Publish

- @now/build-utils@0.4.29
 - @now/cgi@0.0.12
 - @now/go@0.2.9
 - @now/html-minifier@1.0.5
 - @now/lambda@0.4.6
 - @now/md@0.4.6
 - @now/mdx-deck@0.4.15
 - @now/next@0.0.78
 - @now/node-bridge@0.1.8
 - @now/node-server@0.4.23
 - @now/node@0.4.25
 - @now/optipng@0.4.6
 - @now/php@0.4.10
 - @now/python@0.0.39
 - @now/static-build@0.4.14

.circleci/config.yml

@@ -6,28 +6,64 @@ jobs:
     working_directory: ~/repo
     steps:
       - checkout
-      - run: yarn install
-      - run: yarn bootstrap
       - run:
-          name: Saving Authentication Information
-          command: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
+          name: Updating apt-get list
+          command: sudo apt-get update
       - run:
-          name: Publishing to Canary Channel
-          command: yarn run lerna publish from-git --npm-tag canary --yes
-  publish-canary:
+          name: Installing the latest version of Go
+          command: sudo apt-get install golang-go
+      - run:
+          name: Installing dependencies
+          command: yarn install
+      - run:
+          name: Bootstrapping
+          command: yarn bootstrap
+      - run:
+          name: Linting
+          command: yarn lint
+      - run:
+          name: Tests
+          command: yarn test
+  # publish-canary:
+  #   docker:
+  #     - image: circleci/node:10
+  #   working_directory: ~/repo
+  #   steps:
+  #     - checkout
+  #     - run:
+  #         name: Updating apt-get list
+  #         command: sudo apt-get update
+  #     - run:
+  #         name: Installing the latest version of Go
+  #         command: sudo apt-get install golang-go
+  #     - run: yarn install
+  #     - run: yarn bootstrap
+  #     - run:
+  #         name: Saving Authentication Information
+  #         command: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
+  #     - run:
+  #         name: Publishing to Canary Channel
+  #         command: yarn run lerna publish from-git --npm-tag canary --yes
+  publish-stable:
     docker:
       - image: circleci/node:10
     working_directory: ~/repo
     steps:
       - checkout
+      - run:
+          name: Updating apt-get list
+          command: sudo apt-get update
+      - run:
+          name: Installing the latest version of Go
+          command: sudo apt-get install golang-go
       - run: yarn install
       - run: yarn bootstrap
       - run:
           name: Saving Authentication Information
           command: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
       - run:
-          name: Publishing to Canary Channel
-          command: yarn run lerna publish from-git --npm-tag canary --yes
+          name: Publishing to Stable Channel
+          command: yarn run lerna publish from-git --yes
 workflows:
   version: 2
   unscheduled:
@@ -36,17 +72,17 @@ workflows:
           filters:
             tags:
               only: /.*/
-      - publish-canary:
+      - publish-stable:
+          requires:
+            - build
           filters:
             tags:
-              only: /.*/
+              only: /^.*(\d+\.)(\d+\.)(\*|\d+)$/
             branches:
               ignore: /.*/
-      # - publish-stable:
+      # - publish-canary:
       #     requires:
       #       - build
       #     filters:
       #       tags:
-      #         only: /^(\d+\.)?(\d+\.)?(\*|\d+)$/
-      #       branches:
-      #         ignore: /.*/
+      #         only: /^.*canary.*($|\b)/

.eslintignore

@@ -0,0 +1,3 @@
+/tmp/*
+/node_modules/*
+/**/node_modules/*

.eslintrc

@@ -0,0 +1,24 @@
+{
+  "extends": ["prettier", "airbnb-base"],
+  "rules": {
+    "no-console": 0,
+    "import/no-unresolved": 0,
+    "import/no-dynamic-require": 0,
+    "global-require": 0
+  },
+  "overrides": [
+    {
+      "files": ["test/**"],
+      "rules": {
+        "import/no-extraneous-dependencies": 0
+      },
+      "globals": {
+        "describe": true,
+        "it": true,
+        "test": true,
+        "expect": true
+      }
+    }
+  ]
+}
+

.gitignore

@@ -1 +1,2 @@
 node_modules
+tmp

README.md

@@ -3,3 +3,19 @@
 This is the full list of official Builders provided by the ZEIT team.
 
 More details here: http://zeit.co/docs
+
+### Publishing to npm
+
+Run the following command to publish modified builders to npm:
+
+For the stable channel use:
+
+```
+yarn publish-stable
+```
+
+For the canary channel use:
+
+```
+yarn publish-canary
+```

jest.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  testEnvironment: 'node',
+  rootDir: 'test',
+  collectCoverageFrom: ['packages/**/*.{js,jsx}', '!**/node_modules/**'],
+};

package.json

@@ -11,6 +11,33 @@
   "scripts": {
     "lerna": "lerna",
     "bootstrap": "lerna bootstrap",
-    "publish-canary": "lerna version prerelease --preid canary"
+    "publish-stable": "lerna version",
+    "publish-canary": "lerna version prerelease --preid canary",
+    "lint": "tsc && eslint .",
+    "test": "jest --runInBand",
+    "lint-staged": "lint-staged"
+  },
+  "pre-commit": "lint-staged",
+  "lint-staged": {
+    "*.js": [
+      "prettier --write --single-quote",
+      "eslint --fix",
+      "git add"
+    ]
+  },
+  "devDependencies": {
+    "@types/fs-extra": "^5.0.4",
+    "@types/glob": "^7.1.1",
+    "@types/multistream": "^2.1.1",
+    "@types/node": "^10.12.8",
+    "eslint": "^5.9.0",
+    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-config-prettier": "^3.1.0",
+    "eslint-plugin-import": "^2.14.0",
+    "jest": "^23.6.0",
+    "lint-staged": "^8.0.4",
+    "pre-commit": "^1.2.2",
+    "prettier": "^1.15.2",
+    "typescript": "^3.1.6"
   }
 }

packages/now-build-utils/file-blob.js

@@ -2,7 +2,7 @@ const assert = require('assert');
 const intoStream = require('into-stream');
 
 class FileBlob {
-  constructor ({ mode = 0o100644, data }) {
+  constructor({ mode = 0o100644, data }) {
     assert(typeof mode === 'number');
     assert(typeof data === 'string' || Buffer.isBuffer(data));
     this.type = 'FileBlob';
@@ -10,14 +10,14 @@ class FileBlob {
     this.data = data;
   }
 
-  static async fromStream ({ mode = 0o100644, stream }) {
+  static async fromStream({ mode = 0o100644, stream }) {
     assert(typeof mode === 'number');
     assert(typeof stream.pipe === 'function'); // is-stream
     const chunks = [];
 
     await new Promise((resolve, reject) => {
-      stream.on('data', (chunk) => chunks.push(Buffer.from(chunk)));
-      stream.on('error', (error) => reject(error));
+      stream.on('data', chunk => chunks.push(Buffer.from(chunk)));
+      stream.on('error', error => reject(error));
       stream.on('end', () => resolve());
     });
 
@@ -25,7 +25,7 @@ class FileBlob {
     return new FileBlob({ mode, data });
   }
 
-  toStream () {
+  toStream() {
     return intoStream(this.data);
   }
 }

packages/now-build-utils/file-fs-ref.js

@@ -1,21 +1,39 @@
 const assert = require('assert');
 const fs = require('fs-extra');
-const MultiStream = require('multistream');
+const multiStream = require('multistream');
 const path = require('path');
 const Sema = require('async-sema');
 
+/** @typedef {{[filePath: string]: FileFsRef}} FsFiles */
+
 const semaToPreventEMFILE = new Sema(30);
 
+/**
+ * @constructor
+ * @argument {Object} options
+ * @argument {number} [options.mode=0o100644]
+ * @argument {string} options.fsPath
+ */
 class FileFsRef {
-  constructor ({ mode = 0o100644, fsPath }) {
+  constructor({ mode = 0o100644, fsPath }) {
     assert(typeof mode === 'number');
     assert(typeof fsPath === 'string');
+    /** @type {string} */
     this.type = 'FileFsRef';
+    /** @type {number} */
     this.mode = mode;
+    /** @type {string} */
     this.fsPath = fsPath;
   }
 
-  static async fromStream ({ mode = 0o100644, stream, fsPath }) {
+  /**
+   * @argument {Object} options
+   * @argument {number} [options.mode=0o100644]
+   * @argument {NodeJS.ReadableStream} options.stream
+   * @argument {string} options.fsPath
+   * @returns {Promise<FileFsRef>}
+   */
+  static async fromStream({ mode = 0o100644, stream, fsPath }) {
     assert(typeof mode === 'number');
     assert(typeof stream.pipe === 'function'); // is-stream
     assert(typeof fsPath === 'string');
@@ -24,36 +42,45 @@ class FileFsRef {
     await new Promise((resolve, reject) => {
       const dest = fs.createWriteStream(fsPath);
       stream.pipe(dest);
-      stream.on('error', (error) => reject(error));
-      dest.on('finish', () => resolve());
-      dest.on('error', (error) => reject(error));
+      stream.on('error', reject);
+      dest.on('finish', resolve);
+      dest.on('error', reject);
     });
 
     await fs.chmod(fsPath, mode.toString(8).slice(-3));
     return new FileFsRef({ mode, fsPath });
   }
 
-  async toStreamAsync () {
+  /**
+   * @returns {Promise<NodeJS.ReadableStream>}
+   */
+  async toStreamAsync() {
     await semaToPreventEMFILE.acquire();
     const release = () => semaToPreventEMFILE.release();
     const stream = fs.createReadStream(this.fsPath);
-    stream.on('end', release);
+    stream.on('close', release);
     stream.on('error', release);
     return stream;
   }
 
-  toStream () {
+  /**
+   * @returns {NodeJS.ReadableStream}
+   */
+  toStream() {
     let flag;
 
-    return new MultiStream((cb) => {
-      if (flag) return cb();
+    // eslint-disable-next-line consistent-return
+    return multiStream((cb) => {
+      if (flag) return cb(null, null);
       flag = true;
 
-      this.toStreamAsync().then((stream) => {
-        cb(undefined, stream);
-      }).catch((error) => {
-        cb(error);
-      });
+      this.toStreamAsync()
+        .then((stream) => {
+          cb(null, stream);
+        })
+        .catch((error) => {
+          cb(error, null);
+        });
     });
   }
 }

packages/now-build-utils/file-ref.js

@@ -1,21 +1,43 @@
 const assert = require('assert');
 const fetch = require('node-fetch');
-const MultiStream = require('multistream');
+const multiStream = require('multistream');
 const retry = require('async-retry');
 const Sema = require('async-sema');
 
+/** @typedef {{[filePath: string]: FileRef}} Files */
+
 const semaToDownloadFromS3 = new Sema(10);
 
+class BailableError extends Error {
+  constructor(...args) {
+    super(...args);
+    /** @type {boolean} */
+    this.bail = false;
+  }
+}
+
+/**
+ * @constructor
+ * @argument {Object} options
+ * @argument {number} [options.mode=0o100644]
+ * @argument {string} options.digest
+ */
 class FileRef {
-  constructor ({ mode = 0o100644, digest }) {
+  constructor({ mode = 0o100644, digest }) {
     assert(typeof mode === 'number');
     assert(typeof digest === 'string');
+    /** @type {string} */
     this.type = 'FileRef';
+    /** @type {number} */
     this.mode = mode;
+    /** @type {string} */
     this.digest = digest;
   }
 
-  async toStreamAsync () {
+  /**
+   * @returns {Promise<NodeJS.ReadableStream>}
+   */
+  async toStreamAsync() {
     let url;
     // sha:24be087eef9fac01d61b30a725c1a10d7b45a256
     const digestParts = this.digest.split(':');
@@ -29,33 +51,44 @@ class FileRef {
     await semaToDownloadFromS3.acquire();
     console.time(`downloading ${url}`);
     try {
-      return await retry(async () => {
-        const resp = await fetch(url);
-        if (!resp.ok) {
-          const error = new Error(`${resp.status} ${resp.statusText}`);
-          if (resp.status === 403) error.bail = true;
-          throw error;
-        }
-        return resp.body;
-      }, { factor: 1, retries: 3 });
+      return await retry(
+        async () => {
+          const resp = await fetch(url);
+          if (!resp.ok) {
+            const error = new BailableError(
+              `${resp.status} ${resp.statusText}`,
+            );
+            if (resp.status === 403) error.bail = true;
+            throw error;
+          }
+          return resp.body;
+        },
+        { factor: 1, retries: 3 },
+      );
     } finally {
       console.timeEnd(`downloading ${url}`);
       semaToDownloadFromS3.release();
     }
   }
 
-  toStream () {
+  /**
+   * @returns {NodeJS.ReadableStream}
+   */
+  toStream() {
     let flag;
 
-    return new MultiStream((cb) => {
-      if (flag) return cb();
+    // eslint-disable-next-line consistent-return
+    return multiStream((cb) => {
+      if (flag) return cb(null, null);
       flag = true;
 
-      this.toStreamAsync().then((stream) => {
-        cb(undefined, stream);
-      }).catch((error) => {
-        cb(error);
-      });
+      this.toStreamAsync()
+        .then((stream) => {
+          cb(null, stream);
+        })
+        .catch((error) => {
+          cb(error, null);
+        });
     });
   }
 }

packages/now-build-utils/fs/download.js

@@ -1,20 +1,38 @@
-const FileFsRef = require('../file-fs-ref.js');
 const path = require('path');
+const FileFsRef = require('../file-fs-ref.js');
 
-async function downloadFile (file, fsPath) {
+/** @typedef {import('../file-ref')} FileRef */
+/** @typedef {import('../file-fs-ref')} FileFsRef */
+/** @typedef {{[filePath: string]: FileRef|FileFsRef}} Files */
+/** @typedef {{[filePath: string]: FileFsRef}|{}} DownloadedFiles */
+
+/**
+ * @param {FileRef|FileFsRef} file
+ * @param {string} fsPath
+ * @returns {Promise<FileFsRef>}
+ */
+async function downloadFile(file, fsPath) {
   const { mode } = file;
   const stream = file.toStream();
-  return await FileFsRef.fromStream({ mode, stream, fsPath });
+  return FileFsRef.fromStream({ mode, stream, fsPath });
 }
 
-module.exports = async function download (files, basePath) {
+/**
+ * Download files to disk
+ * @argument {Files} files
+ * @argument {string} basePath
+ * @returns {Promise<DownloadedFiles>}
+ */
+module.exports = async function download(files, basePath) {
   const files2 = {};
 
-  await Promise.all(Object.keys(files).map(async (name) => {
-    const file = files[name];
-    const fsPath = path.join(basePath, name);
-    files2[name] = await downloadFile(file, fsPath);
-  }));
+  await Promise.all(
+    Object.keys(files).map(async (name) => {
+      const file = files[name];
+      const fsPath = path.join(basePath, name);
+      files2[name] = await downloadFile(file, fsPath);
+    }),
+  );
 
   return files2;
 };

packages/now-build-utils/fs/get-writable-directory.js

@@ -4,7 +4,7 @@ const fs = require('fs-extra');
 const dev = !process.env.AWS_EXECUTION_ENV;
 const TMP_PATH = dev ? path.join(process.cwd(), 'tmp') : '/tmp';
 
-module.exports = async function getWritableDirectory () {
+module.exports = async function getWritableDirectory() {
   const name = Math.floor(Math.random() * 0x7fffffff).toString(16);
   const directory = path.join(TMP_PATH, name);
   await fs.mkdirp(directory);

packages/now-build-utils/fs/glob.js

@@ -1,41 +1,67 @@
 const assert = require('assert');
-const FileFsRef = require('../file-fs-ref.js');
 const path = require('path');
 const vanillaGlob = require('glob');
+const FileFsRef = require('../file-fs-ref.js');
 
-module.exports = function glob (pattern, opts = {}, mountpoint) {
+/** @typedef {import('fs').Stats} Stats */
+/** @typedef {import('glob').IOptions} GlobOptions */
+/** @typedef {import('../file-fs-ref').FsFiles|{}} GlobFiles */
+
+/**
+ * @argument {string} pattern
+ * @argument {GlobOptions|string} opts
+ * @argument {string} [mountpoint]
+ * @returns {Promise<GlobFiles>}
+ */
+module.exports = function glob(pattern, opts = {}, mountpoint) {
   return new Promise((resolve, reject) => {
+    /** @type {GlobOptions} */
+    let options;
     if (typeof opts === 'string') {
-      opts = { cwd: opts };
+      options = { cwd: opts };
+    } else {
+      options = opts;
     }
 
-    if (!opts.cwd) {
-      throw new Error('Second argument (basePath) must be specified for names of resulting files');
+    if (!options.cwd) {
+      throw new Error(
+        'Second argument (basePath) must be specified for names of resulting files',
+      );
     }
 
-    if (!path.isAbsolute(opts.cwd)) {
-      throw new Error(`basePath/cwd must be an absolute path (${opts.cwd})`);
+    if (!path.isAbsolute(options.cwd)) {
+      throw new Error(`basePath/cwd must be an absolute path (${options.cwd})`);
     }
 
-    opts.statCache = {};
-    opts.stat = true;
-    opts.dot = true;
+    options.statCache = {};
+    options.stat = true;
+    options.dot = true;
 
-    vanillaGlob(pattern, opts, (error, files) => {
+    // eslint-disable-next-line consistent-return
+    vanillaGlob(pattern, options, (error, files) => {
       if (error) return reject(error);
 
-      resolve(files.reduce((files2, relativePath) => {
-        const fsPath = path.join(opts.cwd, relativePath);
-        const stat = opts.statCache[fsPath];
-        assert(stat, `statCache does not contain value for ${relativePath} (resolved to ${fsPath})`);
-        if (stat.isFile()) {
-          let finalPath = relativePath;
-          if (mountpoint) finalPath = path.join(mountpoint, finalPath);
-          files2[finalPath] = new FileFsRef({ mode: stat.mode, fsPath });
-        }
+      resolve(
+        files.reduce((files2, relativePath) => {
+          const fsPath = path.join(options.cwd, relativePath);
+          /** @type {Stats|any} */
+          const stat = options.statCache[fsPath];
+          assert(
+            stat,
+            `statCache does not contain value for ${relativePath} (resolved to ${fsPath})`,
+          );
+          if (stat && stat.isFile()) {
+            let finalPath = relativePath;
+            if (mountpoint) finalPath = path.join(mountpoint, finalPath);
+            return {
+              ...files2,
+              [finalPath]: new FileFsRef({ mode: stat.mode, fsPath }),
+            };
+          }
 
-        return files2;
-      }, {}));
+          return files2;
+        }, {}),
+      );
     });
   });
 };

packages/now-build-utils/fs/rename.js

@@ -1,9 +1,25 @@
-module.exports = function rename (files, delegate) {
-  const files2 = {};
+/** @typedef { import('@now/build-utils/file-ref') } FileRef */
+/** @typedef { import('@now/build-utils/file-fs-ref') } FileFsRef */
+/** @typedef {{[filePath: string]: FileRef|FileFsRef}} Files */
 
-  for (const name in files) {
-    files2[delegate(name)] = files[name];
-  }
+/**
+ * @callback delegate
+ * @argument {string} name
+ * @returns {string}
+ */
 
-  return files2;
+/**
+ * Rename files using delegate function
+ * @argument {Files} files
+ * @argument {delegate} delegate
+ * @returns {Files}
+ */
+module.exports = function rename(files, delegate) {
+  return Object.keys(files).reduce(
+    (newFiles, name) => ({
+      ...newFiles,
+      [delegate(name)]: files[name],
+    }),
+    {},
+  );
 };

packages/now-build-utils/fs/run-user-scripts.js

@@ -2,48 +2,68 @@ const fs = require('fs-extra');
 const path = require('path');
 const { spawn } = require('child_process');
 
-async function runShellScript (fsPath) {
+function spawnAsync(command, args, cwd) {
+  return new Promise((resolve, reject) => {
+    const child = spawn(command, args, { stdio: 'inherit', cwd });
+    child.on('error', reject);
+    child.on('close', (code, signal) => (code !== 0
+      ? reject(new Error(`Exited with ${code || signal}`))
+      : resolve()));
+  });
+}
+
+async function runShellScript(fsPath) {
   const destPath = path.dirname(fsPath);
-  await spawnAsync('./' + path.basename(fsPath), [], destPath);
+  await spawnAsync(`./${path.basename(fsPath)}`, [], destPath);
   return true;
 }
 
