Publish Canary

- @vercel/build-utils@4.1.1-canary.0
 - vercel@25.1.1-canary.0
 - @vercel/client@12.0.2-canary.0
 - @vercel/go@2.0.2-canary.0
 - @vercel/next@3.0.2-canary.0
 - @vercel/node@2.1.1-canary.0
 - @vercel/python@3.0.2-canary.0
 - @vercel/redwood@1.0.2-canary.0
 - @vercel/remix@1.0.2-canary.0
 - @vercel/ruby@1.3.10-canary.0
 - @vercel/static-build@1.0.2-canary.0

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "4.0.0",
+  "version": "4.1.1-canary.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",
@@ -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/detect-builders.ts

@@ -23,7 +23,7 @@ interface ErrorResponse {
 }
 
 interface Options {
-  tag?: 'canary' | 'latest' | string;
+  tag?: string;
   functions?: BuilderFunctions;
   ignoreBuildScript?: boolean;
   projectSettings?: ProjectSettings;
@@ -278,7 +278,7 @@ export async function detectBuilders(
       // and package.json can be served as static files
       frontendBuilder = {
         use: '@vercel/static',
-        src: '!{api/**,package.json}',
+        src: '!{api/**,package.json,middleware.[jt]s}',
         config: {
           zeroConfig: true,
         },
@@ -355,7 +355,16 @@ function maybeGetApiBuilder(
   apiMatches: Builder[],
   options: Options
 ) {
-  if (!fileName.startsWith('api/')) {
+  const middleware =
+    fileName === 'middleware.js' || fileName === 'middleware.ts';
+
+  // Root-level Middleware file is handled by `@vercel/next`, so don't
+  // schedule a separate Builder when "nextjs" framework is selected
+  if (middleware && options.projectSettings?.framework === 'nextjs') {
+    return null;
+  }
+
+  if (!(fileName.startsWith('api/') || middleware)) {
     return null;
   }
 
@@ -381,7 +390,7 @@ function maybeGetApiBuilder(
 
   const { fnPattern, func } = getFunction(fileName, options);
 
-  const use = (func && func.runtime) || (match && match.use);
+  const use = func?.runtime || match?.use;
 
   if (!use) {
     return null;
@@ -389,6 +398,10 @@ function maybeGetApiBuilder(
 
   const config: Config = { zeroConfig: true };
 
+  if (middleware) {
+    config.middleware = true;
+  }
+
   if (fnPattern && func) {
     config.functions = { [fnPattern]: func };
 
@@ -428,6 +441,7 @@ function getApiMatches() {
   const config = { zeroConfig: true };
 
   return [
+    { src: 'middleware.[jt]s', use: `@vercel/node`, config },
     { src: 'api/**/*.js', use: `@vercel/node`, config },
     { src: 'api/**/*.mjs', use: `@vercel/node`, config },
     { src: 'api/**/*.ts', use: `@vercel/node`, config },

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/get-project-paths.ts

@@ -0,0 +1,60 @@
+import { detectFramework } from './detect-framework';
+import { DetectorFilesystem } from './detectors/filesystem';
+import frameworks from '@vercel/frameworks';
+
+const MAX_DEPTH_TRAVERSE = 3;
+
+export interface GetProjectPathsOptions {
+  fs: DetectorFilesystem;
+  path?: string;
+  skipPaths?: string[];
+  depth?: number;
+}
+
+export type ProjectPath = string;
+
+export const getProjectPaths = async ({
+  fs,
+  path,
+  skipPaths,
+  depth = MAX_DEPTH_TRAVERSE,
+}: GetProjectPathsOptions): Promise<ProjectPath[]> => {
+  if (depth === 0) return [];
+
+  const allPaths: Array<ProjectPath> = [];
+  const topPath: string = path ?? './';
+
+  if (path && skipPaths?.includes(path)) {
+    return allPaths;
+  }
+  const framework = await detectFramework({
+    fs: fs.chdir(topPath),
+    frameworkList: frameworks,
+  });
+
+  if (framework !== null) allPaths.push(topPath);
+
+  if (depth > 1) {
+    const directoryContents = await fs.readdir(topPath);
+    const childDirectories = directoryContents.filter(
+      stat => stat.type === 'dir' && !skipPaths?.includes(stat.path)
+    );
+
+    const paths = (
+      await Promise.all(
+        childDirectories.map(({ path }) => {
+          return getProjectPaths({
+            fs,
+            path,
+            depth: depth - 1,
+            skipPaths,
+          });
+        })
+      )
+    ).flat();
+
+    return [...paths, ...allPaths];
+  }
+
+  return allPaths;
+};

packages/build-utils/src/index.ts

@@ -88,6 +88,7 @@ export {
 } from './detect-builders';
 export { detectFileSystemAPI } from './detect-file-system-api';
 export { detectFramework } from './detect-framework';
+export { getProjectPaths } from './get-project-paths';
 export { DetectorFilesystem } from './detectors/filesystem';
 export { readConfigFile } from './fs/read-config-file';
 export { normalizePath } from './fs/normalize-path';
@@ -117,5 +118,14 @@ 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

@@ -428,7 +428,9 @@ export interface BuildResultV2Typical {
 export type BuildResultV2 = BuildResultV2Typical | BuildResultBuildOutput;
 
 export interface BuildResultV3 {
-  output: Lambda;
+  // TODO: use proper `Route` type from `routing-utils` (perhaps move types to a common package)
+  routes?: any[];
+  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/non-deployed-fixtures/32-monorepo-highly-nested/src/backend/app-three/package.json

