Publish Stable

- @now/build-utils@1.2.0
 - @now/cgi@1.0.1
 - now@16.7.0
 - @now/go@1.0.1
 - @now/next@2.2.0
 - @now/node@1.3.0
 - @now/python@1.0.1
 - @now/ruby@1.0.1
 - @now/static-build@0.14.0

.circleci/config.yml

@@ -63,9 +63,6 @@ jobs:
     working_directory: ~/repo
     steps:
       - checkout
-      - run:
-          name: Installing apt dependencies
-          command: sudo apt install -y rsync
       - attach_workspace:
           at: .
       - run:
@@ -115,15 +112,12 @@ jobs:
 
   test-integration-macos-node-8:
     macos:
-      xcode: '9.2.0'
+      xcode: '9.0.1'
     working_directory: ~/repo
     steps:
       - checkout
       - attach_workspace:
           at: .
-      - run:
-          name: Update Node.js
-          command: curl -sfLS install-node.now.sh/8.11 | sh -s -- --yes
       - run:
           name: Output version
           command: node --version
@@ -208,15 +202,12 @@ jobs:
 
   test-integration-macos-now-dev-node-8:
     macos:
-      xcode: '9.2.0'
+      xcode: '9.0.1'
     working_directory: ~/repo
     steps:
       - checkout
       - attach_workspace:
           at: .
-      - run:
-          name: Update Node.js
-          command: curl -sfLS install-node.now.sh/8.11 | sh -s -- --yes
       - run:
           name: Output version
           command: node --version
@@ -332,7 +323,7 @@ jobs:
           name: Running Integration Tests Once
           command: yarn test-integration-once --clean false
 
-  coverage:
+  test-unit:
     docker:
       - image: circleci/node:10
     working_directory: ~/repo
@@ -344,8 +335,24 @@ jobs:
           name: Compiling `now dev` HTML error templates
           command: node packages/now-cli/scripts/compile-templates.js
       - run:
-          name: Run unit tests
-          command: yarn workspace now run test-unit
+          name: Output version
+          command: node --version
+      - run:
+          name: Running Unit Tests
+          command: yarn test-unit --clean false
+      - persist_to_workspace:
+          root: .
+          paths:
+            - packages/now-cli/.nyc_output
+
+  coverage:
+    docker:
+      - image: circleci/node:10
+    working_directory: ~/repo
+    steps:
+      - checkout
+      - attach_workspace:
+          at: .
       - run:
           name: Run coverage report
           command: yarn workspace now run coverage
@@ -466,6 +473,9 @@ workflows:
       - test-integration-once:
           requires:
             - build
+      - test-unit:
+          requires:
+            - build
           filters:
             tags:
               only: /.*/
@@ -484,6 +494,7 @@ workflows:
             - test-integration-linux-now-dev-node-10
             - test-integration-linux-now-dev-node-12
             - test-integration-once
+            - test-unit
             - test-lint
           filters:
             tags:

.eslintignore

@@ -4,6 +4,9 @@ dist
 # gatsby-plugin-now
 packages/gatsby-plugin-now/test/fixtures
 
+# now-build-utils
+packages/now-build-utils/test/fixtures
+
 # now-cli
 packages/now-cli/@types
 packages/now-cli/download

.gitignore

@@ -1,6 +1,7 @@
 node_modules
 package-lock.json
 dist
+.vscode
 npm-debug.log
 yarn-error.log
 .nyc_output

.kodiak.toml

@@ -12,5 +12,6 @@ optimistic_updates = true
 
 [merge.message]
 title = "pull_request_title"
+body = "pull_request_body"
 include_pr_number = true
 body_type = "markdown"

DEVELOPING_A_RUNTIME.md

@@ -1,20 +1,20 @@
-# Builders Developer Reference
+# Runtime Developer Reference
 
-The following page is a reference for how to create a Builder using the available Builder's API.
+The following page is a reference for how to create a Runtime using the available Runtime API.
 
-A Builder is an npm module that exposes a `build` function and optionally an `analyze` function and `prepareCache` function.
-Official Builders are published to [npmjs.com](https://npmjs.com) as a package and referenced in the `use` property of the `now.json` configuration file.
-However, the `use` property will work with any [npm install argument](https://docs.npmjs.com/cli/install) such as a git repo url which is useful for testing your Builder.
+A Runtime is an npm module that exposes a `build` function and optionally an `analyze` function and `prepareCache` function.
+Official Runtimes are published to [npmjs.com](https://npmjs.com) as a package and referenced in the `use` property of the `now.json` configuration file.
+However, the `use` property will work with any [npm install argument](https://docs.npmjs.com/cli/install) such as a git repo url which is useful for testing your Runtime.
 
-See the [Builders Documentation](https://zeit.co/docs/v2/advanced/builders) to view example usage.
+See the [Runtimes Documentation](https://zeit.co/docs/runtimes) to view example usage.
 
-## Builder Exports
+## Runtime Exports
 
 ### `version`
 
-A **required** exported constant that decides which version of the Builder API to use.
+A **required** exported constant that decides which version of the Runtime API to use.
 
-The latest and suggested version is `2`.
+The latest and suggested version is `3`.
 
 ### `analyze`
 
@@ -41,7 +41,7 @@ export analyze(options: AnalyzeOptions) {
 
 ### `build`
 
-A **required** exported function that returns a [Files](#files) data structure that contains the Build outputs, which can be a [Static File](#file) or a [Serverless Function](#serverless-function).
+A **required** exported function that returns a [Serverless Function](#serverless-function).
 
 What's a Serverless Function? Read about [Serverless Function concepts](https://zeit.co/docs/v2/deployments/concepts/lambdas) to learn more.
 
@@ -58,9 +58,9 @@ build({
     filesRemoved?: Array<String>
   }
 }) : {
-  watch: Array<String>,
-  output: Files output,
-  routes: Object
+  watch?: Array<String>,
+  output: Lambda,
+  routes?: Object
 }
 ```
 
@@ -109,7 +109,7 @@ export prepareCache(options: PrepareCacheOptions) {
 
 ### `shouldServe`
 
-An **optional** exported function that is only used by `now dev` in [Now CLI](https:///download) and indicates whether a [Builder](https://zeit.co/docs/v2/advanced/builders) wants to be responsible for building a certain request path.
+An **optional** exported function that is only used by `now dev` in [Now CLI](https:///download) and indicates whether a [Runtime](https://zeit.co/docs/v2/advanced/runtimes) wants to be responsible for building a certain request path.
 
 ```js
 shouldServe({
@@ -133,7 +133,7 @@ export shouldServe(options: ShouldServeOptions) {
 
 If this method is not defined, Now CLI will default to [this function](https://github.com/zeit/now/blob/52994bfe26c5f4f179bdb49783ee57ce19334631/packages/now-build-utils/src/should-serve.ts).
 
-### Builder Options
+### Runtime Options
 
 The exported functions [`analyze`](#analyze), [`build`](#build), and [`prepareCache`](#preparecache) receive one argument with the following properties.
 
@@ -145,78 +145,15 @@ The exported functions [`analyze`](#analyze), [`build`](#build), and [`prepareCa
 - `cachePath`: A writable temporary directory where you can build a cache for the next run. This is only passed to `prepareCache`.
 - `config`: An arbitrary object passed from by the user in the [Build definition](#defining-the-build-step) in `now.json`.
 