-async function shouldUseNpm (destPath) {
+async function shouldUseNpm(destPath) {
+  let currentDestPath = destPath;
+  // eslint-disable-next-line no-constant-condition
   while (true) {
-    if (await fs.exists(path.join(destPath, 'package.json'))) {
-      if (await fs.exists(path.join(destPath, 'package-lock.json'))) {
+    // eslint-disable-next-line no-await-in-loop
+    if (await fs.exists(path.join(currentDestPath, 'package.json'))) {
+      // eslint-disable-next-line no-await-in-loop
+      if (await fs.exists(path.join(currentDestPath, 'package-lock.json'))) {
         return true;
-      } else {
-        return false;
       }
+      return false;
     }
 
-    const newDestPath = path.dirname(destPath);
-    if (destPath === newDestPath) break;
-    destPath = newDestPath;
+    const newDestPath = path.dirname(currentDestPath);
+    if (currentDestPath === newDestPath) break;
+    currentDestPath = newDestPath;
   }
 
   return false;
 }
 
-async function runNpmInstall (destPath, args = []) {
+async function runNpmInstall(destPath, args = []) {
+  let commandArgs = args;
   console.log(`installing to ${destPath}`);
   if (await shouldUseNpm(destPath)) {
-    args = args.filter((a) => a !== '--prefer-offline');
-    await spawnAsync('npm', [ 'install' ].concat(args), destPath);
+    commandArgs = args.filter(a => a !== '--prefer-offline');
+    await spawnAsync('npm', ['install'].concat(commandArgs), destPath);
+    await spawnAsync('npm', ['cache', 'clean', '--force'], destPath);
   } else {
-    await spawnAsync('yarn', [ '--cwd', destPath ].concat(args), destPath);
+    await spawnAsync('yarn', ['--cwd', destPath].concat(commandArgs), destPath);
+    await spawnAsync('yarn', ['cache', 'clean'], destPath);
   }
 }
 
-async function runPackageJsonScript (destPath, scriptName) {
+async function runPackageJsonScript(destPath, scriptName) {
   try {
     if (await shouldUseNpm(destPath)) {
       console.log(`running "npm run ${scriptName}"`);
-      await spawnAsync('npm', [ 'run', scriptName ], destPath);
+      await spawnAsync('npm', ['run', scriptName], destPath);
     } else {
       console.log(`running "yarn run ${scriptName}"`);
-      await spawnAsync('yarn', [ '--cwd', destPath, 'run', scriptName ], destPath);
+      await spawnAsync(
+        'yarn',
+        ['--cwd', destPath, 'run', scriptName],
+        destPath,
+      );
     }
   } catch (error) {
     console.log(error.message);
@@ -53,19 +73,8 @@ async function runPackageJsonScript (destPath, scriptName) {
   return true;
 }
 
-function spawnAsync (command, args, cwd) {
-  return new Promise((resolve, reject) => {
-    const child = spawn(command, args, { stdio: 'inherit', cwd });
-    child.on('error', reject);
-    child.on('close', (code, signal) => {
-      if (code !== 0) return reject(new Error(`Exited with ${code || signal}`));
-      resolve();
-    });
-  });
-}
-
 module.exports = {
   runShellScript,
   runNpmInstall,
-  runPackageJsonScript
+  runPackageJsonScript,
 };

packages/now-build-utils/fs/stream-to-buffer.js

@@ -1,10 +1,4 @@
-const streamToBuffer = require('fast-stream-to-buffer');
+const fastStreamToBuffer = require('fast-stream-to-buffer');
+const { promisify } = require('util');
 
-module.exports = async function (stream) {
-  return await new Promise((resolve, reject) => {
-    streamToBuffer(stream, function (error, buffer) {
-      if (error) return reject(error);
-      resolve(buffer);
-    });
-  });
-};
+module.exports = promisify(fastStreamToBuffer);

packages/now-build-utils/lambda.js

@@ -3,7 +3,9 @@ const { ZipFile } = require('yazl');
 const streamToBuffer = require('./fs/stream-to-buffer.js');
 
 class Lambda {
-  constructor ({ zipBuffer, handler, runtime, environment }) {
+  constructor({
+    zipBuffer, handler, runtime, environment,
+  }) {
     this.type = 'Lambda';
     this.zipBuffer = zipBuffer;
     this.handler = handler;
@@ -14,26 +16,34 @@ class Lambda {
 
 const mtime = new Date(1540000000000);
 
-async function createLambda ({ files, handler, runtime, environment }) {
-  assert(typeof files === 'object');
-  assert(typeof handler === 'string');
-  assert(typeof runtime === 'string');
-  if (environment === undefined) environment = {};
-  assert(typeof environment === 'object');
+async function createLambda({
+  files, handler, runtime, environment = {},
+}) {
+  assert(typeof files === 'object', '"files" must be an object');
+  assert(typeof handler === 'string', '"handler" is not a string');
+  assert(typeof runtime === 'string', '"runtime" is not a string');
+  assert(typeof environment === 'object', '"environment" is not an object');
   const zipFile = new ZipFile();
 
-  for (const name of Object.keys(files).sort()) {
-    const file = files[name];
-    const stream = file.toStream();
-    zipFile.addReadStream(stream, name, { mode: file.mode, mtime });
-  }
+  Object.keys(files)
+    .sort()
+    .forEach((name) => {
+      const file = files[name];
+      const stream = file.toStream();
+      zipFile.addReadStream(stream, name, { mode: file.mode, mtime });
+    });
 
   zipFile.end();
   const zipBuffer = await streamToBuffer(zipFile.outputStream);
-  return new Lambda({ zipBuffer, handler, runtime, environment });
+  return new Lambda({
+    zipBuffer,
+    handler,
+    runtime,
+    environment,
+  });
 }
 
 module.exports = {
   Lambda,
-  createLambda
+  createLambda,
 };

packages/now-build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/build-utils",
-  "version": "0.4.27-canary.3",
+  "version": "0.4.29",
   "dependencies": {
     "async-retry": "1.2.3",
     "async-sema": "2.1.4",

packages/now-cgi/.editorconfig

@@ -0,0 +1,32 @@
+root = true
+
+[*]
+indent_style = tab
+indent_size = 4
+tab_width = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[{*.json,*.json.example,*.gyp,*.yml}]
+indent_style = space
+indent_size = 2
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
+
+# Ideal settings - some plugins might support these.
+[*.js]
+quote_type = single
+
+[{*.c,*.cc,*.h,*.hh,*.cpp,*.hpp,*.m,*.mm,*.mpp,*.js,*.java,*.go,*.rs,*.php,*.ng,*.jsx,*.ts,*.d,*.cs,*.swift}]
+curly_bracket_next_line = false
+spaces_around_operators = true
+spaces_around_brackets = outside
+# close enough to 1TB
+indent_brace_style = K&R

packages/now-cgi/.gitignore

@@ -0,0 +1,2 @@
+node_modules
+handler

packages/now-cgi/build.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+export GOOS=linux
+export GOARCH=amd64
+go build -o handler main.go

packages/now-cgi/index.js

@@ -0,0 +1,42 @@
+const path = require('path');
+const { mkdirp, copyFile } = require('fs-extra');
+
+const glob = require('@now/build-utils/fs/glob');
+const download = require('@now/build-utils/fs/download');
+const { createLambda } = require('@now/build-utils/lambda');
+const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory');
+
+exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
+
+exports.build = async ({ files, entrypoint }) => {
+  console.log('downloading files...');
+  const srcDir = await getWritableDirectory();
+  const outDir = await getWritableDirectory();
+
+  await download(files, srcDir);
+
+  const handlerPath = path.join(__dirname, 'handler');
+  await copyFile(handlerPath, path.join(outDir, 'handler'));
+
+  const entrypointOutDir = path.join(outDir, path.dirname(entrypoint));
+  await mkdirp(entrypointOutDir);
+
+  // For now only the entrypoint file is copied into the lambda
+  await copyFile(
+    path.join(srcDir, entrypoint),
+    path.join(outDir, entrypoint),
+  );
+
+  const lambda = await createLambda({
+    files: await glob('**', outDir),
+    handler: 'handler',
+    runtime: 'go1.x',
+    environment: {
+      SCRIPT_FILENAME: entrypoint,
+    },
+  });
+
+  return {
+    [entrypoint]: lambda,
+  };
+};

packages/now-cgi/main.go

@@ -0,0 +1,152 @@
+package main
+
+import (
+	"os"
+	"fmt"
+	"net"
+	"strings"
+	"io/ioutil"
+	"net/http"
+	"net/http/cgi"
+	"path/filepath"
+	"encoding/json"
+	b64 "encoding/base64"
+	"github.com/aws/aws-lambda-go/events"
+	"github.com/aws/aws-lambda-go/lambda"
+)
+
+type Request struct {
+	Host     string            `json:"host"`
+	Path     string            `json:"path"`
+	Method   string            `json:"method"`
+	Headers  map[string]string `json:"headers"`
+	Encoding string            `json:"encoding,omitempty"`
+	Body     string            `json:"body"`
+}
+
+type Response struct {
+	StatusCode int               `json:"statusCode"`
+	Headers    map[string]string `json:"headers"`
+	Encoding   string            `json:"encoding,omitemtpy"`
+	Body       string            `json:"body"`
+}
+
+type ResponseError struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
+type ResponseErrorWrapper struct {
+	Error ResponseError `json:"error"`
+}
+
+type CgiHandler struct {
+	http.Handler
+	Dir    string
+	Script string
+}
+
+func createErrorResponse(message string, code string, statusCode int) (Response, error) {
+	obj := ResponseErrorWrapper{
+		Error: ResponseError{
+			Code:    code,
+			Message: message,
+		},
+	}
+
+	body, _ := json.Marshal(obj)
+
+	return Response{
+		StatusCode: statusCode,
+		Headers: map[string]string{
+			"Content-Type": "application/json",
+		},
+		Body: string(body),
+	}, nil
+}
+
+func (h *CgiHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	cgih := cgi.Handler{
+		Path: h.Script,
+		Root: "/" + h.Script,
+		Dir: h.Dir,
+		Env: []string{"SERVER_PORT=443"},
+	}
+	cgih.ServeHTTP(w, r)
+}
+
+func main() {
+	l, err := net.Listen("tcp", ":0")
+	if err != nil {
+		panic(err)
+	}
+
+	workdir, _ := filepath.Abs(".")
+	script := os.Getenv("SCRIPT_FILENAME")
+	h := &CgiHandler{nil, workdir, script}
+
+	http.Handle("/", h)
+	go http.Serve(l, nil)
+
+	handler := func(_req events.APIGatewayProxyRequest) (Response, error) {
+		var req Request
+
+		err := json.Unmarshal([]byte(_req.Body), &req)
+
+		if err != nil {
+			fmt.Println(err)
+			return createErrorResponse("Invalid payload", "bad_request", 400)
+		}
+
+		if req.Encoding == "base64" {
+			decoded, _ := b64.StdEncoding.DecodeString(req.Body)
+			req.Body = string(decoded)
+		}
+
+		url := "http://" + l.Addr().String() + req.Path
+
+		internalReq, err := http.NewRequest(req.Method, url, strings.NewReader(req.Body))
+		if err != nil {
+			fmt.Println(err)
+			return createErrorResponse("Bad gateway internal req failed", "bad_gateway", 502)
+		}
+
+		for k, v := range req.Headers {
+			internalReq.Header.Add(k, v)
+			if strings.ToLower(k) == "host" {
+				internalReq.Host = v
+			}
+		}
+
+		client := &http.Client{}
+		internalRes, err := client.Do(internalReq)
+		if err != nil {
+			fmt.Println(err)
+			return createErrorResponse("Bad gateway internal req Do failed", "bad_gateway", 502)
+		}
+		defer internalRes.Body.Close()
+
+		resHeaders := make(map[string]string, len(internalRes.Header))
+		for k, v := range internalRes.Header {
+			// FIXME: support multiple values via concatenating with ','
+			// see RFC 7230, section 3.2.2
+			resHeaders[k] = v[0]
+		}
+
+		bodyBytes, err := ioutil.ReadAll(internalRes.Body)
+		if err != nil {
+			return createErrorResponse("Bad gateway ReadAll bytes from response failed", "bad_gateway", 502)
+		}
+
+		resBody := b64.StdEncoding.EncodeToString(bodyBytes)
+
+		return Response{
+			StatusCode: internalRes.StatusCode,
+			Headers:    resHeaders,
+			Encoding:   "base64",
+			Body:       resBody,
+		}, nil
+	}
+
+	lambda.Start(handler)
+}

packages/now-cgi/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "@now/cgi",
+  "version": "0.0.12",
+  "scripts": {
+    "test": "best -I test/*.js",
+    "prepublish": "./build.sh"
+  },
+  "files": [
+    "index.js",
+    "handler"
+  ],
+  "dependencies": {
+    "fs-extra": "7.0.0"
+  },
+  "devDependencies": {
+    "@zeit/best": "0.4.3",
+    "rmfr": "2.0.0"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
+}