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

packages/build-utils/test/non-deployed-fixtures/32-monorepo-highly-nested/src/backend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "backend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/32-monorepo-highly-nested/src/frontend/app-one/package.json

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

packages/build-utils/test/non-deployed-fixtures/32-monorepo-highly-nested/src/frontend/app-two/package.json

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

packages/build-utils/test/non-deployed-fixtures/32-monorepo-highly-nested/src/frontend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "frontend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/33-hybrid-monorepo/backend/app-three/package.json

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

packages/build-utils/test/non-deployed-fixtures/33-hybrid-monorepo/backend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "backend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/33-hybrid-monorepo/frontend/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/non-deployed-fixtures/33-hybrid-monorepo/frontend/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/non-deployed-fixtures/33-hybrid-monorepo/frontend/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "21-npm-workspaces",
+  "version": "1.0.0",
+  "private": true,
+  "workspaces": [
+    "a",
+    "b"
+  ]
+}

packages/build-utils/test/non-deployed-fixtures/34-monorepo-no-workspaces/backend/app-three/package.json

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

packages/build-utils/test/non-deployed-fixtures/34-monorepo-no-workspaces/backend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "backend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/34-monorepo-no-workspaces/frontend/app-one/package.json

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

packages/build-utils/test/non-deployed-fixtures/34-monorepo-no-workspaces/frontend/app-two/package.json

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

packages/build-utils/test/non-deployed-fixtures/34-monorepo-no-workspaces/frontend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "frontend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/35-no-monorepo/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "app-one",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
+}

packages/build-utils/test/non-deployed-fixtures/36-monorepo-some-nested/frontend/app-one/app-three/package.json

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

packages/build-utils/test/non-deployed-fixtures/36-monorepo-some-nested/frontend/app-two/package.json

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

packages/build-utils/test/non-deployed-fixtures/36-monorepo-some-nested/frontend/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "frontend",
+  "license": "MIT",
+  "version": "0.1.0"
+}

packages/build-utils/test/non-deployed-fixtures/37-project-depth-one-level/package.json

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

packages/build-utils/test/unit.builds-and-routes-detector.test.ts

@@ -78,7 +78,7 @@ describe('Test `detectBuilders`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/users.js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
     expect(errors).toBe(null);
   });
@@ -89,7 +89,7 @@ describe('Test `detectBuilders`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/[endpoint].js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
     expect(errors).toBe(null);
   });
@@ -144,7 +144,7 @@ describe('Test `detectBuilders`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/endpoint.js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
   });
 
@@ -347,7 +347,7 @@ describe('Test `detectBuilders`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/index.ts');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
   });
 
   it('functions with nextjs', async () => {
@@ -1010,7 +1010,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/users.js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
     expect(errors).toBe(null);
 
@@ -1032,7 +1032,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/[endpoint].js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
     expect(errors).toBe(null);
   });
@@ -1258,7 +1258,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/endpoint.js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
 
     expect(defaultRoutes!.length).toBe(2);
@@ -1288,7 +1288,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/version.js');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(builders!.length).toBe(2);
 
     expect(defaultRoutes!.length).toBe(2);
@@ -1567,7 +1567,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders![0].use).toBe('@vercel/node');
     expect(builders![0].src).toBe('api/index.ts');
     expect(builders![1].use).toBe('@vercel/static');
-    expect(builders![1].src).toBe('!{api/**,package.json}');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
     expect(errorRoutes!.length).toBe(1);
     expect((errorRoutes![0] as Source).status).toBe(404);
   });
@@ -2228,6 +2228,55 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(builders).toBe(null);
     expect(errors).toBe(null);
   });
+
+  it('no package.json + no build + root-level "middleware.js"', async () => {
+    const files = ['middleware.js', 'index.html', 'web/middleware.js'];
+    const { builders, errors } = await detectBuilders(files, null, {
+      featHandleMiss,
+    });
+    expect(builders![0].use).toBe('@vercel/node');
+    expect(builders![0].src).toBe('middleware.js');
+    expect(builders![0].config?.middleware).toEqual(true);
+    expect(builders![1].use).toBe('@vercel/static');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
+    expect(builders!.length).toBe(2);
+    expect(errors).toBe(null);
+  });
+
+  it('no package.json + no build + root-level "middleware.ts"', async () => {
+    const files = ['middleware.ts', 'index.html', 'web/middleware.js'];
+    const { builders, errors } = await detectBuilders(files, null, {
+      featHandleMiss,
+    });
+    expect(builders![0].use).toBe('@vercel/node');
+    expect(builders![0].src).toBe('middleware.ts');
+    expect(builders![0].config?.middleware).toEqual(true);
+    expect(builders![1].use).toBe('@vercel/static');
+    expect(builders![1].src).toBe('!{api/**,package.json,middleware.[jt]s}');
+    expect(builders!.length).toBe(2);
+    expect(errors).toBe(null);
+  });
+
+  it('should not add middleware builder when "nextjs" framework is selected', async () => {
+    const files = ['package.json', 'pages/index.ts', 'middleware.ts'];
+    const projectSettings = {
+      framework: 'nextjs',
+    };
+    const { builders } = await detectBuilders(files, null, {
+      projectSettings,
+      featHandleMiss,
+    });
+    expect(builders).toEqual([
+      {
+        use: '@vercel/next',
+        src: 'package.json',
+        config: {
+          zeroConfig: true,
+          framework: projectSettings.framework,
+        },
+      },
+    ]);
+  });
 });
 