-## Example: html-minifier
+## Examples
 
-Let's walk through what it takes to create a simple builder that takes in a HTML source file and yields a minified HTML static file as its build output.
-
-While this is a very simple builder, the approach demonstrated here can be used to return anything: one or more static files and/or one or more lambdas.
-
-## Setting up the module
-
-### Defining the analyze step
-
-The `analyze` hook is optional. Its goal is to give the developer a tool to avoid wasting time _re-computing a build_ that has already occurred.
-
-The return value of `analyze` is a _fingerprint_: a simple string that uniquely identifies the build process.
-
-If `analyze` is not specified, its behavior is to use as the fingerprint the combined checksums of **all the files in the same directory level as the entrypoint**. This is a default that errs on making sure that we re-execute builds when files _other than the entrypoint_ (like dependencies, manifest files, etc) have changed.
-
-For our `html-minify` example, we know that HTML files don't have dependencies. Therefore, our analyze step can just return the `digest` of the entrypoint.
-
-Our `index.js` file looks as follows:
-
-```js
-exports.analyze = function({ files, entrypoint }) {
-  return files[entrypoint].digest
-}
-```
-
-This means that we will only re-minify and re-create the build output _only if the file contents (and therefore its digest) change._
-
-### Defining the build step
-
-Your module will need some utilities to manipulate the data structures we pass you, create new ones and alter the filesystem.
-
-To that end, we expose our API as part of a `@now/build-utils` package. This package is always loaded on your behalf, so make sure it's only included as `peerDependencies` in your `package.json`.
-
-Builders can include dependencies of their liking:
-
-```js
-const htmlMinifier = require('html-minifier')
-
-exports.version = 2
-
-exports.analyze = ({ files, entrypoint }) => files[entrypoint].digest
-
-exports.build = async ({ files, entrypoint, config }) => {
-  const stream = files[entrypoint].toStream()
-  const options = Object.assign({}, config || {})
-  const { data } = await FileBlob.fromStream({ stream })
-  const content = data.toString()
-  const minified = htmlMinifier(content, options)
-  const result = new FileBlob({ data: minified })
-
-  return {
-    output: {
-      [entrypoint]: result
-    },
-    watch: [],
-    routes: {}
-  }
-}
-```
-
-### Defining a `prepareCache` step
-
-If our builder had performed work that could be re-used in the next build invocation, we could define a `prepareCache` step.
-
-In this case, there are not intermediate artifacts that we can cache, and our `analyze` step already takes care of caching the full output based on the fingerprint of the input.
+Check out our [Node.js Runtime](https://github.com/zeit/now/tree/master/packages/now-node), [Go Runtime](https://github.com/zeit/now/tree/master/packages/now-go), [Python Runtime](https://github.com/zeit/now/tree/master/packages/now-python) or [Ruby Runtime](https://github.com/zeit/now/tree/master/packages/now-ruby) for examples of how to build one.
 
 ## Technical Details
 
 ### Execution Context
 
-A [Serverless Function](https://zeit.co/docs/v2/advanced/concepts/lambdas) is created where the builder logic is executed. The lambda is run using the Node.js 8 runtime. A brand new sandbox is created for each deployment, for security reasons. The sandbox is cleaned up between executions to ensure no lingering temporary files are shared from build to build.
+A [Serverless Function](https://zeit.co/docs/v2/advanced/concepts/lambdas) is created where the Runtime logic is executed. The lambda is run using the Node.js 8 runtime. A brand new sandbox is created for each deployment, for security reasons. The sandbox is cleaned up between executions to ensure no lingering temporary files are shared from build to build.
 
 All the APIs you export ([`analyze`](#analyze), [`build`](#build) and [`prepareCache`](#preparecache)) are not guaranteed to be run in the same process, but the filesystem we expose (e.g.: `workPath` and the results of calling [`getWriteableDirectory`](#getWriteableDirectory) ) is retained.
 
@@ -228,23 +165,23 @@ When a new build is created, we pre-populate the `workPath` supplied to `analyze
 
 The `analyze` step can modify that directory, and it will not be re-created when it's supplied to `build` and `prepareCache`.
 
-To learn how the cache key is computed and invalidated, refer to the [overview](https://zeit.co/docs/v2/advanced/builders#technical-details).
+To learn how the cache key is computed and invalidated, refer to the [overview](https://zeit.co/docs/v2/advanced/runtimes#technical-details).
 
 ### Accessing Environment and Secrets
 
-The env and secrets specified by the user as `build.env` are passed to the builder process. This means you can access user env via `process.env` in Node.js.
+The env and secrets specified by the user as `build.env` are passed to the Runtime process. This means you can access user env via `process.env` in Node.js.
 
 ### Utilities as peerDependencies
 
-When you publish your builder to npm, make sure to not specify `@now/build-utils` (as seen below in the API definitions) as a dependency, but rather as part of `peerDependencies`.
+When you publish your Runtime to npm, make sure to not specify `@now/build-utils` (as seen below in the API definitions) as a dependency, but rather as part of `peerDependencies`.
 
 ## Types
 
 ### `Files`
 
 ```ts
-import { File } from '@now/build-utils'
-type Files = { [filePath: string]: File }
+import { File } from '@now/build-utils';
+type Files = { [filePath: string]: File };
 ```
 
 This is an abstract type that is implemented as a plain [JavaScript Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object). It's helpful to think of it as a virtual filesystem representation.
@@ -265,7 +202,7 @@ An example of a valid output `Files` object is:
 This is an abstract type that can be imported if you are using TypeScript.
 
 ```ts
-import { File } from '@now/build-utils'
+import { File } from '@now/build-utils';
 ```
 
 Valid `File` types include:
@@ -277,7 +214,7 @@ Valid `File` types include:
 ### `FileRef`
 
 ```ts
-import { FileRef } from '@now/build-utils'
+import { FileRef } from '@now/build-utils';
 ```
 
 This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes) that represents an abstract file instance stored in our platform, based on the file identifier string (its checksum). When a `Files` object is passed as an input to `analyze` or `build`, all its values will be instances of `FileRef`.
@@ -294,7 +231,7 @@ This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaSc
 ### `FileFsRef`
 
 ```ts
-import { FileFsRef } from '@now/build-utils'
+import { FileFsRef } from '@now/build-utils';
 ```
 
 This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes) that represents an abstract instance of a file present in the filesystem that the build process is executing in.
@@ -312,7 +249,7 @@ This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaSc
 ### `FileBlob`
 
 ```ts
-import { FileBlob } from '@now/build-utils'
+import { FileBlob } from '@now/build-utils';
 ```
 
 This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes) that represents an abstract instance of a file present in memory.
@@ -330,10 +267,10 @@ This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaSc
 ### `Lambda`
 
 ```ts
-import { Lambda } from '@now/build-utils'
+import { Lambda } from '@now/build-utils';
 ```
 
-This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), called a Serverless Function, that can be created by supplying `files`, `handler`, `runtime`, and `environment` as an object to the [`createLambda`](#createlambda) helper. The instances of this class should not be created directly. Instead use a call to [`createLambda`](#createlambda).
+This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), called a Serverless Function, that can be created by supplying `files`, `handler`, `runtime`, and `environment` as an object to the [`createLambda`](#createlambda) helper. The instances of this class should not be created directly. Instead, invoke the [`createLambda`](#createlambda) helper function.
 
 **Properties:**
 
@@ -346,39 +283,39 @@ This is a [JavaScript class](https://developer.mozilla.org/en-US/docs/Web/JavaSc
 
 This is an abstract enumeration type that is implemented by one of the following possible `String` values:
 
+- `nodejs12.x`
 - `nodejs10.x`
-- `nodejs8.10`
 - `go1.x`
-- `java-1.8.0-openjdk`
+- `java11`
+- `python3.8`
 - `python3.6`
-- `python2.7`
 - `dotnetcore2.1`
-- `dotnetcore2.0`
-- `dotnetcore1.0`
+- `ruby2.5`
+- `provided`
 
 ## JavaScript API
 
-The following is exposed by `@now/build-utils` to simplify the process of writing Builders, manipulating the file system, using the above types, etc.
+The following is exposed by `@now/build-utils` to simplify the process of writing Runtimes, manipulating the file system, using the above types, etc.
 
