Publish

- @now/build-utils@0.4.38-canary.0
 - @now/python@0.0.42-canary.1

.circleci/build.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+circleci_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+needs_build="$(grep -rn '"build"' packages/*/package.json | cut -d: -f1)"
+
+for pkg in $needs_build; do
+  dir="$(dirname "$pkg")"
+  cd "$circleci_dir/../$dir"
+  echo "Building \`$dir\`"
+  yarn build
+done

.circleci/config.yml

@@ -20,6 +20,9 @@ jobs:
       - run:
           name: Bootstrapping
           command: yarn bootstrap
+      - run:
+          name: Building
+          command: ./.circleci/build.sh
       - run:
           name: Linting
           command: yarn lint
@@ -30,11 +33,8 @@ jobs:
           name: Potentially save npm token
           command: "([[ ! -z $NPM_TOKEN ]] && echo \"//registry.npmjs.org/:_authToken=$NPM_TOKEN\" >> ~/.npmrc) || echo \"Did not write npm token\""
       - run:
-          name: Potentially publish canary release
-          command: "if ls ~/.npmrc >/dev/null 2>&1 && [[ $(git describe --exact-match 2> /dev/null || :) =~ -canary ]]; then yarn run lerna publish from-git --npm-tag canary --yes; else  echo \"Did not publish\"; fi"
-      - run:
-          name: Potentially publish stable release
-          command: "if ls ~/.npmrc >/dev/null 2>&1 && [[ ! $(git describe --exact-match 2> /dev/null || :) =~ -canary ]]; then yarn run lerna publish from-git --yes; else  echo \"Did not publish\"; fi"
+          name: Potentially publish releases to npm
+          command: ./.circleci/publish.sh
 workflows:
   version: 2
   build-and-deploy:

.circleci/publish.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+set -euo pipefail
+
+if [ ! -e ~/.npmrc ]; then
+  echo "~/.npmrc file does not exist, skipping publish"
+  exit 0
+fi
+
+npm_tag=""
+tag="$(git describe --tags --exact-match 2> /dev/null || :)"
+
+if [ -z "$tag" ]; then
+  echo "Not a tagged commit, skipping publish"
+  exit 0
+fi
+
+if [[ "$tag" =~ -canary ]]; then
+  echo "Publishing canary release"
+  npm_tag="--npm-tag canary"
+else
+  echo "Publishing stable release"
+fi
+
+yarn run lerna publish from-git $npm_tag --yes

.eslintignore

@@ -1,3 +1,7 @@
 /tmp/*
 /node_modules/*
 /**/node_modules/*
+/packages/now-go/go/*
+/packages/now-build-utils/dist/*
+/packages/now-node/dist/*
+/packages/now-node-bridge/*

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "singleQuote": true
+}

errors/now-next-no-serverless-pages-built.md

@@ -29,11 +29,13 @@ npm install next --save
 ```js
 module.exports = {
   target: 'serverless'
-  // Other options are still valid
+  // Other options
 }
 ```
 
-4. Optionally make sure the `"src"` in `"builds"` points to your application `package.json`
+4. Remove `distDir` from `next.config.js` as `@now/next` can't parse this file and expects your build output at `/.next`
+
+5. Optionally make sure the `"src"` in `"builds"` points to your application `package.json`
 
 ```js
 {

package.json

@@ -14,14 +14,15 @@
     "bootstrap": "lerna bootstrap",
     "publish-stable": "lerna version",
     "publish-canary": "lerna version prerelease --preid canary",
-    "lint": "tsc && eslint .",
+    "build": "./.circleci/build.sh",
+    "lint": "eslint .",
     "test": "jest --runInBand --verbose",
     "lint-staged": "lint-staged"
   },
   "pre-commit": "lint-staged",
   "lint-staged": {
     "*.js": [
-      "prettier --write --single-quote",
+      "prettier --write",
       "eslint --fix",
       "git add"
     ]
@@ -43,7 +44,6 @@
     "lint-staged": "^8.0.4",
     "node-fetch": "^2.3.0",
     "pre-commit": "^1.2.2",
-    "prettier": "^1.15.2",
-    "typescript": "^3.1.6"
+    "prettier": "^1.15.2"
   }
 }

packages/now-bash/index.js

@@ -12,9 +12,10 @@ exports.config = {
 
 exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest;
 
-exports.build = async ({ files, entrypoint, config }) => {
+exports.build = async ({
+  workPath, files, entrypoint, config,
+}) => {
   const srcDir = await getWritableDirectory();
-  const workDir = await getWritableDirectory();
 
   console.log('downloading files...');
   await download(files, srcDir);
@@ -24,7 +25,7 @@ exports.build = async ({ files, entrypoint, config }) => {
     return o;
   }, {});
 
-  const IMPORT_CACHE = `${workDir}/.import-cache`;
+  const IMPORT_CACHE = `${workPath}/.import-cache`;
   const env = Object.assign({}, process.env, configEnv, {
     PATH: `${IMPORT_CACHE}/bin:${process.env.PATH}`,
     IMPORT_CACHE,
@@ -37,12 +38,12 @@ exports.build = async ({ files, entrypoint, config }) => {
 
   await execa(builderPath, [entrypoint], {
     env,
-    cwd: workDir,
+    cwd: workPath,
     stdio: 'inherit',
   });
 
   const lambda = await createLambda({
-    files: await glob('**', workDir),
+    files: await glob('**', workPath),
     handler: entrypoint, // not actually used in `bootstrap`
     runtime: 'provided',
     environment: Object.assign({}, configEnv, {

packages/now-bash/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/bash",
-  "version": "0.1.2",
+  "version": "0.1.5-canary.0",
   "description": "Now 2.0 builder for HTTP endpoints written in Bash",
   "main": "index.js",
   "author": "Nathan Rajlich <nate@zeit.co>",

packages/now-bash/runtime.sh

@@ -54,9 +54,10 @@ _lambda_runtime_next() {
 	local stdin
 	stdin="$(mktemp -u)"
 	mkfifo "$stdin"
-	_lambda_runtime_body "$event" > "$stdin" &
+	_lambda_runtime_body < "$event" > "$stdin" &
 
 	handler "$event" < "$stdin" > "$body" || exit_code="$?"
+
 	rm -f "$event" "$stdin"
 
 	if [ "$exit_code" -eq 0 ]; then
@@ -74,12 +75,14 @@ _lambda_runtime_next() {
 }
 
 _lambda_runtime_body() {
-	if [ "$(jq --raw-output '.body | type' < "$1")" = "string" ]; then
-		if [ "$(jq --raw-output '.encoding' < "$1")" = "base64" ]; then
-			jq --raw-output '.body' < "$1" | base64 -d
+	local event
+	event="$(cat)"
+	if [ "$(jq --raw-output '.body | type' <<< "$event")" = "string" ]; then
+		if [ "$(jq --raw-output '.encoding' <<< "$event")" = "base64" ]; then
+			jq --raw-output '.body' <<< "$event" | base64 --decode
 		else
 			# assume plain-text body
-			jq --raw-output '.body' < "$1"
+			jq --raw-output '.body' <<< "$event"
 		fi
 	fi
 }

packages/now-build-utils/.gitignore

@@ -0,0 +1 @@
+dist

packages/now-build-utils/.npmignore

@@ -1,2 +1,3 @@
+/src
 /test
 tmp

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

@@ -1,33 +1 @@
-const assert = require('assert');
-const intoStream = require('into-stream');
-
-class FileBlob {
-  constructor({ mode = 0o100644, data }) {
-    assert(typeof mode === 'number');
-    assert(typeof data === 'string' || Buffer.isBuffer(data));
-    this.type = 'FileBlob';
-    this.mode = mode;
-    this.data = data;
-  }
-
-  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('end', () => resolve());
-    });
-
-    const data = Buffer.concat(chunks);
-    return new FileBlob({ mode, data });
-  }
-
-  toStream() {
-    return intoStream(this.data);
-  }
-}
-
-module.exports = FileBlob;
+module.exports = require('./dist/index').FileBlob;

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

@@ -1,88 +1 @@
-const assert = require('assert');
-const fs = require('fs-extra');
-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 }) {
-    assert(typeof mode === 'number');
-    assert(typeof fsPath === 'string');
-    /** @type {string} */
-    this.type = 'FileFsRef';
-    /** @type {number} */
-    this.mode = mode;
-    /** @type {string} */
-    this.fsPath = 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');
-    await fs.mkdirp(path.dirname(fsPath));
-
-    await new Promise((resolve, reject) => {
-      const dest = fs.createWriteStream(fsPath);
-      stream.pipe(dest);
-      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 });
-  }
-
-  /**
-   * @returns {Promise<NodeJS.ReadableStream>}
-   */
-  async toStreamAsync() {
-    await semaToPreventEMFILE.acquire();
-    const release = () => semaToPreventEMFILE.release();
-    const stream = fs.createReadStream(this.fsPath);
-    stream.on('close', release);
-    stream.on('error', release);
-    return stream;
-  }
-
-  /**
-   * @returns {NodeJS.ReadableStream}
-   */
-  toStream() {
-    let flag;
-
-    // eslint-disable-next-line consistent-return
-    return multiStream((cb) => {
-      if (flag) return cb(null, null);
-      flag = true;
-
-      this.toStreamAsync()
-        .then((stream) => {
-          cb(null, stream);
-        })
-        .catch((error) => {
-          cb(error, null);
-        });
-    });
-  }
-}
-
-module.exports = FileFsRef;
+module.exports = require('./dist/index').FileFsRef;

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

@@ -1,96 +1 @@
-const assert = require('assert');
-const fetch = require('node-fetch');
-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 }) {
-    assert(typeof mode === 'number');
-    assert(typeof digest === 'string');
-    /** @type {string} */
-    this.type = 'FileRef';
-    /** @type {number} */
-    this.mode = mode;
-    /** @type {string} */
-    this.digest = digest;
-  }
-
-  /**
-   * @returns {Promise<NodeJS.ReadableStream>}
-   */
-  async toStreamAsync() {
-    let url;
-    // sha:24be087eef9fac01d61b30a725c1a10d7b45a256
-    const digestParts = this.digest.split(':');
-    if (digestParts[0] === 'sha') {
-      // url = `https://s3.amazonaws.com/now-files/${digestParts[1]}`;
-      url = `https://dmmcy0pwk6bqi.cloudfront.net/${digestParts[1]}`;
-    }
-
-    assert(url);
-
-    await semaToDownloadFromS3.acquire();
-    // console.time(`downloading ${url}`);
-    try {
-      return await retry(
-        async () => {
-          const resp = await fetch(url);
-          if (!resp.ok) {
-            const error = new BailableError(
-              `download: ${resp.status} ${resp.statusText} for ${url}`,
-            );
-            if (resp.status === 403) error.bail = true;
-            throw error;
-          }
-          return resp.body;
-        },
-        { factor: 1, retries: 3 },
-      );
-    } finally {
-      // console.timeEnd(`downloading ${url}`);
-      semaToDownloadFromS3.release();
-    }
-  }
-
-  /**
-   * @returns {NodeJS.ReadableStream}
-   */
-  toStream() {
-    let flag;
-
-    // eslint-disable-next-line consistent-return
-    return multiStream((cb) => {
-      if (flag) return cb(null, null);
-      flag = true;
-
-      this.toStreamAsync()
-        .then((stream) => {
-          cb(null, stream);
-        })
-        .catch((error) => {
-          cb(error, null);
-        });
-    });
-  }
-}
-
-module.exports = FileRef;
+module.exports = require('./dist/index').FileRef;

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

@@ -1,38 +1 @@
-const path = require('path');
-const FileFsRef = require('../file-fs-ref.js');
-
-/** @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 FileFsRef.fromStream({ mode, stream, fsPath });
-}
-
-/**
- * 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);
-    }),
-  );
-
-  return files2;
-};
+module.exports = require('../dist/fs/download').default;

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

@@ -1,12 +1 @@
-const path = require('path');
-const fs = require('fs-extra');
-
-const prod = process.env.AWS_EXECUTION_ENV || process.env.X_GOOGLE_CODE_LOCATION;
-const TMP_PATH = prod ? '/tmp' : path.join(__dirname, 'tmp');
-
-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);
-  return directory;
-};
+module.exports = require('../dist/fs/get-writable-directory').default;

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

@@ -1,67 +1 @@
-const assert = require('assert');
-const path = require('path');
-const vanillaGlob = require('glob');
-const FileFsRef = require('../file-fs-ref.js');
-
-/** @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') {
-      options = { cwd: opts };
-    } else {
-      options = opts;
-    }
-
-    if (!options.cwd) {
-      throw new Error(
-        'Second argument (basePath) must be specified for names of resulting files',
-      );
-    }
-
-    if (!path.isAbsolute(options.cwd)) {
-      throw new Error(`basePath/cwd must be an absolute path (${options.cwd})`);
-    }
-
-    options.statCache = {};
-    options.stat = true;
-    options.dot = true;
-
-    // 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(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;
-        }, {}),
-      );
-    });
-  });
-};
+module.exports = require('../dist/fs/glob').default;

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

@@ -1,25 +1 @@
-/** @typedef { import('@now/build-utils/file-ref') } FileRef */
-/** @typedef { import('@now/build-utils/file-fs-ref') } FileFsRef */
-/** @typedef {{[filePath: string]: FileRef|FileFsRef}} Files */
-
-/**
- * @callback delegate
- * @argument {string} name
- * @returns {string}
- */
-
-/**
- * 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],
-    }),
-    {},
-  );
-};
+module.exports = require('../dist/fs/rename').default;

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

@@ -1,96 +1 @@
-const assert = require('assert');
-const fs = require('fs-extra');
-const path = require('path');
-const { spawn } = require('child_process');
-
-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 ${code || signal}`))
-      : resolve()));
-  });
-}
-
-async function runShellScript(fsPath) {
-  assert(path.isAbsolute(fsPath));
-  const destPath = path.dirname(fsPath);
-  await spawnAsync(`./${path.basename(fsPath)}`, [], destPath);
-  return true;
-}
-
-async function scanParentDirs(destPath, scriptName) {
-  assert(path.isAbsolute(destPath));
-
-  let hasScript = false;
-  let hasPackageLockJson = false;
-  let currentDestPath = destPath;
-
-  // eslint-disable-next-line no-constant-condition
-  while (true) {
-    const packageJsonPath = path.join(currentDestPath, 'package.json');
-    // eslint-disable-next-line no-await-in-loop
-    if (await fs.exists(packageJsonPath)) {
-      // eslint-disable-next-line no-await-in-loop
-      const packageJson = JSON.parse(await fs.readFile(packageJsonPath));
-      hasScript = Boolean(
-        packageJson.scripts && scriptName && packageJson.scripts[scriptName],
-      );
-      // eslint-disable-next-line no-await-in-loop
-      hasPackageLockJson = await fs.exists(
-        path.join(currentDestPath, 'package-lock.json'),
-      );
-      break;
-    }
-
-    const newDestPath = path.dirname(currentDestPath);
-    if (currentDestPath === newDestPath) break;
-    currentDestPath = newDestPath;
-  }
-
-  return { hasScript, hasPackageLockJson };
-}
-
-async function installDependencies(destPath, args = []) {
-  assert(path.isAbsolute(destPath));
-
-  let commandArgs = args;
-  console.log(`installing to ${destPath}`);
-  const { hasPackageLockJson } = await scanParentDirs(destPath);
