global yarn didn't change
+  t.is(before.stdout, after.stdout);
+  // Ensure version is correct
+  t.is(
+    await fs.readFile(
+      path.join(directory, '.vercel/output/static/index.txt'),
+      'utf8'
+    ),
+    '2.4.3\n'
+  );
+  // Ensure corepack will be cached
+  const contents = fs.readdirSync(
+    path.join(directory, '.vercel/cache/corepack')
+  );
+  t.deepEqual(contents, ['home', 'shim']);
+});
+
 test('default command should deploy directory', async t => {
   const projectDir = fixture('deploy-default-with-sub-directory');
   const target = 'output';
@@ -1507,7 +1608,7 @@ test('try to purchase a domain', async t => {
 
   const { stderr, stdout, exitCode } = await execa(
     binaryPath,
-    ['domains', 'buy', `${session}-test.org`, ...defaultArgs],
+    ['domains', 'buy', `${session}-test.com`, ...defaultArgs],
     {
       reject: false,
       input: stream,
@@ -1522,10 +1623,9 @@ test('try to purchase a domain', async t => {
   console.log(exitCode);
 
   t.is(exitCode, 1);
-  t.true(
-    stderr.includes(
-      `Error! Could not purchase domain. Please add a payment method using \`vercel billing add\`.`
-    )
+  t.regex(
+    stderr,
+    /Error! Could not purchase domain\. Please add a payment method using/
   );
 });
 
@@ -1537,7 +1637,7 @@ test('try to transfer-in a domain with "--code" option', async t => {
       'transfer-in',
       '--code',
       'xyz',
-      `${session}-test.org`,
+      `${session}-test.com`,
       ...defaultArgs,
     ],
     {
@@ -1551,7 +1651,7 @@ test('try to transfer-in a domain with "--code" option', async t => {
 
   t.true(
     stderr.includes(
-      `Error! The domain "${session}-test.org" is not transferable.`
+      `Error! The domain "${session}-test.com" is not transferable.`
     )
   );
   t.is(exitCode, 1);

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

@@ -0,0 +1,240 @@
+import ms from 'ms';
+import fs from 'fs-extra';
+import { join } from 'path';
+import { client } from '../../mocks/client';
+import build from '../../../src/commands/build';
+
+jest.setTimeout(ms('1 minute'));
+
+const fixture = (name: string) =>
+  join(__dirname, '../../fixtures/unit/commands/build', name);
+
+describe('build', () => {
+  const originalCwd = process.cwd();
+
+  it('should build with `@vercel/static`', async () => {
+    const cwd = fixture('static');
+    const output = join(cwd, '.vercel/output');
+    try {
+      process.chdir(cwd);
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      // `builds.json` says that "@vercel/static" was run
+      const builds = await fs.readJSON(join(output, 'builds.json'));
+      expect(builds).toMatchObject({
+        target: 'preview',
+        builds: [
+          {
+            require: '@vercel/static',
+            apiVersion: 2,
+            src: '**',
+            use: '@vercel/static',
+          },
+        ],
+      });
+
+      // "static" directory contains static files
+      const files = await fs.readdir(join(output, 'static'));
+      expect(files.sort()).toEqual(['index.html']);
+    } finally {
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
+  it('should build with `@vercel/node`', async () => {
+    const cwd = fixture('node');
+    const output = join(cwd, '.vercel/output');
+    try {
+      process.chdir(cwd);
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      // `builds.json` says that "@vercel/node" was run
+      const builds = await fs.readJSON(join(output, 'builds.json'));
+      expect(builds).toMatchObject({
+        target: 'preview',
+        builds: [
+          {
+            require: '@vercel/node',
+            apiVersion: 3,
+            use: '@vercel/node',
+            src: 'api/es6.js',
+            config: { zeroConfig: true },
+          },
+          {
+            require: '@vercel/node',
+            apiVersion: 3,
+            use: '@vercel/node',
+            src: 'api/index.js',
+            config: { zeroConfig: true },
+          },
+          {
+            require: '@vercel/node',
+            apiVersion: 3,
+            use: '@vercel/node',
+            src: 'api/mjs.mjs',
+            config: { zeroConfig: true },
+          },
+          {
+            require: '@vercel/node',
+            apiVersion: 3,
+            use: '@vercel/node',
+            src: 'api/typescript.ts',
+            config: { zeroConfig: true },
+          },
+        ],
+      });
+
+      // "static" directory is empty
+      const hasStaticFiles = await fs.pathExists(join(output, 'static'));
+      expect(
+        hasStaticFiles,
+        'Expected ".vercel/output/static" to not exist'
+      ).toEqual(false);
+
+      // "functions/api" directory has output Functions
+      const functions = await fs.readdir(join(output, 'functions/api'));
+      expect(functions.sort()).toEqual([
+        'es6.func',
+        'index.func',
+        'mjs.func',
+        'typescript.func',
+      ]);
+    } finally {
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
+  it('should build with 3rd party Builder', async () => {
+    const cwd = fixture('third-party-builder');
+    const output = join(cwd, '.vercel/output');
+    try {
+      process.chdir(cwd);
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      // `builds.json` says that "@vercel/node" was run
+      const builds = await fs.readJSON(join(output, 'builds.json'));
+      expect(builds).toMatchObject({
+        target: 'preview',
+        builds: [
+          {
+            require: 'txt-builder',
+            apiVersion: 3,
+            use: 'txt-builder@0.0.0',
+            src: 'api/foo.txt',
+            config: {
+              zeroConfig: true,
+              functions: {
+                'api/*.txt': {
+                  runtime: 'txt-builder@0.0.0',
+                },
+              },
+            },
+          },
+          {
+            require: '@vercel/static',
+            apiVersion: 2,
+            use: '@vercel/static',
+            src: '!{api/**,package.json}',
+            config: {
+              zeroConfig: true,
+            },
+          },
+        ],
+      });
+
+      // "static" directory is empty
+      const hasStaticFiles = await fs.pathExists(join(output, 'static'));
+      expect(
+        hasStaticFiles,
+        'Expected ".vercel/output/static" to not exist'
+      ).toEqual(false);
+
+      // "functions/api" directory has output Functions
+      const functions = await fs.readdir(join(output, 'functions/api'));
+      expect(functions.sort()).toEqual(['foo.func']);
+
+      const vcConfig = await fs.readJSON(
+        join(output, 'functions/api/foo.func/.vc-config.json')
+      );
+      expect(vcConfig).toMatchObject({
+        handler: 'api/foo.txt',
+        runtime: 'provided',
+        environment: {},
+      });
+    } finally {
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
+  it('should serialize `EdgeFunction` output in version 3 Builder', async () => {
+    const cwd = fixture('edge-function');
+    const output = join(cwd, '.vercel/output');
+    try {
+      process.chdir(cwd);
+      client.setArgv('build', '--prod');
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      // `builds.json` says that "@vercel/node" was run
+      const builds = await fs.readJSON(join(output, 'builds.json'));
+      expect(builds).toMatchObject({
+        target: 'production',
+        builds: [
+          {
+            require: 'edge-function',
+            apiVersion: 3,
+            use: 'edge-function@0.0.0',
+            src: 'api/edge.js',
+            config: {
+              zeroConfig: true,
+              functions: {
+                'api/*.js': {
+                  runtime: 'edge-function@0.0.0',
+                },
+              },
+            },
+          },
+          {
+            require: '@vercel/static',
+            apiVersion: 2,
+            use: '@vercel/static',
+            src: '!{api/**,package.json}',
+            config: {
+              zeroConfig: true,
+            },
+          },
+        ],
+      });
+
+      // "static" directory is empty
+      const hasStaticFiles = await fs.pathExists(join(output, 'static'));
+      expect(
+        hasStaticFiles,
+        'Expected ".vercel/output/static" to not exist'
+      ).toEqual(false);
+
+      // "functions/api" directory has output Functions
+      const functions = await fs.readdir(join(output, 'functions/api'));
+      expect(functions.sort()).toEqual(['edge.func']);
+
+      const vcConfig = await fs.readJSON(
+        join(output, 'functions/api/edge.func/.vc-config.json')
+      );
+      expect(vcConfig).toMatchObject({
+        runtime: 'edge',
+        name: 'api/edge.js',
+        deploymentTarget: 'v8-worker',
+        entrypoint: 'api/edge.js',
+      });
+    } finally {
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+});