 ### `createLambda`
 
 Signature: `createLambda(Object spec) : Lambda`
 
 ```ts
-import { createLambda } from '@now/build-utils'
+import { createLambda } from '@now/build-utils';
 ```
 
 Constructor for the [`Lambda`](#lambda) type.
 
 ```js
-const { createLambda, FileBlob } = require('@now/build-utils')
+const { createLambda, FileBlob } = require('@now/build-utils');
 await createLambda({
   runtime: 'nodejs8.10',
   handler: 'index.main',
   files: {
-    'index.js': new FileBlob({ data: 'exports.main = () => {}' })
-  }
-})
+    'index.js': new FileBlob({ data: 'exports.main = () => {}' }),
+  },
+});
 ```
 
 ### `download`
@@ -386,7 +323,7 @@ await createLambda({
 Signature: `download() : Files`
 
 ```ts
-import { download } from '@now/build-utils'
+import { download } from '@now/build-utils';
 ```
 
 This utility allows you to download the contents of a [`Files`](#files) data structure, therefore creating the filesystem represented in it.
@@ -396,7 +333,7 @@ Since `Files` is an abstract way of representing files, you can think of `downlo
 If the **optional** `meta` property is passed (the argument for [build](#build)), only the files that have changed are downloaded. This is decided using `filesRemoved` and `filesChanged` inside that object.
 
 ```js
-await download(files, workPath, meta)
+await download(files, workPath, meta);
 ```
 
 ### `glob`
@@ -404,7 +341,7 @@ await download(files, workPath, meta)
 Signature: `glob() : Files`
 
 ```ts
-import { glob } from '@now/build-utils'
+import { glob } from '@now/build-utils';
 ```
 
 This utility allows you to _scan_ the filesystem and return a [`Files`](#files) representation of the matched glob search string. It can be thought of as the reverse of [`download`](#download).
@@ -425,7 +362,7 @@ exports.build = ({ files, workPath }) => {
 Signature: `getWriteableDirectory() : String`
 
 ```ts
-import { getWriteableDirectory } from '@now/build-utils'
+import { getWriteableDirectory } from '@now/build-utils';
 ```
 
 In some occasions, you might want to write to a temporary directory.
@@ -435,7 +372,7 @@ In some occasions, you might want to write to a temporary directory.
 Signature: `rename(Files) : Files`
 
 ```ts
-import { rename } from '@now/build-utils'
+import { rename } from '@now/build-utils';
 ```
 
 Renames the keys of the [`Files`](#files) object, which represent the paths. For example, to remove the `*.go` suffix you can use:

README.md

@@ -3,8 +3,6 @@
 [![Build Status](https://badgen.net/circleci/github/zeit/now/master)](https://circleci.com/gh/zeit/workflows/now/tree/master)
 [![Join the community on Spectrum](https://withspectrum.github.io/badge/badge.svg)](https://spectrum.chat/zeit)
 
-**Note**: The [canary](https://github.com/zeit/now/tree/canary) branch is under heavy development – the stable release branch is [master](https://github.com/zeit/now/tree/master).
-
 ## Usage
 
 To install the latest version of Now CLI, visit [zeit.co/download](https://zeit.co/download) or run this command:

VERSIONING.md

@@ -1,25 +0,0 @@
-# Versioning
-
-Builders are released to two different channels.
-
-## Channels
-
-| Channel | Git Branch                                                    | npm dist-tag | use example        |
-| ------- | ------------------------------------------------------------- | ------------ | ------------------ |
-| Canary  | [canary](https://github.com/zeit/now/commits/canary)          | `@canary`    | `@now/node@canary` |
-| Stable  | [master](https://github.com/zeit/now/commits/master)          | `@latest`    | `@now/node@latest` |
-
-All PRs are submitted to the `canary` branch. Once a PR is merged into the `canary` branch, it should be published to npm immediately using the Canary Channel.
-
-## Version Selection
-
-Since Builders are published to [npmjs.com](https://npmjs.com), this makes versioning works the same for Builders as it does for any npm package. The `use` statement in [now.json](https://zeit.co/docs/v2/advanced/configuration#builds) has a similar syntax to `npm install`.
-
-The following are valid examples [@now/node](https://www.npmjs.com/package/@now/node?activeTab=versions):
-
-- `@now/node`
-- `@now/node@0.7.3`
-- `@now/node@canary`
-- `@now/node@0.7.2-canary.2`
-
-We always recommend using the latest version by leaving off the dist-tag suffix, `@now/node` for example.

changelog.js

@@ -4,7 +4,7 @@ const commit = execSync('git log --pretty=format:"%s %H"')
   .toString()
   .trim()
   .split('\n')
-  .find(line => line.startsWith('Publish '))
+  .find(line => line.startsWith('Publish Stable '))
   .split(' ')
   .pop();
 
@@ -12,7 +12,31 @@ if (!commit) {
   throw new Error('Unable to find last publish commit');
 }
 
-const log = execSync(`git log --pretty=format:"- %s [%an]" ${commit}...HEAD`).toString().trim();
+const log =
+  execSync(`git log --pretty=format:"- %s [%an]" ${commit}...HEAD`)
+    .toString()
+    .trim()
+    .split('\n')
+    .filter(line => !line.startsWith('- Publish Canary '))
+    .join('\n') || 'NO CHANGES DETECTED';
 
-console.log(`Changes since the last publish commit ${commit}:`);
+console.log(`Changes since the last Stable release (${commit.slice(0, 7)}):`);
 console.log(`\n${log}\n`);
+
+const pkgs =
+  Array.from(
+    new Set(
+      execSync(`git diff --name-only ${commit}...HEAD`)
+        .toString()
+        .trim()
+        .split('\n')
+        .filter(line => line.startsWith('packages/'))
+        .map(line => line.split('/')[1])
+        .map(pkgName => require(`./packages/${pkgName}/package.json`).name)
+    )
+  ).join(',') || 'now';
+
+console.log('To publish a stable release, execute the following:');
+console.log(
+  `\ngit pull && lerna version --message 'Publish Stable' --exact --force-publish=${pkgs}\n`
+);

diff.js

@@ -1,36 +0,0 @@
-const { execSync } = require('child_process');
-const { join } = require('path');
-const { tmpdir } = require('os');
-const { mkdirSync, writeFileSync } = require('fs');
-
-function getCommits(count) {
-  return execSync('git log --pretty=format:"%s [%an]"')
-    .toString()
-    .trim()
-    .split('\n')
-    .slice(0, count)
-    .filter(line => !line.startsWith('Publish '))
-    .join('\n');
-}
-
-function main(count = '100') {
-  console.log(`Generating diff using last ${count} commits...`);
-  const randomTmpId = Math.random().toString().slice(2);
-  const dir = join(tmpdir(), 'now-diff' + randomTmpId);
-  mkdirSync(dir);
-
-  execSync('git checkout canary && git pull');
-  const canary = getCommits(count);
-  execSync('git checkout master && git pull');
-  const master = getCommits(count);
-
-  writeFileSync(join(dir, 'log.txt'), '# canary\n' + canary);
-  execSync('git init && git add -A && git commit -m "init"', { cwd: dir });
-  writeFileSync(join(dir, 'log.txt'), '# master\n' + master);
-
-  console.log(`Done generating diff. Run the following:`);
-  console.log(`cd ${dir}`);
-  console.log('Then use `git diff` or `git difftool` to view the differences.');
-}
-
-main(process.argv[2]);

errors/domain-verification.md

@@ -2,7 +2,7 @@
 
 #### Why This Error Occurred
 
-The domain you supplied cannot be verified using either the intended set of nameservers of the given verification TXT record.
+The domain you supplied cannot be verified using either the intended set of nameservers or the given verification TXT record.
 
 #### Possible Ways to Fix It
 

errors/invalid-token-value.md

@@ -0,0 +1,11 @@
+# Invalid Token Value
+
+#### Why This Error Occurred
+
+The `--token` flag was specified, but its contents are invalid.
+
+#### Possible Ways to Fix It
+
+The `--token` flag must only contain numbers (0-9) and letters from the alphabet (a-z and A-Z). This needs to be the token of the user account as which you'd like to act.
+
+You can either get the token from the `./now/auth.json` file located in your user directory or [from the dashboard](https://zeit.co/account/tokens).

errors/now-static-build-failed-to-detect-a-server.md

@@ -19,6 +19,8 @@ the provided `$PORT` that the builder expects the server to bind to.
 For example, if you are using Gatsby, your `now-dev` script must use the `-p`
 (port) option to bind to the `$PORT` specified from the builder:
 