-
-  if (hasPackageLockJson) {
-    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(commandArgs), destPath);
-    await spawnAsync('yarn', ['cache', 'clean'], destPath);
-  }
-}
-
-async function runPackageJsonScript(destPath, scriptName) {
-  assert(path.isAbsolute(destPath));
-  const { hasScript, hasPackageLockJson } = await scanParentDirs(
-    destPath,
-    scriptName,
-  );
-  if (!hasScript) return false;
-
-  if (hasPackageLockJson) {
-    console.log(`running "npm run ${scriptName}"`);
-    await spawnAsync('npm', ['run', scriptName], destPath);
-  } else {
-    console.log(`running "yarn run ${scriptName}"`);
-    await spawnAsync('yarn', ['--cwd', destPath, 'run', scriptName], destPath);
-  }
-
-  return true;
-}
-
-module.exports = {
-  runShellScript,
-  installDependencies,
-  runNpmInstall: installDependencies,
-  runPackageJsonScript,
-};
+module.exports = require('../dist/fs/run-user-scripts');

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

@@ -1,4 +1 @@
-const fastStreamToBuffer = require('fast-stream-to-buffer');
-const { promisify } = require('util');
-
-module.exports = promisify(fastStreamToBuffer);
+module.exports = require('../dist/fs/stream-to-buffer').default;

packages/now-build-utils/lambda.js

@@ -1,60 +1 @@
-const assert = require('assert');
-const Sema = require('async-sema');
-const { ZipFile } = require('yazl');
-const streamToBuffer = require('./fs/stream-to-buffer.js');
-
-class Lambda {
-  constructor({
-    zipBuffer, handler, runtime, environment,
-  }) {
-    this.type = 'Lambda';
-    this.zipBuffer = zipBuffer;
-    this.handler = handler;
-    this.runtime = runtime;
-    this.environment = environment;
-  }
-}
-
-const sema = new Sema(10);
-const mtime = new Date(1540000000000);
-
-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');
-
-  await sema.acquire();
-  try {
-    const zipFile = new ZipFile();
-    const zipBuffer = await new Promise((resolve, reject) => {
-      Object.keys(files)
-        .sort()
-        .forEach((name) => {
-          const file = files[name];
-          const stream = file.toStream();
-          stream.on('error', reject);
-          zipFile.addReadStream(stream, name, { mode: file.mode, mtime });
-        });
-
-      zipFile.end();
-      streamToBuffer(zipFile.outputStream).then(resolve).catch(reject);
-    });
-
-    return new Lambda({
-      zipBuffer,
-      handler,
-      runtime,
-      environment,
-    });
-  } finally {
-    sema.release();
-  }
-}
-
-module.exports = {
-  Lambda,
-  createLambda,
-};
+module.exports = require('./dist/index');

packages/now-build-utils/package.json

@@ -1,7 +1,9 @@
 {
   "name": "@now/build-utils",
-  "version": "0.4.35-canary.1",
+  "version": "0.4.38-canary.0",
   "license": "MIT",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now-builders.git",
@@ -10,16 +12,26 @@
   "dependencies": {
     "async-retry": "1.2.3",
     "async-sema": "2.1.4",
-    "fast-stream-to-buffer": "1.0.0",
+    "end-of-stream": "^1.4.1",
     "fs-extra": "7.0.0",
     "glob": "7.1.3",
-    "into-stream": "4.0.0",
+    "into-stream": "5.0.0",
     "memory-fs": "0.4.1",
     "multistream": "2.1.1",
     "node-fetch": "2.2.0",
     "yazl": "2.4.3"
   },
   "scripts": {
-    "test": "jest"
+    "build": "tsc",
+    "test": "tsc && jest",
+    "prepublish": "tsc"
+  },
+  "devDependencies": {
+    "@types/async-retry": "^1.2.1",
+    "@types/end-of-stream": "^1.4.0",
+    "@types/fs-extra": "^5.0.5",
+    "@types/node-fetch": "^2.1.6",
+    "@types/yazl": "^2.4.1",
+    "typescript": "3.3.4000"
   }
 }

packages/now-build-utils/src/download.ts

@@ -0,0 +1,27 @@
+import path from 'path';
+import FileFsRef from './file-fs-ref';
+import { File, Files } from './types';
+
+export interface DownloadedFiles {
+  [filePath: string]: FileFsRef
+}
+
+async function downloadFile(file: File, fsPath: string): Promise<FileFsRef> {
+  const { mode } = file;
+  const stream = file.toStream();
+  return FileFsRef.fromStream({ mode, stream, fsPath });
+}
+
+export default async function download(files: Files, basePath: string): Promise<DownloadedFiles> {
+  const files2: DownloadedFiles = {};
+
+  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/src/file-blob.ts

@@ -0,0 +1,46 @@
+import assert from 'assert';
+import intoStream from 'into-stream';
+import { File } from './types';
+
+interface FileBlobOptions {
+  mode?: number;
+  data: string | Buffer;
+}
+
+interface FromStreamOptions {
+  mode?: number;
+  stream: NodeJS.ReadableStream;
+}
+
+export default class FileBlob implements File {
+  public type: string;
+  public mode: number;
+  public data: string | Buffer;
+
+  constructor({ mode = 0o100644, data }: FileBlobOptions) {
+    assert(typeof mode === 'number');
+    assert(typeof data === 'string' || Buffer.isBuffer(data));
+    this.type = 'FileBlob';
+    this.mode = mode;
+    this.data = data;
+  }
+
+  static async fromStream({ mode = 0o100644, stream }: FromStreamOptions) {
+    assert(typeof mode === 'number');
+    assert(typeof stream.pipe === 'function'); // is-stream
+    const chunks: Buffer[] = [];
+
+    await new Promise<void>((resolve, reject) => {
+      stream.on('data', chunk => chunks.push(Buffer.from(chunk)));
+      stream.on('error', error => reject(error));
+      stream.on('end', () => resolve());
+    });
+
+    const data = Buffer.concat(chunks);
+    return new FileBlob({ mode, data });
+  }
+
+  toStream(): NodeJS.ReadableStream {
+    return intoStream(this.data);
+  }
+}

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

@@ -0,0 +1,89 @@
+import assert from 'assert';
+import fs from 'fs-extra';
+import multiStream from 'multistream';
+import path from 'path';
+import Sema from 'async-sema';
+import { File } from './types';
+
+const semaToPreventEMFILE = new Sema(30);
+
+interface FileFsRefOptions {
+  mode?: number;
+  fsPath: string;
+}
+
+interface FromOptions {
+  fsPath: string;
+}
+
+interface FromStreamOptions {
+  mode: number;
+  stream: NodeJS.ReadableStream;
+  fsPath: string;
+}
+
+class FileFsRef implements File {
+  public type: string;
+  public mode: number;
+  public fsPath: string;
+
+  constructor({ mode = 0o100644, fsPath }: FileFsRefOptions) {
+    assert(typeof mode === 'number');
+    assert(typeof fsPath === 'string');
+    this.type = 'FileFsRef';
+    this.mode = mode;
+    this.fsPath = fsPath;
+  }
+
+  static async fromFsPath({ fsPath }: FromOptions): Promise<FileFsRef> {
+    const { mode } = await fs.lstat(fsPath);
+    return new FileFsRef({ mode, fsPath });
+  }
+
+  static async fromStream({ mode = 0o100644, stream, fsPath }: FromStreamOptions): Promise<FileFsRef> {
+    assert(typeof mode === 'number');
+    assert(typeof stream.pipe === 'function'); // is-stream
+    assert(typeof fsPath === 'string');
+    await fs.mkdirp(path.dirname(fsPath));
+
+    await new Promise<void>((resolve, reject) => {
+      const dest = fs.createWriteStream(fsPath);
+      stream.pipe(dest);
+      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(): Promise<NodeJS.ReadableStream> {
+    await semaToPreventEMFILE.acquire();
+    const release = () => semaToPreventEMFILE.release();
+    const stream = fs.createReadStream(this.fsPath);
+    stream.on('close', release);
+    stream.on('error', release);
+    return stream;
+  }
+
+  toStream(): NodeJS.ReadableStream {
+    let flag = false;
+
+    // eslint-disable-next-line consistent-return
+    return multiStream((cb) => {
+      if (flag) return cb(null, null);
+      flag = true;
+
+      this.toStreamAsync()
+        .then((stream) => {
+          cb(null, stream);
+        })
+        .catch((error) => {
+          cb(error, null);
+        });
+    });
+  }
+}
+
+export = FileFsRef;

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

@@ -0,0 +1,88 @@
+import assert from 'assert';
+import fetch from 'node-fetch';
+import multiStream from 'multistream';
+import retry from 'async-retry';
+import Sema from 'async-sema';
+import { File } from './types';
+
+interface FileRefOptions {
+  mode?: number;
+  digest: string;
+}
+
+const semaToDownloadFromS3 = new Sema(10);
+
+class BailableError extends Error {
+  public bail: boolean;
+
+  constructor(...args: string[]) {
+    super(...args);
+    this.bail = false;
+  }
+}
+
+export default class FileRef implements File {
+  public type: string;
+  public mode: number;
+  public digest: string;
+
+  constructor({ mode = 0o100644, digest }: FileRefOptions) {
+    assert(typeof mode === 'number');
+    assert(typeof digest === 'string');
+    this.type = 'FileRef';
+    this.mode = mode;
+    this.digest = digest;
+  }
+
+  async toStreamAsync(): Promise<NodeJS.ReadableStream> {
+    let url = '';
+    // sha:24be087eef9fac01d61b30a725c1a10d7b45a256
+    const digestParts = this.digest.split(':');
+    if (digestParts[0] === 'sha') {
+      // url = `https://s3.amazonaws.com/now-files/${digestParts[1]}`;
+      url = `https://dmmcy0pwk6bqi.cloudfront.net/${digestParts[1]}`;
+    } else {
+      throw new Error('Expected digest to be sha');
+    }
+
+    await semaToDownloadFromS3.acquire();
+    // console.time(`downloading ${url}`);
+    try {
+      return await retry(
+        async () => {
+          const resp = await fetch(url);
+          if (!resp.ok) {
+            const error = new BailableError(
+              `download: ${resp.status} ${resp.statusText} for ${url}`,
+            );
+            if (resp.status === 403) error.bail = true;
+            throw error;
+          }
+          return resp.body;
+        },
+        { factor: 1, retries: 3 },
+      );
+    } finally {
+      // console.timeEnd(`downloading ${url}`);
+      semaToDownloadFromS3.release();
+    }
+  }
+
+  toStream(): NodeJS.ReadableStream {
+    let flag = false;
+
+    // eslint-disable-next-line consistent-return
+    return multiStream((cb) => {
+      if (flag) return cb(null, null);
+      flag = true;
+
+      this.toStreamAsync()
+        .then((stream) => {
+          cb(null, stream);
+        })
+        .catch((error) => {
+          cb(error, null);
+        });
+    });
+  }
+}

packages/now-build-utils/src/fs/download.ts

@@ -0,0 +1,27 @@
+import path from 'path';
+import FileFsRef from '../file-fs-ref';
+import { File, Files } from '../types';
+
+export interface DownloadedFiles {
+  [filePath: string]: FileFsRef
+}
+
+async function downloadFile(file: File, fsPath: string): Promise<FileFsRef> {
+  const { mode } = file;
+  const stream = file.toStream();
+  return FileFsRef.fromStream({ mode, stream, fsPath });
+}
+
+export default async function download(files: Files, basePath: string): Promise<DownloadedFiles> {
+  const files2: DownloadedFiles = {};
+
+  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/src/fs/get-writable-directory.ts

@@ -0,0 +1,10 @@
+import { join } from 'path';
+import { tmpdir } from 'os';
+import { mkdirp } from 'fs-extra';
+
+export default async function getWritableDirectory() {
+  const name = Math.floor(Math.random() * 0x7fffffff).toString(16);
+  const directory = join(tmpdir(), name);
+  await mkdirp(directory);
+  return directory;
+}

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

@@ -0,0 +1,61 @@
+import assert from 'assert';
+import path from 'path';
+import vanillaGlob from 'glob';
+import FileFsRef from '../file-fs-ref';
+
+type GlobOptions = import('glob').IOptions;
+ 
+interface FsFiles {
+  [filePath: string]: FileFsRef
+}
+
+export default function glob(pattern: string, opts: GlobOptions | string, mountpoint?: string): Promise<FsFiles> {
+  return new Promise<FsFiles>((resolve, reject) => {
+    let options: GlobOptions;
+    if (typeof opts === 'string') {
+      options = { cwd: opts };
+    } else {
+      options = opts;
+    }
+
+    if (!options.cwd) {
+      throw new Error(
+        'Second argument (basePath) must be specified for names of resulting files',
+      );
+    }
+
+    if (!path.isAbsolute(options.cwd)) {
+      throw new Error(`basePath/cwd must be an absolute path (${options.cwd})`);
+    }
+
+    options.statCache = {};
+    options.stat = true;
+    options.dot = true;
+
+    // eslint-disable-next-line consistent-return
+    vanillaGlob(pattern, options, (error, files) => {
+      if (error) return reject(error);
+
+      resolve(
+        files.reduce<FsFiles>((files2, relativePath) => {
+          const fsPath = path.join(options.cwd!, relativePath);
+          const stat = options.statCache![fsPath] as import('fs').Stats;
+          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;
+        }, {}),
+      );
+    });
+  });
+};

packages/now-build-utils/src/fs/rename.ts

@@ -0,0 +1,12 @@
+import { Files } from '../types';
+type Delegate = (name: string) => string;
+
+export default function rename(files: Files, delegate: Delegate): Files {
+  return Object.keys(files).reduce(
+    (newFiles, name) => ({
+      ...newFiles,
+      [delegate(name)]: files[name],
+    }),
+    {},
+  );
+}

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

@@ -0,0 +1,114 @@
+import assert from 'assert';
+import fs from 'fs-extra';
+import path from 'path';
+import { spawn, SpawnOptions } from 'child_process';
+
+function spawnAsync(command: string, args: string[], cwd: string, opts: SpawnOptions = {}) {
+  return new Promise<void>((resolve, reject) => {
+    const child = spawn(command, args, { stdio: 'inherit', cwd, ...opts });
+    child.on('error', reject);
+    child.on('close', (code, signal) => (code !== 0
+      ? reject(new Error(`Exited with ${code || signal}`))
+      : resolve()));
+  });
+}
+
+async function chmodPlusX(fsPath: string) {
+  const s = await fs.stat(fsPath);
+  const newMode = s.mode | 64 | 8 | 1; // eslint-disable-line no-bitwise
+  if (s.mode === newMode) return;
+  const base8 = newMode.toString(8).slice(-3);
+  await fs.chmod(fsPath, base8);
+}
+
+export async function runShellScript(fsPath: string) {
+  assert(path.isAbsolute(fsPath));
+  const destPath = path.dirname(fsPath);
+  await chmodPlusX(fsPath);
+  await spawnAsync(`./${path.basename(fsPath)}`, [], destPath);
+  return true;
+}
+
+async function scanParentDirs(destPath: string, scriptName?: string) {
+  assert(path.isAbsolute(destPath));
+
+  let hasScript = false;
+  let hasPackageLockJson = false;
+  let currentDestPath = destPath;
+
+  // eslint-disable-next-line no-constant-condition
+  while (true) {
+    const packageJsonPath = path.join(currentDestPath, 'package.json');
+    // eslint-disable-next-line no-await-in-loop
+    if (await fs.pathExists(packageJsonPath)) {
+      // eslint-disable-next-line no-await-in-loop
+      const packageJson = JSON.parse(await fs.readFile(packageJsonPath, 'utf8'));
+      hasScript = Boolean(