packages/cli/test/unit/util/build/import-builders.test.ts

@@ -10,7 +10,7 @@ import {
 import vercelNextPkg from '@vercel/next/package.json';
 import vercelNodePkg from '@vercel/node/package.json';
 
-jest.setTimeout(ms('20 seconds'));
+jest.setTimeout(ms('30 seconds'));
 
 describe('importBuilders()', () => {
   it('should import built-in Builders', async () => {

packages/cli/tsconfig.json

@@ -5,10 +5,10 @@
     "noFallthroughCasesInSwitch": true,
     "moduleResolution": "node",
     "module": "commonjs",
-    "target": "es2019",
+    "target": "ES2020",
     "esModuleInterop": true,
     "allowJs": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "resolveJsonModule": true,
     "sourceMap": true,
     "outDir": "./dist",

packages/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/client",
-  "version": "11.0.4",
+  "version": "12.0.1",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "homepage": "https://vercel.com",
@@ -20,7 +20,7 @@
     "test-unit": "yarn test tests/unit.*test.*"
   },
   "engines": {
-    "node": ">= 12"
+    "node": ">= 14"
   },
   "devDependencies": {
     "@types/async-retry": "1.4.1",
@@ -42,7 +42,7 @@
     ]
   },
   "dependencies": {
-    "@vercel/build-utils": "3.1.1",
+    "@vercel/build-utils": "4.1.0",
     "@zeit/fetch": "5.2.0",
     "async-retry": "1.2.3",
     "async-sema": "3.0.0",

packages/client/tsconfig.json

@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "outDir": "dist",
@@ -12,7 +12,7 @@
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "strict": true,
-    "target": "es2019"
+    "target": "ES2020"
   },
   "include": ["./src"]
 }

packages/frameworks/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/frameworks",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "main": "./dist/frameworks.js",
   "types": "./dist/frameworks.d.ts",
   "files": [
@@ -21,7 +21,7 @@
     "@types/js-yaml": "3.12.1",
     "@types/node": "12.0.4",
     "@types/node-fetch": "2.5.8",
-    "@vercel/routing-utils": "1.13.3",
+    "@vercel/routing-utils": "1.13.4",
     "ajv": "6.12.2",
     "typescript": "4.3.4"
   }

packages/frameworks/tsconfig.json

@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "./dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "esnext"
+    "target": "ES2020"
   },
   "include": ["src/*.ts"],
   "exclude": ["node_modules"]