 it('Test `detectRoutes`', async () => {

packages/build-utils/test/unit.get-project-paths.test.ts

@@ -0,0 +1,70 @@
+import path from 'path';
+import { normalizePath } from '../src';
+import { getProjectPaths, ProjectPath } from '../src/get-project-paths';
+import { FixtureFilesystem } from './utils/fixture-filesystem';
+
+describe.each<{
+  fixturePath: string;
+  resultPaths: ProjectPath[];
+  skipPaths?: ProjectPath[];
+  readdirCalls: number;
+}>([
+  {
+    fixturePath: '32-monorepo-highly-nested',
+    resultPaths: [],
+    readdirCalls: 2,
+  },
+  {
+    fixturePath: '33-hybrid-monorepo',
+    resultPaths: ['backend/app-three'],
+    readdirCalls: 2,
+    skipPaths: ['frontend'],
+  },
+  {
+    fixturePath: '34-monorepo-no-workspaces',
+    resultPaths: ['backend/app-three', 'frontend/app-one', 'frontend/app-two'],
+    readdirCalls: 3,
+  },
+  {
+    fixturePath: '35-no-monorepo',
+    resultPaths: [],
+    readdirCalls: 1,
+  },
+  {
+    fixturePath: '36-monorepo-some-nested',
+    resultPaths: ['frontend/app-two'],
+    readdirCalls: 2,
+  },
+  {
+    fixturePath: '37-project-depth-one-level',
+    resultPaths: ['./'],
+    readdirCalls: 1,
+  },
+])(
+  '`getProjectPaths()`',
+  ({ resultPaths, readdirCalls, fixturePath, skipPaths }) => {
+    const testName =
+      resultPaths.length > 0
+        ? `should detect ${resultPaths.join()} project${
+            resultPaths.length > 1 ? 's' : ''
+          } for ${fixturePath}`
+        : `should not detect any path for ${fixturePath}`;
+
+    it(testName, async () => {
+      const fixture = path.join(
+        __dirname,
+        'non-deployed-fixtures',
+        fixturePath
+      );
+      const fs = new FixtureFilesystem(fixture);
+      const mockReaddir = jest.fn().mockImplementation(fs.readdir);
+      const mockHasPath = jest.fn().mockImplementation(fs.hasPath);
+      fs.readdir = mockReaddir;
+      fs.hasPath = mockHasPath;
+      const actualPaths = await getProjectPaths({ fs, skipPaths });
+      const normalizedPaths = actualPaths.map(path => normalizePath(path));
+      expect(normalizedPaths).toEqual(resultPaths);
+      expect(fs.readdir).toHaveBeenCalledTimes(readdirCalls);
+    });
+  }
+);

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/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "25.0.0",
+  "version": "25.1.1-canary.0",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -42,15 +42,15 @@
     "node": ">= 14"
   },
   "dependencies": {
-    "@vercel/build-utils": "4.0.0",
-    "@vercel/go": "2.0.0",
-    "@vercel/next": "3.0.0",
-    "@vercel/node": "2.0.0",
-    "@vercel/python": "3.0.0",
-    "@vercel/redwood": "1.0.0",
-    "@vercel/remix": "1.0.0",
-    "@vercel/ruby": "1.3.8",
-    "@vercel/static-build": "1.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
+    "@vercel/go": "2.0.2-canary.0",
+    "@vercel/next": "3.0.2-canary.0",
+    "@vercel/node": "2.1.1-canary.0",
+    "@vercel/python": "3.0.2-canary.0",
+    "@vercel/redwood": "1.0.2-canary.0",
+    "@vercel/remix": "1.0.2-canary.0",
+    "@vercel/ruby": "1.3.10-canary.0",
+    "@vercel/static-build": "1.0.2-canary.0",
     "update-notifier": "5.1.0"
   },
   "devDependencies": {
@@ -94,7 +94,7 @@
     "@types/which": "1.3.2",
     "@types/write-json-file": "2.2.1",
     "@types/yauzl-promise": "2.1.0",
-    "@vercel/client": "12.0.0",
+    "@vercel/client": "12.0.2-canary.0",
     "@vercel/frameworks": "1.0.1",
     "@vercel/ncc": "0.24.0",
     "@zeit/fun": "0.11.2",

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,
@@ -100,6 +101,7 @@ export default async function main(client: Client): Promise<number> {
   const argv = getArgs(client.argv.slice(2), {
     '--cwd': String,
     '--prod': Boolean,
+    '--yes': Boolean,
   });
 
   if (argv['--help']) {
@@ -113,42 +115,53 @@ export default async function main(client: Client): Promise<number> {
   }
   const cwd = process.cwd();
 
+  // Build `target` influences which environment variables will be used
+  const target = argv['--prod'] ? 'production' : 'preview';
+  const yes = Boolean(argv['--yes']);
+
   // TODO: read project settings from the API, fall back to local `project.json` if that fails
 
   // Read project settings, and pull them from Vercel if necessary
   let project = await readProjectSettings(join(cwd, VERCEL_DIR));
   const isTTY = process.stdin.isTTY;
   while (!project?.settings) {
-    if (!isTTY) {
-      client.output.print(
-        `No Project Settings found locally. Run ${cli.getCommandName(
-          'pull --yes'
-        )} to retreive them.`
-      );
-      return 1;
-    }
+    let confirmed = yes;
+    if (!confirmed) {
+      if (!isTTY) {
+        client.output.print(
+          `No Project Settings found locally. Run ${cli.getCommandName(
+            'pull --yes'
+          )} to retreive them.`
+        );
+        return 1;
+      }
 