packages/now-cgi/yarn.lock

@@ -0,0 +1,862 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@mrmlnc/readdir-enhanced@^2.2.1":
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz#524af240d1a360527b730475ecfa1344aa540dde"
+  dependencies:
+    call-me-maybe "^1.0.1"
+    glob-to-regexp "^0.3.0"
+
+"@nodelib/fs.stat@^1.0.1":
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
+
+"@zeit/best@0.4.3":
+  version "0.4.3"
+  resolved "http://registry.npmjs.org/@zeit/best/-/best-0.4.3.tgz#eaebdfa8b24121a97b1753501ea8c9330d549b30"
+  dependencies:
+    arg "1.0.0"
+    chalk "2.3.1"
+    diff "3.5.0"
+    globby "8.0.0"
+    signal-exit "3.0.2"
+
+ansi-styles@^3.2.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  dependencies:
+    color-convert "^1.9.0"
+
+append-type@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/append-type/-/append-type-1.0.1.tgz#e29a6eb22cec0c0b9b93063b3cf6b10d9e0c60f4"
+
+arg@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-1.0.0.tgz#444d885a4e25b121640b55155ef7cd03975d6050"
+
+arr-diff@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
+
+arr-flatten@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/arr-flatten/-/arr-flatten-1.1.0.tgz#36048bbff4e7b47e136644316c99669ea5ae91f1"
+
+arr-union@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/arr-union/-/arr-union-3.1.0.tgz#e39b09aea9def866a8f206e288af63919bae39c4"
+
+array-to-sentence@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/array-to-sentence/-/array-to-sentence-1.1.0.tgz#c804956dafa53232495b205a9452753a258d39fc"
+
+array-union@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/array-union/-/array-union-1.0.2.tgz#9a34410e4f4e3da23dea375be5be70f24778ec39"
+  dependencies:
+    array-uniq "^1.0.1"
+
+array-uniq@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/array-uniq/-/array-uniq-1.0.3.tgz#af6ac877a25cc7f74e058894753858dfdb24fdb6"
+
+array-unique@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.3.2.tgz#a894b75d4bc4f6cd679ef3244a9fd8f46ae2d428"
+
+arrify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
+
+assert-valid-glob-opts@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assert-valid-glob-opts/-/assert-valid-glob-opts-1.0.0.tgz#ab9b5438ec5e929f5bb08201819affb1227f730a"
+  dependencies:
+    glob-option-error "^1.0.0"
+    validate-glob-opts "^1.0.0"
+
+assign-symbols@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assign-symbols/-/assign-symbols-1.0.0.tgz#59667f41fadd4f20ccbc2bb96b8d4f7f78ec0367"
+
+atob@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+
+base@^0.11.1:
+  version "0.11.2"
+  resolved "https://registry.yarnpkg.com/base/-/base-0.11.2.tgz#7bde5ced145b6d551a90db87f83c558b4eb48a8f"
+  dependencies:
+    cache-base "^1.0.1"
+    class-utils "^0.3.5"
+    component-emitter "^1.2.1"
+    define-property "^1.0.0"
+    isobject "^3.0.1"
+    mixin-deep "^1.2.0"
+    pascalcase "^0.1.1"
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+braces@^2.3.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/braces/-/braces-2.3.2.tgz#5979fd3f14cd531565e5fa2df1abfff1dfaee729"
+  dependencies:
+    arr-flatten "^1.1.0"
+    array-unique "^0.3.2"
+    extend-shallow "^2.0.1"
+    fill-range "^4.0.0"
+    isobject "^3.0.1"
+    repeat-element "^1.1.2"
+    snapdragon "^0.8.1"
+    snapdragon-node "^2.0.1"
+    split-string "^3.0.2"
+    to-regex "^3.0.1"
+
+cache-base@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
+  dependencies:
+    collection-visit "^1.0.0"
+    component-emitter "^1.2.1"
+    get-value "^2.0.6"
+    has-value "^1.0.0"
+    isobject "^3.0.1"
+    set-value "^2.0.0"
+    to-object-path "^0.3.0"
+    union-value "^1.0.0"
+    unset-value "^1.0.0"
+
+call-me-maybe@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/call-me-maybe/-/call-me-maybe-1.0.1.tgz#26d208ea89e37b5cbde60250a15f031c16a4d66b"
+
+chalk@2.3.1:
+  version "2.3.1"
+  resolved "http://registry.npmjs.org/chalk/-/chalk-2.3.1.tgz#523fe2678aec7b04e8041909292fe8b17059b796"
+  dependencies:
+    ansi-styles "^3.2.0"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.2.0"
+
+class-utils@^0.3.5:
+  version "0.3.6"
+  resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
+  dependencies:
+    arr-union "^3.1.0"
+    define-property "^0.2.5"
+    isobject "^3.0.0"
+    static-extend "^0.1.1"
+
+collection-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
+  dependencies:
+    map-visit "^1.0.0"
+    object-visit "^1.0.0"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  dependencies:
+    color-name "1.1.3"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+
+component-emitter@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+
+copy-descriptor@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
+
+debug@^2.2.0, debug@^2.3.3:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  dependencies:
+    ms "2.0.0"
+
+decode-uri-component@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
+
+define-property@^0.2.5:
+  version "0.2.5"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-0.2.5.tgz#c35b1ef918ec3c990f9a5bc57be04aacec5c8116"
+  dependencies:
+    is-descriptor "^0.1.0"
+
+define-property@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-1.0.0.tgz#769ebaaf3f4a63aad3af9e8d304c9bbe79bfb0e6"
+  dependencies:
+    is-descriptor "^1.0.0"
+
+define-property@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/define-property/-/define-property-2.0.2.tgz#d459689e8d654ba77e02a817f8710d702cb16e9d"
+  dependencies:
+    is-descriptor "^1.0.2"
+    isobject "^3.0.1"
+
+diff@3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+
+dir-glob@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/dir-glob/-/dir-glob-2.0.0.tgz#0b205d2b6aef98238ca286598a8204d29d0a0034"
+  dependencies:
+    arrify "^1.0.1"
+    path-type "^3.0.0"
+
+escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+
+expand-brackets@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-2.1.4.tgz#b77735e315ce30f6b6eff0f83b04151a22449622"
+  dependencies:
+    debug "^2.3.3"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    posix-character-classes "^0.1.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+extend-shallow@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-2.0.1.tgz#51af7d614ad9a9f610ea1bafbb989d6b1c56890f"
+  dependencies:
+    is-extendable "^0.1.0"
+
+extend-shallow@^3.0.0, extend-shallow@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-3.0.2.tgz#26a71aaf073b39fb2127172746131c2704028db8"
+  dependencies:
+    assign-symbols "^1.0.0"
+    is-extendable "^1.0.1"
+
+extglob@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/extglob/-/extglob-2.0.4.tgz#ad00fe4dc612a9232e8718711dc5cb5ab0285543"
+  dependencies:
+    array-unique "^0.3.2"
+    define-property "^1.0.0"
+    expand-brackets "^2.1.4"
+    extend-shallow "^2.0.1"
+    fragment-cache "^0.2.1"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+fast-glob@^2.0.2:
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-2.2.3.tgz#d09d378e9ef6b0076a0fa1ba7519d9d4d9699c28"
+  dependencies:
+    "@mrmlnc/readdir-enhanced" "^2.2.1"
+    "@nodelib/fs.stat" "^1.0.1"
+    glob-parent "^3.1.0"
+    is-glob "^4.0.0"
+    merge2 "^1.2.1"
+    micromatch "^3.1.10"
+
+fill-range@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-4.0.0.tgz#d544811d428f98eb06a63dc402d2403c328c38f7"
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+    to-regex-range "^2.1.0"
+
+for-in@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
+
+fragment-cache@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
+  dependencies:
+    map-cache "^0.2.2"
+
+fs-extra@7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.0.tgz#8cc3f47ce07ef7b3593a11b9fb245f7e34c041d6"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+
+get-value@^2.0.3, get-value@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/get-value/-/get-value-2.0.6.tgz#dc15ca1c672387ca76bd37ac0a395ba2042a2c28"
+
+glob-option-error@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/glob-option-error/-/glob-option-error-1.0.0.tgz#57cc65def9c7d5c1461baf13129bb5403cff6176"
+
+glob-parent@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-3.1.0.tgz#9e6af6299d8d3bd2bd40430832bd113df906c5ae"
+  dependencies:
+    is-glob "^3.1.0"
+    path-dirname "^1.0.0"
+
+glob-to-regexp@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/glob-to-regexp/-/glob-to-regexp-0.3.0.tgz#8c5a1494d2066c570cc3bfe4496175acc4d502ab"
+
+glob@^7.0.5, glob@^7.1.2:
+  version "7.1.3"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+globby@8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-8.0.0.tgz#e6f8340ead9a52fa417ec0e75ae664ae0026f5c6"
+  dependencies:
+    array-union "^1.0.1"
+    dir-glob "^2.0.0"
+    fast-glob "^2.0.2"
+    glob "^7.1.2"
+    ignore "^3.3.5"
+    pify "^3.0.0"
+    slash "^1.0.0"
+
+graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6:
+  version "4.1.14"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.14.tgz#1b6e8362ef8c5ecb5da799901f39297e3054773a"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+
+has-value@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-0.3.1.tgz#7b1f58bada62ca827ec0a2078025654845995e1f"
+  dependencies:
+    get-value "^2.0.3"
+    has-values "^0.1.4"
+    isobject "^2.0.0"
+
+has-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-value/-/has-value-1.0.0.tgz#18b281da585b1c5c51def24c930ed29a0be6b177"
+  dependencies:
+    get-value "^2.0.6"
+    has-values "^1.0.0"
+    isobject "^3.0.0"
+
+has-values@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-0.1.4.tgz#6d61de95d91dfca9b9a02089ad384bff8f62b771"
+
+has-values@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/has-values/-/has-values-1.0.0.tgz#95b0b63fec2146619a6fe57fe75628d5a39efe4f"
+  dependencies:
+    is-number "^3.0.0"
+    kind-of "^4.0.0"
+
+ignore@^3.3.5:
+  version "3.3.10"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.10.tgz#0a97fb876986e8081c631160f8f9f389157f0043"
+
+indexed-filter@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/indexed-filter/-/indexed-filter-1.0.3.tgz#7911439191cac588188464640a8db4f6b324973d"
+  dependencies:
+    append-type "^1.0.1"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+inspect-with-kind@^1.0.4:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/inspect-with-kind/-/inspect-with-kind-1.0.5.tgz#fce151d4ce89722c82ca8e9860bb96f9167c316c"
+  dependencies:
+    kind-of "^6.0.2"
+
+is-accessor-descriptor@^0.1.6:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz#a9e12cb3ae8d876727eeef3843f8a0897b5c98d6"
+  dependencies:
+    kind-of "^3.0.2"
+
+is-accessor-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz#169c2f6d3df1f992618072365c9b0ea1f6878656"
+  dependencies:
+    kind-of "^6.0.0"
+
+is-buffer@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+
+is-data-descriptor@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
+  dependencies:
+    kind-of "^3.0.2"
+
+is-data-descriptor@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz#d84876321d0e7add03990406abbbbd36ba9268c7"
+  dependencies:
+    kind-of "^6.0.0"
+
+is-descriptor@^0.1.0:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
+  dependencies:
+    is-accessor-descriptor "^0.1.6"
+    is-data-descriptor "^0.1.4"
+    kind-of "^5.0.0"
+
+is-descriptor@^1.0.0, is-descriptor@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-1.0.2.tgz#3b159746a66604b04f8c81524ba365c5f14d86ec"
+  dependencies:
+    is-accessor-descriptor "^1.0.0"
+    is-data-descriptor "^1.0.0"
+    kind-of "^6.0.2"
+
+is-extendable@^0.1.0, is-extendable@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
+
+is-extendable@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-1.0.1.tgz#a7470f9e426733d81bd81e1155264e3a3507cab4"
+  dependencies:
+    is-plain-object "^2.0.4"
+
+is-extglob@^2.1.0, is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+
+is-glob@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-3.1.0.tgz#7ba5ae24217804ac70707b96922567486cc3e84a"
+  dependencies:
+    is-extglob "^2.1.0"
+
+is-glob@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.0.tgz#9521c76845cc2610a85203ddf080a958c2ffabc0"
+  dependencies:
+    is-extglob "^2.1.1"
+
+is-number@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-number/-/is-number-3.0.0.tgz#24fd6201a4782cf50561c810276afc7d12d71195"
+  dependencies:
+    kind-of "^3.0.2"
+
+is-plain-obj@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"
+
+is-plain-object@^2.0.1, is-plain-object@^2.0.3, is-plain-object@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-2.0.4.tgz#2c163b3fafb1b606d9d17928f05c2a1c38e07677"
+  dependencies:
+    isobject "^3.0.1"
+
+is-windows@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
+
+isarray@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+
+isobject@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-2.1.0.tgz#f065561096a3f1da2ef46272f815c840d87e0c89"
+  dependencies:
+    isarray "1.0.0"
+
+isobject@^3.0.0, isobject@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
+
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
+kind-of@^3.0.2, kind-of@^3.0.3, kind-of@^3.2.0:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-4.0.0.tgz#20813df3d712928b207378691a45066fae72dd57"
+  dependencies:
+    is-buffer "^1.1.5"
+
+kind-of@^5.0.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-5.1.0.tgz#729c91e2d857b7a419a1f9aa65685c4c33f5845d"
+
+kind-of@^6.0.0, kind-of@^6.0.2:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
+
+map-cache@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
+
+map-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
+  dependencies:
+    object-visit "^1.0.0"
+
+merge2@^1.2.1:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/merge2/-/merge2-1.2.3.tgz#7ee99dbd69bb6481689253f018488a1b902b0ed5"
+
+micromatch@^3.1.10:
+  version "3.1.10"
+  resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-3.1.10.tgz#70859bc95c9840952f359a068a3fc49f9ecfac23"
+  dependencies:
+    arr-diff "^4.0.0"
+    array-unique "^0.3.2"
+    braces "^2.3.1"
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    extglob "^2.0.4"
+    fragment-cache "^0.2.1"
+    kind-of "^6.0.2"
+    nanomatch "^1.2.9"
+    object.pick "^1.3.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.2"
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  dependencies:
+    brace-expansion "^1.1.7"
+
+mixin-deep@^1.2.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/mixin-deep/-/mixin-deep-1.3.1.tgz#a49e7268dce1a0d9698e45326c5626df3543d0fe"
+  dependencies:
+    for-in "^1.0.2"
+    is-extendable "^1.0.1"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+nanomatch@^1.2.9:
+  version "1.2.13"
+  resolved "https://registry.yarnpkg.com/nanomatch/-/nanomatch-1.2.13.tgz#b87a8aa4fc0de8fe6be88895b38983ff265bd119"
+  dependencies:
+    arr-diff "^4.0.0"
+    array-unique "^0.3.2"
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    fragment-cache "^0.2.1"
+    is-windows "^1.0.2"
+    kind-of "^6.0.2"
+    object.pick "^1.3.0"
+    regex-not "^1.0.0"
+    snapdragon "^0.8.1"
+    to-regex "^3.0.1"
+
+object-copy@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/object-copy/-/object-copy-0.1.0.tgz#7e7d858b781bd7c991a41ba975ed3812754e998c"
+  dependencies:
+    copy-descriptor "^0.1.0"
+    define-property "^0.2.5"
+    kind-of "^3.0.3"
+
+object-visit@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
+  dependencies:
+    isobject "^3.0.0"
+
+object.pick@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/object.pick/-/object.pick-1.3.0.tgz#87a10ac4c1694bd2e1cbf53591a66141fb5dd747"
+  dependencies:
+    isobject "^3.0.1"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  dependencies:
+    wrappy "1"
+
+pascalcase@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
+
+path-dirname@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/path-dirname/-/path-dirname-1.0.2.tgz#cc33d24d525e099a5388c0336c6e32b9160609e0"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+
+path-type@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-type/-/path-type-3.0.0.tgz#cef31dc8e0a1a3bb0d105c0cd97cf3bf47f4e36f"
+  dependencies:
+    pify "^3.0.0"
+
+pify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
+
+posix-character-classes@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
+
+regex-not@^1.0.0, regex-not@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
+  dependencies:
+    extend-shallow "^3.0.2"
+    safe-regex "^1.1.0"
+
+repeat-element@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/repeat-element/-/repeat-element-1.1.3.tgz#782e0d825c0c5a3bb39731f84efee6b742e6b1ce"
+
+repeat-string@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
+
+resolve-url@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
+
+ret@~0.1.10:
+  version "0.1.15"
+  resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
+
+rimraf@^2.6.2:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
+  dependencies:
+    glob "^7.0.5"
+
+rmfr@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/rmfr/-/rmfr-2.0.0.tgz#8a42e81332550b3f0019b8fb8ab245bea81b6d1c"
+  dependencies:
+    assert-valid-glob-opts "^1.0.0"
+    glob "^7.1.2"
+    graceful-fs "^4.1.11"
+    inspect-with-kind "^1.0.4"
+    rimraf "^2.6.2"
+
+safe-regex@^1.1.0:
+  version "1.1.0"
+  resolved "http://registry.npmjs.org/safe-regex/-/safe-regex-1.1.0.tgz#40a3669f3b077d1e943d44629e157dd48023bf2e"
+  dependencies:
+    ret "~0.1.10"
+
+set-value@^0.4.3:
+  version "0.4.3"
+  resolved "https://registry.yarnpkg.com/set-value/-/set-value-0.4.3.tgz#7db08f9d3d22dc7f78e53af3c3bf4666ecdfccf1"
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-extendable "^0.1.1"
+    is-plain-object "^2.0.1"
+    to-object-path "^0.3.0"
+
+set-value@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/set-value/-/set-value-2.0.0.tgz#71ae4a88f0feefbbf52d1ea604f3fb315ebb6274"
+  dependencies:
+    extend-shallow "^2.0.1"
+    is-extendable "^0.1.1"
+    is-plain-object "^2.0.3"
+    split-string "^3.0.1"
+
+signal-exit@3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
+
+slash@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
+
+snapdragon-node@^2.0.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
+  dependencies:
+    define-property "^1.0.0"
+    isobject "^3.0.0"
+    snapdragon-util "^3.0.1"
+
+snapdragon-util@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/snapdragon-util/-/snapdragon-util-3.0.1.tgz#f956479486f2acd79700693f6f7b805e45ab56e2"
+  dependencies:
+    kind-of "^3.2.0"
+
+snapdragon@^0.8.1:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/snapdragon/-/snapdragon-0.8.2.tgz#64922e7c565b0e14204ba1aa7d6964278d25182d"
+  dependencies:
+    base "^0.11.1"
+    debug "^2.2.0"
+    define-property "^0.2.5"
+    extend-shallow "^2.0.1"
+    map-cache "^0.2.2"
+    source-map "^0.5.6"
+    source-map-resolve "^0.5.0"
+    use "^3.1.0"
+
+source-map-resolve@^0.5.0:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.2.tgz#72e2cc34095543e43b2c62b2c4c10d4a9054f259"
+  dependencies:
+    atob "^2.1.1"
+    decode-uri-component "^0.2.0"
+    resolve-url "^0.2.1"
+    source-map-url "^0.4.0"
+    urix "^0.1.0"
+
+source-map-url@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
+
+source-map@^0.5.6:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+
+split-string@^3.0.1, split-string@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"
+  dependencies:
+    extend-shallow "^3.0.0"
+
+static-extend@^0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
+  dependencies:
+    define-property "^0.2.5"
+    object-copy "^0.1.0"
+
+supports-color@^5.2.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  dependencies:
+    has-flag "^3.0.0"
+
+to-object-path@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"
+  dependencies:
+    kind-of "^3.0.2"
+
+to-regex-range@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/to-regex-range/-/to-regex-range-2.1.1.tgz#7c80c17b9dfebe599e27367e0d4dd5590141db38"
+  dependencies:
+    is-number "^3.0.0"
+    repeat-string "^1.6.1"
+
+to-regex@^3.0.1, to-regex@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/to-regex/-/to-regex-3.0.2.tgz#13cfdd9b336552f30b51f33a8ae1b42a7a7599ce"
+  dependencies:
+    define-property "^2.0.2"
+    extend-shallow "^3.0.2"
+    regex-not "^1.0.2"
+    safe-regex "^1.1.0"
+
+union-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"
+  dependencies:
+    arr-union "^3.1.0"
+    get-value "^2.0.6"
+    is-extendable "^0.1.1"
+    set-value "^0.4.3"
+
+universalify@^0.1.0:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
+
+unset-value@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
+  dependencies:
+    has-value "^0.3.1"
+    isobject "^3.0.0"
+
+urix@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
+
+use@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
+
+validate-glob-opts@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/validate-glob-opts/-/validate-glob-opts-1.0.2.tgz#ef9f98977d965537ea4f51fa7d5799e9c6ebca91"
+  dependencies:
+    array-to-sentence "^1.1.0"
+    indexed-filter "^1.0.0"
+    inspect-with-kind "^1.0.4"
+    is-plain-obj "^1.1.0"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"

packages/now-go/download-go-bin.js

@@ -1,14 +1,14 @@
-const path = require('path')
+const path = require('path');
 
-const fetch = require('node-fetch')
-const tar = require('tar')
+const fetch = require('node-fetch');
+const tar = require('tar');
 const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js');
 
-const url = 'https://dl.google.com/go/go1.11.1.linux-amd64.tar.gz'
+const url = 'https://dl.google.com/go/go1.11.1.linux-amd64.tar.gz';
 
 module.exports = async () => {
-  const res = await fetch(url)
-  const dir = await getWritableDirectory()
+  const res = await fetch(url);
+  const dir = await getWritableDirectory();
 
   if (!res.ok) {
     throw new Error(`Failed to download: ${url}`);
@@ -19,6 +19,5 @@ module.exports = async () => {
       .on('error', reject)
       .pipe(tar.extract({ cwd: dir, strip: 1 }))
       .on('finish', () => resolve(path.join(dir, 'bin', 'go')));
-  })
-
-}
+  });
+};

packages/now-go/index.js

@@ -1,120 +1,136 @@
-const path = require("path")
-const { mkdirp, readFile, writeFile } = require('fs-extra')
+const path = require('path');
+const { mkdirp, readFile, writeFile } = require('fs-extra');
 
-const execa = require('execa')
+const execa = require('execa');
 const { createLambda } = require('@now/build-utils/lambda.js');
 const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js');
 const download = require('@now/build-utils/fs/download.js');
-const downloadGit = require("lambda-git")
-const downloadGoBin = require("./download-go-bin")
+const downloadGit = require('lambda-git');
 const glob = require('@now/build-utils/fs/glob.js');
-
-const goFilenames = new Set([
-  'go.mod',
-  'go.sum',
-  'Gopkg.lock',
-  'Gopkg.toml'
-]);
+const downloadGoBin = require('./download-go-bin');
 
 // creates a `$GOPATH` direcotry tree, as per
 // `go help gopath`'s instructions.
 // without this, Go won't recognize the `$GOPATH`
 async function createGoPathTree(goPath) {
-  await mkdirp(path.join(goPath, 'bin'))
-  await mkdirp(path.join(goPath, 'pkg', 'linux_amd64'))
+  await mkdirp(path.join(goPath, 'bin'));
+  await mkdirp(path.join(goPath, 'pkg', 'linux_amd64'));
 }
 
-exports.build = async ({files, entrypoint, config}) => {
-  console.log('downloading files...')
+exports.config = {
+  maxLambdaSize: '10mb',
+};
 
-  const gitPath = await getWritableDirectory()
-  const goPath = await getWritableDirectory()
-  const srcPath = path.join(goPath, 'src', 'lambda')
-  const outDir = await getWritableDirectory()
+exports.build = async ({ files, entrypoint }) => {
+  console.log('downloading files...');
 
-  await createGoPathTree(goPath)
+  const gitPath = await getWritableDirectory();
+  const goPath = await getWritableDirectory();
+  const srcPath = path.join(goPath, 'src', 'lambda');
+  const outDir = await getWritableDirectory();
 
-  files = await download(files, srcPath)
+  await createGoPathTree(goPath);
 
-  console.log('downloading go binary...')
-  const goBin = await downloadGoBin()
+  const downloadedFiles = await download(files, srcPath);
 
-  console.log('downloading git binary...')
+  console.log('downloading go binary...');
+  const goBin = await downloadGoBin();
+
+  console.log('downloading git binary...');
   // downloads a git binary that works on Amazon Linux and sets
   // `process.env.GIT_EXEC_PATH` so `go(1)` can see it
-  await downloadGit({targetDirectory: gitPath})
+  await downloadGit({ targetDirectory: gitPath });
 
   const goEnv = {
     ...process.env,
     GOOS: 'linux',
     GOARCH: 'amd64',
-    GOPATH: goPath
-  }
+    GOPATH: goPath,
+  };
 
-  console.log(`parsing AST for \"${entrypoint}\"`)
-  let handlerFunctionName = ''
+  console.log(`parsing AST for "${entrypoint}"`);
+  let handlerFunctionName = '';
   try {
     handlerFunctionName = await execa.stdout(
       path.join(__dirname, 'bin', 'get-exported-function-name'),
-      [files[entrypoint].fsPath]
-    )
+      [downloadedFiles[entrypoint].fsPath],
+    );
   } catch (err) {
-    console.log(`failed to parse AST for \"${entrypoint}\"`)
-    throw err
+    console.log(`failed to parse AST for "${entrypoint}"`);
+    throw err;
   }
 
   if (handlerFunctionName === '') {
-    const e = new Error(`Could not find an exported function on "${entrypoint}"`)
-    console.log(e.message)
-    throw e
+    const e = new Error(
+      `Could not find an exported function on "${entrypoint}"`,
+    );
+    console.log(e.message);
+    throw e;
   }
 
-  console.log(`Found exported function "${handlerFunctionName}" on \"${entrypoint}\"`)
+  console.log(
+    `Found exported function "${handlerFunctionName}" on "${entrypoint}"`,
+  );
 
-  const origianlMainGoContents = await readFile(path.join(__dirname, 'main.go'), 'utf8')
-  const mainGoContents = origianlMainGoContents.replace('__NOW_HANDLER_FUNC_NAME', handlerFunctionName)
+  const origianlMainGoContents = await readFile(
+    path.join(__dirname, 'main.go'),
+    'utf8',
+  );
+  const mainGoContents = origianlMainGoContents.replace(
+    '__NOW_HANDLER_FUNC_NAME',
+    handlerFunctionName,
+  );
   // in order to allow the user to have `main.go`, we need our `main.go` to be called something else
-  const mainGoFileName = 'main__now__go__.go'
+  const mainGoFileName = 'main__now__go__.go';
 
   // we need `main.go` in the same dir as the entrypoint,
   // otherwise `go build` will refuse to build
-  const entrypointDirname = path.dirname(files[entrypoint].fsPath)
+  const entrypointDirname = path.dirname(downloadedFiles[entrypoint].fsPath);
 