+        packageJson.scripts && scriptName && packageJson.scripts[scriptName],
+      );
+      // eslint-disable-next-line no-await-in-loop
+      hasPackageLockJson = await fs.pathExists(
+        path.join(currentDestPath, 'package-lock.json'),
+      );
+      break;
+    }
+
+    const newDestPath = path.dirname(currentDestPath);
+    if (currentDestPath === newDestPath) break;
+    currentDestPath = newDestPath;
+  }
+
+  return { hasScript, hasPackageLockJson };
+}
+
+export async function installDependencies(destPath: string, args: string[] = []) {
+  assert(path.isAbsolute(destPath));
+
+  let commandArgs = args;
+  console.log(`installing to ${destPath}`);
+  const { hasPackageLockJson } = await scanParentDirs(destPath);
+
+  const opts = {
+    env: {
+      ...process.env,
+      // This is a little hack to force `node-gyp` to build for the
+      // Node.js version that `@now/node` and `@now/node-server` use
+      npm_config_target: '8.10.0',
+    },
+  };
+
+  if (hasPackageLockJson) {
+    commandArgs = args.filter(a => a !== '--prefer-offline');
+    await spawnAsync('npm', ['install'].concat(commandArgs), destPath, opts);
+    await spawnAsync('npm', ['cache', 'clean', '--force'], destPath, opts);
+  } else {
+    await spawnAsync(
+      'yarn',
+      ['--cwd', destPath].concat(commandArgs),
+      destPath,
+      opts,
+    );
+    await spawnAsync('yarn', ['cache', 'clean'], destPath, opts);
+  }
+}
+
+export async function runPackageJsonScript(destPath: string, scriptName: string) {
+  assert(path.isAbsolute(destPath));
+  const { hasScript, hasPackageLockJson } = await scanParentDirs(
+    destPath,
+    scriptName,
+  );
+  if (!hasScript) return false;
+
+  if (hasPackageLockJson) {
+    console.log(`running "npm run ${scriptName}"`);
+    await spawnAsync('npm', ['run', scriptName], destPath);
+  } else {
+    console.log(`running "yarn run ${scriptName}"`);
+    await spawnAsync('yarn', ['--cwd', destPath, 'run', scriptName], destPath);
+  }
+
+  return true;
+}
+
+export const runNpmInstall = installDependencies;

packages/now-build-utils/src/fs/stream-to-buffer.ts

@@ -0,0 +1,26 @@
+import eos from 'end-of-stream';
+
+export default function streamToBuffer(stream: NodeJS.ReadableStream): Promise<Buffer> {
+  return new Promise<Buffer>((resolve, reject) => {
+    const buffers: Buffer[] = [];
+
+    stream.on('data', buffers.push.bind(buffers))
+
+    eos(stream, (err) => {
+        if (err) {
+          reject(err);
+          return;
+        }
+        switch (buffers.length) {
+          case 0:
+            resolve(Buffer.allocUnsafe(0));
+            break;
+          case 1:
+            resolve(buffers[0]);
+            break;
+          default:
+            resolve(Buffer.concat(buffers));
+        }
+    });
+  });
+}

packages/now-build-utils/src/index.ts

@@ -0,0 +1,31 @@
+import FileBlob from './file-blob';
+import FileFsRef from './file-fs-ref';
+import FileRef from './file-ref';
+import { File, Files, AnalyzeOptions, BuildOptions, PrepareCacheOptions } from './types';
+import { Lambda, createLambda } from './lambda';
+import download from './fs/download';
+import getWriteableDirectory from './fs/get-writable-directory'
+import glob from './fs/glob';
+import rename from './fs/rename';
+import { installDependencies, runPackageJsonScript, runNpmInstall, runShellScript } from './fs/run-user-scripts';
+import streamToBuffer from './fs/stream-to-buffer';
+
+export {
+    FileBlob,
+    FileFsRef,
+    FileRef,
+    Files,
+    File,
+    Lambda,
+    createLambda,
+    download,
+    getWriteableDirectory,
+    glob,
+    rename,
+    installDependencies, runPackageJsonScript, runNpmInstall, runShellScript,
+    streamToBuffer,
+    AnalyzeOptions,
+    BuildOptions,
+    PrepareCacheOptions,
+};
+

packages/now-build-utils/src/lambda.ts

@@ -0,0 +1,80 @@
+import assert from 'assert';
+import Sema from 'async-sema';
+import { ZipFile } from 'yazl';
+import streamToBuffer from './fs/stream-to-buffer';
+import { Files } from './types';
+
+interface Environment {
+  [key: string]: string;
+}
+
+interface LambdaOptions {
+  zipBuffer: Buffer;
+  handler: string;
+  runtime: string;
+  environment: Environment;
+}
+
+interface CreateLambdaOptions {
+  files: Files;
+  handler: string;
+  runtime: string;
+  environment?: Environment;
+}
+
+export class Lambda {
+  public type: string;
+  public zipBuffer: Buffer;
+  public handler: string;
+  public runtime: string;
+  public environment: Environment;
+
+  constructor({
+    zipBuffer, handler, runtime, environment,
+  }: LambdaOptions) {
+    this.type = 'Lambda';
+    this.zipBuffer = zipBuffer;
+    this.handler = handler;
+    this.runtime = runtime;
+    this.environment = environment;
+  }
+}
+
+const sema = new Sema(10);
+const mtime = new Date(1540000000000);
+
+export async function createLambda({
+  files, handler, runtime, environment = {},
+}: CreateLambdaOptions): Promise<Lambda> {
+  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');
+
+  await sema.acquire();
+  try {
+    const zipFile = new ZipFile();
+    const zipBuffer = await new Promise<Buffer>((resolve, reject) => {
+      Object.keys(files)
+        .sort()
+        .forEach((name) => {
+          const file = files[name];
+          const stream = file.toStream() as import('stream').Readable;
+          stream.on('error', reject);
+          zipFile.addReadStream(stream, name, { mode: file.mode, mtime });
+        });
+
+      zipFile.end();
+      streamToBuffer(zipFile.outputStream).then(resolve).catch(reject);
+    });
+
+    return new Lambda({
+      zipBuffer,
+      handler,
+      runtime,
+      environment,
+    });
+  } finally {
+    sema.release();
+  }
+}

packages/now-build-utils/src/types.ts

@@ -0,0 +1,101 @@
+export interface File {
+  type: string;
+  mode: number;
+  toStream: () => NodeJS.ReadableStream;
+}
+
+export interface Files {
+  [filePath: string]: File
+}
+
+export interface Config {
+  [key: string]: string
+}
+
+export interface AnalyzeOptions {
+  /**
+   * All source files of the project
+   */
+  files: Files;
+
+  /**
+   * Name of entrypoint file for this particular build job. Value
+   * `files[entrypoint]` is guaranteed to exist and be a valid File reference.
+   * `entrypoint` is always a discrete file and never a glob, since globs are
+   * expanded into separate builds at deployment time.
+   */
+  entrypoint: string;
+
+  /**
+   * A writable temporary directory where you are encouraged to perform your
+   * build process. This directory will be populated with the restored cache.
+   */
+  workPath: string;
+
+  /**
+   * An arbitrary object passed by the user in the build definition defined
+   * in `now.json`.
+   */
+  config: Config;
+}
+
+
+export interface BuildOptions {
+  /**
+   * All source files of the project
+   */
+  files: Files;
+
+  /**
+   * Name of entrypoint file for this particular build job. Value
+   * `files[entrypoint]` is guaranteed to exist and be a valid File reference.
+   * `entrypoint` is always a discrete file and never a glob, since globs are
+   * expanded into separate builds at deployment time.
+   */
+  entrypoint: string;
+
+  /**
+   * A writable temporary directory where you are encouraged to perform your
+   * build process. This directory will be populated with the restored cache.
+   */
+  workPath: string;
+
+  /**
+   * An arbitrary object passed by the user in the build definition defined
+   * in `now.json`.
+   */
+  config: Config;
+}
+
+export interface PrepareCacheOptions {
+  /**
+   * All source files of the project
+   */
+  files: Files;
+
+  /**
+   * Name of entrypoint file for this particular build job. Value
+   * `files[entrypoint]` is guaranteed to exist and be a valid File reference.
+   * `entrypoint` is always a discrete file and never a glob, since globs are
+   * expanded into separate builds at deployment time.
+   */
+  entrypoint: string;
+
+  /**
+   * A writable temporary directory where you are encouraged to perform your
+   * build process.
+   */
+  workPath: string;
+
+  /**
+   * A writable temporary directory where you can build a cache to use for
+   * the next run.
+   */
+  cachePath: string;
+
+  /**
+   * An arbitrary object passed by the user in the build definition defined
+   * in `now.json`.
+   */
+  config: Config;
+}

packages/now-build-utils/tsconfig.json

@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "declaration": true,
+    "esModuleInterop": true,
+    "lib": ["esnext"],
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noEmitOnError": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitReturns": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "outDir": "./dist",
+    "types": ["node"],
+    "strict": true,
+    "target": "esnext"
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

packages/now-go/.gitignore

@@ -1,4 +1,5 @@
 node_modules
 *.log
-launcher
-bin
+/?.js
+/go
+/get-exported-function-name

packages/now-go/build.sh

@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-
-mkdir -p bin
-cd util
-GOOS=linux GOARCH=amd64 go build get-exported-function-name.go
-mv get-exported-function-name ../bin/
-

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

@@ -1,23 +0,0 @@
-const path = require('path');
-
-const fetch = require('node-fetch');
-const tar = require('tar');
-const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js'); // eslint-disable-line import/no-extraneous-dependencies
-
-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();
-
-  if (!res.ok) {
-    throw new Error(`Failed to download: ${url}`);
-  }
-
-  return new Promise((resolve, reject) => {
-    res.body
-      .on('error', reject)
-      .pipe(tar.extract({ cwd: dir, strip: 1 }))
-      .on('finish', () => resolve(path.join(dir, 'bin', 'go')));
-  });
-};

packages/now-go/go-helpers.js

@@ -0,0 +1,129 @@
+const tar = require('tar');
+const execa = require('execa');
+const fetch = require('node-fetch');
+const { mkdirp } = require('fs-extra');
+const { dirname, join } = require('path');
+const debug = require('debug')('@now/go:go-helpers');
+
+const archMap = new Map([['x64', 'amd64'], ['x86', '386']]);
+const platformMap = new Map([['win32', 'windows']]);
+
+// Location where the `go` binary will be installed after `postinstall`
+const GO_DIR = join(__dirname, 'go');
+const GO_BIN = join(GO_DIR, 'bin/go');
+
+const getPlatform = p => platformMap.get(p) || p;
+const getArch = a => archMap.get(a) || a;
+const getGoUrl = (version, platform, arch) => {
+  const goArch = getArch(arch);
+  const goPlatform = getPlatform(platform);
+  const ext = platform === 'win32' ? 'zip' : 'tar.gz';
+  return `https://dl.google.com/go/go${version}.${goPlatform}-${goArch}.${ext}`;
+};
+
+async function getExportedFunctionName(filePath) {
+  debug('Detecting handler name for %o', filePath);
+  const bin = join(__dirname, 'get-exported-function-name');
+  const args = [filePath];
+  const name = await execa.stdout(bin, args);
+  debug('Detected exported name %o', name);
+  return name;
+}
+
+// Creates a `$GOPATH` directory tree, as per `go help gopath` instructions.
+// Without this, `go` won't recognize the `$GOPATH`.
+function createGoPathTree(goPath, platform, arch) {
+  const tuple = `${getPlatform(platform)}_${getArch(arch)}`;
+  debug('Creating GOPATH directory structure for %o (%s)', goPath, tuple);
+  return Promise.all([
+    mkdirp(join(goPath, 'bin')),
+    mkdirp(join(goPath, 'pkg', tuple)),
+  ]);
+}
+
+async function get({ src } = {}) {
+  const args = ['get'];
+  if (src) {
+    debug('Fetching `go` dependencies for file %o', src);
+    args.push(src);
+  } else {
+    debug('Fetching `go` dependencies for cwd %o', this.cwd);
+  }
+  await this(...args);
+}
+
+async function build({ src, dest }) {
+  debug('Building `go` binary %o -> %o', src, dest);
+  let sources;
+  if (Array.isArray(src)) {
+    sources = src;
+  } else {
+    sources = [src];
+  }
+  await this('build', '-o', dest, ...sources);
+}
+
+async function createGo(
+  goPath,
+  platform = process.platform,
+  arch = process.arch,
+  opts = {},
+  goMod = false,
+) {
+  const env = {
+    ...process.env,
+    PATH: `${dirname(GO_BIN)}:${process.env.PATH}`,
+    GOPATH: goPath,
+    ...opts.env,
+  };
+
+  if (goMod) {
+    env.GO111MODULE = 'on';
+  }
+
+  function go(...args) {
+    debug('Exec %o', `go ${args.join(' ')}`);
+    return execa('go', args, { stdio: 'inherit', ...opts, env });
+  }
+  go.cwd = opts.cwd || process.cwd();
+  go.get = get;
+  go.build = build;
+  go.goPath = goPath;
+  await createGoPathTree(goPath, platform, arch);
+  return go;
+}
+
+async function downloadGo(
+  dir = GO_DIR,
+  version = '1.12',
+  platform = process.platform,
+  arch = process.arch,
+) {
+  debug('Installing `go` v%s to %o for %s %s', version, dir, platform, arch);
+
+  const url = getGoUrl(version, platform, arch);
+  debug('Downloading `go` URL: %o', url);
+  const res = await fetch(url);
+
+  if (!res.ok) {
+    throw new Error(`Failed to download: ${url} (${res.status})`);
+  }
+
+  // TODO: use a zip extractor when `ext === "zip"`
+  await mkdirp(dir);
+  await new Promise((resolve, reject) => {
+    res.body
+      .on('error', reject)
+      .pipe(tar.extract({ cwd: dir, strip: 1 }))
+      .on('error', reject)
+      .on('finish', resolve);
+  });
+
+  return createGo(dir, platform, arch);
+}
+
+module.exports = {
+  createGo,
+  downloadGo,
+  getExportedFunctionName,
+};

packages/now-go/index.js

@@ -1,126 +1,188 @@
-const path = require('path');
-const { mkdirp, readFile, writeFile } = require('fs-extra');
+const { join, dirname } = require('path');
+const {
+  readFile, writeFile, pathExists, move,
+} = require('fs-extra');
 
-const execa = require('execa');
+const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line import/no-extraneous-dependencies
+const download = require('@now/build-utils/fs/download.js'); // eslint-disable-line import/no-extraneous-dependencies
 const { createLambda } = require('@now/build-utils/lambda.js'); // eslint-disable-line import/no-extraneous-dependencies
 const getWritableDirectory = require('@now/build-utils/fs/get-writable-directory.js'); // eslint-disable-line import/no-extraneous-dependencies
-const download = require('@now/build-utils/fs/download.js'); // eslint-disable-line import/no-extraneous-dependencies
-const downloadGit = require('lambda-git');
-const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line import/no-extraneous-dependencies
-const downloadGoBin = require('./download-go-bin');
+const { createGo, getExportedFunctionName } = require('./go-helpers');
 
-// creates a `$GOPATH` directory tree, as per
-// `go help gopath`'s instructions.