-    const confirmed = await confirm(
-      `No Project Settings found locally. Run ${cli.getCommandName(
-        'pull'
-      )} for retrieving them?`,
-      true
-    );
+      confirmed = await confirm(
+        `No Project Settings found locally. Run ${cli.getCommandName(
+          'pull'
+        )} for retrieving them?`,
+        true
+      );
+    }
     if (!confirmed) {
       client.output.print(`Aborted. No Project Settings retrieved.\n`);
       return 0;
     }
-    client.argv = [];
+    const { argv: originalArgv } = client;
+    client.argv = [
+      ...originalArgv.slice(0, 2),
+      'pull',
+      `--environment`,
+      target,
+    ];
     const result = await pull(client);
     if (result !== 0) {
       return result;
     }
+    client.argv = originalArgv;
     project = await readProjectSettings(join(cwd, VERCEL_DIR));
   }
 
-  // Build `target` influences which environment variables will be used
-  const target = argv['--prod'] ? 'production' : 'preview';
-
   // TODO: load env vars from the API, fall back to local files if that fails
 
   const envPath = await checkExists([
@@ -178,7 +191,7 @@ 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 || {} });
@@ -266,19 +279,20 @@ 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,
@@ -356,6 +370,7 @@ 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,
@@ -387,7 +402,7 @@ 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) {
@@ -445,7 +460,7 @@ 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/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/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/middleware/.vercel/project.json

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

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

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

packages/cli/test/fixtures/unit/commands/build/middleware/middleware.js

@@ -0,0 +1 @@
+export default req => new Response('middleware');

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-pull/.vercel/project.json

@@ -0,0 +1,4 @@
+{
+  "projectId": "vercel-pull-next",
+  "orgId": "team_dummy"
+}

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

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

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/unit/commands/build.test.ts

@@ -0,0 +1,374 @@
+import ms from 'ms';
+import fs from 'fs-extra';
+import { join } from 'path';
+import build from '../../../src/commands/build';
+import { client } from '../../mocks/client';
+import { defaultProject, useProject } from '../../mocks/project';
+import { useTeams } from '../../mocks/team';
+import { useUser } from '../../mocks/user';
+
+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,middleware.[jt]s}',
+            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,middleware.[jt]s}',
+            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;
+    }
+  });
+
+  it('should pull "preview" env vars by default', async () => {
+    const cwd = fixture('static-pull');
+    useUser();
+    useTeams('team_dummy');
+    useProject({
+      ...defaultProject,
+      id: 'vercel-pull-next',
+      name: 'vercel-pull-next',
+    });
+    const envFilePath = join(cwd, '.vercel', '.env.preview.local');
+    const projectJsonPath = join(cwd, '.vercel', 'project.json');
+    const originalProjectJson = await fs.readJSON(
+      join(cwd, '.vercel/project.json')
+    );
+    try {
+      process.chdir(cwd);
+      client.setArgv('build', '--yes');
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      const previewEnv = await fs.readFile(envFilePath, 'utf8');
+      const envFileHasPreviewEnv = previewEnv.includes(
+        'REDIS_CONNECTION_STRING'
+      );
+      expect(envFileHasPreviewEnv).toBeTruthy();
+    } finally {
+      await fs.remove(envFilePath);
+      await fs.writeJSON(projectJsonPath, originalProjectJson, { spaces: 2 });
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
+  it('should pull "production" env vars with `--prod`', async () => {
+    const cwd = fixture('static-pull');
+    useUser();
+    useTeams('team_dummy');
+    useProject({
+      ...defaultProject,
+      id: 'vercel-pull-next',
+      name: 'vercel-pull-next',
+    });
+    const envFilePath = join(cwd, '.vercel', '.env.production.local');
+    const projectJsonPath = join(cwd, '.vercel', 'project.json');
+    const originalProjectJson = await fs.readJSON(
+      join(cwd, '.vercel/project.json')
+    );
+    try {
+      process.chdir(cwd);
+      client.setArgv('build', '--yes', '--prod');
+      const exitCode = await build(client);
+      expect(exitCode).toEqual(0);
+
+      const prodEnv = await fs.readFile(envFilePath, 'utf8');
+      const envFileHasProductionEnv1 = prodEnv.includes(
+        'REDIS_CONNECTION_STRING'
+      );
+      expect(envFileHasProductionEnv1).toBeTruthy();
+      const envFileHasProductionEnv2 = prodEnv.includes(
+        'SQL_CONNECTION_STRING'
+      );
+      expect(envFileHasProductionEnv2).toBeTruthy();
+    } finally {
+      await fs.remove(envFilePath);
+      await fs.writeJSON(projectJsonPath, originalProjectJson, { spaces: 2 });
+      process.chdir(originalCwd);
+      delete process.env.__VERCEL_BUILD_RUNNING;
+    }
+  });
+
+  it('should build root-level `middleware.js` and exclude from static files', async () => {
+    const cwd = fixture('middleware');
+    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/node',
+            apiVersion: 3,
+            use: '@vercel/node',
+            src: 'middleware.js',
+            config: {
+              zeroConfig: true,
+              middleware: true,
+            },
+          },
+          {
+            require: '@vercel/static',
+            apiVersion: 2,
+            use: '@vercel/static',
+            src: '!{api/**,package.json,middleware.[jt]s}',
+            config: {
+              zeroConfig: true,
+            },
+          },
+        ],
+      });
+
+      // `config.json` includes the "middlewarePath" route
+      const config = await fs.readJSON(join(output, 'config.json'));
+      expect(config).toMatchObject({
+        version: 3,
+        routes: [
+          { src: '/.*', middlewarePath: 'middleware', continue: true },
+          { handle: 'filesystem' },
+          { src: '^/api(/.*)?$', status: 404 },
+          { handle: 'error' },
+          { status: 404, src: '^(?!/api).*$', dest: '/404.html' },
+        ],
+      });
+
+      // "static" directory contains `index.html`, but *not* `middleware.js`
+      const staticFiles = await fs.readdir(join(output, 'static'));
+      expect(staticFiles.sort()).toEqual(['index.html']);
+
+      // "functions" directory contains `middleware.func`
+      const functions = await fs.readdir(join(output, 'functions'));
+      expect(functions.sort()).toEqual(['middleware.func']);
+    } 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/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/client",
-  "version": "12.0.0",
+  "version": "12.0.2-canary.0",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "homepage": "https://vercel.com",
@@ -42,7 +42,7 @@
     ]
   },
   "dependencies": {
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@zeit/fetch": "5.2.0",
     "async-retry": "1.2.3",
     "async-sema": "3.0.0",