+> *In Windows environments, reference the `PORT` environment variable with `%PORT%`*
+
 ```
 {
   ...

package.json

@@ -30,10 +30,9 @@
   "scripts": {
     "lerna": "lerna",
     "bootstrap": "lerna bootstrap",
-    "publish-stable": "git checkout master && git pull && lerna version --exact",
-    "publish-canary": "git checkout canary && git pull && lerna version prerelease --preid canary --exact",
+    "publish-stable": "echo 'Run `yarn changelog` for instructions'",
+    "publish-canary": "git pull && lerna version prerelease --preid canary --message 'Publish Canary' --exact",
     "publish-from-github": "./.circleci/publish.sh",
-    "diff": "node diff.js",
     "changelog": "node changelog.js",
     "build": "node run.js build all",
     "test-lint": "node run.js test-lint",
@@ -58,5 +57,8 @@
     "hooks": {
       "pre-commit": "lint-staged"
     }
+  },
+  "resolutions": {
+    "signal-exit": "TooTallNate/signal-exit#update/sighub-to-sigint-on-windows"
   }
 }

packages/gatsby-plugin-now/gatsby-node.js

@@ -16,7 +16,7 @@ exports.onPostBuild = async ({ store }) => {
     const route = {
       src: redirect.fromPath,
       status: redirect.statusCode || (redirect.isPermanent ? 301 : 302),
-      headers: { Location: redirect.toPath }
+      headers: { Location: redirect.toPath },
     };
 
     if (redirect.force) {

packages/gatsby-plugin-now/package.json

@@ -1,9 +1,9 @@
 {
   "name": "gatsby-plugin-now",
-  "version": "1.2.1-canary.1",
+  "version": "1.2.6-canary.0",
   "main": "index.js",
   "license": "MIT",
-  "homepage": "https://github.com/zeit/now/tree/canary/packages/gatsby-plugin-now#readme",
+  "homepage": "https://zeit.co/guides/deploying-gatsby-with-now",
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now.git",

packages/now-build-utils/.gitignore

@@ -1,3 +1,4 @@
+?.js
 dist
 test/symlinks-out
 test/symlinks.zip

packages/now-build-utils/build.sh

@@ -1,6 +1,12 @@
+#!/bin/sh
+set -eu
+out="dist"
+
+rm -rf "$out"
+
 tsc
 
-rm dist/index.js
-ncc build src/index.ts -o dist/main
-mv dist/main/index.js dist/index.js
-rm -rf dist/main
+rm "$out/index.js"
+ncc build "src/index.ts" -o "$out/main"
+mv "$out/main/index.js" "$out/index.js"
+rm -rf "$out/main"

packages/now-build-utils/jest.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  transform: {
+    '^.+\\.tsx?$': 'ts-jest',
+  },
+};

packages/now-build-utils/package.json

@@ -1,10 +1,10 @@
 {
   "name": "@now/build-utils",
-  "version": "1.0.0-canary.7",
+  "version": "1.2.0",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",
-  "homepage": "https://zeit.co/docs/v2/deployments/builders/developer-guide",
+  "homepage": "https://github.com/zeit/now/blob/master/DEVELOPING_A_RUNTIME.md",
   "repository": {
     "type": "git",
     "url": "https://github.com/zeit/now.git",
@@ -12,31 +12,39 @@
   },
   "scripts": {
     "build": "./build.sh",
-    "test-integration-once": "jest --env node --verbose --runInBand",
+    "test-unit": "jest --env node --verbose --runInBand test/unit.*test.*",
+    "test-integration-once": "jest --env node --verbose --runInBand test/integration.test.js",
     "prepublishOnly": "./build.sh"
   },
   "devDependencies": {
+    "@iarna/toml": "2.2.3",
     "@types/async-retry": "^1.2.1",
     "@types/cross-spawn": "6.0.0",
     "@types/end-of-stream": "^1.4.0",
     "@types/fs-extra": "^5.0.5",
     "@types/glob": "^7.1.1",
+    "@types/jest": "24.0.22",
+    "@types/js-yaml": "3.12.1",
     "@types/multistream": "2.1.1",
     "@types/node-fetch": "^2.1.6",
     "@types/semver": "6.0.0",
     "@types/yazl": "^2.4.1",
+    "aggregate-error": "3.0.1",
     "async-retry": "1.2.3",
     "async-sema": "2.1.4",
+    "boxen": "4.2.0",
     "cross-spawn": "6.0.5",
     "end-of-stream": "1.4.1",
-    "execa": "^1.0.0",
     "fs-extra": "7.0.0",
     "glob": "7.1.3",
     "into-stream": "5.0.0",
+    "jest": "24.9.0",
+    "js-yaml": "3.13.1",
     "minimatch": "3.0.4",
     "multistream": "2.1.1",
     "node-fetch": "2.2.0",
     "semver": "6.1.1",
+    "ts-jest": "24.1.0",
     "typescript": "3.5.2",
     "yazl": "2.4.3"
   }

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

@@ -1,7 +1,5 @@
 export default function debug(message: string, ...additional: any[]) {
   if (process.env.NOW_BUILDER_DEBUG) {
     console.log(message, ...additional);
-  } else if (process.env.NOW_BUILDER_ANNOTATE) {
-    console.log(`[now-builder-debug] ${message}`, ...additional);
   }
 }

packages/now-build-utils/src/detect-builders.ts

@@ -1,5 +1,12 @@
-import { PackageJson, Builder, Config } from './types';
 import minimatch from 'minimatch';
+import { valid as validSemver } from 'semver';
+import {
+  Builder,
+  Config,
+  BuilderFunctions,
+  DetectorResult,
+  DetectorOutput,
+} from './types';
 
 interface ErrorResponse {
   code: string;
@@ -8,81 +15,139 @@ interface ErrorResponse {
 
 interface Options {
   tag?: 'canary' | 'latest' | string;
-}
-
-const src = 'package.json';
-const config: Config = { zeroConfig: true };
-
-const MISSING_BUILD_SCRIPT_ERROR: ErrorResponse = {
-  code: 'missing_build_script',
-  message:
-    'Your `package.json` file is missing a `build` property inside the `script` property.' +
-    '\nMore details: https://zeit.co/docs/v2/advanced/platform/frequently-asked-questions#missing-build-script',
-};
-
-// Static builders are special cased in `@now/static-build`
-function getBuilders(): Map<string, Builder> {
-  return new Map<string, Builder>([
-    ['next', { src, use: '@now/next', config }],
-  ]);
+  functions?: BuilderFunctions;
 }
 
 // Must be a function to ensure that the returned
 // object won't be a reference
-function getApiBuilders(): Builder[] {
+function getApiBuilders({ tag }: Pick<Options, 'tag'> = {}): Builder[] {
+  const withTag = tag ? `@${tag}` : '';
+  const config = { zeroConfig: true };
+
   return [
-    { src: 'api/**/*.js', use: '@now/node', config },
-    { src: 'api/**/*.ts', use: '@now/node', config },
-    { src: 'api/**/*.go', use: '@now/go', config },
-    { src: 'api/**/*.py', use: '@now/python', config },
-    { src: 'api/**/*.rb', use: '@now/ruby', config },
+    { src: 'api/**/*.js', use: `@now/node${withTag}`, config },
+    { src: 'api/**/*.ts', use: `@now/node${withTag}`, config },
+    { src: 'api/**/*.go', use: `@now/go${withTag}`, config },
+    { src: 'api/**/*.py', use: `@now/python${withTag}`, config },
+    { src: 'api/**/*.rb', use: `@now/ruby${withTag}`, config },
   ];
 }
 
-function hasPublicDirectory(files: string[]) {
-  return files.some(name => name.startsWith('public/'));
+function hasDirectory(fileName: string, files: string[]) {
+  return files.some(name => name.startsWith(`${fileName}/`));
 }
 
-function hasBuildScript(pkg: PackageJson | undefined) {
-  const { scripts = {} } = pkg || {};
-  return Boolean(scripts && scripts['build']);
-}
+function getApiFunctionBuilder(
+  file: string,
+  prevBuilder: Builder | undefined,
+  { functions = {} }: Pick<Options, 'functions'>
+) {
+  const key = Object.keys(functions).find(
+    k => file === k || minimatch(file, k)
+  );
+  const fn = key ? functions[key] : undefined;
 
-async function detectBuilder(pkg: PackageJson): Promise<Builder> {
-  for (const [dependency, builder] of getBuilders()) {
-    const deps = Object.assign({}, pkg.dependencies, pkg.devDependencies);
-
-    // Return the builder when a dependency matches
-    if (deps[dependency]) {
-      return builder;
-    }
+  if (!fn || (!fn.runtime && !prevBuilder)) {
+    return prevBuilder;
   }
 
-  // By default we'll choose the `static-build` builder
-  return { src, use: '@now/static-build', config };
+  const src = (prevBuilder && prevBuilder.src) || file;
+  const use = fn.runtime || (prevBuilder && prevBuilder.use);
+
+  const config: Config = { zeroConfig: true };
+
+  if (key) {
+    Object.assign(config, {
+      functions: {
+        [key]: fn,
+      },
+    });
+  }
+
+  const { includeFiles, excludeFiles } = fn;
+
+  if (includeFiles) Object.assign(config, { includeFiles });
+  if (excludeFiles) Object.assign(config, { excludeFiles });
+
+  return use ? { use, src, config } : prevBuilder;
+}
+
+function detectFrontBuilder(
+  detectorResult: Partial<DetectorOutput>,
+  builders: Builder[],
+  options: Options
+): Builder {
+  const { tag } = options;