packages/go/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/go",
-  "version": "1.4.4",
+  "version": "2.0.1",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/go",
@@ -25,7 +25,7 @@
     "@types/fs-extra": "^5.0.5",
     "@types/node-fetch": "^2.3.0",
     "@types/tar": "^4.0.0",
-    "@vercel/build-utils": "3.1.1",
+    "@vercel/build-utils": "4.1.0",
     "@vercel/ncc": "0.24.0",
     "async-retry": "1.3.1",
     "execa": "^1.0.0",

packages/go/tsconfig.json

@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": false,
     "esModuleInterop": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,6 +13,6 @@
     "noImplicitThis": false,
     "types": ["node"],
     "strict": true,
-    "target": "es2018"
+    "target": "ES2020"
   }
 }

packages/next/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/next",
-  "version": "2.9.0",
+  "version": "3.0.1",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/next-js",
@@ -45,9 +45,9 @@
     "@types/semver": "6.0.0",
     "@types/text-table": "0.2.1",
     "@types/webpack-sources": "3.2.0",
-    "@vercel/build-utils": "3.1.1",
+    "@vercel/build-utils": "4.1.0",
     "@vercel/nft": "0.19.1",
-    "@vercel/routing-utils": "1.13.3",
+    "@vercel/routing-utils": "1.13.4",
     "async-sema": "3.0.1",
     "buffer-crc32": "0.2.13",
     "cheerio": "1.0.0-rc.10",

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

@@ -2,23 +2,6 @@ const KIB = 1024;
 const MIB = 1024 * KIB;
 
 /**
- * The limit after compression. it has to be kibibyte instead of kilobyte
- * See https://github.com/cloudflare/wrangler/blob/8907b12add3d70ee21ac597b69cd66f6807571f4/src/wranglerjs/output.rs#L44
+ * The maximum size of a *compressed* edge function.
  */
-const EDGE_FUNCTION_SCRIPT_SIZE_LIMIT = MIB;
-
-/**
- * This safety buffer must cover the size of our whole runtime layer compressed
- * plus some extra space to allow it to grow in the future. At the time of
- * writing this comment the compressed size size is ~7KiB so 20KiB should
- * be more than enough.
- */
-const EDGE_FUNCTION_SCRIPT_SIZE_BUFFER = 20 * KIB;
-
-/**
- * The max size we allow for compressed user code is the compressed script
- * limit minus the compressed safety buffer. We must check this limit after
- * compressing the user code.
- */
-export const EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT =
-  EDGE_FUNCTION_SCRIPT_SIZE_LIMIT - EDGE_FUNCTION_SCRIPT_SIZE_BUFFER;
+export const EDGE_FUNCTION_SIZE_LIMIT = MIB;

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

@@ -3,7 +3,7 @@ import { readFile } from 'fs-extra';
 import { ConcatSource, Source } from 'webpack-sources';
 import { fileToSource, raw, sourcemapped } from '../sourcemapped';
 import { join } from 'path';
-import { EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT } from './constants';
+import { EDGE_FUNCTION_SIZE_LIMIT } from './constants';
 import zlib from 'zlib';
 import { promisify } from 'util';
 import bytes from 'pretty-bytes';
@@ -74,11 +74,11 @@ function getWasmImportStatements(wasm: { name: string }[] = []) {
 
 async function validateScript(content: string) {
   const gzipped = await gzip(content);
-  if (gzipped.length > EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT) {
+  if (gzipped.length > EDGE_FUNCTION_SIZE_LIMIT) {
     throw new Error(
       `Exceeds maximum edge function script size: ${bytes(
         gzipped.length
-      )} / ${bytes(EDGE_FUNCTION_USER_SCRIPT_SIZE_LIMIT)}`
+      )} / ${bytes(EDGE_FUNCTION_SIZE_LIMIT)}`
     );
   }
 }

packages/next/src/index.ts

@@ -78,6 +78,7 @@ import {
   updateRouteSrc,
   validateEntrypoint,
 } from './utils';
+import assert from 'assert';
 
 export const version = 2;
 export const htmlContentType = 'text/html; charset=utf-8';
@@ -131,10 +132,11 @@ function getRealNextVersion(entryPath: string): string | false {
     // First try to resolve the `next` dependency and get the real version from its
     // package.json. This allows the builder to be used with frameworks like Blitz that
     // bundle Next but where Next isn't in the project root's package.json
-    const nextVersion: string = require(resolveFrom(
-      entryPath,
-      'next/package.json'
-    )).version;
+
+    // NOTE: `eval('require')` is necessary to avoid bad transpilation to `__webpack_require__`
+    const nextVersion: string = eval('require')(
+      resolveFrom(entryPath, 'next/package.json')
+    ).version;
     console.log(`Detected Next.js version: ${nextVersion}`);
     return nextVersion;
   } catch (_ignored) {
@@ -2596,8 +2598,17 @@ async function getServerlessPages(params: {
 
   // Edge Functions do not consider as Serverless Functions
   for (const edgeFunctionFile of Object.keys(
-    middlewareManifest?.middleware ?? {}
+    middlewareManifest?.functions ?? {}
   )) {
+    // `getStaticProps` are expecting `Prerender` output which is a Serverless function
+    // and not an Edge Function. Therefore we only remove API endpoints for now, as they
+    // don't have `getStaticProps`.
+    //
+    // Context: https://github.com/vercel/vercel/pull/7905#discussion_r890213165
+    assert(
+      edgeFunctionFile.startsWith('/api/'),
+      `Only API endpoints are currently supported for Edge endpoints.`
+    );
     delete pages[edgeFunctionFile.slice(1) + '.js'];
   }
 

packages/next/src/server-build.ts

@@ -54,6 +54,7 @@ import prettyBytes from 'pretty-bytes';
 