packages/go/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/go",
-  "version": "2.0.0",
+  "version": "2.0.2-canary.0",
   "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": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@vercel/ncc": "0.24.0",
     "async-retry": "1.3.1",
     "execa": "^1.0.0",

packages/next/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/next",
-  "version": "3.0.0",
+  "version": "3.0.2-canary.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/next-js",
@@ -45,7 +45,7 @@
     "@types/semver": "6.0.0",
     "@types/text-table": "0.2.1",
     "@types/webpack-sources": "3.2.0",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@vercel/nft": "0.19.1",
     "@vercel/routing-utils": "1.13.4",
     "async-sema": "3.0.1",

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

@@ -56,6 +56,7 @@ import {
   getExportStatus,
   getFilesMapFromReasons,
   getImagesManifest,
+  getMiddlewareManifest,
   getNextConfig,
   getPageLambdaGroups,
   getPrerenderManifest,
@@ -77,6 +78,7 @@ import {
   updateRouteSrc,
   validateEntrypoint,
 } from './utils';
+import assert from 'assert';
 
 export const version = 2;
 export const htmlContentType = 'text/html; charset=utf-8';
@@ -1001,7 +1003,11 @@ export const build: BuildV2 = async ({
       buildId,
       'pages'
     );
-    const pages = await glob('**/!(_middleware).js', pagesDir);
+    const pages = await getServerlessPages({
+      pagesDir,
+      entryPath,
+      outputDirectory,
+    });
     const launcherPath = path.join(__dirname, 'legacy-launcher.js');
     const launcherData = await readFile(launcherPath, 'utf8');
 
@@ -1074,7 +1080,11 @@ export const build: BuildV2 = async ({
       'pages'
     );
 
-    const pages = await glob('**/!(_middleware).js', pagesDir);
+    const pages = await getServerlessPages({
+      pagesDir,
+      entryPath,
+      outputDirectory,
+    });
     const isApiPage = (page: string) =>
       page
         .replace(/\\/g, '/')
@@ -1284,6 +1294,7 @@ export const build: BuildV2 = async ({
         entryPath,
         baseDir,
         dataRoutes,
+        buildId,
         escapedBuildId,
         outputDirectory,
         trailingSlashRedirects,
@@ -2575,3 +2586,32 @@ export const prepareCache: PrepareCache = async ({
   debug('Cache file manifest produced');
   return cache;
 };
+
+async function getServerlessPages(params: {
+  pagesDir: string;
+  entryPath: string;
+  outputDirectory: string;
+}) {
+  const [pages, middlewareManifest] = await Promise.all([
+    glob('**/!(_middleware).js', params.pagesDir),
+    getMiddlewareManifest(params.entryPath, params.outputDirectory),
+  ]);
+
+  // Edge Functions do not consider as Serverless Functions
+  for (const edgeFunctionFile of Object.keys(
+    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'];
+  }
+
+  return pages;
+}

packages/next/src/server-build.ts

@@ -54,6 +54,8 @@ 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';
+const NEXT_DATA_MIDDLEWARE_RESOLVING_VERSION = 'v12.1.7-canary.33';
 
 export async function serverBuild({
   dynamicPages,
@@ -64,6 +66,7 @@ export async function serverBuild({
   workPath,
   entryPath,
   nodeVersion,
+  buildId,
   escapedBuildId,
   dynamicPrefix,
   entryDirectory,
@@ -100,6 +103,7 @@ export async function serverBuild({
   privateOutputs: { files: Files; routes: Route[] };
   entryPath: string;
   dynamicPrefix: string;
+  buildId: string;
   escapedBuildId: string;
   wildcardConfig: BuildResult['wildcard'];
   nodeVersion: NodeVersion;
@@ -131,6 +135,10 @@ 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) {
@@ -788,8 +796,13 @@ export async function serverBuild({
     entryPath,
     outputDirectory,
     routesManifest,
+    isCorrectMiddlewareOrder,
   });
 
+  const isNextDataServerResolving =
+    middleware.staticRoutes.length > 0 &&
+    semver.gte(nextVersion, NEXT_DATA_MIDDLEWARE_RESOLVING_VERSION);
+
   const dynamicRoutes = await getDynamicRoutes(
     entryPath,
     entryDirectory,
@@ -870,6 +883,53 @@ export async function serverBuild({
     }
   }
 