+  const withTag = tag ? `@${tag}` : '';
+
+  const { framework, buildCommand, outputDirectory } = detectorResult;
+
+  const frameworkSlug = framework ? framework.slug : null;
+
+  const config: Config = {
+    zeroConfig: true,
+  };
+
+  if (buildCommand) {
+    config.buildCommand = buildCommand;
+  }
+
+  if (outputDirectory) {
+    config.outputDirectory = outputDirectory;
+  }
+
+  // All unused functions will be used for the frontend
+  if (options.functions) {
+    Object.entries(options.functions).forEach(([key, func]) => {
+      if (
+        builders.every(
+          b => !(b.config && b.config.functions && b.config.functions[key])
+        )
+      ) {
+        config.functions = config.functions || {};
+        config.functions[key] = { ...func };
+      }
+    });
+  }
+
+  if (frameworkSlug === 'next') {
+    return { src: 'package.json', use: `@now/next${withTag}`, config };
+  }
+
+  return { src: 'package.json', use: `@now/static-build${withTag}`, config };
 }
 
 // Files that match a specific pattern will get ignored
-export function ignoreApiFilter(file: string) {
-  if (file.includes('/.')) {
-    return false;
+export function getIgnoreApiFilter(optionsOrBuilders: Options | Builder[]) {
+  const possiblePatterns: string[] = getApiBuilders().map(b => b.src);
+
+  if (Array.isArray(optionsOrBuilders)) {
+    optionsOrBuilders.forEach(({ src }) => possiblePatterns.push(src));
+  } else if (optionsOrBuilders.functions) {
+    Object.keys(optionsOrBuilders.functions).forEach(p =>
+      possiblePatterns.push(p)
+    );
   }
 
-  if (file.includes('/_')) {
-    return false;
-  }
+  return (file: string) => {
+    if (file.includes('/.')) {
+      return false;
+    }
 
-  if (file.endsWith('.d.ts')) {
-    return false;
-  }
+    if (file.includes('/_')) {
+      return false;
+    }
 
-  // If the file does not match any builder we also
-  // don't want to create a route e.g. `package.json`
-  if (getApiBuilders().every(({ src }) => !minimatch(file, src))) {
-    return false;
-  }
+    if (file.endsWith('.d.ts')) {
+      return false;
+    }
 
-  return true;
+    if (possiblePatterns.every(p => !(file === p || minimatch(file, p)))) {
+      return false;
+    }
+
+    return true;
+  };
 }
 
 // We need to sort the file paths by alphabet to make
@@ -91,34 +156,30 @@ export function sortFiles(fileA: string, fileB: string) {
   return fileA.localeCompare(fileB);
 }
 
-async function detectApiBuilders(files: string[]): Promise<Builder[]> {
+function detectApiBuilders(files: string[], options: Options): Builder[] {
   const builds = files
     .sort(sortFiles)
-    .filter(ignoreApiFilter)
+    .filter(getIgnoreApiFilter(options))
     .map(file => {
-      const result = getApiBuilders().find(({ src }): boolean =>
-        minimatch(file, src)
-      );
-
-      return result ? { ...result, src: file } : null;
+      const apiBuilders = getApiBuilders(options);
+      const apiBuilder = apiBuilders.find(b => minimatch(file, b.src));
+      const fnBuilder = getApiFunctionBuilder(file, apiBuilder, options);
+      return fnBuilder ? { ...fnBuilder, src: file } : null;
     });
 
-  const finishedBuilds = builds.filter(Boolean);
-  return finishedBuilds as Builder[];
+  return builds.filter(Boolean) as Builder[];
 }
 
 // When a package has files that conflict with `/api` routes
 // e.g. Next.js pages/api we'll check it here and return an error.
-async function checkConflictingFiles(
+function checkConflictingFiles(
   files: string[],
   builders: Builder[]
-): Promise<ErrorResponse | null> {
+): ErrorResponse | null {
   // For Next.js
-  if (builders.some(builder => builder.use.startsWith('@now/next'))) {
+  if (builders.some(b => b.use.startsWith('@now/next'))) {
     const hasApiPages = files.some(file => file.startsWith('pages/api/'));
-    const hasApiBuilders = builders.some(builder =>
-      builder.src.startsWith('api/')
-    );
+    const hasApiBuilders = builders.some(b => b.src.startsWith('api/'));
 
     if (hasApiPages && hasApiBuilders) {
       return {
@@ -132,12 +193,139 @@ async function checkConflictingFiles(
   return null;
 }
 
+// When e.g. Next.js receives a `functions` property it has to make sure,
+// that it can handle those files, otherwise there are unused functions.
+function checkUnusedFunctionsOnFrontendBuilder(
+  files: string[],
+  builder: Builder
+): ErrorResponse | null {
+  const { config: { functions = undefined } = {} } = builder;
+
+  if (!functions) return null;
+
+  if (builder.use.startsWith('@now/next')) {
+    const matchingFiles = files.filter(file =>
+      Object.keys(functions).some(key => file === key || minimatch(file, key))
+    );
+
+    for (const matchedFile of matchingFiles) {
+      if (
+        !matchedFile.startsWith('src/pages/') &&
+        !matchedFile.startsWith('pages/')
+      ) {
+        return {
+          code: 'unused_function',
+          message:
+            `The function for "${matchedFile}" can't be handled by any runtime. ` +
+            `Please provide one with the "runtime" option.`,
+        };
+      }
+    }
+  }
+
+  return null;
+}
+
+function validateFunctions(files: string[], { functions = {} }: Options) {
+  for (const [path, func] of Object.entries(functions)) {
+    if (path.length > 256) {
+      return {
+        code: 'invalid_function_glob',
+        message: 'Function globs must be less than 256 characters long.',
+      };
+    }
+
+    if (!func || typeof func !== 'object') {
+      return {
+        code: 'invalid_function',
+        message: 'Function must be an object.',
+      };
+    }
+
+    if (Object.keys(func).length === 0) {
+      return {
+        code: 'invalid_function',
+        message: 'Function must contain at least one property.',
+      };
+    }
+
+    if (
+      func.maxDuration !== undefined &&
+      (func.maxDuration < 1 ||
+        func.maxDuration > 900 ||
+        !Number.isInteger(func.maxDuration))
+    ) {
+      return {
+        code: 'invalid_function_duration',
+        message: 'Functions must have a duration between 1 and 900.',
+      };
+    }
+
+    if (
+      func.memory !== undefined &&
+      (func.memory < 128 || func.memory > 3008 || func.memory % 64 !== 0)
+    ) {
+      return {
+        code: 'invalid_function_memory',
+        message:
+          'Functions must have a memory value between 128 and 3008 in steps of 64.',
+      };
+    }
+
+    if (path.startsWith('/')) {
+      return {
+        code: 'invalid_function_source',
+        message: `The function path "${path}" is invalid. The path must be relative to your project root and therefore cannot start with a slash.`,
+      };
+    }
+
+    if (files.some(f => f === path || minimatch(f, path)) === false) {
+      return {
+        code: 'invalid_function_source',
+        message: `No source file matched the function for ${path}.`,
+      };
+    }
+
+    if (func.runtime !== undefined) {
+      const tag = `${func.runtime}`.split('@').pop();
+
+      if (!tag || !validSemver(tag)) {
+        return {
+          code: 'invalid_function_runtime',
+          message:
+            'Function Runtimes must have a valid version, for example `now-php@1.0.0`.',
+        };
+      }
+    }
+
+    if (func.includeFiles !== undefined) {
+      if (typeof func.includeFiles !== 'string') {
+        return {
+          code: 'invalid_function_property',
+          message: `The property \`includeFiles\` must be a string.`,
+        };
+      }
+    }
+
+    if (func.excludeFiles !== undefined) {
+      if (typeof func.excludeFiles !== 'string') {
+        return {
+          code: 'invalid_function_property',
+          message: `The property \`excludeFiles\` must be a string.`,
+        };
+      }
+    }
+  }
+
+  return null;
+}
+
 // When zero config is used we can call this function
 // to determine what builders to use
 export async function detectBuilders(
   files: string[],
-  pkg?: PackageJson | undefined | null,
-  options?: Options
+  detectorResult: Partial<DetectorResult> | null = null,
+  options: Options = {}
 ): Promise<{
   builders: Builder[] | null;
   errors: ErrorResponse[] | null;
@@ -146,66 +334,74 @@ export async function detectBuilders(
   const errors: ErrorResponse[] = [];
   const warnings: ErrorResponse[] = [];
 