 // related PR: https://github.com/vercel/next.js/pull/30046
 const CORRECT_NOT_FOUND_ROUTES_VERSION = 'v12.0.1';
+const CORRECT_MIDDLEWARE_ORDER_VERSION = 'v12.1.7-canary.29';
 
 export async function serverBuild({
   dynamicPages,
@@ -131,6 +132,10 @@ export async function serverBuild({
     nextVersion,
     CORRECT_NOT_FOUND_ROUTES_VERSION
   );
+  const isCorrectMiddlewareOrder = semver.gte(
+    nextVersion,
+    CORRECT_MIDDLEWARE_ORDER_VERSION
+  );
   let hasStatic500 = !!staticPages[path.join(entryDirectory, '500')];
 
   if (lambdaPageKeys.length === 0) {
@@ -788,6 +793,7 @@ export async function serverBuild({
     entryPath,
     outputDirectory,
     routesManifest,
+    isCorrectMiddlewareOrder,
   });
 
   const dynamicRoutes = await getDynamicRoutes(
@@ -1025,6 +1031,10 @@ export async function serverBuild({
 
       ...redirects,
 
+      // middleware comes directly after redirects but before
+      // beforeFiles rewrites as middleware is not a "file" route
+      ...(isCorrectMiddlewareOrder ? middleware.staticRoutes : []),
+
       ...beforeFilesRewrites,
 
       // Make sure to 404 for the /404 path itself
@@ -1067,7 +1077,10 @@ export async function serverBuild({
             },
           ]),
 
-      ...middleware.staticRoutes,
+      // while middleware was in beta the order came right before
+      // handle: 'filesystem' we maintain this for older versions
+      // to prevent a local/deploy mismatch
+      ...(!isCorrectMiddlewareOrder ? middleware.staticRoutes : []),
 
       // Next.js page lambdas, `static/` folder, reserved assets, and `public/`
       // folder

packages/next/src/utils.ts

@@ -244,9 +244,7 @@ export async function getRoutesManifest(
     });
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  const routesManifest: RoutesManifest = require(pathRoutesManifest);
-
+  const routesManifest: RoutesManifest = await fs.readJSON(pathRoutesManifest);
   // remove temporary array based routeKeys from v1/v2 of routes
   // manifest since it can result in invalid routes
   for (const route of routesManifest.dataRoutes || []) {
@@ -368,10 +366,10 @@ export async function getDynamicRoutes(
   let getSortedRoutes: ((normalizedPages: string[]) => string[]) | undefined;
 
   try {
-    ({ getRouteRegex, getSortedRoutes } = require(resolveFrom(
-      entryPath,
-      'next-server/dist/lib/router/utils'
-    )));
+    // NOTE: `eval('require')` is necessary to avoid bad transpilation to `__webpack_require__`
+    ({ getRouteRegex, getSortedRoutes } = eval('require')(
+      resolveFrom(entryPath, 'next-server/dist/lib/router/utils')
+    ));
     if (typeof getRouteRegex !== 'function') {
       getRouteRegex = undefined;
     }
@@ -379,10 +377,10 @@ export async function getDynamicRoutes(
 
   if (!getRouteRegex || !getSortedRoutes) {
     try {
-      ({ getRouteRegex, getSortedRoutes } = require(resolveFrom(
-        entryPath,
-        'next/dist/next-server/lib/router/utils'
-      )));
+      // NOTE: `eval('require')` is necessary to avoid bad transpilation to `__webpack_require__`
+      ({ getRouteRegex, getSortedRoutes } = eval('require')(
+        resolveFrom(entryPath, 'next/dist/next-server/lib/router/utils')
+      ));
       if (typeof getRouteRegex !== 'function') {
         getRouteRegex = undefined;
       }
@@ -536,9 +534,7 @@ export async function getImagesManifest(
     return undefined;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  const imagesManifest: NextImagesManifest = require(pathImagesManifest);
-  return imagesManifest;
+  return fs.readJson(pathImagesManifest);
 }
 
 type FileMap = { [page: string]: FileFsRef };
@@ -2145,10 +2141,12 @@ export async function getMiddlewareBundle({
   entryPath,
   outputDirectory,
   routesManifest,
+  isCorrectMiddlewareOrder,
 }: {
   entryPath: string;
   outputDirectory: string;
   routesManifest: RoutesManifest;
+  isCorrectMiddlewareOrder: boolean;
 }) {
   const middlewareManifest = await getMiddlewareManifest(
     entryPath,
@@ -2270,16 +2268,17 @@ export async function getMiddlewareBundle({
       const route: Route = {
         continue: true,
         src: worker.routeSrc,
-        ...(worker.type === 'middleware'
-          ? {
-              middlewarePath: shortPath,
-              override: true,
-            }
-          : {
-              dest: shortPath,
-            }),
       };
 
+      if (worker.type === 'function') {
+        route.dest = shortPath;
+      } else {
+        route.middlewarePath = shortPath;
+        if (isCorrectMiddlewareOrder) {
+          route.override = true;
+        }
+      }
+
       if (routesManifest.version > 3 && isDynamicRoute(worker.page)) {
         source.dynamicRouteMap.set(worker.page, route);
       } else {
@@ -2321,8 +2320,7 @@ export async function getMiddlewareManifest(
     return;
   }
 
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  return require(middlewareManifestPath);
+  return fs.readJSON(middlewareManifestPath);
 }
 