+  const normalizeNextDataRoute = isNextDataServerResolving
+    ? [
+        // strip _next/data prefix for resolving
+        {
+          src: `^${path.join(
+            '/',
+            entryDirectory,
+            '/_next/data/',
+            escapedBuildId,
+            '/(.*).json'
+          )}`,
+          dest: `${path.join('/', entryDirectory, '/$1')}`,
+          continue: true,
+          override: true,
+          has: [
+            {
+              type: 'header',
+              key: 'x-nextjs-data',
+            },
+          ],
+        },
+      ]
+    : [];
+
+  const denormalizeNextDataRoute = isNextDataServerResolving
+    ? [
+        {
+          src: '/(.*)',
+          has: [
+            {
+              type: 'header',
+              key: 'x-nextjs-data',
+            },
+          ],
+          dest: `${path.join(
+            '/',
+            entryDirectory,
+            '/_next/data/',
+            buildId,
+            '/$1.json'
+          )}`,
+          continue: true,
+          override: true,
+        },
+      ]
+    : [];
+
   return {
     wildcard: wildcardConfig,
     images:
@@ -894,6 +954,15 @@ export async function serverBuild({
       ...staticDirectoryFiles,
       ...privateOutputs.files,
       ...middleware.edgeFunctions,
+      ...(isNextDataServerResolving
+        ? {
+            __next_data_catchall: new FileBlob({
+              contentType: 'application/json',
+              mode: 0o644,
+              data: '{}',
+            }),
+          }
+        : {}),
     },
     routes: [
       /*
@@ -913,6 +982,9 @@ export async function serverBuild({
 
       ...privateOutputs.routes,
 
+      // normalize _next/data URL before processing redirects
+      ...normalizeNextDataRoute,
+
       ...(i18n
         ? [
             // Handle auto-adding current default locale to path based on
@@ -1025,6 +1097,10 @@ 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 +1143,13 @@ export async function serverBuild({
             },
           ]),
 
-      ...middleware.staticRoutes,
+      // we need to undo _next/data normalize before checking filesystem
+      ...denormalizeNextDataRoute,
+
+      // 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
@@ -1085,13 +1167,20 @@ export async function serverBuild({
           ]
         : []),
 
-      // No-op _next/data rewrite to trigger handle: 'rewrites' and then 404
-      // if no match to prevent rewriting _next/data unexpectedly
-      {
-        src: path.join('/', entryDirectory, '_next/data/(.*)'),
-        dest: path.join('/', entryDirectory, '_next/data/$1'),
-        check: true,
-      },
+      // normalize _next/data URL before processing rewrites
+      ...normalizeNextDataRoute,
+
+      ...(!isNextDataServerResolving
+        ? [
+            // No-op _next/data rewrite to trigger handle: 'rewrites' and then 404
+            // if no match to prevent rewriting _next/data unexpectedly
+            {
+              src: path.join('/', entryDirectory, '_next/data/(.*)'),
+              dest: path.join('/', entryDirectory, '_next/data/$1'),
+              check: true,
+            },
+          ]
+        : []),
 
       // These need to come before handle: miss or else they are grouped
       // with that routing section
@@ -1150,21 +1239,45 @@ export async function serverBuild({
       // if there no rewrites
       { handle: 'rewrite' },
 
+      // re-build /_next/data URL after resolving
+      ...denormalizeNextDataRoute,
+
       // /_next/data routes for getServerProps/getStaticProps pages
       ...dataRoutes,
 
-      // ensure we 404 for non-existent _next/data routes before
-      // trying page dynamic routes
-      {
-        src: path.join('/', entryDirectory, '_next/data/(.*)'),
-        dest: path.join('/', entryDirectory, '404'),
-        status: 404,
-      },
+      ...(!isNextDataServerResolving
+        ? [
+            // ensure we 404 for non-existent _next/data routes before
+            // trying page dynamic routes
+            {
+              src: path.join('/', entryDirectory, '_next/data/(.*)'),
+              dest: path.join('/', entryDirectory, '404'),
+              status: 404,
+            },
+          ]
+        : []),
 
       // Dynamic routes (must come after dataRoutes as dataRoutes are more
       // specific)
       ...dynamicRoutes,
 
+      ...(isNextDataServerResolving
+        ? [
+            // add a catch-all data route so we don't 404 when getting
+            // middleware effects
+            {
+              src: `^${path.join(
+                '/',
+                entryDirectory,
+                '/_next/data/',
+                escapedBuildId,
+                '/(.*).json'
+              )}`,
+              dest: '__next_data_catchall',
+            },
+          ]
+        : []),
+
       // routes to call after a file has been matched
       { handle: 'hit' },
       // Before we handle static files we need to set proper caching headers

packages/next/src/utils.ts

@@ -2124,12 +2124,11 @@ export {
 interface MiddlewareManifest {
   version: 1;
   sortedMiddleware: string[];
-  middleware: {
-    [page: string]: MiddlewareInfo;
-  };
+  middleware: { [page: string]: EdgeFunctionInfo };
+  functions?: { [page: string]: EdgeFunctionInfo };
 }
 
-interface MiddlewareInfo {
+interface EdgeFunctionInfo {
   env: string[];
   files: string[];
   name: string;
@@ -2142,25 +2141,45 @@ export async function getMiddlewareBundle({
   entryPath,
   outputDirectory,
   routesManifest,
+  isCorrectMiddlewareOrder,
 }: {
   entryPath: string;
   outputDirectory: string;
   routesManifest: RoutesManifest;
+  isCorrectMiddlewareOrder: boolean;
 }) {
   const middlewareManifest = await getMiddlewareManifest(
     entryPath,
     outputDirectory
   );
+  const sortedFunctions = [
+    ...(!middlewareManifest
+      ? []
+      : middlewareManifest.sortedMiddleware.map(key => ({
+          key,
+          edgeFunction: middlewareManifest?.middleware[key],
+          type: 'middleware' as const,
+        }))),
 