+  const functionError = validateFunctions(files, options);
+
+  if (functionError) {
+    return {
+      builders: null,
+      errors: [functionError],
+      warnings,
+    };
+  }
+
   // Detect all builders for the `api` directory before anything else
-  let builders = await detectApiBuilders(files);
+  const builders = detectApiBuilders(files, options);
 
-  if (pkg && hasBuildScript(pkg)) {
-    builders.push(await detectBuilder(pkg));
+  if (detectorResult && detectorResult.buildCommand) {
+    const frontendBuilder = detectFrontBuilder(
+      detectorResult,
+      builders,
+      options
+    );
+    builders.push(frontendBuilder);
 
-    const conflictError = await checkConflictingFiles(files, builders);
+    const conflictError = checkConflictingFiles(files, builders);
 
     if (conflictError) {
       warnings.push(conflictError);
     }
-  } else {
-    if (pkg && builders.length === 0) {
-      // We only show this error when there are no api builders
-      // since the dependencies of the pkg could be used for those
-      errors.push(MISSING_BUILD_SCRIPT_ERROR);
-      return { errors, warnings, builders: null };
-    }
-
-    // We allow a `public` directory
-    // when there are no build steps
-    if (hasPublicDirectory(files)) {
-      builders.push({
-        use: '@now/static',
-        src: 'public/**/*',
-        config,
-      });
-    } else if (builders.length > 0) {
-      // We can't use pattern matching, since `!(api)` and `!(api)/**/*`
-      // won't give the correct results
-      builders.push(
-        ...files
-          .filter(name => !name.startsWith('api/'))
-          .filter(name => !(name === 'package.json'))
-          .map(name => ({
-            use: '@now/static',
-            src: name,
-            config,
-          }))
-      );
-    }
-  }
-
-  // Change the tag for the builders
-  if (builders && builders.length) {
-    const tag = options && options.tag;
-
-    if (tag) {
-      builders = builders.map((originBuilder: Builder) => {
-        // Copy builder to make sure it is not a reference
-        const builder = { ...originBuilder };
-
-        // @now/static has no canary builder
-        if (builder.use !== '@now/static') {
-          builder.use = `${builder.use}@${tag}`;
-        }
-
-        return builder;
-      });
+
+    const unusedFunctionError = checkUnusedFunctionsOnFrontendBuilder(
+      files,
+      frontendBuilder
+    );
+
+    if (unusedFunctionError) {
+      return {
+        builders: null,
+        errors: [unusedFunctionError],
+        warnings,
+      };
     }
+  } else if (
+    detectorResult &&
+    detectorResult.outputDirectory &&
+    hasDirectory(detectorResult.outputDirectory, files)
+  ) {
+    builders.push({
+      use: '@now/static',
+      src: [...detectorResult.outputDirectory.split('/'), '**', '*']
+        .filter(Boolean)
+        .join('/'),
+      config: { zeroConfig: true },
+    });
+  } else if (hasDirectory('public', files)) {
+    builders.push({
+      use: '@now/static',
+      src: 'public/**/*',
+      config: { zeroConfig: true },
+    });
+  } else if (
+    builders.length > 0 &&
+    files.some(f => !f.startsWith('api/') && f !== 'package.json')
+  ) {
+    // Everything besides the api directory
+    // and package.json can be served as static files
+    builders.push({
+      use: '@now/static',
+      src: '!{api/**,package.json}',
+      config: { zeroConfig: true },
+    });
   }
 
   return {

packages/now-build-utils/src/detect-routes.ts

@@ -1,6 +1,6 @@
-import { Route, Builder } from './types';
 import { parse as parsePath } from 'path';
-import { ignoreApiFilter, sortFiles } from './detect-builders';
+import { Route, Builder } from './types';
+import { getIgnoreApiFilter, sortFiles } from './detect-builders';
 
 function escapeName(name: string) {
   const special = '[]^$.|?*+()'.split('');
@@ -60,9 +60,9 @@ function createRouteFromPath(filePath: string): Route {
       const prefix = isIndex ? '\\/' : '';
 
       const names = [
-        prefix,
+        isIndex ? prefix : `${fileName}\\/`,
         prefix + escapeName(fileName),
-        prefix + escapeName(fileName) + escapeName(ext)
+        prefix + escapeName(fileName) + escapeName(ext),
       ].filter(Boolean);
 
       // Either filename with extension, filename without extension
@@ -118,7 +118,7 @@ function partiallyMatches(pathA: string, pathB: string): boolean {
   return false;
 }
 
-// Counts how often a path occurres when all placeholders
+// Counts how often a path occurs when all placeholders
 // got resolved, so we can check if they have conflicts
 function pathOccurrences(filePath: string, files: string[]): string[] {
   const getAbsolutePath = (unresolvedPath: string): string => {
@@ -197,7 +197,10 @@ interface RoutesResult {
   error: { [key: string]: string } | null;
 }
 
-async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
+async function detectApiRoutes(
+  files: string[],
+  builders: Builder[]
+): Promise<RoutesResult> {
   if (!files || files.length === 0) {
     return { defaultRoutes: null, error: null };
   }
@@ -205,7 +208,7 @@ async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
   // The deepest routes need to be
   // the first ones to get handled
   const sortedFiles = files
-    .filter(ignoreApiFilter)
+    .filter(getIgnoreApiFilter(builders))
     .sort(sortFiles)
     .sort(sortFilesBySegmentCount);
 
@@ -214,7 +217,10 @@ async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
   for (const file of sortedFiles) {
     // We only consider every file in the api directory
     // as we will strip extensions as well as resolving "[segments]"
-    if (!file.startsWith('api/')) {
+    if (
+      !file.startsWith('api/') &&
+      !builders.some(b => b.src === file && b.config!.functions)
+    ) {
       continue;
     }
 
@@ -226,10 +232,10 @@ async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
         error: {
           code: 'conflicting_path_segment',
           message:
-            `The segment "${conflictingSegment}" occurres more than ` +
+            `The segment "${conflictingSegment}" occurs more than ` +
             `one time in your path "${file}". Please make sure that ` +
-            `every segment in a path is unique`
-        }
+            `every segment in a path is unique`,
+        },
       };
     }
 
@@ -249,8 +255,8 @@ async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
           message:
             `Two or more files have conflicting paths or names. ` +
             `Please make sure path segments and filenames, without their extension, are unique. ` +
-            `The path "${file}" has conflicts with ${messagePaths}`
-        }
+            `The path "${file}" has conflicts with ${messagePaths}`,
+        },
       };
     }
 
@@ -261,33 +267,38 @@ async function detectApiRoutes(files: string[]): Promise<RoutesResult> {
   if (defaultRoutes.length) {
     defaultRoutes.push({
       status: 404,
-      src: '/api(\\/.*)?$'
+      src: '/api(\\/.*)?$',
     });
   }
 
   return { defaultRoutes, error: null };
 }
 
-function hasPublicBuilder(builders: Builder[]): boolean {
-  return builders.some(
+function getPublicBuilder(builders: Builder[]): Builder | null {
+  const builder = builders.find(
     builder =>
       builder.use === '@now/static' &&
-      builder.src === 'public/**/*' &&
+      /^.*\/\*\*\/\*$/.test(builder.src) &&
       builder.config &&
       builder.config.zeroConfig === true
   );
+
+  return builder || null;
 }
 
 export async function detectRoutes(
   files: string[],
   builders: Builder[]
 ): Promise<RoutesResult> {
-  const routesResult = await detectApiRoutes(files);
+  const routesResult = await detectApiRoutes(files, builders);
+  const publicBuilder = getPublicBuilder(builders);
+
+  if (routesResult.defaultRoutes && publicBuilder) {
+    const directory = publicBuilder.src.replace('/**/*', '');
 
-  if (routesResult.defaultRoutes && hasPublicBuilder(builders)) {
     routesResult.defaultRoutes.push({
       src: '/(.*)',
-      dest: '/public/$1'
+      dest: `/${directory}/$1`,
     });
   }
 

packages/now-build-utils/src/detectors/angular.ts