 /**

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

@@ -4,6 +4,8 @@ const cheerio = require('cheerio');
 const { check, deployAndTest } = require('../../utils');
 const fetch = require('../../../../../test/lib/deployment/fetch-retry');
 
+const ABSOLUTE_URL_PATTERN = /^https?:\/\//i;
+
 async function checkForChange(url, initialValue, hardError) {
   return check(
     async () => {
@@ -32,6 +34,13 @@ describe(`${__dirname.split(path.sep).pop()}`, () => {
   it('should deploy and pass probe checks', async () => {
     const info = await deployAndTest(__dirname);
     Object.assign(ctx, info);
+
+    if (!ABSOLUTE_URL_PATTERN.test(ctx.deploymentUrl)) {
+      const details = JSON.stringify(ctx);
+      throw new Error(
+        `Deployment did not result in an absolute deploymentUrl: ${details}`
+      );
+    }
   });
 
   it('should revalidate content properly from /', async () => {

packages/next/test/fixtures/00-middleware-nested/index.test.js

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

packages/next/test/fixtures/00-middleware-nested/next.config.js

@@ -0,0 +1,21 @@
+module.exports = {
+  redirects() {
+    return [
+      {
+        source: '/redirect-me',
+        destination: '/from-next-config',
+        permanent: false,
+      },
+    ];
+  },
+  rewrites() {
+    return {
+      beforeFiles: [
+        {
+          source: '/rewrite-before-files',
+          destination: '/somewhere',
+        },
+      ],
+    };
+  },
+};

packages/next/test/fixtures/00-middleware-nested/package.json

@@ -0,0 +1,11 @@
+{
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build"
+  },
+  "dependencies": {
+    "next": "12.1.6",
+    "react": "latest",
+    "react-dom": "latest"
+  }
+}

packages/next/test/fixtures/00-middleware-nested/pages/_middleware.js

@@ -0,0 +1,226 @@
+import { NextResponse } from 'next/server';
+
+const ALLOWED = ['allowed'];
+
+export function middleware(request) {
+  const url = request.nextUrl;
+  const pathname = url.pathname;
+
+  if (process.env.FOO) {
+    console.log(`Includes env variable ${process.env.FOO}`);
+  }
+
+  if (url.pathname === '/redirect-me') {
+    url.pathname = '/from-middleware';
+    return NextResponse.redirect(url);
+  }
+
+  if (url.pathname === '/next') {
+    return NextResponse.next();
+  }
+
+  if (url.pathname === '/version') {
+    return NextResponse.json({
+      enumerable: Object.keys(self).includes('VercelRuntime'),
+      version: self.VercelRuntime.version,
+    });
+  }
+
+  if (url.pathname === '/globals') {
+    const globalThisKeys = Object.keys(globalThis);
+    const globalKeys = globalThisKeys.reduce((acc, globalName) => {
+      const key = globalName.toString();
+      if (global[key]) acc.push(key);
+      return acc;
+    }, []);
+
+    const res = NextResponse.next();
+    res.headers.set(
+      'data',
+      JSON.stringify({ globals: globalKeys, globalThis: globalThisKeys })
+    );
+    return res;
+  }
+
+  if (url.pathname === '/log') {
+    console.log('hi there');
+    return;
+  }
+
+  if (url.pathname === '/logs') {
+    console.clear();
+    for (let i = 0; i < 3; i++) console.count();
+    console.count('test');
+    console.count('test');
+    console.dir({ hello: 'world' });
+    console.log('hello');
+    console.log('world');
+    return;
+  }
+
+  if (url.pathname === '/greetings') {
+    const data = { message: 'hello world!' };
+    const res = NextResponse.next();
+    res.headers.set('x-example', 'edge');
+    res.headers.set('data', JSON.stringify(data));
+    return res;
+  }
+
+  if (url.pathname === '/rewrite-me-to-about') {
+    url.pathname = '/about';
+    url.searchParams.set('middleware', 'foo');
+    return NextResponse.rewrite(url);
+  }
+
+  if (url.pathname === '/redirect-me-to-about') {
+    url.pathname = '/about';
+    url.searchParams.set('middleware', 'foo');
+    return Response.redirect(url);
+  }
+
+  if (url.pathname === '/rewrite-absolute') {
+    return NextResponse.rewrite('https://example.vercel.sh/foo?foo=bar');
+  }
+
+  if (url.pathname === '/rewrite-relative') {
+    url.pathname = '/foo';
+    url.searchParams.set('foo', 'bar');
+    return NextResponse.rewrite(url);
+  }
+
+  if (url.pathname === '/redirect-absolute') {
+    return Response.redirect('https://vercel.com');
+  }
+
+  if (url.pathname === '/redirect-301') {
+    url.pathname = '/greetings';
+    return NextResponse.redirect(url, 301);
+  }
+
+  if (url.pathname === '/reflect') {
+    const res = NextResponse.next();
+    res.headers.set(
+      'data',
+      JSON.stringify({
+        geo: request.geo,
+        headers: Object.fromEntries(request.headers),
+        ip: request.ip,
+        method: request.method,
+        nextUrl: {
+          hash: request.nextUrl.hash,
+          hostname: request.nextUrl.hostname,
+          pathname: request.nextUrl.pathname,
+          port: request.nextUrl.port,
+          protocol: request.nextUrl.protocol,
+          search: request.nextUrl.search,
+        },
+        url: request.url,
+      })
+    );
+    return res;
+  }
+
+  if (url.pathname === '/stream-response') {
+    const { readable, writable } = new TransformStream();
+    const waitUntil = (async () => {
+      const enc = new TextEncoder();
+      const writer = writable.getWriter();
+      writer.write(enc.encode('this is a streamed '));
+      writer.write(enc.encode('response '));
+      return writer.close();
+    })();
+
+    return {
+      waitUntil,
+      response: NextResponse.next(),
+    };
+  }
+
+  if (url.pathname === '/throw-error') {
+    const error = new Error('oh no!');
+    console.log('This is not worker.js');
+    console.error(error);
+    return new Promise((_, reject) => reject(error));
+  }
+
+  if (url.pathname === '/throw-error-internal') {
+    function myFunctionName() {
+      throw new Error('Oh no!');
+    }
+
+    function anotherFunction() {
+      return myFunctionName();
+    }
+
+    try {
+      anotherFunction();
+    } catch (err) {
+      console.error(err);
+    }
+
+    return new Promise((_, reject) => reject(new Error('oh no!')));
+  }
+
+  if (url.pathname === '/unhandledrejection') {
+    Promise.reject(new TypeError('captured unhandledrejection error.'));
+    return NextResponse.next();
+  }
+
+  if (pathname.startsWith('/query-params')) {
+    if (pathname.endsWith('/clear')) {
+      const strategy =
+        url.searchParams.get('strategy') === 'rewrite' ? 'rewrite' : 'redirect';
+
+      for (const key of [...url.searchParams.keys()]) {
+        if (!ALLOWED.includes(key)) {
+          url.searchParams.delete(key);
+        }
+      }
+
+      const newPath = url.pathname.replace(/\/clear$/, '');
+      url.pathname = newPath;
+
+      if (strategy === 'redirect') {
+        return NextResponse.redirect(url);
+      } else {
+        return NextResponse.rewrite(url);
+      }
+    }
+
+    const obj = Object.fromEntries([...url.searchParams.entries()]);
+
+    const res = NextResponse.next();
+    res.headers.set('data', JSON.stringify(obj));
+    return res;
+  }
+
+  if (pathname.startsWith('/home')) {
+    if (!request.cookies.bucket) {
+      const bucket = Math.random() >= 0.5 ? 'a' : 'b';
+      url.pathname = `/home/${bucket}`;
+      const response = NextResponse.rewrite(url);
+      response.cookie('bucket', bucket);
+      return response;
+    }
+
+    url.pathname = `/home/${request.cookies.bucket}`;
+    return NextResponse.rewrite(url);
+  }
+
+  if (pathname.startsWith('/fetch-subrequest')) {
+    const destinationUrl =
+      url.searchParams.get('url') || 'https://example.vercel.sh';
+    return fetch(destinationUrl, { headers: request.headers });
+  }
+
+  if (url.pathname === '/dynamic/greet') {
+    const res = NextResponse.next();
+    res.headers.set(
+      'data',
+      JSON.stringify({
+        message: url.searchParams.get('greeting') || 'Hi friend',
+      })
+    );
+    return res;
+  }
+}