-// without this, Go won't recognize the `$GOPATH`
-async function createGoPathTree(goPath) {
-  await mkdirp(path.join(goPath, 'bin'));
-  await mkdirp(path.join(goPath, 'pkg', 'linux_amd64'));
-}
-
-exports.config = {
+const config = {
   maxLambdaSize: '10mb',
 };
 
-exports.build = async ({ files, entrypoint }) => {
-  console.log('downloading files...');
+async function build({ files, entrypoint }) {
+  console.log('Downloading user files...');
 
-  const gitPath = await getWritableDirectory();
-  const goPath = await getWritableDirectory();
-  const srcPath = path.join(goPath, 'src', 'lambda');
-  const outDir = await getWritableDirectory();
-
-  await createGoPathTree(goPath);
+  const [goPath, outDir] = await Promise.all([
+    getWritableDirectory(),
+    getWritableDirectory(),
+  ]);
 
+  const srcPath = join(goPath, 'src', 'lambda');
   const downloadedFiles = await download(files, srcPath);
 
-  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 });
-
-  const goEnv = {
-    ...process.env,
-    GOOS: 'linux',
-    GOARCH: 'amd64',
-    GOPATH: goPath,
-  };
-
-  console.log(`parsing AST for "${entrypoint}"`);
-  let handlerFunctionName = '';
+  console.log(`Parsing AST for "${entrypoint}"`);
+  let parseFunctionName;
   try {
-    handlerFunctionName = await execa.stdout(
-      path.join(__dirname, 'bin', 'get-exported-function-name'),
-      [downloadedFiles[entrypoint].fsPath],
+    parseFunctionName = await getExportedFunctionName(
+      downloadedFiles[entrypoint].fsPath,
     );
   } catch (err) {
-    console.log(`failed to parse AST for "${entrypoint}"`);
+    console.log(`Failed to parse AST for "${entrypoint}"`);
     throw err;
   }
 
-  if (handlerFunctionName === '') {
-    const e = new Error(
-      `Could not find an exported function on "${entrypoint}"`,
+  if (!parseFunctionName) {
+    const err = new Error(
+      `Could not find an exported function in "${entrypoint}"`,
     );
-    console.log(e.message);
-    throw e;
+    console.log(err.message);
+    throw err;
   }
 
-  console.log(
-    `Found exported function "${handlerFunctionName}" on "${entrypoint}"`,
-  );
+  const handlerFunctionName = parseFunctionName.split(',')[0];
 
-  const origianlMainGoContents = await readFile(
-    path.join(__dirname, 'main.go'),
-    'utf8',
+  console.log(
+    `Found exported function "${handlerFunctionName}" in "${entrypoint}"`,
   );
-  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';
 
   // we need `main.go` in the same dir as the entrypoint,
   // otherwise `go build` will refuse to build
-  const entrypointDirname = path.dirname(downloadedFiles[entrypoint].fsPath);
+  const entrypointDirname = 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);
-
-  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;
-  }
-
-  console.log('running go build...');
-  try {
-    await execa(
-      goBin,
-      [
-        'build',
-        '-o',
-        path.join(outDir, 'handler'),
-        path.join(entrypointDirname, mainGoFileName),
-        downloadedFiles[entrypoint].fsPath,
-      ],
-      { env: goEnv, cwd: entrypointDirname, stdio: 'inherit' },
+  // check if package name other than main
+  const packageName = parseFunctionName.split(',')[1];
+  const isGoModExist = await pathExists(`${entrypointDirname}/go.mod`);
+  if (packageName !== 'main') {
+    const go = await createGo(
+      goPath,
+      process.platform,
+      process.arch,
+      {
+        cwd: entrypointDirname,
+      },
+      true,
     );
-  } catch (err) {
-    console.log('failed to `go build`');
-    throw err;
+    if (!isGoModExist) {
+      try {
+        const defaultGoModContent = `module ${packageName}`;
+
+        await writeFile(join(entrypointDirname, 'go.mod'), defaultGoModContent);
+      } catch (err) {
+        console.log(`failed to create default go.mod for ${packageName}`);
+        throw err;
+      }
+    }
+
+    const mainModGoFileName = 'main__mod__.go';
+    const modMainGoContents = await readFile(
+      join(__dirname, mainModGoFileName),
+      'utf8',
+    );
+
+    let goPackageName = `${packageName}/${packageName}`;
+    const goFuncName = `${packageName}.${handlerFunctionName}`;
+
+    if (isGoModExist) {
+      const goModContents = await readFile(
+        `${entrypointDirname}/go.mod`,
+        'utf8',
+      );
+      goPackageName = `${
+        goModContents.split('\n')[0].split(' ')[1]
+      }/${packageName}`;
+    }
+
+    const mainModGoContents = modMainGoContents
+      .replace('__NOW_HANDLER_PACKAGE_NAME', goPackageName)
+      .replace('__NOW_HANDLER_FUNC_NAME', goFuncName);
+
+    // write main__mod__.go
+    await writeFile(
+      join(entrypointDirname, mainModGoFileName),
+      mainModGoContents,
+    );
+
+    // move user go file to folder
+    try {
+      await move(
+        downloadedFiles[entrypoint].fsPath,
+        `${join(entrypointDirname, packageName, entrypoint)}`,
+      );
+    } catch (err) {
+      console.log('failed to move entry to package folder');
+      throw err;
+    }
+
+    console.log('tidy go.mod file');
+    try {
+      // ensure go.mod up-to-date
+      await go('mod', 'tidy');
+    } catch (err) {
+      console.log('failed to `go mod tidy`');
+      throw err;
+    }
+
+    console.log('Running `go build`...');
+    const destPath = join(outDir, 'handler');
+    try {
+      const src = [join(entrypointDirname, mainModGoFileName)];
+      await go.build({ src, dest: destPath });
+    } catch (err) {
+      console.log('failed to `go build`');
+      throw err;
+    }
+  } else {
+    const go = await createGo(
+      goPath,
+      process.platform,
+      process.arch,
+      {
+        cwd: entrypointDirname,
+      },
+      false,
+    );
+    const origianlMainGoContents = await readFile(
+      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';
+
+    // Go doesn't like to build files in different directories,
+    // so now we place `main.go` together with the user code
+    await writeFile(join(entrypointDirname, mainGoFileName), mainGoContents);
+
+    // `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 go.get();
+    } catch (err) {
+      console.log('failed to `go get`');
+      throw err;
+    }
+
+    console.log('Running `go build`...');
+    const destPath = join(outDir, 'handler');
+    try {
+      const src = [
+        join(entrypointDirname, mainGoFileName),
+        downloadedFiles[entrypoint].fsPath,
+      ];
+      await go.build({ src, dest: destPath });
+    } catch (err) {
+      console.log('failed to `go build`');
+      throw err;
+    }
   }
 
   const lambda = await createLambda({
@@ -133,4 +195,6 @@ exports.build = async ({ files, entrypoint }) => {
   return {
     [entrypoint]: lambda,
   };
-};
+}
+
+module.exports = { config, build };

packages/now-go/main.go

@@ -1,8 +1,8 @@
 package main
 
 import (
-	now "../../utils/go/bridge"
 	"net/http"
+	now "github.com/zeit/now-builders/utils/go/bridge"
 )
 
 func main() {

packages/now-go/main__mod__.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+  "net/http"
+  "__NOW_HANDLER_PACKAGE_NAME"
+
+  now "github.com/zeit/now-builders/utils/go/bridge"
+)
+
+func main() {
+  now.Start(http.HandlerFunc(__NOW_HANDLER_FUNC_NAME))
+}

packages/now-go/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/go",
-  "version": "0.2.13-canary.0",
+  "version": "0.3.1-canary.2",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -8,25 +8,20 @@
     "directory": "packages/now-go"
   },
   "scripts": {
-    "test": "best -I test/*.js",
-    "prepublish": "./build.sh"
+    "postinstall": "node ./util/install"
   },
   "files": [
-    "bin",
-    "download-go-bin.js",
-    "index.js",
-    "main.go"
+    "*.js",
+    "main.go",
+    "main__mod__.go",
+    "util"
   ],
   "dependencies": {
+    "debug": "^4.1.1",
     "execa": "^1.0.0",
     "fs-extra": "^7.0.0",
-    "lambda-git": "^0.1.2",
     "mkdirp-promise": "5.0.1",
     "node-fetch": "^2.2.1",
     "tar": "4.4.6"
-  },
-  "devDependencies": {
-    "@zeit/best": "0.4.3",
-    "rmfr": "2.0.0"
   }
 }

packages/now-go/util/get-exported-function-name.go

@@ -34,7 +34,7 @@ func main() {
 		if fn.Name.IsExported() == true {
 			// we found the first exported function
 			// we're done!
-			fmt.Print(fn.Name.Name)
+			fmt.Print(fn.Name.Name, ",", parsed.Name.Name)
 			os.Exit(0)
 		}
 	}

packages/now-go/util/install.js

@@ -0,0 +1,18 @@
+const { join } = require('path');
+const { downloadGo } = require('../go-helpers');
+
+async function main() {
+  // First download the `go` binary for this platform/arch.
+  const go = await downloadGo();
+
+  // Build the `get-exported-function-name` helper program.
+  // `go get` is not necessary because the program has no external deps.
+  const src = join(__dirname, 'get-exported-function-name.go');
+  const dest = join(__dirname, '../get-exported-function-name');
+  await go.build({ src, dest });
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});

packages/now-html-minifier/index.js

@@ -11,7 +11,6 @@ const defaultOptions = {
   removeRedundantAttributes: true,
   useShortDoctype: true,
   collapseWhitespace: true,
-  collapseInlineTagWhitespace: true,
   collapseBooleanAttributes: true,
   caseSensitive: true,
 };

packages/now-html-minifier/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/html-minifier",
-  "version": "1.0.8-canary.0",
+  "version": "1.0.8-canary.1",
   "license": "MIT",
   "repository": {
     "type": "git",

packages/now-md/index.js

@@ -34,8 +34,6 @@ exports.build = async ({ files, entrypoint, config }) => {
     stream: stream.pipe(unifiedStream(processor)),
   });
 
-  console.log(result.data.toString());
-
   const replacedEntrypoint = entrypoint.replace(/\.[^.]+$/, '.html');
 
   return { [replacedEntrypoint]: result };

packages/now-md/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/md",
-  "version": "0.4.10-canary.1",
+  "version": "0.4.10-canary.2",
   "license": "MIT",
   "repository": {
     "type": "git",

packages/now-next/index.js

@@ -1,14 +1,22 @@
-const { createLambda } = require('@now/build-utils/lambda.js'); // eslint-disable-line import/no-extraneous-dependencies
-const download = require('@now/build-utils/fs/download.js'); // eslint-disable-line import/no-extraneous-dependencies
-const FileFsRef = require('@now/build-utils/file-fs-ref.js'); // eslint-disable-line import/no-extraneous-dependencies
+const { createLambda } = require('@now/build-utils/lambda'); // eslint-disable-line import/no-extraneous-dependencies
+const download = require('@now/build-utils/fs/download'); // eslint-disable-line import/no-extraneous-dependencies
+const FileFsRef = require('@now/build-utils/file-fs-ref'); // eslint-disable-line import/no-extraneous-dependencies
 const FileBlob = require('@now/build-utils/file-blob'); // eslint-disable-line import/no-extraneous-dependencies
 const path = require('path');
-const { readFile, writeFile, unlink } = require('fs.promised');
 const {
   runNpmInstall,
   runPackageJsonScript,
-} = require('@now/build-utils/fs/run-user-scripts.js'); // eslint-disable-line import/no-extraneous-dependencies
-const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line import/no-extraneous-dependencies
+} = require('@now/build-utils/fs/run-user-scripts'); // eslint-disable-line import/no-extraneous-dependencies
+const glob = require('@now/build-utils/fs/glob'); // eslint-disable-line import/no-extraneous-dependencies
+const {
+  readFile,
+  writeFile,
+  unlink: unlinkFile,
+  remove: removePath,
+  mkdirp,
+  rename: renamePath,
+  pathExists,
+} = require('fs-extra');
 const semver = require('semver');
 const nextLegacyVersions = require('./legacy-versions');
 const {
@@ -17,6 +25,7 @@ const {
   includeOnlyEntryDirectory,
   normalizePackageJson,
   onlyStaticDirectory,
+  getNextConfig,
 } = require('./utils');
 
 /** @typedef { import('@now/build-utils/file-ref').Files } Files */
@@ -39,7 +48,7 @@ async function readPackageJson(entryPath) {
   try {
     return JSON.parse(await readFile(packagePath, 'utf8'));
   } catch (err) {
-    console.log('no package.json found in entry');
+    console.log('package.json not found in entry');
     return {};
   }
 }
@@ -68,6 +77,36 @@ async function writeNpmRc(workPath, token) {
   );
 }
 
+function getNextVersion(packageJson) {
+  let nextVersion;
+  if (packageJson.dependencies && packageJson.dependencies.next) {
+    nextVersion = packageJson.dependencies.next;
+  } else if (packageJson.devDependencies && packageJson.devDependencies.next) {
+    nextVersion = packageJson.devDependencies.next;
+  }
+  return nextVersion;
+}
+
+function isLegacyNext(nextVersion) {
+  // If version is using the dist-tag instead of a version range
+  if (nextVersion === 'canary' || nextVersion === 'latest') {
+    return false;
+  }
+
+  // If the version is an exact match with the legacy versions
+  if (nextLegacyVersions.indexOf(nextVersion) !== -1) {
+    return true;
+  }
+
+  const maxSatisfying = semver.maxSatisfying(nextLegacyVersions, nextVersion);
+  // When the version can't be matched with legacy versions, so it must be a newer version
+  if (maxSatisfying === null) {
+    return false;
+  }
+
+  return true;
+}
+
 exports.config = {
   maxLambdaSize: '5mb',
 };
@@ -84,52 +123,34 @@ exports.build = async ({ files, workPath, entrypoint }) => {
   await download(files, workPath);
   const entryPath = path.join(workPath, entryDirectory);
 
-  const pkg = await readPackageJson(entryPath);
-
-  let nextVersion;
-  if (pkg.dependencies && pkg.dependencies.next) {
-    nextVersion = pkg.dependencies.next;
-  } else if (pkg.devDependencies && pkg.devDependencies.next) {
-    nextVersion = pkg.devDependencies.next;
+  if (await pathExists(path.join(entryPath, '.next'))) {
+    console.warn(
+      'WARNING: You should probably not upload the `.next` directory. See https://zeit.co/docs/v2/deployments/official-builders/next-js-now-next/ for more information.',
+    );
   }
 
+  const pkg = await readPackageJson(entryPath);
+
+  const nextVersion = getNextVersion(pkg);
   if (!nextVersion) {
     throw new Error(
       'No Next.js version could be detected in "package.json". Make sure `"next"` is installed in "dependencies" or "devDependencies"',
     );
   }
 
-  const isLegacy = (() => {
-    // If version is using the dist-tag instead of a version range
-    if (nextVersion === 'canary' || nextVersion === 'latest') {
-      return false;
-    }
-
-    // If the version is an exact match with the legacy versions
-    if (nextLegacyVersions.indexOf(nextVersion) !== -1) {
-      return true;
-    }
-
-    const maxSatisfying = semver.maxSatisfying(nextLegacyVersions, nextVersion);
-    // When the version can't be matched with legacy versions, so it must be a newer version
-    if (maxSatisfying === null) {
-      return false;
-    }
-
-    return true;
-  })();
+  const isLegacy = isLegacyNext(nextVersion);
 
   console.log(`MODE: ${isLegacy ? 'legacy' : 'serverless'}`);
 
   if (isLegacy) {
     try {
-      await unlink(path.join(entryPath, 'yarn.lock'));
+      await unlinkFile(path.join(entryPath, 'yarn.lock'));
     } catch (err) {