-  if (middlewareManifest && middlewareManifest?.sortedMiddleware.length > 0) {
+    ...Object.entries(middlewareManifest?.functions ?? {}).map(
+      ([key, edgeFunction]) => {
+        return {
+          key,
+          edgeFunction,
+          type: 'function' as const,
+        };
+      }
+    ),
+  ];
+
+  if (middlewareManifest && sortedFunctions.length > 0) {
     const workerConfigs = await Promise.all(
-      middlewareManifest.sortedMiddleware.map(async key => {
-        const middleware = middlewareManifest.middleware[key];
+      sortedFunctions.map(async ({ key, edgeFunction, type }) => {
         try {
           const wrappedModuleSource = await getNextjsEdgeFunctionSource(
-            middleware.files,
+            edgeFunction.files,
             {
-              name: middleware.name,
+              name: edgeFunction.name,
               staticRoutes: routesManifest.staticRoutes,
               dynamicRoutes: routesManifest.dynamicRoutes.filter(
                 r => !('isMiddleware' in r)
@@ -2171,18 +2190,19 @@ export async function getMiddlewareBundle({
               },
             },
             path.resolve(entryPath, outputDirectory),
-            middleware.wasm
+            edgeFunction.wasm
           );
 
           return {
-            page: middlewareManifest.middleware[key].page,
+            type,
+            page: edgeFunction.page,
             edgeFunction: (() => {
               const { source, map } = wrappedModuleSource.sourceAndMap();
               const transformedMap = stringifySourceMap(
                 transformSourceMap(map)
               );
 
-              const wasmFiles = (middleware.wasm ?? []).reduce(
+              const wasmFiles = (edgeFunction.wasm ?? []).reduce(
                 (acc: Files, { filePath, name }) => {
                   const fullFilePath = path.join(
                     entryPath,
@@ -2201,7 +2221,7 @@ export async function getMiddlewareBundle({
 
               return new EdgeFunction({
                 deploymentTarget: 'v8-worker',
-                name: middleware.name,
+                name: edgeFunction.name,
                 files: {
                   'index.js': new FileBlob({
                     data: source,
@@ -2218,13 +2238,10 @@ export async function getMiddlewareBundle({
                   ...wasmFiles,
                 },
                 entrypoint: 'index.js',
-                envVarsInUse: middleware.env,
+                envVarsInUse: edgeFunction.env,
               });
             })(),
-            routeSrc: getRouteSrc(
-              middlewareManifest.middleware[key],
-              routesManifest
-            ),
+            routeSrc: getRouteSrc(edgeFunction, routesManifest),
           };
         } catch (e: any) {
           e.message = `Can't build edge function ${key}: ${e.message}`;
@@ -2245,15 +2262,23 @@ export async function getMiddlewareBundle({
 
     for (const worker of workerConfigs.values()) {
       const edgeFile = worker.edgeFunction.name;
-      worker.edgeFunction.name = edgeFile.replace(/^pages\//, '');
-      source.edgeFunctions[edgeFile] = worker.edgeFunction;
-      const route = {
+      const shortPath = edgeFile.replace(/^pages\//, '');
+      worker.edgeFunction.name = shortPath;
+      source.edgeFunctions[shortPath] = worker.edgeFunction;
+      const route: Route = {
         continue: true,
-        override: true,
-        middlewarePath: edgeFile,
         src: worker.routeSrc,
       };
 
+      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 {
@@ -2276,7 +2301,7 @@ export async function getMiddlewareBundle({
  * location. If the manifest can't be found it will resolve to
  * undefined.
  */
-async function getMiddlewareManifest(
+export async function getMiddlewareManifest(
   entryPath: string,
   outputDirectory: string
 ): Promise<MiddlewareManifest | undefined> {
@@ -2308,7 +2333,7 @@ async function getMiddlewareManifest(
  * @returns A regexp string for the middleware route.
  */
 function getRouteSrc(
-  { regexp, page }: MiddlewareInfo,
+  { regexp, page }: EdgeFunctionInfo,
   { basePath = '', i18n }: RoutesManifest
 ): string {
   if (page === '/') {

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

@@ -6,7 +6,7 @@
       "path": "/redirect-me",
       "status": 307,
       "responseHeaders": {
-        "Location": "/from-next-config/"
+        "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/node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/node",
-  "version": "2.0.0",
+  "version": "2.1.1-canary.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/node-js",
@@ -45,9 +45,10 @@
     "@types/etag": "1.8.0",
     "@types/jest": "27.4.1",
     "@types/test-listen": "1.1.0",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.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 +373,76 @@ export const build: BuildV3 = async ({
   );
   debug(`Trace complete [${Date.now() - traceTime}ms]`);
 
-  const shouldAddHelpers = !(
-    config.helpers === false || process.env.NODEJS_HELPERS === '0'
-  );
+  let routes: BuildResultV3['routes'];
+  let output: BuildResultV3['output'] | undefined;
 
-  const lambda = new NodejsLambda({
-    files: preparedFiles,
-    handler: renameTStoJS(relative(baseDir, entrypointPath)),
-    runtime: nodeVersion.runtime,
-    shouldAddHelpers,
-    shouldAddSourcemapSupport,
-    awsLambdaHandler,
-  });
+  const handler = renameTStoJS(relative(baseDir, entrypointPath));
+  const outputName = config.zeroConfig
+    ? handler.substring(0, handler.length - 3)
+    : handler;
 