@@ -0,0 +1,27 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectAngular({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('@angular/cli');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'ng build',
+    outputDirectory: 'dist',
+    devCommand: 'ng serve --port $PORT',
+    framework: {
+      slug: '@angular/cli',
+      version,
+    },
+    minNodeRange: '10.x',
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/brunch.ts

@@ -0,0 +1,22 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectBrunch({
+  fs: { exists, getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('brunch');
+  if (!version) return false;
+
+  const hasConfig = await exists('brunch-config.js');
+  if (!hasConfig) return false;
+
+  return {
+    buildCommand:
+      (await getPackageJsonBuildCommand()) || 'brunch build --production',
+    outputDirectory: 'public',
+    devCommand: 'brunch watch --server --port $PORT',
+    framework: {
+      slug: 'brunch',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/create-react-app-ejected.ts

@@ -0,0 +1,44 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectCreateReactAppEjected({
+  fs: { getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('react-dev-utils');
+  if (!version) {
+    return false;
+  }
+  return {
+    buildCommand: 'node scripts/build.js',
+    outputDirectory: 'build',
+    devCommand: 'node scripts/start.js',
+    framework: {
+      slug: 'react-dev-utils',
+      version,
+    },
+    devVariables: { BROWSER: 'none' },
+    routes: [
+      {
+        src: '/static/(.*)',
+        headers: { 'cache-control': 's-maxage=31536000, immutable' },
+        continue: true,
+      },
+      {
+        src: '/service-worker.js',
+        headers: { 'cache-control': 's-maxage=0' },
+        continue: true,
+      },
+      {
+        src: '/sockjs-node/(.*)',
+        dest: '/sockjs-node/$1',
+      },
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        headers: { 'cache-control': 's-maxage=0' },
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/create-react-app.ts

@@ -0,0 +1,44 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectCreateReactApp({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('react-scripts');
+  if (!version) {
+    return false;
+  }
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'react-scripts build',
+    outputDirectory: 'build',
+    devCommand: 'react-scripts start',
+    devVariables: { BROWSER: 'none' },
+    framework: {
+      slug: 'react-scripts',
+      version,
+    },
+    routes: [
+      {
+        src: '/static/(.*)',
+        headers: { 'cache-control': 's-maxage=31536000, immutable' },
+        continue: true,
+      },
+      {
+        src: '/service-worker.js',
+        headers: { 'cache-control': 's-maxage=0' },
+        continue: true,
+      },
+      {
+        src: '/sockjs-node/(.*)',
+        dest: '/sockjs-node/$1',
+      },
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        headers: { 'cache-control': 's-maxage=0' },
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/docusaurus.ts

@@ -0,0 +1,17 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectDocusaurus({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('docusaurus');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'docusaurus-build',
+    outputDirectory: 'build',
+    devCommand: 'docusaurus-start --port $PORT',
+    framework: {
+      slug: 'docusaurus',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/eleventy.ts

@@ -0,0 +1,17 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectEleventy({
+  fs: { getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('@11ty/eleventy');
+  if (!version) return false;
+  return {
+    buildCommand: 'npx @11ty/eleventy',
+    outputDirectory: '_site',
+    devCommand: 'npx @11ty/eleventy --serve --watch --port $PORT',
+    framework: {
+      slug: '@11ty/eleventy',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/ember.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectEmber({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('ember-cli');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'ember build',
+    outputDirectory: 'dist',
+    devCommand: 'ember serve --port $PORT',
+    framework: {
+      slug: 'ember-cli',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/filesystem.ts

@@ -0,0 +1,141 @@
+import yaml from 'js-yaml';
+import toml from '@iarna/toml';
+import { PackageJson } from '../types';
+
+/**
+ * `DetectorFilesystem` is an abstract class that represents a virtual filesystem
+ * to perform read-only operations on in order to detect which framework is being
+ * used.
+ *
+ * Its abstract methods must be implemented by a subclass that perform the actual
+ * FS operations. Example subclasses could be implemented as:
+ *
+ *  - Local filesystem, which proxies the FS operations to the equivalent `fs`
+ *    module functions.
+ *  - HTTP filesystem, which implements the FS operations over an HTTP server
+ *    and does not require a local copy of the files.
+ *  - `Files` filesystem, which operates on a virtual `Files` object (i.e. from
+ *    the `glob()` function) which could include `FileFsRef`, `FileBlob`, etc.
+ *
+ * This base class implements various helper functions for common tasks (i.e.
+ * read and parse a JSON file). It also includes caching for all FS operations
+ * so that multiple detector functions de-dup read operations on the same file
+ * to reduce network/filesystem overhead.
+ *
+ * **NOTE:** It's important that all instance methods in this base class are
+ * bound to `this` so that the `fs` object may be destructured in the detector
+ * functions. The easiest way to do this is to use the `=` syntax when defining
+ * methods in this class definition.
+ */
+export default abstract class DetectorFilesystem {
+  protected abstract _readFile(name: string): Promise<Buffer>;
+  protected abstract _exists(name: string): Promise<boolean>;
+
+  private existsCache: Map<string, Promise<boolean>>;
+  private readFileCache: Map<string, Promise<Buffer>>;
+  private readJsonCache: Map<string, Promise<any>>;
+
+  constructor() {
+    this.existsCache = new Map();
+    this.readFileCache = new Map();
+    this.readJsonCache = new Map();
+  }
+
+  public exists = async (name: string): Promise<boolean> => {
+    let p = this.existsCache.get(name);
+    if (!p) {
+      p = this._exists(name);
+      this.existsCache.set(name, p);
+    }
+    return p;
+  };
+
+  public readFile = async (name: string): Promise<Buffer> => {
+    let p = this.readFileCache.get(name);
+    if (!p) {
+      p = this._readFile(name);
+      this.readFileCache.set(name, p);
+    }
+    return p;
+  };
+
+  public readJson = async <T>(name: string): Promise<T> => {
+    let p = this.readJsonCache.get(name);
+    if (!p) {
+      p = this.readFile(name).then(d => JSON.parse(d.toString('utf8')));
+      this.readJsonCache.set(name, p);
+    }
+    return p;
+  };
+
+  public readFileOrNull = async (name: string): Promise<Buffer | null> => {
+    return nullEnoent(this.readFile(name));
+  };
+
+  public readJsonOrNull = async <T>(name: string): Promise<T | null> => {
+    return nullEnoent(this.readJson<T>(name));
+  };
+
+  public readPackageJson = async (): Promise<PackageJson | null> => {
+    return await this.readJsonOrNull<PackageJson>('package.json');
+  };
+
+  public readConfigFile = async <T>(...names: string[]): Promise<T | null> => {
+    for (const name of names) {
+      const data = await this.readFileOrNull(name);
+      if (data) {
+        const str = data.toString('utf8');
+        if (name.endsWith('.json')) {
+          return JSON.parse(str);
+        } else if (name.endsWith('.toml')) {
+          return (toml.parse(str) as unknown) as T;
+        } else if (name.endsWith('.yaml') || name.endsWith('.yml')) {
+          return yaml.safeLoad(str, { filename: name });
+        }
+      }
+    }
+    return null;
+  };
+
+  public hasDependency = async (name: string): Promise<boolean> => {
+    const pkg = await this.readPackageJson();
+    const { dependencies = {}, devDependencies = {} } = pkg || {};
+    return name in dependencies || name in devDependencies;
+  };
+
+  public isNpm = async (): Promise<boolean> => {
+    return this.exists('package-lock.json');
+  };
+
+  public getPackageJsonCommand = async (