       console.log('no yarn.lock removed');
     }
 
     try {
-      await unlink(path.join(entryPath, 'package-lock.json'));
+      await unlinkFile(path.join(entryPath, 'package-lock.json'));
     } catch (err) {
       console.log('no package-lock.json removed');
     }
@@ -170,7 +191,7 @@ exports.build = async ({ files, workPath, entrypoint }) => {
   }
 
   if (process.env.NPM_AUTH_TOKEN) {
-    await unlink(path.join(entryPath, '.npmrc'));
+    await unlinkFile(path.join(entryPath, '.npmrc'));
   }
 
   const lambdas = {};
@@ -273,11 +294,31 @@ exports.build = async ({ files, workPath, entrypoint }) => {
     const pageKeys = Object.keys(pages);
 
     if (pageKeys.length === 0) {
+      const nextConfig = await getNextConfig(workPath, entryPath);
+
+      if (nextConfig != null) {
+        console.info('Found next.config.js:');
+        console.info(nextConfig);
+        console.info();
+      }
+
       throw new Error(
         'No serverless pages were built. https://err.sh/zeit/now-builders/now-next-no-serverless-pages-built',
       );
     }
 
+    // An optional assets folder that is placed alongside every page entrypoint
+    const assets = await glob(
+      'assets/**',
+      path.join(entryPath, '.next', 'serverless'),
+    );
+
+    const assetKeys = Object.keys(assets);
+    if (assetKeys.length > 0) {
+      console.log('detected assets to be bundled with lambda:');
+      assetKeys.forEach(assetFile => console.log(`\t${assetFile}`));
+    }
+
     await Promise.all(
       pageKeys.map(async (page) => {
         // These default pages don't have to be handled as they'd always 404
@@ -291,6 +332,7 @@ exports.build = async ({ files, workPath, entrypoint }) => {
         lambdas[path.join(entryDirectory, pathname)] = await createLambda({
           files: {
             ...launcherFiles,
+            ...assets,
             'page.js': pages[page],
           },
           handler: 'now__launcher.launcher',
@@ -313,16 +355,49 @@ exports.build = async ({ files, workPath, entrypoint }) => {
     {},
   );
 
-  const nextStaticDirectory = onlyStaticDirectory(
+  const staticDirectoryFiles = onlyStaticDirectory(
     includeOnlyEntryDirectory(files, entryDirectory),
-  );
-  const staticDirectoryFiles = Object.keys(nextStaticDirectory).reduce(
-    (mappedFiles, file) => ({
-      ...mappedFiles,
-      [path.join(entryDirectory, file)]: nextStaticDirectory[file],
-    }),
-    {},
+    entryDirectory,
   );
 
   return { ...lambdas, ...staticFiles, ...staticDirectoryFiles };
 };
+
+exports.prepareCache = async ({ cachePath, workPath, entrypoint }) => {
+  console.log('preparing cache ...');
+
+  const entryDirectory = path.dirname(entrypoint);
+  const entryPath = path.join(workPath, entryDirectory);
+  const cacheEntryPath = path.join(cachePath, entryDirectory);
+
+  const pkg = await readPackageJson(entryPath);
+  const nextVersion = getNextVersion(pkg);
+  const isLegacy = isLegacyNext(nextVersion);
+
+  if (isLegacy) {
+    // skip caching legacy mode (swapping deps between all and production can get bug-prone)
+    return {};
+  }
+
+  console.log('clearing old cache ...');
+  await removePath(cacheEntryPath);
+  await mkdirp(cacheEntryPath);
+
+  console.log('copying build files for cache ...');
+  await renamePath(entryPath, cacheEntryPath);
+
+  console.log('producing cache file manifest ...');
+
+  const cacheEntrypoint = path.relative(cachePath, cacheEntryPath);
+  return {
+    ...(await glob(
+      path.join(
+        cacheEntrypoint,
+        'node_modules/{**,!.*,.yarn*,.cache/next-minifier/**}',
+      ),
+      cachePath,
+    )),
+    ...(await glob(path.join(cacheEntrypoint, 'package-lock.json'), cachePath)),
+    ...(await glob(path.join(cacheEntrypoint, 'yarn.lock'), cachePath)),
+  };
+};

packages/now-next/launcher.js

@@ -1,13 +1,11 @@
 process.env.NODE_ENV = 'production';
 
 const { Server } = require('http');
-const { Bridge } = require('./now__bridge.js');
-const page = require('./page.js');
-
-const bridge = new Bridge();
-bridge.port = 3000;
+const { Bridge } = require('./now__bridge');
+const page = require('./page');
 
 const server = new Server(page.render);
-server.listen(bridge.port);
+const bridge = new Bridge(server);
+bridge.listen();
 
 exports.launcher = bridge.launcher;

packages/now-next/legacy-launcher.js

@@ -1,10 +1,7 @@
 const { Server } = require('http');
 const next = require('next-server');
 const url = require('url');
-const { Bridge } = require('./now__bridge.js');
-
-const bridge = new Bridge();
-bridge.port = 3000;
+const { Bridge } = require('./now__bridge');
 
 process.env.NODE_ENV = 'production';
 
@@ -14,6 +11,8 @@ 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);
+
+const bridge = new Bridge(server);
+bridge.listen();
 
 exports.launcher = bridge.launcher;

packages/now-next/package.json

@@ -1,16 +1,19 @@
 {
   "name": "@now/next",
-  "version": "0.0.85-canary.4",
+  "version": "0.1.3-canary.2",
   "license": "MIT",
+  "scripts": {
+    "build": "tsc"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now-builders.git",
     "directory": "packages/now-next"
   },
   "dependencies": {
-    "@now/node-bridge": "0.1.4",
+    "@now/node-bridge": "^1.0.0",
     "execa": "^1.0.0",
-    "fs.promised": "^3.0.0",
+    "fs-extra": "^7.0.0",
     "semver": "^5.6.0"
   }
 }

packages/now-next/tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "module": "commonjs",
+    "lib": ["es2017"],
+    "allowJs": true,
+    "checkJs": true,
+    "noEmit": true,
+    "strict": false,
+    "types": ["node"],
+    "esModuleInterop": true
+  },
+  "include": [
+    "./"
+  ],
+  "exclude": [
+    "./launcher.js",
+    "./legacy-launcher.js"
+  ]
+}

packages/now-next/utils.js

@@ -1,3 +1,6 @@
+const fs = require('fs-extra');
+const path = require('path');
+
 /** @typedef { import('@now/build-utils/file-ref') } FileRef */
 /** @typedef { import('@now/build-utils/file-fs-ref') } FileFsRef */
 /** @typedef {{[filePath: string]: FileRef|FileFsRef}} Files */
@@ -79,13 +82,13 @@ function excludeLockFiles(files) {
 }
 
 /**
- * Exclude the static directory from files
+ * Include the static directory from files
  * @param {Files} files
  * @returns {Files}
  */
-function onlyStaticDirectory(files) {
+function onlyStaticDirectory(files, entryDir) {
   function matcher(filePath) {
-    return !filePath.startsWith('static');
+    return !filePath.startsWith(path.join(entryDir, 'static'));
   }
 
   return excludeFiles(files, matcher);
@@ -136,6 +139,20 @@ function normalizePackageJson(defaultPackageJson = {}) {
   };
 }
 
+async function getNextConfig(workPath, entryPath) {
+  const entryConfig = path.join(entryPath, './next.config.js');
+  if (await fs.pathExists(entryConfig)) {
+    return fs.readFile(entryConfig, 'utf8');
+  }
+
+  const workConfig = path.join(workPath, './next.config.js');
+  if (await fs.pathExists(workConfig)) {
+    return fs.readFile(workConfig, 'utf8');
+  }
+
+  return null;
+}
+
 module.exports = {
   excludeFiles,
   validateEntrypoint,
@@ -143,4 +160,5 @@ module.exports = {
   excludeLockFiles,
   normalizePackageJson,
   onlyStaticDirectory,
+  getNextConfig,
 };

packages/now-node-bridge/.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
+      }
+    }
+  ]
+}
+

packages/now-node-bridge/.gitignore

@@ -0,0 +1 @@
+/bridge.*

packages/now-node-bridge/bridge.js

@@ -1,110 +0,0 @@
-const http = require('http');
-
-function normalizeEvent(event) {
-  let isApiGateway = true;
-
-  if (event.Action === 'Invoke') {
-    isApiGateway = false;
-    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 {
-      isApiGateway, method, path, headers, body,
-    };
-  }
-
-  const {
-    httpMethod: method, path, headers, body,
-  } = event;
-
-  return {
-    isApiGateway, method, path, headers, body,
-  };
-}
-
-class Bridge {
-  constructor() {
-    this.launcher = this.launcher.bind(this);
-  }
-
-  launcher(event) {
-    // eslint-disable-next-line consistent-return
-    return new Promise((resolve, reject) => {
-      if (this.userError) {
-        console.error('Error while initializing entrypoint:', this.userError);
-        return resolve({ statusCode: 500, body: '' });
-      }
-
-      if (!this.port) {
-        return resolve({ statusCode: 504, body: '' });
-      }
-
-      const {
-        isApiGateway, method, path, headers, body,
-      } = normalizeEvent(event);
-
-      const opts = {
-        hostname: '127.0.0.1',
-        port: this.port,
-        path,
-        method,
-        headers,
-      };
-
-      const req = http.request(opts, (res) => {
-        const response = res;
-        const respBodyChunks = [];
-        response.on('data', chunk => respBodyChunks.push(Buffer.from(chunk)));
-        response.on('error', reject);
-        response.on('end', () => {
-          const bodyBuffer = Buffer.concat(respBodyChunks);
-          delete response.headers.connection;
-
-          if (isApiGateway) {
-            delete response.headers['content-length'];
-          } else
-          if (response.headers['content-length']) {
-            response.headers['content-length'] = bodyBuffer.length;
-          }
-
-          resolve({
-            statusCode: response.statusCode,
-            headers: response.headers,
-            body: bodyBuffer.toString('base64'),
-            encoding: 'base64',
-          });
-        });
-      });
-
-      req.on('error', (error) => {
-        setTimeout(() => {
-          // this lets express print the true error of why the connection was closed.
-          // it is probably 'Cannot set headers after they are sent to the client'
-          reject(error);
-        }, 2);
-      });
-
-      if (body) req.write(body);
-      req.end();
-    });
-  }
-}
-
-module.exports = {
-  Bridge,
-};

packages/now-node-bridge/package.json

@@ -1,10 +1,26 @@
 {
   "name": "@now/node-bridge",
-  "version": "0.1.11-canary.0",
+  "version": "1.0.1-canary.1",
   "license": "MIT",
+  "main": "./index.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now-builders.git",
     "directory": "packages/now-node-bridge"
+  },
+  "files": [
+    "bridge.*",
+    "index.js"
+  ],
+  "scripts": {
+    "build": "tsc",
+    "test": "npm run build && jest",
+    "prepublish": "npm run build"
+  },
+  "devDependencies": {
+    "@types/aws-lambda": "8.10.19",
+    "@types/node": "11.9.4",
+    "jest": "24.1.0",
+    "typescript": "3.3.3"
   }
 }

packages/now-node-bridge/src/bridge.ts

@@ -0,0 +1,183 @@
+import { AddressInfo } from 'net';
+import { APIGatewayProxyEvent } from 'aws-lambda';
+import {
+  Server,
+  IncomingHttpHeaders,
+  OutgoingHttpHeaders,
+  request
+} from 'http';
+
+interface NowProxyEvent {
+  Action: string;
+  body: string;
+}
+
+export interface NowProxyRequest {
+  isApiGateway?: boolean;
+  method: string;
+  path: string;
+  headers: IncomingHttpHeaders;
+  body: Buffer;
+}
+
+export interface NowProxyResponse {
+  statusCode: number;
+  headers: OutgoingHttpHeaders;
+  body: string;
+  encoding: string;
+}
+
+function normalizeNowProxyEvent(event: NowProxyEvent): NowProxyRequest {
+  let bodyBuffer: Buffer | null;
+  const { method, path, headers, encoding, body } = JSON.parse(event.body);
+
+  if (body) {
+    if (encoding === 'base64') {
+      bodyBuffer = Buffer.from(body, encoding);
+    } else if (encoding === undefined) {
+      bodyBuffer = Buffer.from(body);
+    } else {
+      throw new Error(`Unsupported encoding: ${encoding}`);
+    }
+  } else {
+    bodyBuffer = Buffer.alloc(0);
+  }
+
+  return { isApiGateway: false, method, path, headers, body: bodyBuffer };
+}
+
+function normalizeAPIGatewayProxyEvent(
+  event: APIGatewayProxyEvent
+): NowProxyRequest {
+  let bodyBuffer: Buffer | null;
+  const { httpMethod: method, path, headers, body } = event;
+
+  if (body) {
+    if (event.isBase64Encoded) {
+      bodyBuffer = Buffer.from(body, 'base64');
+    } else {
+      bodyBuffer = Buffer.from(body);
+    }
+  } else {
+    bodyBuffer = Buffer.alloc(0);
+  }
+
+  return { isApiGateway: true, method, path, headers, body: bodyBuffer };
+}
+
+function normalizeEvent(
+  event: NowProxyEvent | APIGatewayProxyEvent
+): NowProxyRequest {
+  if ('Action' in event) {
+    if (event.Action === 'Invoke') {
+      return normalizeNowProxyEvent(event);
+    } else {
+      throw new Error(`Unexpected event.Action: ${event.Action}`);
+    }
+  } else {
+    return normalizeAPIGatewayProxyEvent(event);
+  }
+}
+
+export class Bridge {
+  private server: Server | null;
+  private listening: Promise<AddressInfo>;
+  private resolveListening: (info: AddressInfo) => void;
+
+  constructor(server?: Server) {
+    this.server = null;
+    if (server) {
+      this.setServer(server);
+    }
+    this.launcher = this.launcher.bind(this);
+
+    // This is just to appease TypeScript strict mode, since it doesn't
+    // understand that the Promise constructor is synchronous
+    this.resolveListening = (info: AddressInfo) => {};
+
+    this.listening = new Promise(resolve => {
+      this.resolveListening = resolve;
+    });
+  }
+
+  setServer(server: Server) {
+    this.server = server;
+    server.once('listening', () => {
+      const addr = server.address();
+      if (typeof addr === 'string') {
+        throw new Error(`Unexpected string for \`server.address()\`: ${addr}`);
+      } else if (!addr) {
+        throw new Error('`server.address()` returned `null`');
+      } else {
+        this.resolveListening(addr);
+      }
+    });
+  }
+
+  listen() {
+    if (!this.server) {
+      throw new Error('Server has not been set!');
+    }
+
+    return this.server.listen({
+      host: '127.0.0.1',
+      port: 0
+    });
+  }
+
+  async launcher(
+    event: NowProxyEvent | APIGatewayProxyEvent
+  ): Promise<NowProxyResponse> {
+    const { port } = await this.listening;
+
+    const { isApiGateway, method, path, headers, body } = normalizeEvent(
+      event
+    );
+
+    const opts = {
+      hostname: '127.0.0.1',
+      port,
+      path,
+      method,
+      headers
+    };
+
+    // eslint-disable-next-line consistent-return
+    return new Promise((resolve, reject) => {
+      const req = request(opts, res => {
+        const response = res;
+        const respBodyChunks: Buffer[] = [];
+        response.on('data', chunk => respBodyChunks.push(Buffer.from(chunk)));
+        response.on('error', reject);
+        response.on('end', () => {
+          const bodyBuffer = Buffer.concat(respBodyChunks);
+          delete response.headers.connection;
+
+          if (isApiGateway) {
+            delete response.headers['content-length'];
+          } else if (response.headers['content-length']) {
+            response.headers['content-length'] = String(bodyBuffer.length);
+          }
+
+          resolve({
+            statusCode: response.statusCode || 200,
+            headers: response.headers,
+            body: bodyBuffer.toString('base64'),
+            encoding: 'base64'
+          });
+        });
+      });
+
+      req.on('error', error => {
+        setTimeout(() => {
+          // this lets express print the true error of why the connection was closed.