-  return { output: lambda };
+  // Will output an `EdgeFunction` for when `config.middleware = true`
+  // (i.e. for root-level "middleware" file) or if source code contains:
+  // `export const config = { runtime: 'experimental-edge' }`
+  let isEdgeFunction = false;
+
+  // Add a catch-all `route` for Middleware
+  if (config.middleware === true) {
+    routes = [
+      {
+        src: '/.*',
+        middlewarePath: config.zeroConfig
+          ? outputName
+          : relative(baseDir, entrypointPath),
+        continue: true,
+      },
+    ];
+
+    // Middleware is implicitly an Edge Function
+    isEdgeFunction = true;
+  }
+
+  if (!isEdgeFunction) {
+    const project = new Project();
+    const staticConfig = getConfig(project, entrypointPath);
+    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)})`
+        );
+      }
+      isEdgeFunction = staticConfig.runtime === 'experimental-edge';
+    }
+  }
+
+  if (isEdgeFunction) {
+    output = new EdgeFunction({
+      entrypoint: handler,
+      files: preparedFiles,
+
+      // TODO: remove - these two properties should not be required
+      name: outputName,
+      deploymentTarget: 'v8-worker',
+    });
+  } else {
+    // "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 { routes, output };
 };
 
 export const prepareCache: PrepareCache = ({ repoRootPath, workPath }) => {

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/test/fixtures/62-edge-middleware/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/62-edge-middleware/middleware.ts

@@ -0,0 +1,14 @@
+export default (req: Request) => {
+  const url = new URL(req.url);
+  const headers = new Headers({
+    'x-got-middleware': 'true',
+  });
+  if (url.pathname === '/' || url.pathname.startsWith('/api/')) {
+    // For `index.html` and `/api/edge.js`, pass through
+    headers.set('x-middleware-next', '1');
+    return new Response(null, { headers });
+  } else {
+    // For everything else, serve a custom response
+    return new Response(`RANDOMNESS_PLACEHOLDER:middleware`, { headers });
+  }
+};

packages/node/test/fixtures/62-edge-middleware/vercel.json

@@ -0,0 +1,26 @@
+{
+  "builds": [
+    { "src": "api/**/*.js", "use": "@vercel/node" },
+    {
+      "src": "middleware.ts",
+      "use": "@vercel/node",
+      "config": { "middleware": true }
+    }
+  ],
+  "probes": [
+    {
+      "path": "/api/edge.js",
+      "mustContain": "RANDOMNESS_PLACEHOLDER:edge",
+      "responseHeaders": {
+        "x-got-middleware": "true"
+      }
+    },
+    {
+      "path": "/non-exist",
+      "mustContain": "RANDOMNESS_PLACEHOLDER:middleware",
+      "responseHeaders": {
+        "x-got-middleware": "true"
+      }
+    }
+  ]
+}

packages/python/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/python",
-  "version": "3.0.0",
+  "version": "3.0.2-canary.0",
   "main": "./dist/index.js",
   "license": "MIT",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/python",
@@ -23,7 +23,7 @@
   "devDependencies": {
     "@types/execa": "^0.9.0",
     "@types/jest": "27.4.1",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@vercel/ncc": "0.24.0",
     "execa": "^1.0.0",
     "typescript": "4.3.4"

packages/redwood/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/redwood",
-  "version": "1.0.0",
+  "version": "1.0.2-canary.0",
   "main": "./dist/index.js",
   "license": "MIT",
   "homepage": "https://vercel.com/docs",
@@ -28,6 +28,6 @@
     "@types/aws-lambda": "8.10.19",
     "@types/node": "*",
     "@types/semver": "6.0.0",
-    "@vercel/build-utils": "4.0.0"
+    "@vercel/build-utils": "4.1.1-canary.0"
   }
 }

packages/remix/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/remix",
-  "version": "1.0.0",
+  "version": "1.0.2-canary.0",
   "license": "MIT",
   "main": "./dist/index.js",
   "homepage": "https://vercel.com/docs",
@@ -27,7 +27,7 @@
   "devDependencies": {
     "@types/jest": "27.5.1",
     "@types/node": "*",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "typescript": "4.6.4"
   }
 }

packages/ruby/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@vercel/ruby",
   "author": "Nathan Cahill <nathan@nathancahill.com>",
-  "version": "1.3.8",
+  "version": "1.3.10-canary.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/ruby",
@@ -23,7 +23,7 @@
   "devDependencies": {
     "@types/fs-extra": "8.0.0",
     "@types/semver": "6.0.0",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@vercel/ncc": "0.24.0",
     "execa": "2.0.4",
     "fs-extra": "^7.0.1",

packages/static-build/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/static-build",
-  "version": "1.0.0",
+  "version": "1.0.2-canary.0",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/build-step",
@@ -37,7 +37,7 @@
     "@types/ms": "0.7.31",
     "@types/node-fetch": "2.5.4",
     "@types/promise-timeout": "1.3.0",
-    "@vercel/build-utils": "4.0.0",
+    "@vercel/build-utils": "4.1.1-canary.0",
     "@vercel/frameworks": "1.0.1",
     "@vercel/ncc": "0.24.0",
     "@vercel/routing-utils": "1.13.4",

packages/static-build/src/utils/build-output-v3.ts

@@ -50,6 +50,11 @@ export function createBuildOutput(
     else if (framework) buildCommandName = framework.name;
     else buildCommandName = 'the "build" script';
 
+    if (meta.isDev) {
+      throw new Error(
+        `Detected Build Output v3 from ${buildCommandName}, but it is not supported for \`vercel dev\`. Please set the Development Command in your Project Settings.`
+      );
+    }
     throw new Error(
       `Detected Build Output v3 from ${buildCommandName}, but this Deployment is not using \`vercel build\`.\nPlease set the \`ENABLE_VC_BUILD=1\` environment variable.`
     );