   // Go doesn't like to build files in different directories,
   // so now we place `main.go` together with the user code
-  await writeFile(path.join(entrypointDirname, mainGoFileName), mainGoContents)
+  await writeFile(path.join(entrypointDirname, mainGoFileName), mainGoContents);
 
-
-  console.log('installing dependencies')
+  console.log('installing dependencies');
   // `go get` will look at `*.go` (note we set `cwd`), parse
   // the `import`s and download any packages that aren't part of the stdlib
   try {
-    await execa(goBin, ['get'], {env: goEnv, cwd: entrypointDirname, stdio: 'inherit'});
-  } catch (err) { 
-    console.log('failed to `go get`')
-    throw err
+    await execa(goBin, ['get'], {
+      env: goEnv,
+      cwd: entrypointDirname,
+      stdio: 'inherit',
+    });
+  } catch (err) {
+    console.log('failed to `go get`');
+    throw err;
   }
 
-  console.log('running go build...')
+  console.log('running go build...');
   try {
-    await execa(goBin, [
-      'build',
-      '-o', path.join(outDir, 'handler'),
-      path.join(entrypointDirname, mainGoFileName), files[entrypoint].fsPath
-    ], {env: goEnv, cwd: entrypointDirname, stdio: 'inherit'})
-  } catch (err) { 
-    console.log('failed to `go build`')
-    throw err
+    await execa(
+      goBin,
+      [
+        'build',
+        '-o',
+        path.join(outDir, 'handler'),
+        path.join(entrypointDirname, mainGoFileName),
+        downloadedFiles[entrypoint].fsPath,
+      ],
+      { env: goEnv, cwd: entrypointDirname, stdio: 'inherit' },
+    );
+  } catch (err) {
+    console.log('failed to `go build`');
+    throw err;
   }
-  
+
   const lambda = await createLambda({
     files: await glob('**', outDir),
     handler: 'handler',
     runtime: 'go1.x',
-    environment: {}
-  })
+    environment: {},
+  });
 
   return {
-    [entrypoint]: lambda
-  }
-}
+    [entrypoint]: lambda,
+  };
+};

packages/now-go/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/go",
-  "version": "0.2.7-canary.3",
+  "version": "0.2.9",
   "scripts": {
     "test": "best -I test/*.js",
     "prepublish": "./build.sh"
@@ -16,11 +16,14 @@
     "fs-extra": "^7.0.0",
     "lambda-git": "^0.1.2",
     "mkdirp-promise": "5.0.1",
-    "now-fetch": "0.1.1",
+    "node-fetch": "^2.2.1",
     "tar": "4.4.6"
   },
   "devDependencies": {
     "@zeit/best": "0.4.3",
     "rmfr": "2.0.0"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-html-minifier/index.js

@@ -2,32 +2,30 @@ const FileBlob = require('@now/build-utils/file-blob.js');
 const { minify } = require('html-minifier');
 
 const defaultOptions = {
-    minifyCSS: true,
-    minifyJS: true,
-    removeComments: true,
-    removeAttributeQuotes: true,
-    removeEmptyAttributes: true,
-    removeOptionalTags: true,
-    removeRedundantAttributes: true,
-    useShortDoctype: true,
-    collapseWhitespace: true,
-    collapseInlineTagWhitespace: true,
-    collapseBooleanAttributes: true,
-    caseSensitive: true
+  minifyCSS: true,
+  minifyJS: true,
+  removeComments: true,
+  removeAttributeQuotes: true,
+  removeEmptyAttributes: true,
+  removeOptionalTags: true,
+  removeRedundantAttributes: true,
+  useShortDoctype: true,
+  collapseWhitespace: true,
+  collapseInlineTagWhitespace: true,
+  collapseBooleanAttributes: true,
+  caseSensitive: true,
 };
 
-exports.analyze = ({ files, entrypoint }) => {
-  return files[entrypoint].digest;
-};
+exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
 
 exports.build = async ({ files, entrypoint, config }) => {
-    const stream = files[entrypoint].toStream();
-    const options = Object.assign({}, defaultOptions, config || {});
-    const { data } = await FileBlob.fromStream({ stream });
-    const content = data.toString();
+  const stream = files[entrypoint].toStream();
+  const options = Object.assign({}, defaultOptions, config || {});
+  const { data } = await FileBlob.fromStream({ stream });
+  const content = data.toString();
 
-    const minified = minify(content, options);
-    const result = new FileBlob({ data: minified });
+  const minified = minify(content, options);
+  const result = new FileBlob({ data: minified });
 
-    return { [entrypoint]: result };
+  return { [entrypoint]: result };
 };

packages/now-html-minifier/package.json

@@ -1,7 +1,10 @@
 {
   "name": "@now/html-minifier",
-  "version": "1.0.3-canary.3",
+  "version": "1.0.5",
   "dependencies": {
     "html-minifier": "3.5.21"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-lambda/index.js

@@ -1,24 +1,12 @@
 const { Lambda } = require('@now/build-utils/lambda.js');
-const path = require('path');
+const streamToBuffer = require('@now/build-utils/fs/stream-to-buffer.js');
 
-exports.build = async ({ files, entrypoint }) => {
+exports.build = async ({ files, entrypoint, config }) => {
   if (!files[entrypoint]) throw new Error('Entrypoint not found in files');
-
-  // handler=launcher.main!runtime=nodejs8.10!name.zip
-  const config = path.basename(entrypoint).split('!').reduce((a, c) => {
-    const [ k, v ] = c.split('=');
-    if (v) a[k] = v;
-    return a;
-  }, {});
-
-  if (!config.handler) throw new Error('Handler not found in config');
-  if (!config.runtime) throw new Error('Runtime not found in config');
-
-  const lambda = new Lambda({
-    zipStream: files[entrypoint].toStream(), // TODO zipBuffer
-    handler: config.handler,
-    runtime: config.runtime
-  });
-
+  const { handler, runtime } = config;
+  if (!handler) throw new Error('Handler not found in config');
+  if (!runtime) throw new Error('Runtime not found in config');
+  const zipBuffer = await streamToBuffer(files[entrypoint].toStream());
+  const lambda = new Lambda({ zipBuffer, handler, runtime });
   return { [entrypoint]: lambda };
 };

packages/now-lambda/package.json

@@ -1,4 +1,7 @@
 {
   "name": "@now/lambda",
-  "version": "0.4.4-canary.3"
+  "version": "0.4.6",
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
 }

packages/now-md/index.js

@@ -1,37 +1,42 @@
 const FileBlob = require('@now/build-utils/file-blob.js');
-const unified = require('unified')
-const unifiedStream = require('unified-stream')
-const markdown = require('remark-parse')
-const remark2rehype = require('remark-rehype')
-const doc = require('rehype-document')
-const format = require('rehype-format')
-const html = require('rehype-stringify')
+const unified = require('unified');
+const unifiedStream = require('unified-stream');
+const markdown = require('remark-parse');
+const remark2rehype = require('remark-rehype');
+const doc = require('rehype-document');
+const format = require('rehype-format');
+const html = require('rehype-stringify');
 
-exports.analyze = ({ files, entrypoint }) => {
-  return files[entrypoint].digest;
-};
+exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
 
 exports.build = async ({ files, entrypoint, config }) => {
   const stream = files[entrypoint].toStream();
-  const options = config || {}
+  const options = config || {};
 
-  const title = options.title || null
-  const language = options.language || 'en'
-  const meta = options.meta || null
-  const css = options.css || null
+  const title = options.title || null;
+  const language = options.language || 'en';
+  const meta = options.meta || null;
+  const css = options.css || null;
 
   const processor = unified()
     .use(markdown)
     .use(remark2rehype)
-    .use(doc, { title, language, meta, css })
+    .use(doc, {
+      title,
+      language,
+      meta,
+      css,
+    })
     .use(format)
     .use(html);
 
-  const result = await FileBlob.fromStream({ stream: stream.pipe(unifiedStream(processor)) });
+  const result = await FileBlob.fromStream({
+    stream: stream.pipe(unifiedStream(processor)),
+  });
 
-  console.log(result.data.toString())
+  console.log(result.data.toString());
 
-  entrypoint = entrypoint.replace(/\.[^\.]+$/, '.html');
+  const replacedEntrypoint = entrypoint.replace(/\.[^.]+$/, '.html');
 
-  return { [entrypoint]: result };
+  return { [replacedEntrypoint]: result };
 };

packages/now-md/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/md",
-  "version": "0.4.4-canary.3",
+  "version": "0.4.6",
   "dependencies": {
     "rehype-document": "^2.2.0",
     "rehype-format": "^2.3.0",
@@ -9,5 +9,8 @@
     "remark-rehype": "^3.0.1",
     "unified": "^7.0.0",
     "unified-stream": "^1.0.2"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-mdx-deck/index.js

@@ -6,39 +6,43 @@ const glob = require('@now/build-utils/fs/glob.js');
 const path = require('path');
 const { runNpmInstall } = require('@now/build-utils/fs/run-user-scripts.js');
 
-exports.analyze = ({ files, entrypoint }) => {
-  return files[entrypoint].digest;
-};
+exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
 
 const writeFile = promisify(fs.writeFile);
 
 exports.build = async ({ files, entrypoint, workPath }) => {
   console.log('downloading user files...');
-  files = await download(files, workPath);
+  const downloadedFiles = await download(files, workPath);
   console.log('writing package.json...');
   const packageJson = { dependencies: { 'mdx-deck': '1.7.7' } };
   const packageJsonPath = path.join(workPath, 'package.json');
   await writeFile(packageJsonPath, JSON.stringify(packageJson));
   console.log('running npm install...');
   process.env.PUPPETEER_SKIP_CHROMIUM_DOWNLOAD = '1'; // TODO opts argument for runNpmInstall
-  await runNpmInstall(path.dirname(packageJsonPath), [ '--prod', '--prefer-offline' ]);
+  await runNpmInstall(path.dirname(packageJsonPath), [
+    '--prod',
+    '--prefer-offline',
+  ]);
   console.log('building...');
   const outDir = await getWritableDirectory();
-  const entrypointFsPath = files[entrypoint].fsPath;
+  const entrypointFsPath = downloadedFiles[entrypoint].fsPath;
   const mountpoint = path.dirname(entrypoint);
 
-  const build = require(path.join(workPath, 'node_modules/mdx-deck/lib/build.js'));
+  const build = require(path.join(
+    workPath,
+    'node_modules/mdx-deck/lib/build.js',
+  ));
 
   await build({
     html: true,
     dirname: workPath,
     outDir,
     globals: {
-      FILENAME: JSON.stringify(entrypointFsPath)
-    }
+      FILENAME: JSON.stringify(entrypointFsPath),
+    },
   });
 
-  return await glob('**', outDir, mountpoint);
+  return glob('**', outDir, mountpoint);
 };
 
 exports.prepareCache = async ({ cachePath }) => {
@@ -47,11 +51,11 @@ exports.prepareCache = async ({ cachePath }) => {
   const packageJsonPath = path.join(cachePath, 'package.json');
   await writeFile(packageJsonPath, JSON.stringify(packageJson));
   console.log('running npm install...');
-  await runNpmInstall(path.dirname(packageJsonPath), [ '--prod' ]);
+  await runNpmInstall(path.dirname(packageJsonPath), ['--prod']);
 
   return {
-    ...await glob('node_modules/**', cachePath),
-    ...await glob('package-lock.json', cachePath),
-    ...await glob('yarn.lock', cachePath)
+    ...(await glob('node_modules/**', cachePath)),
+    ...(await glob('package-lock.json', cachePath)),
+    ...(await glob('yarn.lock', cachePath)),
   };
 };

packages/now-mdx-deck/package.json

@@ -1,4 +1,7 @@
 {
   "name": "@now/mdx-deck",
-  "version": "0.4.13-canary.3"
+  "version": "0.4.15",
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
 }

packages/now-next/index.js

@@ -1,161 +1,206 @@
 const { createLambda } = require('@now/build-utils/lambda.js');
 const download = require('@now/build-utils/fs/download.js');
 const FileFsRef = require('@now/build-utils/file-fs-ref.js');
+const FileBlob = require('@now/build-utils/file-blob');
 const path = require('path');
 const { readFile, writeFile, unlink } = require('fs.promised');
-const rename = require('@now/build-utils/fs/rename.js');
-const { runNpmInstall, runPackageJsonScript
+const {
+  runNpmInstall,
+  runPackageJsonScript,
 } = require('@now/build-utils/fs/run-user-scripts.js');
 const glob = require('@now/build-utils/fs/glob.js');
+const {
+  excludeFiles,
+  validateEntrypoint,
+  includeOnlyEntryDirectory,
+  moveEntryDirectoryToRoot,
+  excludeLockFiles,
+  normalizePackageJson,
+  excludeStaticDirectory,
+} = require('./utils');
 
-// Exclude certain files from the files object
-function excludeFiles(files, matchFn) {
-  return Object.keys(files).reduce((newFiles, fileName) => {
-    if(matchFn(fileName)) {
-      return newFiles
-    }
-    newFiles[fileName] = files[fileName]
-    return newFiles
-  }, {})
+/** @typedef { import('@now/build-utils/file-ref').Files } Files */
+/** @typedef { import('@now/build-utils/fs/download').DownloadedFiles } DownloadedFiles */
+
+/**
+ * @typedef {Object} BuildParamsType
+ * @property {Files} files - Files object
+ * @property {string} entrypoint - Entrypoint specified for the builder
+ * @property {string} workPath - Working directory for this build
+ */
+
+/**
+ * Read package.json from files
+ * @param {DownloadedFiles} files
+ */
+async function readPackageJson(files) {
+  if (!files['package.json']) {
+    return {};
+  }
+
+  const packageJsonPath = files['package.json'].fsPath;
+  return JSON.parse(await readFile(packageJsonPath, 'utf8'));
 }
 
+/**
+ * Write package.json
+ * @param {string} workPath
+ * @param {Object} packageJson
+ */
+async function writePackageJson(workPath, packageJson) {
+  await writeFile(
+    path.join(workPath, 'package.json'),
+    JSON.stringify(packageJson, null, 2),
+  );
+}
+
+/**
+ * Write .npmrc with npm auth token
+ * @param {string} workPath
+ * @param {string} token
+ */
+async function writeNpmRc(workPath, token) {
+  await writeFile(
+    path.join(workPath, '.npmrc'),
+    `//registry.npmjs.org/:_authToken=${token}`,
+  );
+}
+
+/**
+ * @param {BuildParamsType} buildParams
+ * @returns {Promise<Files>}
+ */
 exports.build = async ({ files, workPath, entrypoint }) => {
-  if(!/package\.json$/.exec(entrypoint) && !/next\.config\.js$/.exec(entrypoint)) {
-    throw new Error(`Specified "src" for "@now/next" has to be "package.json" or "next.config.js"`)
-  }
+  validateEntrypoint(entrypoint);
 
-  const entryDirectory = path.dirname(entrypoint)
   console.log('downloading user files...');
-  const filesToDownload = excludeFiles(files, (file) => {
-    // If the file is not in the entry directory
-    if(entryDirectory !== '.' && !file.startsWith(entryDirectory)) {
-      return true
-    }
+  const entryDirectory = path.dirname(entrypoint);
+  const filesOnlyEntryDirectory = includeOnlyEntryDirectory(
+    files,
+    entryDirectory,
+  );
+  const filesWithEntryDirectoryRoot = moveEntryDirectoryToRoot(
+    filesOnlyEntryDirectory,
+    entryDirectory,
+  );
+  const filesWithoutLockfiles = excludeLockFiles(filesWithEntryDirectoryRoot);
+  const filesWithoutStaticDirectory = excludeStaticDirectory(
+    filesWithoutLockfiles,
+  );
+  let downloadedFiles = await download(filesWithoutStaticDirectory, workPath);
 
-    // Exclude static directory
-    if(file.startsWith(path.join(entryDirectory, 'static'))) {
-      return true
-    }
+  console.log('normalizing package.json');
+  const packageJson = normalizePackageJson(readPackageJson(downloadedFiles));
+  await writePackageJson(workPath, packageJson);
 
-    if(file === 'package-lock.json') {
-      return true
-    }
-
-    if(file === 'yarn.lock') {
-      return true
-    }
-
-    return false
-  })
-  files = await download(rename(filesToDownload, (file) => {
-    if(entryDirectory !== '.') {
-      return file.replace(new RegExp(`^${entryDirectory}/`), '')
-    }
-    return file
-  }), workPath);
-
-  let packageJson = {}
-  if (files['package.json']) {
-    console.log('found package.json, overwriting')
-    const packageJsonPath = files['package.json'].fsPath
-    packageJson = JSON.parse(await readFile(packageJsonPath, 'utf8'))
+  if (process.env.NPM_AUTH_TOKEN) {
+    console.log('found NPM_AUTH_TOKEN in environment, creating .npmrc');
+    await writeNpmRc(workPath, process.env.NPM_AUTH_TOKEN);
   }
 
-  packageJson = {
-    ...packageJson,
-    dependencies: {
-      ...packageJson.dependencies,
-      'next-server': 'canary'
-    },
-    devDependencies: {
-      ...packageJson.devDependencies,
-      'next': 'canary'
-    },
-    scripts: {
-      ...packageJson.scripts,
-      'now-build': 'next build'
-    }
-  }
-
-  if(!packageJson.dependencies.react) {
-    console.log('"react" not found in dependencies, adding to "package.json" "dependencies"')
-    packageJson.dependencies['react'] = 'latest'
-  }
-  if(!packageJson.dependencies['react-dom']) {
-    console.log('"react-dom" not found in dependencies, adding to "package.json" "dependencies"')
-    packageJson.dependencies['react-dom'] = 'latest'
-  }
-
-  // in case the user has `next` on their `dependencies`, we remove it
-  delete packageJson.dependencies.next
-
-  console.log('>>>>>>', JSON.stringify(packageJson))
-  await writeFile(path.join(workPath, 'package.json'), JSON.stringify(packageJson, null, 2))
-
-  if(process.env.NPM_AUTH_TOKEN) {
-    console.log('found NPM_AUTH_TOKEN in environement, creating .npmrc')
-    await writeFile(path.join(workPath, '.npmrc'), `//registry.npmjs.org/:_authToken=${process.env.NPM_AUTH_TOKEN}`)
-  }
-  files = await glob('**', workPath);
+  downloadedFiles = await glob('**', workPath);
 
   console.log('running npm install...');
-  await runNpmInstall(workPath, [ '--prefer-offline' ]);
+  await runNpmInstall(workPath, ['--prefer-offline']);
   console.log('running user script...');
   await runPackageJsonScript(workPath, 'now-build');
   console.log('running npm install --production...');
-  await runNpmInstall(workPath, [ '--prefer-offline', '--production' ]);
-  if(process.env.NPM_AUTH_TOKEN) {
-    await unlink(path.join(workPath, '.npmrc'))
+  await runNpmInstall(workPath, ['--prefer-offline', '--production']);
+  if (process.env.NPM_AUTH_TOKEN) {
+    await unlink(path.join(workPath, '.npmrc'));
   }
-  files = await glob('**', workPath)
+
+  downloadedFiles = await glob('**', workPath);
 
   console.log('preparing lambda files...');
-  let buildId
+  let buildId;
   try {
-    buildId = await readFile(path.join(workPath, '.next', 'BUILD_ID'), 'utf8')
-  } catch(err) {
-    console.error(`BUILD_ID not found in ".next". The "package.json" "build" script did not run "next build"`)
-    throw new Error('Missing BUILD_ID')
+    buildId = await readFile(path.join(workPath, '.next', 'BUILD_ID'), 'utf8');
+  } catch (err) {
+    console.error(
+      'BUILD_ID not found in ".next". The "package.json" "build" script did not run "next build"',
+    );
+    throw new Error('Missing BUILD_ID');
   }
-  const dotNextRootFiles = await glob('.next/*', workPath)  
-  const dotNextServerRootFiles = await glob('.next/server/*', workPath)
-  const nodeModules = excludeFiles(await glob('node_modules/**', workPath), (file) => file.startsWith('node_modules/.cache'))
+  const dotNextRootFiles = await glob('.next/*', workPath);
+  const dotNextServerRootFiles = await glob('.next/server/*', workPath);
+  const nodeModules = excludeFiles(
+    await glob('node_modules/**', workPath),
+    file => file.startsWith('node_modules/.cache'),
+  );
   const launcherFiles = {
-    'now__launcher.js': new FileFsRef({ fsPath: path.join(__dirname, 'launcher.js') }),
-    'now__bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') })
+    'now__bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') }),
   };
-  const nextFiles = {...nodeModules, ...dotNextRootFiles, ...dotNextServerRootFiles, ...launcherFiles}
-  if(files['next.config.js']) {
-    nextFiles['next.config.js'] = files['next.config.js']
+  const nextFiles = {
+    ...nodeModules,
+    ...dotNextRootFiles,
+    ...dotNextServerRootFiles,
+    ...launcherFiles,
+  };
+  if (downloadedFiles['next.config.js']) {
+    nextFiles['next.config.js'] = downloadedFiles['next.config.js'];
   }
-  const pages = await glob('**/*.js', path.join(workPath, '.next', 'server', 'static', buildId, 'pages'))
+  const pages = await glob(
+    '**/*.js',
+    path.join(workPath, '.next', 'server', 'static', buildId, 'pages'),
+  );
+  const launcherPath = path.join(__dirname, 'launcher.js');
+  const launcherData = await readFile(launcherPath, 'utf8');
 