+          // it is probably 'Cannot set headers after they are sent to the client'
+          reject(error);
+        }, 2);
+      });
+
+      if (body) req.write(body);
+      req.end();
+    });
+  }
+}

packages/now-node-bridge/test/bridge.test.js

@@ -0,0 +1,71 @@
+const assert = require('assert');
+const { Server } = require('http');
+const { Bridge } = require('../bridge');
+
+test('port binding', async () => {
+  const server = new Server();
+  const bridge = new Bridge(server);
+  bridge.listen();
+
+  // Test port binding
+  const info = await bridge.listening;
+  assert.equal(info.address, '127.0.0.1');
+  assert.equal(typeof info.port, 'number');
+
+  server.close();
+});
+
+test('`APIGatewayProxyEvent` normalizing', async () => {
+  const server = new Server((req, res) => res.end(
+    JSON.stringify({
+      method: req.method,
+      path: req.url,
+      headers: req.headers,
+    }),
+  ));
+  const bridge = new Bridge(server);
+  bridge.listen();
+  const result = await bridge.launcher({
+    httpMethod: 'GET',
+    headers: { foo: 'bar' },
+    path: '/apigateway',
+    body: null,
+  });
+  assert.equal(result.encoding, 'base64');
+  assert.equal(result.statusCode, 200);
+  const body = JSON.parse(Buffer.from(result.body, 'base64').toString());
+  assert.equal(body.method, 'GET');
+  assert.equal(body.path, '/apigateway');
+  assert.equal(body.headers.foo, 'bar');
+
+  server.close();
+});
+
+test('`NowProxyEvent` normalizing', async () => {
+  const server = new Server((req, res) => res.end(
+    JSON.stringify({
+      method: req.method,
+      path: req.url,
+      headers: req.headers,
+    }),
+  ));
+  const bridge = new Bridge(server);
+  bridge.listen();
+  const result = await bridge.launcher({
+    Action: 'Invoke',
+    body: JSON.stringify({
+      method: 'POST',
+      headers: { foo: 'baz' },
+      path: '/nowproxy',
+      body: 'body=1',
+    }),
+  });
+  assert.equal(result.encoding, 'base64');
+  assert.equal(result.statusCode, 200);
+  const body = JSON.parse(Buffer.from(result.body, 'base64').toString());
+  assert.equal(body.method, 'POST');
+  assert.equal(body.path, '/nowproxy');
+  assert.equal(body.headers.foo, 'baz');
+
+  server.close();
+});

packages/now-node-bridge/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "lib": ["esnext"],
+    "target": "esnext",
+    "module": "commonjs",
+    "outDir": ".",
+    "strict": true,
+    "sourceMap": true,
+    "declaration": true
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

packages/now-node-server/index.js

@@ -48,7 +48,7 @@ async function downloadInstallAndBundle(
         data: JSON.stringify({
           license: 'UNLICENSED',
           dependencies: {
-            '@zeit/ncc': '0.13.2',
+            '@zeit/ncc': '0.16.1',
           },
         }),
       }),
@@ -61,10 +61,32 @@ async function downloadInstallAndBundle(
   return [downloadedFiles, userPath, nccPath, entrypointFsDirname];
 }
 
-async function compile(workNccPath, downloadedFiles, entrypoint) {
+async function compile(workNccPath, downloadedFiles, entrypoint, config) {
   const input = downloadedFiles[entrypoint].fsPath;
+  const inputDir = path.dirname(input);
   const ncc = require(path.join(workNccPath, 'node_modules/@zeit/ncc'));
-  const { code, assets } = await ncc(input);
+  const { code, assets } = await ncc(input, { sourceMap: true });
+
+  if (config && config.includeFiles) {
+    // eslint-disable-next-line no-restricted-syntax
+    for (const pattern of config.includeFiles) {
+      // eslint-disable-next-line no-await-in-loop
+      const files = await glob(pattern, inputDir);
+
+      // eslint-disable-next-line no-restricted-syntax
+      for (const assetName of Object.keys(files)) {
+        const stream = files[assetName].toStream();
+        const { mode } = files[assetName];
+        // eslint-disable-next-line no-await-in-loop
+        const { data } = await FileBlob.fromStream({ stream });
+
+        assets[assetName] = {
+          source: data,
+          permissions: mode,
+        };
+      }
+    }
+  }
 
   const preparedFiles = {};
   const blob = new FileBlob({ data: code });
@@ -115,7 +137,12 @@ exports.build = async ({
     preparedFiles = rename(preparedFiles, name => path.join('user', name));
   } else {
     console.log('compiling entrypoint with ncc...');
-    preparedFiles = await compile(workNccPath, downloadedFiles, entrypoint);
+    preparedFiles = await compile(
+      workNccPath,
+      downloadedFiles,
+      entrypoint,
+      config,
+    );
   }
 
   const launcherPath = path.join(__dirname, 'launcher.js');

packages/now-node-server/launcher.js

@@ -4,22 +4,28 @@ const { Bridge } = require('./bridge.js');
 const bridge = new Bridge();
 
 const saveListen = Server.prototype.listen;
-Server.prototype.listen = function listen(...args) {
-  this.on('listening', function listening() {
-    bridge.port = this.address().port;
-  });
-  saveListen.apply(this, args);
+Server.prototype.listen = function listen() {
+  bridge.setServer(this);
+  Server.prototype.listen = saveListen;
+  return bridge.listen();
 };
 
-try {
-  if (!process.env.NODE_ENV) {
-    process.env.NODE_ENV = 'production';
-  }
+if (!process.env.NODE_ENV) {
+  process.env.NODE_ENV = 'production';
+}
 
+try {
   // PLACEHOLDER
-} catch (error) {
-  console.error(error);
-  bridge.userError = error;
+} catch (err) {
+  if (err.code === 'MODULE_NOT_FOUND') {
+    console.error(err.message);
+    console.error(
+      'Did you forget to add it to "dependencies" in `package.json`?',
+    );
+    process.exit(1);
+  } else {
+    throw err;
+  }
 }
 
 exports.launcher = bridge.launcher;

packages/now-node-server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/node-server",
-  "version": "0.4.27-canary.3",
+  "version": "0.5.2-canary.3",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -8,7 +8,7 @@
     "directory": "packages/now-node-server"
   },
   "dependencies": {
-    "@now/node-bridge": "^0.1.11-canary.0",
+    "@now/node-bridge": "^1.0.1-canary.1",
     "fs-extra": "7.0.1"
   },
   "scripts": {

packages/now-node-server/test/fixtures/11-include-files/index.js

@@ -0,0 +1,6 @@
+const express = require('express');
+
+const app = express();
+app.use(express.static('templates'));
+
+app.listen();

packages/now-node-server/test/fixtures/11-include-files/now.json

@@ -0,0 +1,20 @@
+{
+  "version": 2,
+  "builds": [
+    {
+      "src": "index.js",
+      "use": "@now/node-server",
+      "config": {
+        "includeFiles": [
+          "templates/**"
+        ]
+      }
+    }
+  ],
+  "probes": [
+    {
+      "path": "/",
+      "mustContain": "Hello Now!"
+    }
+  ]
+}

packages/now-node-server/test/fixtures/11-include-files/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "express": "^4.16.4"
+  }
+}

packages/now-node-server/test/fixtures/11-include-files/templates/index.html

@@ -0,0 +1 @@
+Hello Now!

packages/now-node/.gitignore

@@ -0,0 +1,2 @@
+/dist
+/src/bridge.d.ts

packages/now-node/.npmignore

@@ -1 +0,0 @@
-/test

packages/now-node/build.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+bridge_entrypoint="$(node -p 'require.resolve("@now/node-bridge")')"
+bridge_defs="$(dirname "$bridge_entrypoint")/bridge.d.ts"
+
+if [ ! -e "$bridge_defs" ]; then
+  yarn install
+fi
+
+cp -v "$bridge_defs" src
+tsc

packages/now-node/index.js

@@ -1,146 +0,0 @@
-const { createLambda } = require('@now/build-utils/lambda.js'); // eslint-disable-line import/no-extraneous-dependencies
-const download = require('@now/build-utils/fs/download.js'); // eslint-disable-line import/no-extraneous-dependencies
-const FileBlob = require('@now/build-utils/file-blob.js'); // eslint-disable-line import/no-extraneous-dependencies
-const FileFsRef = require('@now/build-utils/file-fs-ref.js'); // eslint-disable-line import/no-extraneous-dependencies
-const fs = require('fs-extra');
-const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line import/no-extraneous-dependencies
-const path = require('path');
-const {
-  runNpmInstall,
-  runPackageJsonScript,
-} = require('@now/build-utils/fs/run-user-scripts.js'); // eslint-disable-line import/no-extraneous-dependencies
-
-/** @typedef { import('@now/build-utils/file-ref') } FileRef */
-/** @typedef {{[filePath: string]: FileRef}} Files */
-
-/**
- * @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 downloadedFiles = await download(files, userPath);
-
-  console.log("installing dependencies for user's code...");
-  const entrypointFsDirname = path.join(userPath, path.dirname(entrypoint));
-  await runNpmInstall(entrypointFsDirname, npmArguments);
-
-  console.log('writing ncc package.json...');
-  await download(
-    {
-      'package.json': new FileBlob({
-        data: JSON.stringify({
-          license: 'UNLICENSED',
-          dependencies: {
-            '@zeit/ncc': '0.13.2',
-          },
-        }),
-      }),
-    },
-    nccPath,
-  );
-
-  console.log('installing dependencies for ncc...');
-  await runNpmInstall(nccPath, npmArguments);
-  return [downloadedFiles, nccPath, entrypointFsDirname];
-}
-
-async function compile(workNccPath, downloadedFiles, entrypoint) {
-  const input = downloadedFiles[entrypoint].fsPath;
-  const ncc = require(path.join(workNccPath, 'node_modules/@zeit/ncc'));
-  const { code, assets } = await ncc(input);
-
-  const preparedFiles = {};
-  const blob = new FileBlob({ data: code });
-  // move all user code to 'user' subdirectory
-  preparedFiles[path.join('user', entrypoint)] = blob;
-  // eslint-disable-next-line no-restricted-syntax
-  for (const assetName of Object.keys(assets)) {
-    const { source: data, permissions: mode } = assets[assetName];
-    const blob2 = new FileBlob({ data, mode });
-    preparedFiles[
-      path.join('user', path.dirname(entrypoint), assetName)
-    ] = blob2;
-  }
-
-  return preparedFiles;
-}
-
-exports.config = {
-  maxLambdaSize: '5mb',
-};
-
-/**
- * @param {BuildParamsType} buildParams
- * @returns {Promise<Files>}
- */
-exports.build = async ({ files, entrypoint, workPath }) => {
-  const [
-    downloadedFiles,
-    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 ncc...');
-  const preparedFiles = await compile(workNccPath, downloadedFiles, entrypoint);
-  const launcherPath = path.join(__dirname, 'launcher.js');
-  let launcherData = await fs.readFile(launcherPath, 'utf8');
-
-  launcherData = launcherData.replace(
-    '// PLACEHOLDER',
-    [
-      'process.chdir("./user");',
-      `listener = require("./${path.join('user', entrypoint)}");`,
-      'if (listener.default) listener = listener.default;',
-    ].join(' '),
-  );
-
-  const launcherFiles = {
-    'launcher.js': new FileBlob({ data: launcherData }),
-    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') }),
-  };
-
-  const lambda = await createLambda({
-    files: { ...preparedFiles, ...launcherFiles },
-    handler: 'launcher.launcher',
-    runtime: 'nodejs8.10',
-  });
-
-  return { [entrypoint]: lambda };
-};
-
-exports.prepareCache = async ({
-  files, entrypoint, workPath, cachePath,
-}) => {
-  await fs.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('ncc/node_modules/**', cachePath)),
-    ...(await glob('ncc/package-lock.json', cachePath)),
-    ...(await glob('ncc/yarn.lock', cachePath)),
-  };
-};

packages/now-node/launcher.js

@@ -1,22 +0,0 @@
-const { Server } = require('http');
-const { Bridge } = require('./bridge.js');
-
-const bridge = new Bridge();
-bridge.port = 3000;
-let listener;
-
-try {
-  if (!process.env.NODE_ENV) {
-    process.env.NODE_ENV = 'production';
-  }
-
-  // PLACEHOLDER
-} catch (error) {
-  console.error(error);
-  bridge.userError = error;
-}
-
-const server = new Server(listener);
-server.listen(bridge.port);
-
-exports.launcher = bridge.launcher;

packages/now-node/package.json

@@ -1,17 +1,28 @@
 {
   "name": "@now/node",
-  "version": "0.4.29-canary.3",
+  "version": "0.5.2-canary.5",
   "license": "MIT",
+  "main": "./dist/index",
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now-builders.git",
     "directory": "packages/now-node"
   },
   "dependencies": {
-    "@now/node-bridge": "^0.1.11-canary.0",
+    "@now/node-bridge": "^1.0.1-canary.1",
     "fs-extra": "7.0.1"
   },
   "scripts": {
-    "test": "jest"
+    "build": "./build.sh",
+    "test": "npm run build && jest",
+    "prepublish": "npm run build"
+  },
+  "files": [
+    "dist"
+  ],
+  "devDependencies": {
+    "@types/node": "11.9.4",
+    "jest": "24.1.0",
+    "typescript": "3.3.3"
   }
 }

packages/now-node/src/index.ts

@@ -0,0 +1,157 @@
+import { join, dirname } from 'path';
+import { remove, readFile } from 'fs-extra';
+import {
+  glob,
+  download,
+  FileBlob,
+  FileFsRef,
+  Files,
+  createLambda,
+  runNpmInstall,
+  runPackageJsonScript,
+  PrepareCacheOptions,
+  BuildOptions,
+} from '@now/build-utils';
+
+interface CompilerConfig {
+  includeFiles?: string[]
+}
+
+interface DownloadOptions {
+  files: Files,
+  entrypoint: string;
+  workPath: string;
+  npmArguments?: string[];
+}
+
+async function downloadInstallAndBundle({
+  files,
+  entrypoint,
+  workPath,
+  npmArguments = []
+}: DownloadOptions) {
+  const userPath = join(workPath, 'user');
+  const nccPath = join(workPath, 'ncc');
+
+  console.log('downloading user files...');
+  const downloadedFiles = await download(files, userPath);
+
+  console.log("installing dependencies for user's code...");
+  const entrypointFsDirname = join(userPath, dirname(entrypoint));
+  await runNpmInstall(entrypointFsDirname, npmArguments);