packages/next/test/fixtures/00-middleware-nested/pages/about.js

@@ -0,0 +1,16 @@
+export default function Main({ message, middleware }) {
+  return (
+    <div>
+      <h1 className="title">About Page</h1>
+      <p className={message}>{message}</p>
+      <p className="middleware">{middleware}</p>
+    </div>
+  );
+}
+
+export const getServerSideProps = ({ query }) => ({
+  props: {
+    middleware: query.middleware || '',
+    message: query.message || '',
+  },
+});

packages/next/test/fixtures/00-middleware-nested/pages/blog/_middleware.js

@@ -0,0 +1,6 @@
+import { NextResponse } from 'next/server';
+
+export const middleware = async () => {
+  // Just chillin doing nothing
+  return NextResponse.next();
+};

packages/next/test/fixtures/00-middleware-nested/pages/blog/index.js

@@ -0,0 +1,10 @@
+export default function Page() {
+  return <p>blog</p>;
+}
+
+export function getStaticProps() {
+  return {
+    props: {},
+    revalidate: 1,
+  };
+}

packages/next/test/fixtures/00-middleware-nested/pages/dynamic/[id]/index.js

@@ -0,0 +1,3 @@
+export default function Index() {
+  return <p className="title">Dynamic route</p>;
+}

packages/next/test/fixtures/00-middleware-nested/pages/fetch-subrequest/index.js

@@ -0,0 +1,16 @@
+export default function Main({ message, middleware }) {
+  return (
+    <div>
+      <h1 className="title">About Page</h1>
+      <p className={message}>{message}</p>
+      <p className="middleware">{middleware}</p>
+    </div>
+  );
+}
+
+export const getServerSideProps = ({ query }) => ({
+  props: {
+    middleware: query.middleware || '',
+    message: query.message || '',
+  },
+});

packages/next/test/fixtures/00-middleware-nested/pages/home/a.js

@@ -0,0 +1,3 @@
+export default function Home() {
+  return <h1>Home A</h1>;
+}

packages/next/test/fixtures/00-middleware-nested/pages/home/b.js

@@ -0,0 +1,3 @@
+export default function Home() {
+  return <h1>Home B</h1>;
+}

packages/next/test/fixtures/00-middleware-nested/pages/index.js

@@ -0,0 +1,81 @@
+import Link from 'next/link';
+
+export default function Index() {
+  return (
+    <div>
+      <h1>Demo</h1>
+      <ul>
+        <li>
+          <Link href="/home">
+            <a>A/B Testing</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/rewrite-me-to-about">
+            <a>Rewrite to existing page</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/redirect-me-to-about">
+            <a>Redirect to existing page</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/rewrite">
+            <a>Rewrite to external site</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/redirect">
+            <a>Redirect to external site</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/greetings">
+            <a>Respond with JSON</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/stream-response">
+            <a>Respond with Stream</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/dynamic/greet?greeting=hola">
+            <a>Dynamic Nested Middleware</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/eval">
+            <a>do a eval</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/logs">
+            <a>print some logs</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/fetch">
+            <a>perform a fetch</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/throw-error">
+            <a>throw an error</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/throw-error-internal">
+            <a>throw a controller error</a>
+          </Link>
+        </li>
+        <li>
+          <Link href="/timeout">
+            <a>simulate timeout</a>
+          </Link>
+        </li>
+      </ul>
+    </div>
+  );
+}