-  const lambdas = {}
-  for(const page in pages) {
-    // These default pages don't have to be handled a rendering, they'd always 404
-    if(['_app.js', '_error.js', '_document.js'].includes(page)) {
-      continue
-    }
+  const lambdas = {};
+  await Promise.all(
+    Object.keys(pages).map(async (page) => {
+      // These default pages don't have to be handled as they'd always 404
+      if (['_app.js', '_error.js', '_document.js'].includes(page)) {
+        return;
+      }
 
-    const pageFiles = {
-      [`.next/server/static/${buildId}/pages/_document.js`]: files[`.next/server/static/${buildId}/pages/_document.js`],
-      [`.next/server/static/${buildId}/pages/_app.js`]: files[`.next/server/static/${buildId}/pages/_app.js`],
-      [`.next/server/static/${buildId}/pages/_error.js`]: files[`.next/server/static/${buildId}/pages/_error.js`],
-      [`.next/server/static/${buildId}/pages/${page}`]: files[`.next/server/static/${buildId}/pages/${page}`]
-    }
+      const pathname = page.replace(/\.js$/, '');
+      const launcher = launcherData.replace(
+        'PATHNAME_PLACEHOLDER',
+        `/${pathname.replace(/(^|\/)index$/, '')}`,
+      );
 
-    lambdas[path.join(entryDirectory, page.replace(/\.js$/, ''))] = await createLambda({
-      files: {...nextFiles, ...pageFiles},
-      handler: 'now__launcher.launcher',
-      runtime: 'nodejs8.10'
-    })
-  }
+      const pageFiles = {
+        [`.next/server/static/${buildId}/pages/_document.js`]: downloadedFiles[
+          `.next/server/static/${buildId}/pages/_document.js`
+        ],
+        [`.next/server/static/${buildId}/pages/_app.js`]: downloadedFiles[
+          `.next/server/static/${buildId}/pages/_app.js`
+        ],
+        [`.next/server/static/${buildId}/pages/_error.js`]: downloadedFiles[
+          `.next/server/static/${buildId}/pages/_error.js`
+        ],
+        [`.next/server/static/${buildId}/pages/${page}`]: downloadedFiles[
+          `.next/server/static/${buildId}/pages/${page}`
+        ],
+      };
 
-  const nextStaticFiles = await glob('**', path.join(workPath, '.next', 'static'))
-  const staticFiles = {}
-  for(const staticFile in nextStaticFiles) {
-    staticFiles[path.join(entryDirectory, '_next/static/' + staticFile)] = nextStaticFiles[staticFile]
-  }
+      console.log(`Creating lambda for page: "${page}"...`);
+      lambdas[path.join(entryDirectory, pathname)] = await createLambda({
+        files: {
+          ...nextFiles,
+          ...pageFiles,
+          'now__launcher.js': new FileBlob({ data: launcher }),
+        },
+        handler: 'now__launcher.launcher',
+        runtime: 'nodejs8.10',
+      });
+      console.log(`Created lambda for page: "${page}"`);
+    }),
+  );
+
+  const nextStaticFiles = await glob(
+    '**',
+    path.join(workPath, '.next', 'static'),
+  );
+  const staticFiles = Object.keys(nextStaticFiles).reduce(
+    (mappedFiles, file) => ({
+      ...mappedFiles,
+      [path.join(entryDirectory, `_next/static/${file}`)]: nextStaticFiles[file],
+    }),
+    {},
+  );
 
   return { ...lambdas, ...staticFiles };
 };
@@ -163,20 +208,22 @@ exports.build = async ({ files, workPath, entrypoint }) => {
 exports.prepareCache = async ({ files, cachePath, workPath }) => {
   console.log('downloading user files...');
   await download(files, cachePath);
-  await download(await glob('.next/**', workPath), cachePath)
-  await download(await glob('node_modules/**', workPath), cachePath)
+  await download(await glob('.next/**', workPath), cachePath);
+  await download(await glob('node_modules/**', workPath), cachePath);
 
-  console.log('.next folder contents', await glob('.next/**', cachePath))
-  console.log('.cache folder contents', await glob('node_modules/.cache/**', cachePath))
+  console.log('.next folder contents', await glob('.next/**', cachePath));
+  console.log(
+    '.cache folder contents',
+    await glob('node_modules/.cache/**', cachePath),
+  );
 
   console.log('running npm install...');
   await runNpmInstall(cachePath);
 
-
   return {
-    ...await glob('.next/records.json', cachePath),
-    ...await glob('.next/server/records.json', cachePath),
-    ...await glob('node_modules/**', cachePath),
-    ...await glob('yarn.lock', cachePath)
+    ...(await glob('.next/records.json', cachePath)),
+    ...(await glob('.next/server/records.json', cachePath)),
+    ...(await glob('node_modules/**', cachePath)),
+    ...(await glob('yarn.lock', cachePath)),
   };
 };

packages/now-next/launcher.js

@@ -1,15 +1,19 @@
-const { Bridge } = require('./now__bridge.js');
 const { Server } = require('http');
-const next = require('next-server')
+const next = require('next-server');
+const url = require('url');
+const { Bridge } = require('./now__bridge.js');
+
 const bridge = new Bridge();
 bridge.port = 3000;
 
 process.env.NODE_ENV = 'production';
 
-const app = next({})
-const handler = app.getRequestHandler()
+const app = next({});
 
-const server = new Server(handler);
+const server = new Server((req, res) => {
+  const parsedUrl = url.parse(req.url, true);
+  app.render(req, res, 'PATHNAME_PLACEHOLDER', parsedUrl.query, parsedUrl);
+});
 server.listen(bridge.port);
 
 exports.launcher = bridge.launcher;

packages/now-next/package.json

@@ -1,9 +1,12 @@
 {
   "name": "@now/next",
-  "version": "0.0.74-canary.3",
+  "version": "0.0.78",
   "dependencies": {
     "@now/node-bridge": "0.1.4",
     "execa": "^1.0.0",
     "fs.promised": "^3.0.0"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-next/utils.js

@@ -0,0 +1,151 @@
+const rename = require('@now/build-utils/fs/rename.js');
+
+/** @typedef { import('@now/build-utils/file-ref') } FileRef */
+/** @typedef { import('@now/build-utils/file-fs-ref') } FileFsRef */
+/** @typedef {{[filePath: string]: FileRef|FileFsRef}} Files */
+
+/**
+ * Validate if the entrypoint is allowed to be used
+ * @param {string} entrypoint
+ * @throws {Error}
+ */
+function validateEntrypoint(entrypoint) {
+  if (
+    !/package\.json$/.exec(entrypoint)
+    && !/next\.config\.js$/.exec(entrypoint)
+  ) {
+    throw new Error(
+      'Specified "src" for "@now/next" has to be "package.json" or "next.config.js"',
+    );
+  }
+}
+
+/**
+ * This callback type is called `requestCallback` and is displayed as a global symbol.
+ *
+ * @callback matcher
+ * @param {string} filePath
+ * @returns {boolean}
+ */
+
+/**
+ * Exclude certain files from the files object
+ * @param {Files} files
+ * @param {matcher} matcher
+ * @returns {Files}
+ */
+function excludeFiles(files, matcher) {
+  return Object.keys(files).reduce((newFiles, filePath) => {
+    if (matcher(filePath)) {
+      return newFiles;
+    }
+    return {
+      ...newFiles,
+      [filePath]: files[filePath],
+    };
+  }, {});
+}
+
+/**
+ * Creates a new Files object holding only the entrypoint files
+ * @param {Files} files
+ * @param {string} entryDirectory
+ * @returns {Files}
+ */
+function includeOnlyEntryDirectory(files, entryDirectory) {
+  if (entryDirectory === '.') {
+    return files;
+  }
+
+  function matcher(filePath) {
+    return !filePath.startsWith(entryDirectory);
+  }
+
+  return excludeFiles(files, matcher);
+}
+
+/**
+ * Moves all files under the entry directory to the root directory
+ * @param {Files} files
+ * @param {string} entryDirectory
+ * @returns {Files}
+ */
+function moveEntryDirectoryToRoot(files, entryDirectory) {
+  if (entryDirectory === '.') {
+    return files;
+  }
+
+  function delegate(filePath) {
+    return filePath.replace(new RegExp(`^${entryDirectory}/`), '');
+  }
+
+  return rename(files, delegate);
+}
+
+/**
+ * Exclude package manager lockfiles from files
+ * @param {Files} files
+ * @returns {Files}
+ */
+function excludeLockFiles(files) {
+  const newFiles = files;
+  if (newFiles['package-lock.json']) {
+    delete newFiles['package-lock.json'];
+  }
+  if (newFiles['yarn.lock']) {
+    delete newFiles['yarn.lock'];
+  }
+  return files;
+}
+
+/**
+ * Exclude the static directory from files
+ * @param {Files} files
+ * @returns {Files}
+ */
+function excludeStaticDirectory(files) {
+  function matcher(filePath) {
+    return filePath.startsWith('static');
+  }
+
+  return excludeFiles(files, matcher);
+}
+
+/**
+ * Enforce specific package.json configuration for smallest possible lambda
+ * @param {Object} defaultPackageJson
+ */
+function normalizePackageJson(defaultPackageJson = {}) {
+  return {
+    ...defaultPackageJson,
+    dependencies: {
+      // react and react-dom can be overwritten
+      react: 'latest',
+      'react-dom': 'latest',
+      ...defaultPackageJson.dependencies,
+      // next-server is forced to canary
+      'next-server': 'canary',
+      next: undefined,
+    },
+    devDependencies: {
+      ...defaultPackageJson.devDependencies,
+      // next is forced to canary
+      next: 'canary',
+      'next-server': undefined,
+    },
+    scripts: {
+      ...defaultPackageJson.scripts,
+      'now-build': 'next build',
+    },
+  };
+}
+
+module.exports = {
+  excludeFiles,
+  validateEntrypoint,
+  includeOnlyEntryDirectory,
+  moveEntryDirectoryToRoot,
+  excludeLockFiles,
+  normalizePackageJson,
+  excludeStaticDirectory,
+};

packages/now-node-bridge/bridge.js

@@ -1,12 +1,52 @@
-const assert = require('assert');
 const http = require('http');
 
+function normalizeEvent(event) {
+  if (event.Action === 'Invoke') {
+    const invokeEvent = JSON.parse(event.body);
+
+    const {
+      method, path, headers, encoding,
+    } = invokeEvent;
+
+    let { body } = invokeEvent;
+
+    if (body) {
+      if (encoding === 'base64') {
+        body = Buffer.from(body, encoding);
+      } else if (encoding === undefined) {
+        body = Buffer.from(body);
+      } else {
+        throw new Error(`Unsupported encoding: ${encoding}`);
+      }
+    }
+
+    return {
+      method,
+      path,
+      headers,
+      body,
+    };
+  }
+
+  const {
+    httpMethod: method, path, headers, body,
+  } = event;
+
+  return {
+    method,
+    path,
+    headers,
+    body,
+  };
+}
+
 class Bridge {
-  constructor () {
+  constructor() {
     this.launcher = this.launcher.bind(this);
   }
 
-  launcher (event) {
+  launcher(event) {
+    // eslint-disable-next-line consistent-return
     return new Promise((resolve, reject) => {
       if (this.userError) {
         console.error('Error while initializing entrypoint:', this.userError);
@@ -17,45 +57,32 @@ class Bridge {
         return resolve({ statusCode: 504, body: '' });
       }
 
-      let method, path, headers, body;
-
-      if (event.Action === 'Invoke') {
-        event = JSON.parse(event.body);
-        method = event.method;
-        path = event.path;
-        headers = event.headers;
-        if (event.body) {
-          assert(event.encoding === 'base64', JSON.stringify(event)); // do we support anything else?
-          body = Buffer.from(event.body, event.encoding);
-        }
-      } else {
-        method = event.httpMethod;
-        path = event.path;
-        headers = event.headers;
-        body = event.body;
-      }
+      const {
+        method, path, headers, body,
+      } = normalizeEvent(event);
 
       const opts = {
         hostname: '127.0.0.1',
         port: this.port,
         path,
         method,
-        headers
+        headers,
       };
 
-      const req = http.request(opts, (resp) => {
+      const req = http.request(opts, (res) => {
+        const response = res;
         const respBodyChunks = [];
-        resp.on('data', (chunk) => respBodyChunks.push(Buffer.from(chunk)));
-        resp.on('error', (error) => reject(error));
-        resp.on('end', () => {
-          delete resp.headers.connection;
-          delete resp.headers['content-length'];
+        response.on('data', chunk => respBodyChunks.push(Buffer.from(chunk)));
+        response.on('error', error => reject(error));
+        response.on('end', () => {
+          delete response.headers.connection;
+          delete response.headers['content-length'];
 
           resolve({
-            statusCode: resp.statusCode,
-            headers: resp.headers,
+            statusCode: response.statusCode,
+            headers: response.headers,
             body: Buffer.concat(respBodyChunks).toString('base64'),
-            encoding: 'base64'
+            encoding: 'base64',
           });
         });
       });
@@ -67,5 +94,5 @@ class Bridge {
 }
 
 module.exports = {
-  Bridge
+  Bridge,
 };

packages/now-node-bridge/index.js

@@ -1,2 +1,3 @@
 const path = require('path');
+
 module.exports = path.join(__dirname, 'bridge.js');

packages/now-node-bridge/package.json

@@ -1,4 +1,7 @@
 {
   "name": "@now/node-bridge",
-  "version": "0.1.6-canary.3"
+  "version": "0.1.8",
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
 }

packages/now-node-server/index.js

@@ -2,23 +2,27 @@ const { createLambda } = require('@now/build-utils/lambda.js');
 const download = require('@now/build-utils/fs/download.js');
 const FileBlob = require('@now/build-utils/file-blob.js');
 const FileFsRef = require('@now/build-utils/file-fs-ref.js');
-const fs = require('fs');
+const fs = require('fs-extra');
 const glob = require('@now/build-utils/fs/glob.js');
 const path = require('path');
 const { promisify } = require('util');
-const { runNpmInstall, runPackageJsonScript
-  } = require('@now/build-utils/fs/run-user-scripts.js');
+const {
+  runNpmInstall,
+  runPackageJsonScript,
+} = require('@now/build-utils/fs/run-user-scripts.js');
 
 const fsp = {
-  readFile: promisify(fs.readFile)
+  readFile: promisify(fs.readFile),
 };
 
-async function commonForTwo ({ files, entrypoint, workPath, cachePath }) {
+async function commonForTwo({
+  files, entrypoint, workPath, cachePath,
+}) {
   const xPath = workPath || cachePath;
-  const preferOfflineArgument = workPath ? [ '--prefer-offline' ] : [];
+  const preferOfflineArgument = workPath ? ['--prefer-offline'] : [];
 
   const xUserPath = path.join(xPath, 'user');
-  const xRollupPath = path.join(xPath, 'rollup');
+  const xNccPath = path.join(xPath, 'ncc');
 
   console.log('downloading user files...');
   const filesOnDisk = await download(files, xUserPath);
@@ -27,36 +31,46 @@ async function commonForTwo ({ files, entrypoint, workPath, cachePath }) {
   const entrypointFsDirname = path.join(xUserPath, path.dirname(entrypoint));
   await runNpmInstall(entrypointFsDirname, preferOfflineArgument);
 
-  console.log('writing rollup package.json...');
-  await download({
-    'package.json': new FileBlob({
-      data: JSON.stringify({
-        dependencies: {
-          'builtins': '2.0.0',
-          'rollup': '0.67.0',
-          'rollup-plugin-commonjs': '9.2.0',
-          'rollup-plugin-json': '3.1.0',
-          'rollup-plugin-node-resolve': '3.4.0',
-          'rollup-plugin-terser': '3.0.0'
-        }
-      })
-    })
-  }, xRollupPath);
+  console.log('writing ncc package.json...');
+  await download(
+    {
+      'package.json': new FileBlob({
+        data: JSON.stringify({
+          dependencies: {
+            '@zeit/ncc': '0.1.4-webpack',
+          },
+        }),
+      }),
+    },
+    xNccPath,
+  );
 
-  console.log('running npm install for rollup...');
-  await runNpmInstall(xRollupPath, preferOfflineArgument);
-  return [ filesOnDisk, xRollupPath, entrypointFsDirname ];
+  console.log('running npm install for ncc...');
+  await runNpmInstall(xNccPath, preferOfflineArgument);
+  return [filesOnDisk, xNccPath, entrypointFsDirname];
 }
 
+async function compile(workNccPath, input) {
+  const ncc = require(path.join(workNccPath, 'node_modules/@zeit/ncc'));
+  return ncc(input);
+}
+
+exports.config = {
+  maxLambdaSize: '15mb',
+};
+
 exports.build = async ({ files, entrypoint, workPath }) => {
-  const [ filesOnDisk, workRollupPath, entrypointFsDirname ] =
-    await commonForTwo({ files, entrypoint, workPath });
+  const [filesOnDisk, workNccPath, entrypointFsDirname] = await commonForTwo({
+    files,
+    entrypoint,
+    workPath,
+  });
 
   console.log('running user script...');
   await runPackageJsonScript(entrypointFsDirname, 'now-build');
 
-  console.log('compiling entrypoint with rollup...');
-  const data = await compile(workRollupPath, filesOnDisk[entrypoint].fsPath);
+  console.log('compiling entrypoint with ncc...');
+  const data = await compile(workNccPath, filesOnDisk[entrypoint].fsPath);
   const blob = new FileBlob({ data });
 
   console.log('preparing lambda files...');
@@ -65,70 +79,40 @@ exports.build = async ({ files, entrypoint, workPath }) => {
   const launcherPath = path.join(__dirname, 'launcher.js');
   let launcherData = await fsp.readFile(launcherPath, 'utf8');
 
-  launcherData = launcherData.replace('// PLACEHOLDER', [
-    'process.chdir("./user");',
-    `require("./${path.join('user', entrypoint)}");`
-  ].join(' '));
+  launcherData = launcherData.replace(
+    '// PLACEHOLDER',
+    [
+      'process.chdir("./user");',
+      `require("./${path.join('user', entrypoint)}");`,
+    ].join(' '),
+  );
 
   const launcherFiles = {
     'launcher.js': new FileBlob({ data: launcherData }),
-    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') })
+    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') }),
   };
 
   const lambda = await createLambda({
     files: { ...compiledFiles, ...launcherFiles },
     handler: 'launcher.launcher',
-    runtime: 'nodejs8.10'
+    runtime: 'nodejs8.10',
   });
 
   return { [entrypoint]: lambda };
 };
 