+
+  console.log('writing ncc package.json...');
+  await download(
+    {
+      'package.json': new FileBlob({
+        data: JSON.stringify({
+          license: 'UNLICENSED',
+          dependencies: {
+            '@zeit/ncc': '0.16.1',
+          }
+        })
+      })
+    },
+    nccPath
+  );
+
+  console.log('installing dependencies for ncc...');
+  await runNpmInstall(nccPath, npmArguments);
+  const entrypointPath = downloadedFiles[entrypoint].fsPath;
+  return { entrypointPath, workNccPath: nccPath, entrypointFsDirname };
+}
+
+async function compile(workNccPath: string, entrypointPath: string, entrypoint: string, config: CompilerConfig) {
+  const input = entrypointPath;
+  const inputDir = dirname(input);
+  const ncc = require(join(workNccPath, 'node_modules/@zeit/ncc'));
+  const { code, assets } = await ncc(input);
+
+  if (config && config.includeFiles) {
+    for (const pattern of config.includeFiles) {
+      const files = await glob(pattern, inputDir);
+
+      for (const assetName of Object.keys(files)) {
+        const stream = files[assetName].toStream();
+        const { mode } = files[assetName];
+        const { data } = await FileBlob.fromStream({ stream });
+
+        assets[assetName] = {
+          'source': data,
+          'permissions': mode
+        };
+      }
+    }
+  }
+
+  const preparedFiles = {};
+  const blob = new FileBlob({ data: code });
+  // move all user code to 'user' subdirectory
+  preparedFiles[join('user', entrypoint)] = blob;
+  // eslint-disable-next-line no-restricted-syntax
+  for (const assetName of Object.keys(assets)) {
+    const { source: data, permissions: mode } = assets[assetName];
+    const blob2 = new FileBlob({ data, mode });
+    preparedFiles[join('user', dirname(entrypoint), assetName)] = blob2;
+  }
+
+  return preparedFiles;
+}
+
+export const config = {
+  maxLambdaSize: '5mb'
+};
+
+export async function build({ files, entrypoint, workPath, config }: BuildOptions) {
+  const {
+    entrypointPath,
+    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 ncc...');
+  const preparedFiles = await compile(workNccPath, entrypointPath, entrypoint, config);
+  const launcherPath = join(__dirname, 'launcher.js');
+  let launcherData = await readFile(launcherPath, 'utf8');
+
+  launcherData = launcherData.replace(
+    '// PLACEHOLDER',
+    [
+      'process.chdir("./user");',
+      `listener = require("./${join('user', entrypoint)}");`,
+      'if (listener.default) listener = listener.default;'
+    ].join(' ')
+  );
+
+  const launcherFiles = {
+    'launcher.js': new FileBlob({ data: launcherData }),
+    'bridge.js': new FileFsRef({ fsPath: require('@now/node-bridge') })
+  };
+
+  const lambda = await createLambda({
+    files: { ...preparedFiles, ...launcherFiles },
+    handler: 'launcher.launcher',
+    runtime: 'nodejs8.10'
+  });
+
+  return { [entrypoint]: lambda };
+}
+
+export async function prepareCache({ files, entrypoint, workPath, cachePath }: PrepareCacheOptions) {
+  await 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('ncc/node_modules/**', cachePath)),
+    ...(await glob('ncc/package-lock.json', cachePath)),
+    ...(await glob('ncc/yarn.lock', cachePath))
+  };
+}

packages/now-node/src/launcher.ts

@@ -0,0 +1,26 @@
+import { Server } from 'http';
+import { Bridge } from './bridge';
+
+let listener;
+
+if (!process.env.NODE_ENV) {
+  process.env.NODE_ENV = 'production';
+}
+
+try {
+// PLACEHOLDER
+} catch (err) {
+  if (err.code === 'MODULE_NOT_FOUND') {
+    console.error(err.message);
+    console.error('Did you forget to add it to "dependencies" in `package.json`?');
+    process.exit(1);
+  } else {
+    throw err;
+  }
+}
+
+const server = new Server(listener);
+const bridge = new Bridge(server);
+bridge.listen();
+
+exports.launcher = bridge.launcher;

packages/now-node/test/fixtures/09-include-files/index.js

@@ -0,0 +1,7 @@
+const edge = require('edge.js');
+
+module.exports = (req, resp) => {
+  edge.registerViews('templates');
+
+  resp.end(edge.render('index', { name: 'Now!' }));
+};

packages/now-node/test/fixtures/09-include-files/now.json

@@ -0,0 +1,20 @@
+{
+  "version": 2,
+  "builds": [
+    {
+      "src": "index.js",
+      "use": "@now/node",
+      "config": {
+        "includeFiles": [
+          "templates/**"
+        ]
+      }
+    }
+  ],
+  "probes": [
+    {
+      "path": "/",
+      "mustContain": "hello Now!"
+    }
+  ]
+}

packages/now-node/test/fixtures/09-include-files/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "edge.js": "^1.1.4"
+  }
+}

packages/now-node/test/fixtures/09-include-files/templates/index.edge

@@ -0,0 +1 @@
+hello {{ name }}

packages/now-node/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "lib": ["esnext"],
+    "target": "esnext",
+    "module": "commonjs",
+    "outDir": "dist",
+    "sourceMap": false,
+    "declaration": false
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

packages/now-php-bridge/launcher.js

@@ -64,7 +64,8 @@ async function transformFromAwsRequest({
   const { pathname, search, query: queryString } = parseUrl(path);
   let requestUri = pathname + (search || '');
 
-  let filename = pathJoin('/var/task/user', pathname);
+  let filename = pathJoin('/var/task/user',
+    process.env.NOW_ENTRYPOINT || pathname);
   if (await isDirectory(filename)) {
     if (!filename.endsWith('/')) {
       filename += '/';

packages/now-php-bridge/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/php-bridge",
-  "version": "0.4.14-canary.0",
+  "version": "0.4.16-canary.0",
   "license": "MIT",
   "repository": {
     "type": "git",

packages/now-php/index.js

@@ -20,6 +20,9 @@ exports.build = async ({ files, entrypoint }) => {
     files: { ...userFiles, ...bridgeFiles },
     handler: 'launcher.launcher',
     runtime: 'nodejs8.10',
+    environment: {
+      NOW_ENTRYPOINT: entrypoint,
+    },
   });
 
   return { [entrypoint]: lambda };

packages/now-php/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/php",
-  "version": "0.4.14-canary.1",
+  "version": "0.4.16-canary.0",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -8,7 +8,7 @@
     "directory": "packages/now-php"
   },
   "dependencies": {
-    "@now/php-bridge": "^0.4.14-canary.0"
+    "@now/php-bridge": "^0.4.16-canary.0"
   },
   "scripts": {
     "test": "jest"

packages/now-php/test/fixtures/19-routes/index.php

@@ -0,0 +1,2 @@
+<?php
+print('cow:RANDOMNESS_PLACEHOLDER:' . $_SERVER['REQUEST_URI']);

packages/now-php/test/fixtures/19-routes/now.json

@@ -0,0 +1,13 @@
+{
+  "version": 2,
+  "builds": [
+    { "src": "index.php", "use": "@now/php" }
+  ],
+  "routes": [
+    { "src": "/(.*)", "dest": "index.php" }
+  ],
+  "probes": [
+    { "path": "/any", "mustContain": "cow:RANDOMNESS_PLACEHOLDER:/any" },
+    { "path": "/any?type=some", "mustContain": "cow:RANDOMNESS_PLACEHOLDER:/any?type=some" }
+  ]
+}

packages/now-python/index.js

@@ -7,14 +7,14 @@ const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line impo
 const { createLambda } = require('@now/build-utils/lambda.js'); // eslint-disable-line import/no-extraneous-dependencies
 const downloadAndInstallPip = require('./download-and-install-pip');
 
-async function pipInstall(pipPath, srcDir, ...args) {
-  console.log(`running "pip install -t ${srcDir} ${args.join(' ')}"...`);
+async function pipInstall(pipPath, workDir, ...args) {
+  console.log(`running "pip install --target ${workDir} ${args.join(' ')}"...`);
   try {
-    await execa(pipPath, ['install', '-t', srcDir, ...args], {
+    await execa(pipPath, ['install', '--target', '--upgrade', '.', ...args], {
       stdio: 'inherit',
     });
   } catch (err) {
-    console.log(`failed to run "pip install -t ${srcDir} ${args.join(' ')}"`);
+    console.log(`failed to run "pip install -t ${workDir} ${args.join(' ')}"`);
     throw err;
   }
 }
@@ -23,13 +23,11 @@ exports.config = {
   maxLambdaSize: '5mb',
 };
 
-exports.build = async ({ files, entrypoint }) => {
+exports.build = async ({ workDir, 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, workDir);
 
   // this is where `pip` will be installed to
   // we need it to be under `/tmp`
@@ -38,13 +36,36 @@ exports.build = async ({ files, entrypoint }) => {
 
   const pipPath = await downloadAndInstallPip();
 
-  await pipInstall(pipPath, srcDir, 'requests');
+  try {
+    // See: https://stackoverflow.com/a/44728772/376773
+    //
+    // The `setup.cfg` is required for `now dev` on MacOS, where without
+    // this file being present in the src dir then this error happens:
+    //
+    // distutils.errors.DistutilsOptionError: must supply either home
+    // or prefix/exec-prefix -- not both
+    const setupCfg = path.join(workDir, 'setup.cfg');
+    await writeFile(setupCfg, '[install]\nprefix=\n');
+  } catch (err) {
+    console.log('failed to create "setup.cfg" file');
+    throw err;
+  }
 
-  if (files['requirements.txt']) {
-    console.log('found "requirements.txt"');
+  await pipInstall(pipPath, workDir, 'requests');
+
+  const entryDirectory = path.dirname(entrypoint);
+  const requirementsTxt = path.join(entryDirectory, 'requirements.txt');
+
+  if (files[requirementsTxt]) {
+    console.log('found local "requirements.txt"');
+
+    const requirementsTxtPath = files[requirementsTxt].fsPath;
+    await pipInstall(pipPath, workDir, '-r', requirementsTxtPath);
+  } else if (files['requirements.txt']) {
+    console.log('found global "requirements.txt"');
 
     const requirementsTxtPath = files['requirements.txt'].fsPath;
-    await pipInstall(pipPath, srcDir, '-r', requirementsTxtPath);
+    await pipInstall(pipPath, workDir, '-r', requirementsTxtPath);
   }
 
   const originalNowHandlerPyContents = await readFile(
@@ -67,12 +88,12 @@ exports.build = async ({ files, entrypoint }) => {
   const nowHandlerPyFilename = 'now__handler__python';
 
   await writeFile(
-    path.join(srcDir, `${nowHandlerPyFilename}.py`),
+    path.join(workDir, `${nowHandlerPyFilename}.py`),
     nowHandlerPyContents,
   );
 
   const lambda = await createLambda({
-    files: await glob('**', srcDir),
+    files: await glob('**', workDir),
     handler: `${nowHandlerPyFilename}.now_handler`,
     runtime: 'python3.6',
     environment: {},

packages/now-python/now_handler.py

@@ -1,23 +1,35 @@
+import base64
 from http.server import HTTPServer
 import json
 import requests
 from __NOW_HANDLER_FILENAME import handler
 import _thread
 
-server = HTTPServer(('', 3000), handler)
+
+server = HTTPServer(('', 0), handler)
+port = server.server_address[1]
 
 def now_handler(event, context):
     _thread.start_new_thread(server.handle_request, ())
+
     payload = json.loads(event['body'])
     path = payload['path']
     headers = payload['headers']
     method = payload['method']
-    
-    res = requests.request(method, 'http://0.0.0.0:3000' + path, headers=headers)
+    encoding = payload.get('encoding')
+    body = payload.get('body')
+
+    if (
+        (body is not None and len(body) > 0) and
+        (encoding is not None and encoding == 'base64')
+    ):
+        body = base64.b64decode(body)
+
+    res = requests.request(method, 'http://0.0.0.0:' + str(port) + path,
+                           headers=headers, data=body, allow_redirects=False)
 
     return {
         'statusCode': res.status_code,
         'headers': dict(res.headers),
-        'body': res.text
+        'body': res.text,
     }
-

packages/now-python/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@now/python",
-  "version": "0.0.41-canary.0",
+  "version": "0.0.42-canary.1",
   "main": "index.js",
   "license": "MIT",
   "repository": {

packages/now-rust/Cargo.lock

@@ -448,7 +448,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "now_lambda"
-version = "0.1.1"
+version = "0.1.3"
 dependencies = [
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",

packages/now-rust/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "now_lambda"
-version = "0.1.1"
+version = "0.1.3"
 authors = ["Antonio Nuno Monteiro <anmonteiro@gmail.com>"]
 edition = "2018"
 description = "Rust bindings for Now.sh Lambdas"
@@ -22,4 +22,4 @@ http = "0.1"
 tokio = "^0.1"
 base64 = "0.10"
 log = "^0.4"
-lambda_runtime = "0.2.0"
+lambda_runtime = "0.2.0"

packages/now-rust/download-install-rust-toolchain.js

@@ -1,62 +0,0 @@
-const tar = require('tar');
-const fetch = require('node-fetch');
-
-const rustUrl = 'https://dmmcy0pwk6bqi.cloudfront.net/rust.tar.gz';
-const ccUrl = 'https://dmmcy0pwk6bqi.cloudfront.net/gcc-4.8.5.tgz';
-
-async function downloadRustToolchain() {
-  console.log('downloading the rust toolchain');
-  const res = await fetch(rustUrl);
-
-  if (!res.ok) {
-    throw new Error(`Failed to download: ${rustUrl}`);
-  }
-
-  const { HOME } = process.env;
-  return new Promise((resolve, reject) => {
-    res.body
-      .on('error', reject)
-      .pipe(tar.extract({ gzip: true, cwd: HOME }))
-      .on('finish', () => resolve());
-  });
-}
-
-async function downloadGCC() {
-  console.log('downloading GCC');
-  const res = await fetch(ccUrl);
-
-  if (!res.ok) {
-    throw new Error(`Failed to download: ${ccUrl}`);
-  }
-
-  return new Promise((resolve, reject) => {
-    res.body
-      .on('error', reject)
-      // NOTE(anmonteiro): We pipe GCC into `/tmp` instead of getting a writable
-      // directory from `@now/build-utils` because the GCC distribution that we
-      // use is specifically packaged for AWS Lambda (where `/tmp` is writable)
-      // and contains several hardcoded symlinks to paths in `/tmp`.