packages/next/test/fixtures/00-middleware-nested/vercel.json

@@ -0,0 +1,16 @@
+{
+  "version": 2,
+  "builds": [{ "src": "package.json", "use": "@vercel/next" }],
+  "probes": [
+    {
+      "path": "/redirect-me",
+      "status": 307,
+      "responseHeaders": {
+        "Location": "/from-middleware/"
+      },
+      "fetchOptions": {
+        "redirect": "manual"
+      }
+    }
+  ]
+}

packages/next/test/fixtures/00-middleware/middleware.js

@@ -47,6 +47,11 @@ export function middleware(request) {
     return;
   }
 
+  if (url.pathname === '/somewhere') {
+    url.pathname = '/from-middleware';
+    return NextResponse.redirect(url);
+  }
+
   if (url.pathname === '/logs') {
     console.clear();
     for (let i = 0; i < 3; i++) console.count();

packages/next/test/fixtures/00-middleware/vercel.json

@@ -11,6 +11,23 @@
       "fetchOptions": {
         "redirect": "manual"
       }
+    },
+    {
+      "path": "/rewrite-before-files",
+      "status": 404,
+      "fetchOptions": {
+        "redirect": "manual"
+      }
+    },
+    {
+      "path": "/somewhere",
+      "status": 307,
+      "responseHeaders": {
+        "Location": "/from-middleware/"
+      },
+      "fetchOptions": {
+        "redirect": "manual"
+      }
     }
   ]
 }

packages/next/test/integration/middleware.test.ts

@@ -45,7 +45,7 @@ describe('Middleware simple project', () => {
     expect(typeof beforeFilesIndex).toBe('number');
     expect(redirectIndex).toBeLessThan(middlewareIndex);
     expect(redirectIndex).toBeLessThan(beforeFilesIndex);
-    expect(beforeFilesIndex).toBeLessThan(middlewareIndex);
+    expect(middlewareIndex).toBeLessThan(beforeFilesIndex);
     expect(middlewareIndex).toBeLessThan(handleFileSystemIndex);
   });
 

packages/next/tsconfig.json

@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["esnext"],
-    "target": "es2018",
+    "lib": ["ES2020"],
+    "target": "ES2020",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": false,

packages/node-bridge/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/node-bridge",
-  "version": "2.2.2",
+  "version": "3.0.0",
   "license": "MIT",
   "main": "./index.js",
   "repository": {

packages/node-bridge/tsconfig.json

@@ -2,11 +2,13 @@
   "compilerOptions": {
     "allowJs": true,
     "checkJs": true,
-    "lib": ["esnext"],
+    "lib": ["ES2020"],
     "noEmit": true,
     "noImplicitReturns": true,
     "strict": true,
-    "declaration": true
+    "target": "ES2020",
+    "declaration": true,
+    "module": "commonjs"
   },
   "include": ["helpers.ts", "bridge.js", "launcher.js"],
   "exclude": ["node_modules"]

packages/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/node",
-  "version": "1.15.4",
+  "version": "2.1.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/node-js",
@@ -31,7 +31,7 @@
   },
   "dependencies": {
     "@types/node": "*",
-    "@vercel/node-bridge": "2.2.2",
+    "@vercel/node-bridge": "3.0.0",
     "ts-node": "8.9.1",
     "typescript": "4.3.4"
   },
@@ -45,9 +45,10 @@
     "@types/etag": "1.8.0",
     "@types/jest": "27.4.1",
     "@types/test-listen": "1.1.0",
-    "@vercel/build-utils": "3.1.1",
+    "@vercel/build-utils": "4.1.0",
     "@vercel/ncc": "0.24.0",
     "@vercel/nft": "0.19.1",
+    "@vercel/static-config": "2.0.1",
     "content-type": "1.0.4",
     "cookie": "0.4.0",
     "etag": "1.8.1",

packages/node/src/index.ts

@@ -16,18 +16,15 @@ import {
   sep,
   parse as parsePath,
 } from 'path';
+import { Project } from 'ts-morph';
 import once from '@tootallnate/once';
 import { nodeFileTrace } from '@vercel/nft';
 import {
-  File,
-  Files,
-  Meta,
-  Config,
-  StartDevServerOptions,
   glob,
   download,
   FileBlob,
   FileFsRef,
+  EdgeFunction,
   NodejsLambda,
   runNpmInstall,
   runPackageJsonScript,
@@ -37,11 +34,20 @@ import {
   debug,
   isSymbolicLink,
   walkParentDirs,
+} from '@vercel/build-utils';
+import type {
+  File,
+  Files,
+  Meta,
+  Config,
+  StartDevServerOptions,
   BuildV3,
   PrepareCache,
   StartDevServer,
   NodeVersion,
+  BuildResultV3,
 } from '@vercel/build-utils';
+import { getConfig } from '@vercel/static-config';
 
 import { Register, register } from './typescript';
 