-exports.prepareCache = async ({ files, entrypoint, cachePath }) => {
+exports.prepareCache = async ({
+  files, entrypoint, workPath, cachePath,
+}) => {
+  await fs.remove(workPath);
   await commonForTwo({ files, entrypoint, cachePath });
 
   return {
-    ...await glob('user/node_modules/**', cachePath),
-    ...await glob('user/package-lock.json', cachePath),
-    ...await glob('user/yarn.lock', cachePath),
-    ...await glob('rollup/node_modules/**', cachePath),
-    ...await glob('rollup/package-lock.json', cachePath),
-    ...await glob('rollup/yarn.lock', cachePath)
+    ...(await glob('user/node_modules/**', cachePath)),
+    ...(await glob('user/package-lock.json', cachePath)),
+    ...(await glob('user/yarn.lock', cachePath)),
+    ...(await glob('ncc/node_modules/**', cachePath)),
+    ...(await glob('ncc/package-lock.json', cachePath)),
+    ...(await glob('ncc/yarn.lock', cachePath)),
   };
 };
-
-async function compile (workRollupPath, input) {
-  const rollup = require(path.join(workRollupPath, 'node_modules/rollup'));
-  const nodeResolve = require(path.join(workRollupPath, 'node_modules/rollup-plugin-node-resolve'));
-  const commonjs = require(path.join(workRollupPath, 'node_modules/rollup-plugin-commonjs'));
-  const json = require(path.join(workRollupPath, 'node_modules/rollup-plugin-json'));
-  const { terser } = require(path.join(workRollupPath, 'node_modules/rollup-plugin-terser'));
-  const builtins = require(path.join(workRollupPath, 'node_modules/builtins'))();
-
-  const bundle = await rollup.rollup({
-    input,
-    plugins: [
-      nodeResolve({
-        module: false,
-        jsnext: false,
-        browser: false,
-        preferBuiltins: true
-      }),
-      json(),
-      commonjs(),
-      terser()
-    ],
-    onwarn: function (error) {
-      if (/external dependency/.test(error.message)) {
-        const mod = error.message.split('\'')[1];
-        // ignore rollup warnings about known node.js modules
-        if (builtins.indexOf(mod) > -1) return;
-      }
-      console.error(error.message);
-    }
-  });
-
-  return (await bundle.generate({
-    format: 'cjs'
-  })).code;
-}

packages/now-node-server/launcher.js

@@ -1,10 +1,11 @@
-const { Bridge } = require('./bridge.js');
 const { Server } = require('http');
+const { Bridge } = require('./bridge.js');
+
 const bridge = new Bridge();
 
 const saveListen = Server.prototype.listen;
-Server.prototype.listen = function (...args) {
-  this.on('listening', function () {
+Server.prototype.listen = function listen(...args) {
+  this.on('listening', function listening() {
     bridge.port = this.address().port;
   });
   saveListen.apply(this, args);

packages/now-node-server/package.json

@@ -1,7 +1,11 @@
 {
   "name": "@now/node-server",
-  "version": "0.4.21-canary.3",
+  "version": "0.4.23",
   "dependencies": {
-    "@now/node-bridge": "^0.1.6-canary.3"
+    "@now/node-bridge": "^0.1.8",
+    "fs-extra": "7.0.1"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-node/index.js

@@ -2,133 +2,136 @@ const { createLambda } = require('@now/build-utils/lambda.js');
 const download = require('@now/build-utils/fs/download.js');
 const FileBlob = require('@now/build-utils/file-blob.js');
 const FileFsRef = require('@now/build-utils/file-fs-ref.js');
+const fsExtra = require('fs-extra');
 const fs = require('fs');
 const glob = require('@now/build-utils/fs/glob.js');
 const path = require('path');
 const { promisify } = require('util');
-const { runNpmInstall, runPackageJsonScript
-  } = require('@now/build-utils/fs/run-user-scripts.js');
+const {
+  runNpmInstall,
+  runPackageJsonScript,
+} = require('@now/build-utils/fs/run-user-scripts.js');
 
-const fsp = {
-  readFile: promisify(fs.readFile)
-};
+const readFile = promisify(fs.readFile);
 
-async function commonForTwo ({ files, entrypoint, workPath, cachePath }) {
-  const xPath = workPath || cachePath;
-  const preferOfflineArgument = workPath ? [ '--prefer-offline' ] : [];
+/** @typedef { import('@now/build-utils/file-ref') } FileRef */
+/** @typedef {{[filePath: string]: FileRef}} Files */
 
-  const xUserPath = path.join(xPath, 'user');
-  const xRollupPath = path.join(xPath, 'rollup');
+/**
+ * @typedef {Object} BuildParamsType
+ * @property {Files} files - Files object
+ * @property {string} entrypoint - Entrypoint specified for the builder
+ * @property {string} workPath - Working directory for this build
+ */
+
+/**
+ * @param {BuildParamsType} buildParams
+ * @param {Object} [options]
+ * @param {string[]} [options.npmArguments]
+ */
+async function downloadInstallAndBundle(
+  { files, entrypoint, workPath },
+  { npmArguments = [] } = {},
+) {
+  const userPath = path.join(workPath, 'user');
+  const nccPath = path.join(workPath, 'ncc');
 
   console.log('downloading user files...');
-  const filesOnDisk = await download(files, xUserPath);
+  const filesOnDisk = await download(files, userPath);
 
   console.log('running npm install for user...');
-  const entrypointFsDirname = path.join(xUserPath, path.dirname(entrypoint));
-  await runNpmInstall(entrypointFsDirname, preferOfflineArgument);
+  const entrypointFsDirname = path.join(userPath, path.dirname(entrypoint));
+  await runNpmInstall(entrypointFsDirname, npmArguments);
 
-  console.log('writing rollup package.json...');
-  await download({
-    'package.json': new FileBlob({
-      data: JSON.stringify({
-        dependencies: {
-          'builtins': '2.0.0',
-          'rollup': '0.67.0',
-          'rollup-plugin-commonjs': '9.2.0',
-          'rollup-plugin-json': '3.1.0',
-          'rollup-plugin-node-resolve': '3.4.0',
-          'rollup-plugin-terser': '3.0.0'
-        }
-      })
-    })
-  }, xRollupPath);
+  console.log('writing ncc package.json...');
+  await download(
+    {
+      'package.json': new FileBlob({
+        data: JSON.stringify({
+          dependencies: {
+            '@zeit/ncc': '0.1.4-webpack',
+          },
+        }),
+      }),
+    },
+    nccPath,
+  );
 
-  console.log('running npm install for rollup...');
-  await runNpmInstall(xRollupPath, preferOfflineArgument);
-  return [ filesOnDisk, xRollupPath, entrypointFsDirname ];
+  console.log('running npm install for ncc...');
+  await runNpmInstall(nccPath, npmArguments);
+  return [filesOnDisk, nccPath, entrypointFsDirname];
 }
 
+async function compile(workNccPath, input) {
+  const ncc = require(path.join(workNccPath, 'node_modules/@zeit/ncc'));
+  return ncc(input);
+}
+
+exports.config = {
+  maxLambdaSize: '5mb',
+};
+
+/**
+ * @param {BuildParamsType} buildParams
+ * @returns {Promise<Files>}
+ */
 exports.build = async ({ files, entrypoint, workPath }) => {
-  const [ filesOnDisk, workRollupPath, entrypointFsDirname ] =
-    await commonForTwo({ files, entrypoint, workPath });
+  const [
+    filesOnDisk,
+    workNccPath,
+    entrypointFsDirname,
+  ] = await downloadInstallAndBundle(
+    { files, entrypoint, workPath },
+    { npmArguments: ['--prefer-offline'] },
+  );
 
   console.log('running user script...');
   await runPackageJsonScript(entrypointFsDirname, 'now-build');
 
-  console.log('compiling entrypoint with rollup...');
-  const data = await compile(workRollupPath, filesOnDisk[entrypoint].fsPath);
+  console.log('compiling entrypoint with ncc...');
+  const data = await compile(workNccPath, filesOnDisk[entrypoint].fsPath);
   const blob = new FileBlob({ data });
 
   console.log('preparing lambda files...');
   // move all user code to 'user' subdirectory
   const compiledFiles = { [path.join('user', entrypoint)]: blob };
   const launcherPath = path.join(__dirname, 'launcher.js');
-  let launcherData = await fsp.readFile(launcherPath, 'utf8');
+  let launcherData = await readFile(launcherPath, 'utf8');
 
-  launcherData = launcherData.replace('// PLACEHOLDER', [
-    'process.chdir("./user");',
-    `listener = require("./${path.join('user', entrypoint)}");`
-  ].join(' '));
+  launcherData = launcherData.replace(
+    '// PLACEHOLDER',
+    [
+      'process.chdir("./user");',
+      `listener = require("./${path.join('user', entrypoint)}");`,
+    ].join(' '),
+  );
 
   const launcherFiles = {
     'launcher.js': new FileBlob({ data: launcherData }),
-    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') })
+    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') }),
   };
 
   const lambda = await createLambda({
     files: { ...compiledFiles, ...launcherFiles },
     handler: 'launcher.launcher',
-    runtime: 'nodejs8.10'
+    runtime: 'nodejs8.10',
   });
 
   return { [entrypoint]: lambda };
 };
 
-exports.prepareCache = async ({ files, entrypoint, cachePath }) => {
-  await commonForTwo({ files, entrypoint, cachePath });
+exports.prepareCache = async ({
+  files, entrypoint, workPath, cachePath,
+}) => {
+  await fsExtra.remove(workPath);
+  await downloadInstallAndBundle({ files, entrypoint, workPath: cachePath });
 
   return {
-    ...await glob('user/node_modules/**', cachePath),
-    ...await glob('user/package-lock.json', cachePath),
-    ...await glob('user/yarn.lock', cachePath),
-    ...await glob('rollup/node_modules/**', cachePath),
-    ...await glob('rollup/package-lock.json', cachePath),
-    ...await glob('rollup/yarn.lock', cachePath)
+    ...(await glob('user/node_modules/**', cachePath)),
+    ...(await glob('user/package-lock.json', cachePath)),
+    ...(await glob('user/yarn.lock', cachePath)),
+    ...(await glob('ncc/node_modules/**', cachePath)),
+    ...(await glob('ncc/package-lock.json', cachePath)),
+    ...(await glob('ncc/yarn.lock', cachePath)),
   };
 };
-
-async function compile (workRollupPath, input) {
-  const rollup = require(path.join(workRollupPath, 'node_modules/rollup'));
-  const nodeResolve = require(path.join(workRollupPath, 'node_modules/rollup-plugin-node-resolve'));
-  const commonjs = require(path.join(workRollupPath, 'node_modules/rollup-plugin-commonjs'));
-  const json = require(path.join(workRollupPath, 'node_modules/rollup-plugin-json'));
-  const { terser } = require(path.join(workRollupPath, 'node_modules/rollup-plugin-terser'));
-  const builtins = require(path.join(workRollupPath, 'node_modules/builtins'))();
-
-  const bundle = await rollup.rollup({
-    input,
-    plugins: [
-      nodeResolve({
-        module: false,
-        jsnext: false,
-        browser: false,
-        preferBuiltins: true
-      }),
-      json(),
-      commonjs(),
-      terser()
-    ],
-    onwarn: function (error) {
-      if (/external dependency/.test(error.message)) {
-        const mod = error.message.split('\'')[1];
-        // ignore rollup warnings about known node.js modules
-        if (builtins.indexOf(mod) > -1) return;
-      }
-      console.error(error.message);
-    }
-  });
-
-  return (await bundle.generate({
-    format: 'cjs'
-  })).code;
-}

packages/now-node/launcher.js

@@ -1,5 +1,6 @@
-const { Bridge } = require('./bridge.js');
 const { Server } = require('http');
+const { Bridge } = require('./bridge.js');
+
 const bridge = new Bridge();
 bridge.port = 3000;
 let listener;

packages/now-node/package.json

@@ -1,7 +1,11 @@
 {
   "name": "@now/node",
-  "version": "0.4.23-canary.3",
+  "version": "0.4.25",
   "dependencies": {
-    "@now/node-bridge": "^0.1.6-canary.3"
+    "@now/node-bridge": "^0.1.8",
+    "fs-extra": "7.0.1"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-optipng/index.js

@@ -2,13 +2,14 @@ const FileBlob = require('@now/build-utils/file-blob.js');
 const OptiPng = require('optipng');
 const pipe = require('multipipe');
 
-exports.analyze = ({ files, entrypoint }) => {
-  return files[entrypoint].digest;
-};
+exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
 
 exports.build = async ({ files, entrypoint }) => {
-  const optimizer = new OptiPng([ '-o9' ]);
-  const stream = pipe(files[entrypoint].toStream(), optimizer);
+  const optimizer = new OptiPng(['-o9']);
+  const stream = pipe(
+    files[entrypoint].toStream(),
+    optimizer,
+  );
   const result = await FileBlob.fromStream({ stream });
   return { [entrypoint]: result };
 };

packages/now-optipng/package.json

@@ -1,8 +1,11 @@
 {
   "name": "@now/optipng",
-  "version": "0.4.4-canary.3",
+  "version": "0.4.6",
   "dependencies": {
     "multipipe": "2.0.3",
     "optipng": "1.1.0"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-php/index.js

@@ -3,9 +3,13 @@ const glob = require('@now/build-utils/fs/glob.js');
 const path = require('path');
 const rename = require('@now/build-utils/fs/rename.js');
 
+exports.config = {
+  maxLambdaSize: '10mb',
+};
+
 exports.build = async ({ files, entrypoint }) => {
   // move all user code to 'user' subdirectory
-  const userFiles = rename(files, (name) => path.join('user', name));
+  const userFiles = rename(files, name => path.join('user', name));
   const launcherFiles = await glob('**', path.join(__dirname, 'dist'));
   const zipFiles = { ...userFiles, ...launcherFiles };
 
@@ -15,8 +19,8 @@ exports.build = async ({ files, entrypoint }) => {
     runtime: 'go1.x',
     environment: {
       SCRIPT_NAME: path.join('/', entrypoint),
-      NOW_PHP_SCRIPT: path.join('user', entrypoint)
-    }
+      NOW_PHP_SCRIPT: path.join('user', entrypoint),
+    },
   });
 
   return { [entrypoint]: lambda };

packages/now-php/package.json

@@ -1,4 +1,7 @@
 {
   "name": "@now/php",
-  "version": "0.4.8-canary.3"
+  "version": "0.4.10",
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
 }

packages/now-python/download-and-install-pip.js

@@ -1,33 +1,34 @@
-const path = require('path')
-const fetch = require('node-fetch')
-const execa = require('execa')
-const { createWriteStream } = require('fs')
+const path = require('path');
+const fetch = require('node-fetch');
+const execa = require('execa');
+const { createWriteStream } = require('fs');
 
 const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js');
-const url = 'https://bootstrap.pypa.io/get-pip.py'
+
+const url = 'https://bootstrap.pypa.io/get-pip.py';
 
 // downloads `get-pip.py` and returns its absolute path
 async function downloadGetPipScript() {
-  console.log('downloading "get-pip.py"...')
-  const res = await fetch(url)
+  console.log('downloading "get-pip.py"...');
+  const res = await fetch(url);
 
   if (!res.ok || res.status !== 200) {
-    throw new Error(`Could not download "get-pip.py" from "${url}"`)
-  } 
-  
-  const dir = await getWritableDirectory()
-  const filePath = path.join(dir, 'get-pip.py')
-  const writeStream = createWriteStream(filePath)
-  
+    throw new Error(`Could not download "get-pip.py" from "${url}"`);
+  }
+
+  const dir = await getWritableDirectory();
+  const filePath = path.join(dir, 'get-pip.py');
+  const writeStream = createWriteStream(filePath);
+
   return new Promise((resolve, reject) => {
     res.body
       .on('error', reject)
       .pipe(writeStream)
-      .on('finish', () => resolve(filePath))
-  })
+      .on('finish', () => resolve(filePath));
+  });
 }
 
-// downloads and installs `pip` (respecting 
+// downloads and installs `pip` (respecting
 // process.env.PYTHONUSERBASE), and returns
 // the absolute path to it
 async function downloadAndInstallPip() {
@@ -36,19 +37,21 @@ async function downloadAndInstallPip() {
     // installed to. `--user` will assume `~` if this
     // is not set, and `~` is not writeable on AWS Lambda.
     // let's refuse to proceed
-    throw new Error('Could not install "pip": "PYTHONUSERBASE" env var is not set')
+    throw new Error(
+      'Could not install "pip": "PYTHONUSERBASE" env var is not set',
+    );
   }
-  const getPipFilePath = await downloadGetPipScript()
+  const getPipFilePath = await downloadGetPipScript();
 
-  console.log('runing "python get-pip.py"...')
+  console.log('runing "python get-pip.py"...');
   try {
-    await execa('python3', [getPipFilePath, '--user'], {stdio: 'inherit'})
+    await execa('python3', [getPipFilePath, '--user'], { stdio: 'inherit' });
   } catch (err) {
-    console.log('could not install pip')
-    throw err
+    console.log('could not install pip');
+    throw err;
   }
 
-  return path.join(process.env.PYTHONUSERBASE, 'bin', 'pip')
+  return path.join(process.env.PYTHONUSERBASE, 'bin', 'pip');
 }
 
-module.exports = downloadAndInstallPip
+module.exports = downloadAndInstallPip;

packages/now-python/index.js

@@ -1,77 +1,84 @@
-const path = require('path')
-const execa = require('execa')
-const { readFile, writeFile } = require('fs.promised')
+const path = require('path');
+const execa = require('execa');
+const { readFile, writeFile } = require('fs.promised');
 const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js');
-const download = require('@now/build-utils/fs/download.js')
-const downloadAndInstallPip = require('./download-and-install-pip')
+const download = require('@now/build-utils/fs/download.js');
 const glob = require('@now/build-utils/fs/glob.js');
 const { createLambda } = require('@now/build-utils/lambda.js');
+const downloadAndInstallPip = require('./download-and-install-pip');
 
 async function pipInstall(pipPath, srcDir, ...args) {
-  console.log(`running "pip install -t ${srcDir} ${args.join(' ')}"...`)
+  console.log(`running "pip install -t ${srcDir} ${args.join(' ')}"...`);
   try {
-    await execa(
-      pipPath,
-      [
-        'install',
-        '-t', srcDir,
-        ...args
-      ],
-      {stdio: 'inherit'}
-    )
+    await execa(pipPath, ['install', '-t', srcDir, ...args], {
+      stdio: 'inherit',
+    });
   } catch (err) {
-    console.log(`failed to run "pip install -t ${srcDir} ${args.join(' ')}"`)
-    throw err
+    console.log(`failed to run "pip install -t ${srcDir} ${args.join(' ')}"`);
+    throw err;
   }
 }
 
-exports.build = async ({ files, entrypoint, config }) => {
-  console.log('downloading files...')
+exports.config = {
+  maxLambdaSize: '5mb',
+};
 
-  const srcDir = await getWritableDirectory()
+exports.build = async ({ files, entrypoint }) => {
+  console.log('downloading files...');
+
+  const srcDir = await getWritableDirectory();
+
+  // eslint-disable-next-line no-param-reassign
+  files = await download(files, srcDir);
 
-  files = await download(files, srcDir)
-  
   // this is where `pip` will be installed to
   // we need it to be under `/tmp`
-  const pyUserBase = await getWritableDirectory()
-  process.env.PYTHONUSERBASE = pyUserBase
+  const pyUserBase = await getWritableDirectory();
+  process.env.PYTHONUSERBASE = pyUserBase;
 
-  const pipPath = await downloadAndInstallPip()
+  const pipPath = await downloadAndInstallPip();
 
-  await pipInstall(pipPath, srcDir, 'requests')
+  await pipInstall(pipPath, srcDir, 'requests');
 
   if (files['requirements.txt']) {
-    console.log('found "requirements.txt"')
+    console.log('found "requirements.txt"');
 
-    const requirementsTxtPath = files['requirements.txt'].fsPath
-    await pipInstall(pipPath, srcDir, '-r', requirementsTxtPath)
+    const requirementsTxtPath = files['requirements.txt'].fsPath;
+    await pipInstall(pipPath, srcDir, '-r', requirementsTxtPath);
   }
 