-      .pipe(tar.extract({ gzip: true, cwd: '/tmp' }))
-      .on('finish', async () => {
-        const { LD_LIBRARY_PATH } = process.env;
-        // Set the environment variables as per
-        // https://github.com/lambci/lambci/blob/e6c9c7/home/init/gcc#L14-L17
-        const newEnv = {
-          PATH: '/tmp/bin:/tmp/sbin',
-          LD_LIBRARY_PATH: `/tmp/lib:/tmp/lib64:${LD_LIBRARY_PATH}`,
-          CPATH: '/tmp/include',
-          LIBRARY_PATH: '/tmp/lib',
-        };
-
-        return resolve(newEnv);
-      });
-  });
-}
-
-module.exports = async () => {
-  await downloadRustToolchain();
-
-  const newEnv = await downloadGCC();
-
-  return newEnv;
-};

packages/now-rust/index.js

@@ -1,63 +1,76 @@
 const fs = require('fs-extra');
 const path = require('path');
-const concat = require('concat-stream');
 const execa = require('execa');
-const toml = require('toml');
+const toml = require('@iarna/toml');
 const { createLambda } = require('@now/build-utils/lambda.js'); // eslint-disable-line import/no-extraneous-dependencies
 const download = require('@now/build-utils/fs/download.js'); // eslint-disable-line import/no-extraneous-dependencies
 const glob = require('@now/build-utils/fs/glob.js'); // eslint-disable-line import/no-extraneous-dependencies
+const { runShellScript } = require('@now/build-utils/fs/run-user-scripts.js'); // eslint-disable-line import/no-extraneous-dependencies
 const FileFsRef = require('@now/build-utils/file-fs-ref.js'); // eslint-disable-line import/no-extraneous-dependencies
-const installRustAndGCC = require('./download-install-rust-toolchain.js');
-const inferCargoBinaries = require('./inferCargoBinaries.js');
+const FileRef = require('@now/build-utils/file-ref.js'); // eslint-disable-line import/no-extraneous-dependencies
+const installRust = require('./install-rust.js');
 
 exports.config = {
   maxLambdaSize: '25mb',
 };
 
-async function parseTOMLStream(stream) {
-  return new Promise((resolve) => {
-    stream.pipe(concat(data => resolve(toml.parse(data))));
-  });
-}
+const codegenFlags = [
+  '-C', 'target-cpu=ivybridge',
+  '-C', 'target-feature=-aes,-avx,+fxsr,-popcnt,+sse,+sse2,-sse3,-sse4.1,-sse4.2,-ssse3,-xsave,-xsaveopt',
+];
 
-exports.build = async ({ files, entrypoint, workPath }) => {
-  console.log('downloading files');
-  const downloadedFiles = await download(files, workPath);
-
-  const { PATH: toolchainPath, ...otherEnv } = await installRustAndGCC();
-  const { PATH, HOME } = process.env;
-  const rustEnv = {
-    ...process.env,
-    ...otherEnv,
-    PATH: `${path.join(HOME, '.cargo/bin')}:${toolchainPath}:${PATH}`,
-  };
-
-  let cargoToml;
+async function inferCargoBinaries(config) {
   try {
-    cargoToml = await parseTOMLStream(files[entrypoint].toStream());
+    const { stdout: manifestStr } = await execa(
+      'cargo',
+      ['read-manifest'],
+      config,
+    );
+
+    const { targets } = JSON.parse(manifestStr);
+
+    return targets
+      .filter(({ kind }) => kind.includes('bin'))
+      .map(({ name }) => name);
   } catch (err) {
-    console.error('Failed to parse TOML from entrypoint:', entrypoint);
+    console.error('failed to run `cargo read-manifest`');
     throw err;
   }
+}
 
+async function parseTOMLStream(stream) {
+  return toml.parse.stream(stream);
+}
+
+async function buildWholeProject({
+  entrypoint,
+  downloadedFiles,
+  rustEnv,
+  config,
+}) {
   const entrypointDirname = path.dirname(downloadedFiles[entrypoint].fsPath);
-  console.log('running `cargo build --release`...');
+  const { debug } = config;
+  console.log('running `cargo build`...');
   try {
-    await execa('cargo', ['build', '--release'], {
+    await execa('cargo', ['build', '--verbose'].concat(debug ? [] : ['--release']), {
       env: rustEnv,
       cwd: entrypointDirname,
       stdio: 'inherit',
     });
   } catch (err) {
-    console.error('failed to `cargo build --release`');
+    console.error('failed to `cargo build`');
     throw err;
   }
 
-  const targetPath = path.join(entrypointDirname, 'target', 'release');
-  const binaries = await inferCargoBinaries(
-    cargoToml,
-    path.join(entrypointDirname, 'src'),
+  const targetPath = path.join(
+    entrypointDirname,
+    'target',
+    debug ? 'debug' : 'release',
   );
+  const binaries = await inferCargoBinaries({
+    env: rustEnv,
+    cwd: entrypointDirname,
+  });
 
   const lambdas = {};
   const lambdaPath = path.dirname(entrypoint);
@@ -77,23 +90,247 @@ exports.build = async ({ files, entrypoint, workPath }) => {
   );
 
   return lambdas;
+}
+
+async function runUserScripts(entrypoint) {
+  const entryDir = path.dirname(entrypoint);
+  const buildScriptPath = path.join(entryDir, 'build.sh');
+  const buildScriptExists = await fs.exists(buildScriptPath);
+
+  if (buildScriptExists) {
+    console.log('running `build.sh`...');
+    await runShellScript(buildScriptPath);
+  }
+}
+
+async function cargoLocateProject(config) {
+  try {
+    const { stdout: projectDescriptionStr } = await execa(
+      'cargo',
+      ['locate-project'],
+      config,
+    );
+    const projectDescription = JSON.parse(projectDescriptionStr);
+    if (projectDescription != null && projectDescription.root != null) {
+      return projectDescription.root;
+    }
+  } catch (e) {
+    if (!/could not find/g.test(e.stderr)) {
+      console.error("Couldn't run `cargo locate-project`");
+      throw e;
+    }
+  }
+
+  return null;
+}
+
+async function buildSingleFile({
+  workPath,
+  entrypoint,
+  downloadedFiles,
+  rustEnv,
+  config,
+}) {
+  console.log('building single file');
+  const launcherPath = path.join(__dirname, 'launcher.rs');
+  let launcherData = await fs.readFile(launcherPath, 'utf8');
+
+  const entrypointPath = downloadedFiles[entrypoint].fsPath;
+  const entrypointDirname = path.dirname(entrypointPath);
+  launcherData = launcherData.replace(
+    '// PLACEHOLDER',
+    await fs.readFile(path.join(workPath, entrypoint)),
+  );
+  // replace the entrypoint with one that includes the the imports + lambda.start
+  await fs.remove(entrypointPath);
+  await fs.writeFile(entrypointPath, launcherData);
+
+  // Find a Cargo.toml file or TODO: create one
+  const cargoTomlFile = await cargoLocateProject({
+    env: rustEnv,
+    cwd: entrypointDirname,
+  });
+
+  // TODO: we're assuming there's a Cargo.toml file. We need to create one
+  // otherwise
+  let cargoToml;
+  try {
+    cargoToml = await parseTOMLStream(fs.createReadStream(cargoTomlFile));
+  } catch (err) {
+    console.error('Failed to parse TOML from entrypoint:', entrypoint);
+    throw err;
+  }
+
+  const binName = path
+    .basename(entrypointPath)
+    .replace(path.extname(entrypointPath), '');
+  const { package: pkg, dependencies } = cargoToml;
+  // default to latest now_lambda
+  dependencies.now_lambda = '*';
+  const tomlToWrite = toml.stringify({
+    package: pkg,
+    dependencies,
+    bin: [
+      {
+        name: binName,
+        path: entrypointPath,
+      },
+    ],
+  });
+  console.log('toml to write:', tomlToWrite);
+
+  // Overwrite the Cargo.toml file with one that includes the `now_lambda`
+  // dependency and our binary. `dependencies` is a map so we don't run the
+  // risk of having 2 `now_lambda`s in there.
+  await fs.writeFile(cargoTomlFile, tomlToWrite);
+
+  const { debug } = config;
+  console.log('running `cargo build`...');
+  try {
+    await execa(
+      'cargo',
+      ['build', '--bin', binName, '--verbose'].concat(debug ? [] : ['--release']),
+      {
+        env: rustEnv,
+        cwd: entrypointDirname,
+        stdio: 'inherit',
+      },
+    );
+  } catch (err) {
+    console.error('failed to `cargo build`');
+    throw err;
+  }
+
+  const bin = path.join(
+    path.dirname(cargoTomlFile),
+    'target',
+    debug ? 'debug' : 'release',
+    binName,
+  );
+
+  const lambda = await createLambda({
+    files: {
+      bootstrap: new FileFsRef({ mode: 0o755, fsPath: bin }),
+    },
+    handler: 'bootstrap',
+    runtime: 'provided',
+  });
+
+  return {
+    [entrypoint]: lambda,
+  };
+}
+
+exports.build = async (m) => {
+  const { files, entrypoint, workPath } = m;
+  console.log('downloading files');
+  const downloadedFiles = await download(files, workPath);
+
+  await installRust();
+  const { PATH, HOME } = process.env;
+  const rustEnv = {
+    ...process.env,
+    PATH: `${path.join(HOME, '.cargo/bin')}:${PATH}`,
+    RUSTFLAGS: [process.env.RUSTFLAGS, ...codegenFlags].filter(Boolean).join(' '),
+  };
+
+  await runUserScripts(downloadedFiles[entrypoint].fsPath);
+
+  const newM = Object.assign(m, { downloadedFiles, rustEnv });
+  if (path.extname(entrypoint) === '.toml') {
+    return buildWholeProject(newM);
+  }
+  return buildSingleFile(newM);
 };
 
 exports.prepareCache = async ({ cachePath, entrypoint, workPath }) => {
   console.log('preparing cache...');
-  const entrypointDirname = path.dirname(path.join(workPath, entrypoint));
-  const cacheEntrypointDirname = path.dirname(path.join(cachePath, entrypoint));
+
+  let targetFolderDir;
+  if (path.extname(entrypoint) === '.toml') {
+    targetFolderDir = path.dirname(path.join(workPath, entrypoint));
+  } else {
+    const { PATH, HOME } = process.env;
+    const rustEnv = {
+      ...process.env,
+      PATH: `${path.join(HOME, '.cargo/bin')}:${PATH}`,
+      RUSTFLAGS: [process.env.RUSTFLAGS, ...codegenFlags].filter(Boolean).join(' '),
+    };
+    const entrypointDirname = path.dirname(path.join(workPath, entrypoint));
+    const cargoTomlFile = await cargoLocateProject({
+      env: rustEnv,
+      cwd: entrypointDirname,
+    });
+
+    if (cargoTomlFile != null) {
+      targetFolderDir = path.dirname(cargoTomlFile);
+    } else {
+      // `Cargo.toml` doesn't exist, in `build` we put it in the same
+      // path as the entrypoint.
+      targetFolderDir = path.dirname(path.join(workPath, entrypoint));
+    }
+  }
+
+  const cacheEntrypointDirname = path.join(
+    cachePath,
+    path.relative(workPath, targetFolderDir),
+  );
 
   // Remove the target folder to avoid 'directory already exists' errors
   fs.removeSync(path.join(cacheEntrypointDirname, 'target'));
   fs.mkdirpSync(cacheEntrypointDirname);
   // Move the target folder to the cache location
   fs.renameSync(
-    path.join(entrypointDirname, 'target'),
+    path.join(targetFolderDir, 'target'),
     path.join(cacheEntrypointDirname, 'target'),
   );
 
-  return {
-    ...(await glob('**/**', path.join(cachePath))),
-  };
+  const cacheFiles = await glob('**/**', cachePath);
+
+  // eslint-disable-next-line no-restricted-syntax
+  for (const f of Object.keys(cacheFiles)) {
+    const accept = (/(?:^|\/)target\/release\/\.fingerprint\//.test(f))
+      || (/(?:^|\/)target\/release\/build\//.test(f))
+      || (/(?:^|\/)target\/release\/deps\//.test(f))
+      || (/(?:^|\/)target\/debug\/\.fingerprint\//.test(f))
+      || (/(?:^|\/)target\/debug\/build\//.test(f))
+      || (/(?:^|\/)target\/debug\/deps\//.test(f));
+    if (!accept) {
+      delete cacheFiles[f];
+    }
+  }
+
+  return cacheFiles;
+};
+
+function findCargoToml(files, entrypoint) {
+  let currentPath = path.dirname(entrypoint);
+  let cargoTomlPath;
+
+  // eslint-disable-next-line no-constant-condition
+  while (true) {
+    cargoTomlPath = path.join(currentPath, 'Cargo.toml');
+    if (files[cargoTomlPath]) break;
+    const newPath = path.dirname(currentPath);
+    if (currentPath === newPath) break;
+    currentPath = newPath;
+  }
+
+  return cargoTomlPath;
+}
+
+/*
+console.log(findCargoToml({
+  'rust/src/main.rs': true,
+  'rust/Cargo.toml': true,
+  'Cargo.toml': true
+}, 'rust/src/main.rs'));
+*/
+
+exports.getDefaultCache = ({ files, entrypoint }) => {
+  const cargoTomlPath = findCargoToml(files, entrypoint);
+  if (!cargoTomlPath) return undefined;
+  const targetFolderDir = path.dirname(cargoTomlPath);
+  const defaultCacheRef = new FileRef({ digest: 'sha:204e0c840c43473bbd130d7bc704fe5588b4eab43cda9bc940f10b2a0ae14b16' });
+  return { [targetFolderDir]: defaultCacheRef };
 };

packages/now-rust/inferCargoBinaries.js

@@ -1,37 +0,0 @@
-const { exists, readdir, stat } = require('fs-extra');
-const path = require('path');
-
-async function inferCargoBinaries(cargoToml, srcDir) {
-  const { package: pkg, bin } = cargoToml;
-  const binaries = [];
-  const hasMain = await exists(path.join(srcDir, 'main.rs'));
-
-  if (hasMain) {
-    binaries.push(pkg.name);
-  }
-
-  // From: https://doc.rust-lang.org/cargo/reference/manifest.html#the-project-layout
-  //   Do note, however, once you add a [[bin]] section (see below), Cargo will
-  //   no longer automatically build files located in src/bin/*.rs. Instead you
-  //   must create a [[bin]] section for each file you want to build.
-  if (Array.isArray(bin)) {
-    bin.forEach((binary) => {
-      binaries.push(binary.name);
-    });
-  } else {
-    const binDir = path.join(srcDir, 'bin');
-    const filesInSrcBin = (await exists(binDir)) && (await stat(binDir)).isDirectory()
-      ? await readdir(binDir)
-      : [];
-
-    filesInSrcBin.forEach((file) => {
-      if (file.endsWith('.rs')) {
-        binaries.push(file.slice(0, -3));
-      }
-    });
-  }
-
-  return binaries;
-}
-
-module.exports = inferCargoBinaries;

packages/now-rust/install-rust.js

@@ -0,0 +1,48 @@
+const tar = require('tar');
+const fetch = require('node-fetch');
+const execa = require('execa');
+
+const rustUrl = 'https://dmmcy0pwk6bqi.cloudfront.net/rust.tar.gz';
+
+async function downloadRustToolchain() {
+  console.log('downloading the rust toolchain');
+  const res = await fetch(rustUrl);
+
+  if (!res.ok) {
+    throw new Error(`Failed to download: ${rustUrl}`);
+  }
+
+  const { HOME } = process.env;
+  return new Promise((resolve, reject) => {
+    res.body
+      .on('error', reject)
+      .pipe(tar.extract({ gzip: true, cwd: HOME }))
+      .on('finish', () => resolve());
+  });
+}
+
+async function installOpenSSL() {
+  console.log('installing openssl-devel...');
+  try {
+    // need to downgrade otherwise yum can't resolve the dependencies given
+    // a later version is already installed in the machine.
+    await execa(
+      'yum',
+      ['downgrade', '-y', 'krb5-libs-1.14.1-27.41.amzn1.x86_64'],
+      {
+        stdio: 'inherit',
+      },
+    );
+    await execa('yum', ['install', '-y', 'openssl-devel'], {
+      stdio: 'inherit',
+    });
+  } catch (err) {
+    console.error('failed to `yum install -y openssl-devel`');
+    throw err;
+  }
+}
+
+module.exports = async () => {
+  await downloadRustToolchain();
+  await installOpenSSL();
+};