@@ -69,6 +75,8 @@ function isPortInfo(v: any): v is PortInfo {
   return v && typeof v.port === 'number';
 }
 
+const ALLOWED_RUNTIMES = ['nodejs', 'experimental-edge'];
+
 const require_ = eval('require');
 
 const tscPath = resolve(dirname(require_.resolve('typescript')), '../bin/tsc');
@@ -187,7 +195,10 @@ async function compile(
         if (cached === null) return null;
         try {
           let source: string | Buffer = readFileSync(fsPath);
-          if (fsPath.endsWith('.ts') || fsPath.endsWith('.tsx')) {
+          if (
+            (fsPath.endsWith('.ts') && !fsPath.endsWith('.d.ts')) ||
+            fsPath.endsWith('.tsx')
+          ) {
             source = compileTypeScript(fsPath, source.toString());
           }
           const { mode } = lstatSync(fsPath);
@@ -362,20 +373,52 @@ export const build: BuildV3 = async ({
   );
   debug(`Trace complete [${Date.now() - traceTime}ms]`);
 
-  const shouldAddHelpers = !(
-    config.helpers === false || process.env.NODEJS_HELPERS === '0'
-  );
+  const project = new Project();
+  const staticConfig = getConfig(project, entrypointPath);
 
-  const lambda = new NodejsLambda({
-    files: preparedFiles,
-    handler: renameTStoJS(relative(baseDir, entrypointPath)),
-    runtime: nodeVersion.runtime,
-    shouldAddHelpers,
-    shouldAddSourcemapSupport,
-    awsLambdaHandler,
-  });
+  let output: BuildResultV3['output'] | undefined;
+  const handler = renameTStoJS(relative(baseDir, entrypointPath));
 
-  return { output: lambda };
+  if (staticConfig?.runtime) {
+    if (!ALLOWED_RUNTIMES.includes(staticConfig.runtime)) {
+      throw new Error(
+        `Unsupported "runtime" property in \`config\`: ${JSON.stringify(
+          staticConfig.runtime
+        )} (must be one of: ${JSON.stringify(ALLOWED_RUNTIMES)})`
+      );
+    }
+    if (staticConfig.runtime === 'experimental-edge') {
+      const name = config.zeroConfig
+        ? handler.substring(0, handler.length - 3)
+        : handler;
+      output = new EdgeFunction({
+        entrypoint: handler,
+        files: preparedFiles,
+
+        // TODO: remove - these two properties should not be required
+        name,
+        deploymentTarget: 'v8-worker',
+      });
+    }
+  }
+
+  if (!output) {
+    // "nodejs" runtime is the default
+    const shouldAddHelpers = !(
+      config.helpers === false || process.env.NODEJS_HELPERS === '0'
+    );
+
+    output = new NodejsLambda({
+      files: preparedFiles,
+      handler,
+      runtime: nodeVersion.runtime,
+      shouldAddHelpers,
+      shouldAddSourcemapSupport,
+      awsLambdaHandler,
+    });
+  }
+
+  return { output };
 };
 
 export const prepareCache: PrepareCache = ({ repoRootPath, workPath }) => {

packages/node/src/typescript.ts

@@ -450,7 +450,6 @@ export function fixConfig(
   delete config.compilerOptions.tsBuildInfoFile;
   delete config.compilerOptions.incremental;
 
-  // Target esnext output by default (instead of ES3).
   // This will prevent TS from polyfill/downlevel emit.
   if (config.compilerOptions.target === undefined) {
     // See https://github.com/tsconfig/bases/tree/main/bases

packages/node/test/fixtures/05-ts-declaration-asset/index.ts

@@ -0,0 +1,9 @@
+import { join } from 'path';
+import { readFileSync } from 'fs';
+
+const filePath = join(__dirname, 'test.d.ts');
+const fileContent = readFileSync(filePath, 'utf8');
+
+export default function handler(_req: any, res: any) {
+  res.end(fileContent);
+}

packages/node/test/fixtures/05-ts-declaration-asset/package.json

@@ -0,0 +1,6 @@
+{
+  "private": true,
+  "dependencies": {
+    "@types/node": "^16.0.0"
+  }
+}

packages/node/test/fixtures/05-ts-declaration-asset/test.d.ts

@@ -0,0 +1,3 @@
+declare namespace Test {
+  // example .d.ts file
+}

packages/node/test/fixtures/05-ts-declaration-asset/vercel.json

@@ -0,0 +1,10 @@
+{
+  "version": 2,
+  "builds": [{ "src": "index.ts", "use": "@vercel/node" }],
+  "probes": [
+    {
+      "path": "/",
+      "mustContain": "declare namespace Test"
+    }
+  ]
+}

packages/node/test/fixtures/61-edge-function/api/edge.js

@@ -0,0 +1,7 @@
+export const config = {
+  runtime: 'experimental-edge',
+};
+
+export default req => {
+  return new Response(`RANDOMNESS_PLACEHOLDER:edge`);
+};

packages/node/test/fixtures/61-edge-function/vercel.json

@@ -0,0 +1,9 @@
+{
+  "builds": [{ "src": "api/**/*.js", "use": "@vercel/node" }],
+  "probes": [
+    {
+      "path": "/api/edge.js",
+      "mustContain": "RANDOMNESS_PLACEHOLDER:edge"
+    }
+  ]
+}

packages/node/tsconfig.json

@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["esnext"],
-    "target": "es2018",
+    "lib": ["ES2020"],
+    "target": "ES2020",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": false,