-  const originalNowHandlerPyContents = await readFile(path.join(__dirname, 'now_handler.py'), 'utf8')
+  const originalNowHandlerPyContents = await readFile(
+    path.join(__dirname, 'now_handler.py'),
+    'utf8',
+  );
   // will be used on `from $here import handler`
   // for example, `from api.users import handler`
-  console.log('entrypoint is', entrypoint)
-  const userHandlerFilePath = entrypoint.replace(/\//g, '.').replace(/\.py$/, '')
+  console.log('entrypoint is', entrypoint);
+  const userHandlerFilePath = entrypoint
+    .replace(/\//g, '.')
+    .replace(/\.py$/, '');
   const nowHandlerPyContents = originalNowHandlerPyContents.replace(
     '__NOW_HANDLER_FILENAME',
-    userHandlerFilePath
-  )
+    userHandlerFilePath,
+  );
 
   // in order to allow the user to have `server.py`, we need our `server.py` to be called
   // somethig else
-  const nowHandlerPyFilename = 'now__handler__python'
+  const nowHandlerPyFilename = 'now__handler__python';
 
-  await writeFile(path.join(srcDir, nowHandlerPyFilename + '.py'), nowHandlerPyContents)
+  await writeFile(
+    path.join(srcDir, `${nowHandlerPyFilename}.py`),
+    nowHandlerPyContents,
+  );
 
   const lambda = await createLambda({
     files: await glob('**', srcDir),
-    handler: nowHandlerPyFilename + '.now_handler',
+    handler: `${nowHandlerPyFilename}.now_handler`,
     runtime: 'python3.6',
-    environment: {}
-  })
+    environment: {},
+  });
 
   return {
-    [entrypoint]: lambda
-  }
-}
+    [entrypoint]: lambda,
+  };
+};

packages/now-python/package.json

@@ -1,11 +1,14 @@
 {
   "name": "@now/python",
-  "version": "0.0.37-canary.3",
+  "version": "0.0.39",
   "main": "index.js",
   "license": "MIT",
   "dependencies": {
     "execa": "^1.0.0",
     "fs.promised": "^3.0.0",
     "node-fetch": "^2.2.0"
+  },
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
   }
 }

packages/now-static-build/index.js

@@ -1,29 +1,37 @@
 const download = require('@now/build-utils/fs/download.js');
 const glob = require('@now/build-utils/fs/glob.js');
 const path = require('path');
-const { runNpmInstall, runPackageJsonScript,
-  runShellScript } = require('@now/build-utils/fs/run-user-scripts.js');
+const {
+  runNpmInstall,
+  runPackageJsonScript,
+  runShellScript,
+} = require('@now/build-utils/fs/run-user-scripts.js');
 
-exports.build = async ({ files, entrypoint, workPath }) => {
+exports.build = async ({
+  files, entrypoint, workPath, config,
+}) => {
   console.log('downloading user files...');
   await download(files, workPath);
   console.log('running user scripts...');
   const mountpoint = path.dirname(entrypoint);
   const entrypointFsDirname = path.join(workPath, mountpoint);
-  const distPath = path.join(workPath, path.dirname(entrypoint), 'dist');
+  const distPath = path.join(
+    workPath,
+    path.dirname(entrypoint),
+    (config && config.distDir) || 'dist',
+  );
 
   if (path.basename(entrypoint) === 'package.json') {
-    await runNpmInstall(entrypointFsDirname, [ '--prefer-offline' ]);
+    await runNpmInstall(entrypointFsDirname, ['--prefer-offline']);
     if (await runPackageJsonScript(entrypointFsDirname, 'now-build')) {
-      return await glob('**', distPath, mountpoint);
-    } else {
-      throw new Error(`An error running "now-build" script in "${entrypoint}"`);
+      return glob('**', distPath, mountpoint);
     }
+    throw new Error(`An error running "now-build" script in "${entrypoint}"`);
   }
 
   if (path.extname(entrypoint) === '.sh') {
     await runShellScript(path.join(workPath, entrypoint));
-    return await glob('**', distPath, mountpoint);
+    return glob('**', distPath, mountpoint);
   }
 
   return {};

packages/now-static-build/package.json

@@ -1,4 +1,7 @@
 {
   "name": "@now/static-build",
-  "version": "0.4.12-canary.3"
+  "version": "0.4.14",
+  "peerDependencies": {
+    "@now/build-utils": ">=0.0.1"
+  }
 }

test/integration/now-next/index.test.js

@@ -0,0 +1,23 @@
+/* global it, expect */
+const path = require('path');
+const runBuildLambda = require('../../lib/run-build-lambda');
+
+const TWO_MINUTES = 120000;
+
+it('Should build the standard example', async () => {
+  const { buildResult } = await runBuildLambda(path.join(__dirname, 'standard'));
+  expect(buildResult.index).toBeDefined();
+  const filePaths = Object.keys(buildResult);
+  const hasUnderScoreAppStaticFile = filePaths.some(filePath => filePath.match(/static.*\/pages\/_app\.js$/));
+  const hasUnderScoreErrorStaticFile = filePaths.some(filePath => filePath.match(/static.*\/pages\/_error\.js$/));
+  expect(hasUnderScoreAppStaticFile).toBeTruthy();
+  expect(hasUnderScoreErrorStaticFile).toBeTruthy();
+}, TWO_MINUTES);
+
+it('Should throw when package.json or next.config.js is not the "src"', async () => {
+  try {
+    await runBuildLambda(path.join(__dirname, 'no-package-json-and-next-config'));
+  } catch (err) {
+    expect(err.message).toMatch(/package\.json/);
+  }
+});

test/integration/now-next/no-package-json-and-next-config/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "pages/index.js", "use": "@now/next"}
+  ]
+}

test/integration/now-next/no-package-json-and-next-config/pages/index.js

@@ -0,0 +1 @@
+export default () => 'Index page';

test/integration/now-next/standard/next.config.js

@@ -0,0 +1 @@
+module.exports = {};

test/integration/now-next/standard/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "next.config.js", "use": "@now/next"}
+  ]
+}

test/integration/now-next/standard/pages/index.js

@@ -0,0 +1 @@
+export default () => 'Index page';

test/integration/now-node/airtable/index.js

@@ -0,0 +1,6 @@
+// eslint-disable-next-line no-unused-vars
+const airtable = require('airtable');
+
+module.exports = (req, res) => {
+  res.end('Hello world');
+};

test/integration/now-node/airtable/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "index.js", "use": "@now/node"}
+  ]
+}

test/integration/now-node/airtable/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "airtable",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "airtable": "^0.5.7"
+  }
+}

test/integration/now-node/airtable/yarn.lock

@@ -0,0 +1,416 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+airtable@^0.5.7:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/airtable/-/airtable-0.5.7.tgz#19df9893564166fc2719f8e43118dbc4d7b776f6"
+  integrity sha512-xJiayyBTPgE0grEttU7ABdNzgvLAcmSz1l91aEea2bjqkxrVOViMPOyXilRZdVSUltPssgLMeeE+HOVVbh+Fwg==
+  dependencies:
+    async "1.5.2"
+    lodash "4.17.10"
+    request "2.88.0"
+    xhr "2.3.3"
+
+ajv@^6.5.5:
+  version "6.5.5"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.5.tgz#cf97cdade71c6399a92c6d6c4177381291b781a1"
+  integrity sha512-7q7gtRQDJSyuEHjuVgHoUa2VuemFiCMrfQc9Tc08XTAc4Zj/5U1buQJ0HU6i7fKjXU09SVgSmxa4sLvuvS8Iyg==
+  dependencies:
+    fast-deep-equal "^2.0.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+asn1@~0.2.3:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
+  integrity sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==
+  dependencies:
+    safer-buffer "~2.1.0"
+
+assert-plus@1.0.0, assert-plus@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-1.0.0.tgz#f12e0f3c5d77b0b1cdd9146942e4e96c1e4dd525"
+  integrity sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=
+
+async@1.5.2:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
+  integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
+
+asynckit@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
+  integrity sha1-x57Zf380y48robyXkLzDZkdLS3k=
+
+aws-sign2@~0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
+  integrity sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=
+
+aws4@^1.8.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
+  integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
+
+bcrypt-pbkdf@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
+  integrity sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=
+  dependencies:
+    tweetnacl "^0.14.3"
+
+caseless@~0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
+  integrity sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=
+
+combined-stream@^1.0.6, combined-stream@~1.0.6:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.7.tgz#2d1d24317afb8abe95d6d2c0b07b57813539d828"
+  integrity sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==
+  dependencies:
+    delayed-stream "~1.0.0"
+
+core-util-is@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+dashdash@^1.12.0:
+  version "1.14.1"
+  resolved "https://registry.yarnpkg.com/dashdash/-/dashdash-1.14.1.tgz#853cfa0f7cbe2fed5de20326b8dd581035f6e2f0"
+  integrity sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=
+  dependencies:
+    assert-plus "^1.0.0"
+
+delayed-stream@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
+  integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
+
+dom-walk@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
+  integrity sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg=
+
+ecc-jsbn@~0.1.1:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
+  integrity sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=
+  dependencies:
+    jsbn "~0.1.0"
+    safer-buffer "^2.1.0"
+
+extend@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
+  integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
+
+extsprintf@1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
+  integrity sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=
+
+extsprintf@^1.2.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
+  integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
+
+fast-deep-equal@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
+  integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
+  integrity sha1-1RQsDK7msRifh9OnYREGT4bIu/I=
+
+for-each@^0.3.2:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.3.tgz#69b447e88a0a5d32c3e7084f3f1710034b21376e"
+  integrity sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==
+  dependencies:
+    is-callable "^1.1.3"
+
+forever-agent@~0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
+  integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
+
+form-data@~2.3.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
+  integrity sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.6"
+    mime-types "^2.1.12"
+
+getpass@^0.1.1:
+  version "0.1.7"
+  resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
+  integrity sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=
+  dependencies:
+    assert-plus "^1.0.0"
+
+global@~4.3.0:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
+  integrity sha1-52mJJopsdMOJCLEwWxD8DjlOnQ8=
+  dependencies:
+    min-document "^2.19.0"
+    process "~0.5.1"
+
+har-schema@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
+  integrity sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=
+
+har-validator@~5.1.0:
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.1.3.tgz#1ef89ebd3e4996557675eed9893110dc350fa080"
+  integrity sha512-sNvOCzEQNr/qrvJgc3UG/kD4QtlHycrzwS+6mfTrrSq97BvaYcPZZI1ZSqGSPR73Cxn4LKTD4PttRwfU7jWq5g==
+  dependencies:
+    ajv "^6.5.5"
+    har-schema "^2.0.0"
+
+http-signature@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
+  integrity sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=
+  dependencies:
+    assert-plus "^1.0.0"
+    jsprim "^1.2.2"
+    sshpk "^1.7.0"
+
+is-callable@^1.1.3:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
+  integrity sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==
+
+is-function@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-function/-/is-function-1.0.1.tgz#12cfb98b65b57dd3d193a3121f5f6e2f437602b5"
+  integrity sha1-Es+5i2W1fdPRk6MSH19uL0N2ArU=
+
+is-typedarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
+  integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
+
+isstream@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
+  integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
+
+jsbn@~0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
+  integrity sha1-peZUwuWi3rXyAdls77yoDA7y9RM=
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema@0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
+  integrity sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM=
+
+json-stringify-safe@~5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
+  integrity sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=
+
+jsprim@^1.2.2:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"
+  integrity sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=
+  dependencies:
+    assert-plus "1.0.0"
+    extsprintf "1.3.0"
+    json-schema "0.2.3"
+    verror "1.10.0"
+
+lodash@4.17.10:
+  version "4.17.10"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
+  integrity sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==
+
+mime-db@~1.37.0:
+  version "1.37.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.37.0.tgz#0b6a0ce6fdbe9576e25f1f2d2fde8830dc0ad0d8"
+  integrity sha512-R3C4db6bgQhlIhPU48fUtdVmKnflq+hRdad7IyKhtFj06VPNVdk2RhiYL3UjQIlso8L+YxAtFkobT0VK+S/ybg==
+
+mime-types@^2.1.12, mime-types@~2.1.19:
+  version "2.1.21"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.21.tgz#28995aa1ecb770742fe6ae7e58f9181c744b3f96"
+  integrity sha512-3iL6DbwpyLzjR3xHSFNFeb9Nz/M8WDkX33t1GFQnFOllWk8pOrh/LSrB5OXlnlW5P9LH73X6loW/eogc+F5lJg==
+  dependencies:
+    mime-db "~1.37.0"
+
+min-document@^2.19.0:
+  version "2.19.0"
+  resolved "https://registry.yarnpkg.com/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
+  integrity sha1-e9KC4/WELtKVu3SM3Z8f+iyCRoU=
+  dependencies:
+    dom-walk "^0.1.0"
+
+oauth-sign@~0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
+  integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
+
+parse-headers@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/parse-headers/-/parse-headers-2.0.1.tgz#6ae83a7aa25a9d9b700acc28698cd1f1ed7e9536"
+  integrity sha1-aug6eqJanZtwCswoaYzR8e1+lTY=
+  dependencies:
+    for-each "^0.3.2"
+    trim "0.0.1"
+
+performance-now@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
+  integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
+
+process@~0.5.1:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
+  integrity sha1-FjjYqONML0QKkduVq5rrZ3/Bhc8=
+
+psl@^1.1.24:
+  version "1.1.29"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.1.29.tgz#60f580d360170bb722a797cc704411e6da850c67"
+  integrity sha512-AeUmQ0oLN02flVHXWh9sSJF7mcdFq0ppid/JkErufc3hGIV/AMa8Fo9VgDo/cT2jFdOWoFvHp90qqBH54W+gjQ==
+
+punycode@^1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
+  integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
+
+punycode@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+qs@~6.5.2:
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
+  integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
+
+request@2.88.0:
+  version "2.88.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.88.0.tgz#9c2fca4f7d35b592efe57c7f0a55e81052124fef"
+  integrity sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.8.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.6"
+    extend "~3.0.2"
+    forever-agent "~0.6.1"
+    form-data "~2.3.2"
+    har-validator "~5.1.0"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.19"
+    oauth-sign "~0.9.0"
+    performance-now "^2.1.0"
+    qs "~6.5.2"
+    safe-buffer "^5.1.2"
+    tough-cookie "~2.4.3"
+    tunnel-agent "^0.6.0"
+    uuid "^3.3.2"
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+sshpk@^1.7.0:
+  version "1.15.2"
+  resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.15.2.tgz#c946d6bd9b1a39d0e8635763f5242d6ed6dcb629"
+  integrity sha512-Ra/OXQtuh0/enyl4ETZAfTaeksa6BXks5ZcjpSUNrjBr0DvrJKX+1fsKDPpT9TBXgHAFsa4510aNVgI8g/+SzA==
+  dependencies:
+    asn1 "~0.2.3"
+    assert-plus "^1.0.0"
+    bcrypt-pbkdf "^1.0.0"
+    dashdash "^1.12.0"
+    ecc-jsbn "~0.1.1"
+    getpass "^0.1.1"
+    jsbn "~0.1.0"
+    safer-buffer "^2.0.2"
+    tweetnacl "~0.14.0"
+
+tough-cookie@~2.4.3:
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.4.3.tgz#53f36da3f47783b0925afa06ff9f3b165280f781"
+  integrity sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==
+  dependencies:
+    psl "^1.1.24"
+    punycode "^1.4.1"
+
+trim@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/trim/-/trim-0.0.1.tgz#5858547f6b290757ee95cccc666fb50084c460dd"
+  integrity sha1-WFhUf2spB1fulczMZm+1AITEYN0=
+
+tunnel-agent@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
+  integrity sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=
+  dependencies:
+    safe-buffer "^5.0.1"
+
+tweetnacl@^0.14.3, tweetnacl@~0.14.0:
+  version "0.14.5"
+  resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
+  integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
+
+uri-js@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
+  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
+  dependencies:
+    punycode "^2.1.0"
+
+uuid@^3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
+  integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
+
+verror@1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"
+  integrity sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=
+  dependencies:
+    assert-plus "^1.0.0"
+    core-util-is "1.0.2"
+    extsprintf "^1.2.0"
+
+xhr@2.3.3:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.3.3.tgz#ad6b810e0917ce72b5ec704f5d41f1503b8e7524"
+  integrity sha1-rWuBDgkXznK17HBPXUHxUDuOdSQ=
+  dependencies:
+    global "~4.3.0"
+    is-function "^1.0.1"
+    parse-headers "^2.0.0"
+    xtend "^4.0.0"
+
+xtend@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
+  integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=

test/integration/now-node/aws-sdk/index.js

@@ -0,0 +1,6 @@
+// eslint-disable-next-line no-unused-vars
+const aws = require('aws-sdk');
+
+module.exports = (req, res) => {
+  res.end('Hello world');
+};

test/integration/now-node/aws-sdk/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "index.js", "use": "@now/node"}
+  ]
+}

test/integration/now-node/aws-sdk/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "aws-sdk",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "aws-sdk": "^2.353.0"
+  }
+}

test/integration/now-node/aws-sdk/yarn.lock

@@ -0,0 +1,103 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+aws-sdk@^2.353.0:
+  version "2.353.0"
+  resolved "https://registry.yarnpkg.com/aws-sdk/-/aws-sdk-2.353.0.tgz#3c809d2b02834d892a3f5c3f1171273b336e5692"
+  integrity sha512-c5MwJhfcHwA2lC1Wq9csQvP9gz8dVGpZ64s5j9f/sWY6eZiDCQ6OWjxj+VJfpnCmfxyC/pdZO7JDGwems7dqIQ==
+  dependencies:
+    buffer "4.9.1"
+    events "1.1.1"
+    ieee754 "1.1.8"
+    jmespath "0.15.0"
+    querystring "0.2.0"
+    sax "1.2.1"
+    url "0.10.3"
+    uuid "3.1.0"
+    xml2js "0.4.19"
+
+base64-js@^1.0.2:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.3.0.tgz#cab1e6118f051095e58b5281aea8c1cd22bfc0e3"
+  integrity sha512-ccav/yGvoa80BQDljCxsmmQ3Xvx60/UpBIij5QN21W3wBi/hhIC9OoO+KLpu9IJTS9j4DRVJ3aDDF9cMSoa2lw==
+
+buffer@4.9.1:
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/buffer/-/buffer-4.9.1.tgz#6d1bb601b07a4efced97094132093027c95bc298"
+  integrity sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=
+  dependencies:
+    base64-js "^1.0.2"
+    ieee754 "^1.1.4"
+    isarray "^1.0.0"
+
+events@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/events/-/events-1.1.1.tgz#9ebdb7635ad099c70dcc4c2a1f5004288e8bd924"
+  integrity sha1-nr23Y1rQmccNzEwqH1AEKI6L2SQ=
+
+ieee754@1.1.8:
+  version "1.1.8"
+  resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.8.tgz#be33d40ac10ef1926701f6f08a2d86fbfd1ad3e4"
+  integrity sha1-vjPUCsEO8ZJnAfbwii2G+/0a0+Q=
+
+ieee754@^1.1.4:
+  version "1.1.12"
+  resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.12.tgz#50bf24e5b9c8bb98af4964c941cdb0918da7b60b"
+  integrity sha512-GguP+DRY+pJ3soyIiGPTvdiVXjZ+DbXOxGpXn3eMvNW4x4irjqXm4wHKscC+TfxSJ0yw/S1F24tqdMNsMZTiLA==
+
+isarray@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+jmespath@0.15.0:
+  version "0.15.0"
+  resolved "https://registry.yarnpkg.com/jmespath/-/jmespath-0.15.0.tgz#a3f222a9aae9f966f5d27c796510e28091764217"
+  integrity sha1-o/Iiqarp+Wb10nx5ZRDigJF2Qhc=
+
+punycode@1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
+  integrity sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0=
+
+querystring@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/querystring/-/querystring-0.2.0.tgz#b209849203bb25df820da756e747005878521620"
+  integrity sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA=
+
+sax@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.1.tgz#7b8e656190b228e81a66aea748480d828cd2d37a"
+  integrity sha1-e45lYZCyKOgaZq6nSEgNgozS03o=
+
+sax@>=0.6.0:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
+  integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
+
+url@0.10.3:
+  version "0.10.3"
+  resolved "https://registry.yarnpkg.com/url/-/url-0.10.3.tgz#021e4d9c7705f21bbf37d03ceb58767402774c64"
+  integrity sha1-Ah5NnHcF8hu/N9A861h2dAJ3TGQ=
+  dependencies:
+    punycode "1.3.2"
+    querystring "0.2.0"
+
+uuid@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.1.0.tgz#3dd3d3e790abc24d7b0d3a034ffababe28ebbc04"
+  integrity sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g==
+
+xml2js@0.4.19:
+  version "0.4.19"
+  resolved "https://registry.yarnpkg.com/xml2js/-/xml2js-0.4.19.tgz#686c20f213209e94abf0d1bcf1efaa291c7827a7"
+  integrity sha512-esZnJZJOiJR9wWKMyuvSE1y6Dq5LCuJanqhxslH2bxM6duahNZ+HMpCLhBQGZkbX6xRf8x1Y2eJlgt2q3qo49Q==
+  dependencies:
+    sax ">=0.6.0"
+    xmlbuilder "~9.0.1"
+
+xmlbuilder@~9.0.1:
+  version "9.0.7"
+  resolved "https://registry.yarnpkg.com/xmlbuilder/-/xmlbuilder-9.0.7.tgz#132ee63d2ec5565c557e20f4c22df9aca686b10d"
+  integrity sha1-Ey7mPS7FVlxVfiD0wi35rKaGsQ0=

test/integration/now-node/axios/index.js

@@ -0,0 +1,6 @@
+// eslint-disable-next-line no-unused-vars
+const axios = require('axios');
+
+module.exports = (req, res) => {
+  res.end('Hello world');
+};

test/integration/now-node/axios/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "index.js", "use": "@now/node"}
+  ]
+}

test/integration/now-node/axios/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "axios",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "axios": "^0.18.0"
+  }
+}

test/integration/now-node/axios/yarn.lock

@@ -0,0 +1,35 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+axios@^0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-0.18.0.tgz#32d53e4851efdc0a11993b6cd000789d70c05102"
+  integrity sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=
+  dependencies:
+    follow-redirects "^1.3.0"
+    is-buffer "^1.1.5"
+
+debug@=3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
+  dependencies:
+    ms "2.0.0"
+
+follow-redirects@^1.3.0:
+  version "1.5.9"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.5.9.tgz#c9ed9d748b814a39535716e531b9196a845d89c6"
+  integrity sha512-Bh65EZI/RU8nx0wbYF9shkFZlqLP+6WT/5FnA3cE/djNSuKNHJEinGGZgu/cQEkeeb2GdFOgenAmn8qaqYke2w==
+  dependencies:
+    debug "=3.1.0"
+
+is-buffer@^1.1.5:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=

test/integration/now-node/index.test.js

@@ -0,0 +1,45 @@
+/* global it, expect */
+const path = require('path');
+const runBuildLambda = require('../../lib/run-build-lambda');
+
+const TWO_MINUTES = 120000;
+
+function runBuildForFolder(folder) {
+  return runBuildLambda(path.join(__dirname, folder));
+}
+
+it(
+  'Should build the airtable folder',
+  async () => {
+    const { buildResult } = await runBuildForFolder('airtable');
+    expect(buildResult['index.js']).toBeDefined();
+  },
+  TWO_MINUTES,
+);
+
+it(
+  'Should build the aws-sdk folder',
+  async () => {
+    const { buildResult } = await runBuildForFolder('aws-sdk');
+    expect(buildResult['index.js']).toBeDefined();
+  },
+  TWO_MINUTES,
+);
+
+it(
+  'Should build the axios folder',
+  async () => {
+    const { buildResult } = await runBuildForFolder('axios');
+    expect(buildResult['index.js']).toBeDefined();
+  },
+  TWO_MINUTES,
+);
+
+it(
+  'Should build the mongoose folder',
+  async () => {
+    const { buildResult } = await runBuildForFolder('mongoose');
+    expect(buildResult['index.js']).toBeDefined();
+  },
+  TWO_MINUTES,
+);

test/integration/now-node/mongoose/index.js

@@ -0,0 +1,6 @@
+// eslint-disable-next-line no-unused-vars
+const mongoose = require('mongoose');
+
+module.exports = (req, res) => {
+  res.end('Hello world');
+};

test/integration/now-node/mongoose/now.json

@@ -0,0 +1,6 @@
+{
+  "version": 2,
+  "builds": [
+    {"src": "index.js", "use": "@now/node"}
+  ]
+}

test/integration/now-node/mongoose/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "mongoose",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "mongoose": "^5.3.11"
+  }
+}

test/integration/now-node/mongoose/yarn.lock

@@ -0,0 +1,158 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+async@2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.1.tgz#b245a23ca71930044ec53fa46aa00a3e87c6a610"
+  integrity sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==
+  dependencies:
+    lodash "^4.17.10"
+
+bluebird@3.5.1:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
+  integrity sha512-MKiLiV+I1AA596t9w1sQJ8jkiSr5+ZKi0WKrYGUn6d1Fx+Ij4tIj+m2WMQSGczs5jZVxV339chE8iwk6F64wjA==
+
+bson@^1.1.0, bson@~1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/bson/-/bson-1.1.0.tgz#bee57d1fb6a87713471af4e32bcae36de814b5b0"
+  integrity sha512-9Aeai9TacfNtWXOYarkFJRW2CWo+dRon+fuLZYJmvLV3+MiUp0bEI6IAZfXEIg7/Pl/7IWlLaDnhzTsD81etQA==
+
+debug@3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  integrity sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==
+  dependencies:
+    ms "2.0.0"
+
+kareem@2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/kareem/-/kareem-2.3.0.tgz#ef33c42e9024dce511eeaf440cd684f3af1fc769"
+  integrity sha512-6hHxsp9e6zQU8nXsP+02HGWXwTkOEw6IROhF2ZA28cYbUk4eJ6QbtZvdqZOdD9YPKghG3apk5eOCvs+tLl3lRg==
+
+lodash.get@4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
+  integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
+
+lodash@^4.17.10:
+  version "4.17.11"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+
+memory-pager@^1.0.2:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/memory-pager/-/memory-pager-1.1.0.tgz#9308915e0e972849fefbae6f8bc95d6b350e7344"
+  integrity sha512-Mf9OHV/Y7h6YWDxTzX/b4ZZ4oh9NSXblQL8dtPCOomOtZciEHxePR78+uHFLLlsk01A6jVHhHsQZZ/WcIPpnzg==
+
+mongodb-core@3.1.7:
+  version "3.1.7"
+  resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-3.1.7.tgz#fe61853a6a6acbd2046c91794e5325ecad85428a"
+  integrity sha512-YffpSrLmgFNmrvkGx+yX00KyBNk64C0BalfEn6vHHkXtcMUGXw8nxrMmhq5eXPLLlYeBpD/CsgNxE2Chf0o4zQ==
+  dependencies:
+    bson "^1.1.0"
+    require_optional "^1.0.1"
+    safe-buffer "^5.1.2"
+  optionalDependencies:
+    saslprep "^1.0.0"
+
+mongodb@3.1.8:
+  version "3.1.8"
+  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-3.1.8.tgz#df8084fda2efdbaddd05dfd6a269891fc4cc72df"
+  integrity sha512-yNKwYxQ6m00NV6+pMoWoheFTHSQVv1KkSrfOhRDYMILGWDYtUtQRqHrFqU75rmPIY8hMozVft8zdC4KYMWaM3Q==
+  dependencies:
+    mongodb-core "3.1.7"
+    safe-buffer "^5.1.2"
+
+mongoose-legacy-pluralize@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/mongoose-legacy-pluralize/-/mongoose-legacy-pluralize-1.0.2.tgz#3ba9f91fa507b5186d399fb40854bff18fb563e4"
+  integrity sha512-Yo/7qQU4/EyIS8YDFSeenIvXxZN+ld7YdV9LqFVQJzTLye8unujAWPZ4NWKfFA+RNjh+wvTWKY9Z3E5XM6ZZiQ==
+
+mongoose@^5.3.11:
+  version "5.3.11"
+  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-5.3.11.tgz#ab71e070dabcb8b2aebff4702a09198a3f8a9401"
+  integrity sha512-LrsatxtUfZAerAxyFiaw/8T8M4T9Ff9+6wFkJwfTVDz9skX+HVOs70QOzTDawz0k0Q0I6qt9xv/ZYQi2Paykgw==
+  dependencies:
+    async "2.6.1"
+    bson "~1.1.0"
+    kareem "2.3.0"
+    lodash.get "4.4.2"
+    mongodb "3.1.8"
+    mongodb-core "3.1.7"
+    mongoose-legacy-pluralize "1.0.2"
+    mpath "0.5.1"
+    mquery "3.2.0"
+    ms "2.0.0"
+    regexp-clone "0.0.1"
+    safe-buffer "5.1.2"
+    sliced "1.0.1"
+
+mpath@0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.5.1.tgz#17131501f1ff9e6e4fbc8ffa875aa7065b5775ab"
+  integrity sha512-H8OVQ+QEz82sch4wbODFOz+3YQ61FYz/z3eJ5pIdbMEaUzDqA268Wd+Vt4Paw9TJfvDgVKaayC0gBzMIw2jhsg==
+
+mquery@3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/mquery/-/mquery-3.2.0.tgz#e276472abd5109686a15eb2a8e0761db813c81cc"
+  integrity sha512-qPJcdK/yqcbQiKoemAt62Y0BAc0fTEKo1IThodBD+O5meQRJT/2HSe5QpBNwaa4CjskoGrYWsEyjkqgiE0qjhg==
+  dependencies:
+    bluebird "3.5.1"
+    debug "3.1.0"
+    regexp-clone "0.0.1"
+    safe-buffer "5.1.2"
+    sliced "1.0.1"
+
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
+
+regexp-clone@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/regexp-clone/-/regexp-clone-0.0.1.tgz#a7c2e09891fdbf38fbb10d376fb73003e68ac589"
+  integrity sha1-p8LgmJH9vzj7sQ03b7cwA+aKxYk=
+
+require_optional@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/require_optional/-/require_optional-1.0.1.tgz#4cf35a4247f64ca3df8c2ef208cc494b1ca8fc2e"
+  integrity sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==
+  dependencies:
+    resolve-from "^2.0.0"
+    semver "^5.1.0"
+
+resolve-from@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-2.0.0.tgz#9480ab20e94ffa1d9e80a804c7ea147611966b57"
+  integrity sha1-lICrIOlP+h2egKgEx+oUdhGWa1c=
+
+safe-buffer@5.1.2, safe-buffer@^5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+saslprep@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/saslprep/-/saslprep-1.0.2.tgz#da5ab936e6ea0bbae911ffec77534be370c9f52d"
+  integrity sha512-4cDsYuAjXssUSjxHKRe4DTZC0agDwsCqcMqtJAQPzC74nJ7LfAJflAtC1Zed5hMzEQKj82d3tuzqdGNRsLJ4Gw==
+  dependencies:
+    sparse-bitfield "^3.0.3"
+
+semver@^5.1.0:
+  version "5.6.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
+  integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
+
+sliced@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/sliced/-/sliced-1.0.1.tgz#0b3a662b5d04c3177b1926bea82b03f837a2ef41"
+  integrity sha1-CzpmK10Ewxd7GSa+qCsD+Dei70E=
+
+sparse-bitfield@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz#ff4ae6e68656056ba4b3e792ab3334d38273ca11"
+  integrity sha1-/0rm5oZWBWuks+eSqzM004JzyhE=
+  dependencies:
+    memory-pager "^1.0.2"

test/lib/run-build-lambda.js

@@ -0,0 +1,42 @@
+/* global expect */
+const getWritableDirectory = require('../../packages/now-build-utils/fs/get-writable-directory.js');
+const glob = require('../../packages/now-build-utils/fs/glob.js');
+
+function runAnalyze(wrapper, context) {
+  if (wrapper.analyze) {
+    return wrapper.analyze(context);
+  }
+
+  return 'this-is-a-fake-analyze-result-from-default-analyze';
+}
+
+async function runBuildLambda(inputPath) {
+  const inputFiles = await glob('**', inputPath);
+  const nowJsonRef = inputFiles['now.json'];
+  expect(nowJsonRef).toBeDefined();
+  const nowJson = require(nowJsonRef.fsPath);
+  expect(nowJson.builds.length).toBe(1);
+  const build = nowJson.builds[0];
+  expect(build.src.includes('*')).toBeFalsy();
+  const entrypoint = build.src.replace(/^\//, ''); // strip leftmost slash
+  expect(inputFiles[entrypoint]).toBeDefined();
+  inputFiles[entrypoint].digest = 'this-is-a-fake-digest-for-non-default-analyze';
+  const wrapper = require(build.use);
+
+  const analyzeResult = runAnalyze(wrapper, {
+    files: inputFiles,
+    entrypoint,
+    config: build.config,
+  });
+  console.log(analyzeResult);
+  const workPath = await getWritableDirectory();
+  const buildResult = await wrapper.build({
+    files: inputFiles, entrypoint, config: build.config, workPath,
+  });
+  return {
+    analyzeResult,
+    buildResult,
+  };
+}
+
+module.exports = runBuildLambda;

test/unit/now-next/utils.test.js

@@ -0,0 +1,292 @@
+const {
+  excludeFiles,
+  validateEntrypoint,
+  includeOnlyEntryDirectory,
+  moveEntryDirectoryToRoot,
+  excludeLockFiles,
+  normalizePackageJson,
+  excludeStaticDirectory,
+} = require('@now/next/utils');
+const FileRef = require('@now/build-utils/file-ref');
+
+describe('excludeFiles', () => {
+  it('should exclude files', () => {
+    const files = {
+      'pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+    };
+    const result = excludeFiles(
+      files,
+      filePath => filePath === 'package-lock.json',
+    );
+    expect(result['pages/index.js']).toBeDefined();
+    expect(result['package.json']).toBeDefined();
+    expect(result['package-lock.json']).toBeUndefined();
+  });
+});
+
+describe('validateEntrypoint', () => {
+  it('should allow package.json', () => {
+    expect(validateEntrypoint('package.json')).toBeUndefined();
+  });
+  it('should allow nested package.json', () => {
+    expect(validateEntrypoint('frontend/package.json')).toBeUndefined();
+  });
+  it('should allow next.config.js', () => {
+    expect(validateEntrypoint('next.config.js')).toBeUndefined();
+  });
+  it('should allow nested next.config.js', () => {
+    expect(validateEntrypoint('frontend/next.config.js')).toBeUndefined();
+  });
+  it('should not allow pages/index.js', () => {
+    expect(() => validateEntrypoint('pages/index.js')).toThrow();
+  });
+});
+
+describe('includeOnlyEntryDirectory', () => {
+  it('should exclude files outside entry directory', () => {
+    const entryDirectory = 'frontend';
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+    };
+    const result = includeOnlyEntryDirectory(files, entryDirectory);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['package.json']).toBeUndefined();
+    expect(result['package-lock.json']).toBeUndefined();
+  });
+
+  it('should handle entry directory being dot', () => {
+    const entryDirectory = '.';
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+    };
+    const result = includeOnlyEntryDirectory(files, entryDirectory);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['package.json']).toBeDefined();
+    expect(result['package-lock.json']).toBeDefined();
+  });
+});
+
+describe('moveEntryDirectoryToRoot', () => {
+  it('should move entrydirectory files to the root', () => {
+    const entryDirectory = 'frontend';
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+    };
+    const result = moveEntryDirectoryToRoot(files, entryDirectory);
+    expect(result['pages/index.js']).toBeDefined();
+  });
+
+  it('should work with deep nested subdirectories', () => {
+    const entryDirectory = 'frontend/my/app';
+    const files = {
+      'frontend/my/app/pages/index.js': new FileRef({ digest: 'index' }),
+    };
+    const result = moveEntryDirectoryToRoot(files, entryDirectory);
+    expect(result['pages/index.js']).toBeDefined();
+  });
+
+  it('should do nothing when entry directory is dot', () => {
+    const entryDirectory = '.';
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+    };
+    const result = moveEntryDirectoryToRoot(files, entryDirectory);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+  });
+});
+
+describe('excludeLockFiles', () => {
+  it('should remove package-lock.json', () => {
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+    };
+    const result = excludeLockFiles(files);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['package-lock.json']).toBeUndefined();
+  });
+
+  it('should remove yarn.lock', () => {
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'yarn.lock': new FileRef({ digest: 'yarn-lock' }),
+    };
+    const result = excludeLockFiles(files);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['yarn.lock']).toBeUndefined();
+  });
+
+  it('should remove both package-lock.json and yarn.lock', () => {
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'yarn.lock': new FileRef({ digest: 'yarn-lock' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+    };
+    const result = excludeLockFiles(files);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['yarn.lock']).toBeUndefined();
+    expect(result['package-lock.json']).toBeUndefined();
+  });
+});
+
+describe('excludeStaticDirectory', () => {
+  it('should remove the /static directory files', () => {
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'yarn.lock': new FileRef({ digest: 'yarn-lock' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+      'static/image.png': new FileRef({ digest: 'image' }),
+    };
+    const result = excludeStaticDirectory(files);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['yarn.lock']).toBeDefined();
+    expect(result['package-lock.json']).toBeDefined();
+    expect(result['static/image.png']).toBeUndefined();
+  });
+
+  it('should remove the nested /static directory files', () => {
+    const files = {
+      'frontend/pages/index.js': new FileRef({ digest: 'index' }),
+      'package.json': new FileRef({ digest: 'package' }),
+      'yarn.lock': new FileRef({ digest: 'yarn-lock' }),
+      'package-lock.json': new FileRef({ digest: 'package-lock' }),
+      'static/images/png/image.png': new FileRef({ digest: 'image' }),
+    };
+    const result = excludeStaticDirectory(files);
+    expect(result['frontend/pages/index.js']).toBeDefined();
+    expect(result['yarn.lock']).toBeDefined();
+    expect(result['package-lock.json']).toBeDefined();
+    expect(result['static/images/png/image.png']).toBeUndefined();
+  });
+});
+
+describe('normalizePackageJson', () => {
+  it('should work without a package.json being supplied', () => {
+    const result = normalizePackageJson();
+    expect(result).toEqual({
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    });
+  });
+
+  it('should work with a package.json being supplied', () => {
+    const defaultPackage = {
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    };
+    const result = normalizePackageJson(defaultPackage);
+    expect(result).toEqual({
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    });
+  });
+
+  it('should force next@canary to be a devDependency', () => {
+    const defaultPackage = {
+      dependencies: {
+        react: 'latest',
+        'react-dom': 'latest',
+        next: 'latest',
+      },
+    };
+    const result = normalizePackageJson(defaultPackage);
+    expect(result).toEqual({
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    });
+  });
+
+  it('should force next-server@canary to be a dependency', () => {
+    const defaultPackage = {
+      dependencies: {
+        react: 'latest',
+        'react-dom': 'latest',
+        next: 'latest',
+      },
+    };
+    const result = normalizePackageJson(defaultPackage);
+    expect(result).toEqual({
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    });
+  });
+
+  it('should force now-build script', () => {
+    const defaultPackage = {
+      dependencies: {
+        react: 'latest',
+        'react-dom': 'latest',
+        next: 'latest',
+      },
+    };
+    const result = normalizePackageJson(defaultPackage);
+    expect(result).toEqual({
+      dependencies: {
+        'next-server': 'canary',
+        react: 'latest',
+        'react-dom': 'latest',
+      },
+      devDependencies: {
+        next: 'canary',
+      },
+      scripts: {
+        'now-build': 'next build',
+      },
+    });
+  });
+});

tsconfig.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "module": "commonjs",
+    "lib": ["es2017"],
+    "allowJs": true,
+    "checkJs": true,
+    "noEmit": true,
+    "strict": false,
+    "types": ["node"],
+    "esModuleInterop": true
+  },
+  "include": [
+    "./packages/now-node/index.js",
+    "./packages/now-build-utils/file-ref.js",
+    "./packages/now-build-utils/file-fs-ref.js",
+    "./packages/now-build-utils/fs/rename.js",
+    "./packages/now-build-utils/fs/download.js",
+    "./packages/now-build-utils/fs/glob.js",
+    "./packages/now-next"
+  ],
+  "exclude": [
+    "./packages/now-next/launcher.js"
+  ]
+}