+    name: string
+  ): Promise<string | null> => {
+    const pkg = await this.readPackageJson();
+    const { scripts = {} } = pkg || {};
+    return scripts[name] || null;
+  };
+
+  public getPackageJsonBuildCommand = async (): Promise<string | null> => {
+    const buildCommand = (await this.isNpm())
+      ? 'npm run build'
+      : 'yarn run build';
+    return (await this.getPackageJsonCommand('build')) ? buildCommand : null;
+  };
+
+  public getDependencyVersion = async (name: string): Promise<string> => {
+    const pkg = await this.readPackageJson();
+    const { dependencies = {}, devDependencies = {} } = pkg || {};
+    return dependencies[name] || devDependencies[name];
+  };
+}
+
+async function nullEnoent<T>(p: Promise<T>): Promise<T | null> {
+  try {
+    return await p;
+  } catch (err) {
+    if (err.code === 'ENOENT') {
+      return null;
+    }
+    throw err;
+  }
+}

packages/now-build-utils/src/detectors/gatsby.ts

@@ -0,0 +1,20 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectGatsby({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('gatsby');
+  if (!version) {
+    return false;
+  }
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'gatsby build',
+    outputDirectory: 'public',
+    devCommand: 'gatsby develop -p $PORT',
+    framework: {
+      slug: 'gatsby',
+      version,
+    },
+    cachePattern: '.cache/**',
+  };
+}

packages/now-build-utils/src/detectors/generic-node-project.ts

@@ -0,0 +1,21 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectGenericNodeProject({
+  fs: { isNpm, getPackageJsonCommand },
+}: DetectorParameters): Promise<DetectorResult> {
+  const useNpm = await isNpm();
+  const devCommand = await getPackageJsonCommand('dev');
+  const buildCommand = await getPackageJsonCommand('build');
+
+  if (!buildCommand) {
+    return false;
+  }
+
+  return {
+    buildCommand: `${useNpm ? 'npm' : 'yarn'} run build`,
+    devCommand: `${useNpm ? 'npm' : 'yarn'} run ${
+      devCommand ? 'dev' : 'build'
+    }`,
+    outputDirectory: 'public',
+  };
+}

packages/now-build-utils/src/detectors/gridsome.ts

@@ -0,0 +1,19 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectGridsome({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('gridsome');
+  if (!version) {
+    return false;
+  }
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'gridsome build',
+    outputDirectory: 'dist',
+    devCommand: 'gridsome develop -p $PORT',
+    framework: {
+      slug: 'gridsom',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/hexo.ts

@@ -0,0 +1,17 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectHexo({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('hexo');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'hexo generate',
+    outputDirectory: 'public',
+    devCommand: 'hexo server --port $PORT',
+    framework: {
+      slug: 'hexo',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/hugo.ts

@@ -0,0 +1,30 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+/**
+ * https://gohugo.io/getting-started/configuration/#configuration-file
+ */
+interface HugoConfig {
+  publishDir?: string;
+}
+
+export default async function detectHugo({
+  fs: { readConfigFile },
+}: DetectorParameters): Promise<DetectorResult> {
+  const config = await readConfigFile<HugoConfig>(
+    'config.toml',
+    'config.yaml',
+    'config.json'
+  );
+  if (!config) {
+    return false;
+  }
+  return {
+    buildCommand: 'hugo',
+    outputDirectory: config.publishDir || 'public',
+    devCommand: 'hugo server -D -w -p $PORT',
+    framework: {
+      slug: 'hugo',
+      version: 'latest',
+    },
+  };
+}

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

@@ -0,0 +1,89 @@
+import AggregateError from 'aggregate-error';
+import { Detector, DetectorParameters, DetectorResult } from '../types';
+
+import angular from './angular';
+import brunch from './brunch';
+import createReactApp from './create-react-app';
+import createReactAppEjected from './create-react-app-ejected';
+import docusaurus from './docusaurus';
+import eleventy from './eleventy';
+import ember from './ember';
+import gatsby from './gatsby';
+import genericNodeProject from './generic-node-project';
+import gridsome from './gridsome';
+import hexo from './hexo';
+import hugo from './hugo';
+import jekyll from './jekyll';
+import middleman from './middleman';
+import next from './next';
+import polymer from './polymer';
+import preact from './preact';
+import saber from './saber';
+import sapper from './sapper';
+import stencil from './stencil';
+import svelte from './svelte';
+import umi from './umi';
+import vue from './vue';
+
+export const pkgDetectors: Detector[] = [
+  angular,
+  brunch,
+  createReactApp,
+  createReactAppEjected,
+  docusaurus,
+  eleventy,
+  ember,
+  gatsby,
+  gridsome,
+  hexo,
+  next,
+  polymer,
+  preact,
+  saber,
+  sapper,
+  stencil,
+  svelte,
+  umi,
+  vue,
+];
+
+export const detectors: Detector[] = [hugo, jekyll, middleman];
+
+export function firstTruthy<T>(promises: Promise<T>[]) {
+  return new Promise<T>((resolve, reject) => {
+    const errors: Array<Error> = [];
+    let unresolved = promises.length;
+    for (const p of promises) {
+      p.then(v => {
+        if (v || --unresolved === 0) {
+          resolve(v);
+        }
+      }).catch(err => {
+        errors.push(err);
+        if (--unresolved === 0) {
+          reject(new AggregateError(errors));
+        }
+      });
+    }
+  });
+}
+
+export async function detectDefaults(
+  params: DetectorParameters
+): Promise<DetectorResult> {
+  // The `package.json` detectors are run first, since they share the common
+  // file read of `package.json` and are the most popular frameworks
+  let d: Detector[] = params.pkgDetectors || pkgDetectors;
+  let result: DetectorResult = await firstTruthy(
+    d.map(detector => detector(params))
+  );
+  if (!result) {
+    // If no `package.json` framework was detected then check the non-pkg ones
+    d = params.detectors || detectors;
+    result = await firstTruthy(d.map(detector => detector(params)));
+  }
+  if (!result) {
+    result = await genericNodeProject(params);
+  }
+  return result;
+}

packages/now-build-utils/src/detectors/jekyll.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+/**
+ * https://jekyllrb.com/docs/configuration/options/
+ */
+interface JekyllConfig {
+  destination?: string;
+}
+
+export default async function detectJekyll({
+  fs: { readConfigFile },
+}: DetectorParameters): Promise<DetectorResult> {
+  const config = await readConfigFile<JekyllConfig>('_config.yml');
+  if (!config) {
+    return false;
+  }
+  return {
+    buildCommand: 'jekyll build',
+    outputDirectory: config.destination || '_site',
+    devCommand: 'bundle exec jekyll serve --watch --port $PORT',
+    framework: {
+      slug: 'jekyll',
+      version: 'latest',
+    },
+  };
+}

packages/now-build-utils/src/detectors/middleman.ts

@@ -0,0 +1,18 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectMiddleman({
+  fs: { exists },
+}: DetectorParameters): Promise<DetectorResult> {
+  const hasConfig = await exists('config.rb');
+  if (!hasConfig) return false;
+
+  return {
+    buildCommand: 'bundle exec middleman build',
+    outputDirectory: 'build',
+    devCommand: 'bundle exec middleman server -p $PORT',
+    framework: {
+      slug: 'middleman',
+      version: 'latest',
+    },
+  };
+}

packages/now-build-utils/src/detectors/next.ts

@@ -0,0 +1,17 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectNext({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('next');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'next build',
+    outputDirectory: '.next/static',
+    devCommand: 'next -p $PORT',
+    framework: {
+      slug: 'next',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/polymer.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectPolymer({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('polymer-cli');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'polymer build',
+    outputDirectory: 'build',
+    devCommand: 'polymer serve --port $PORT',
+    framework: {
+      slug: 'polymer-cli',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/preact.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectPreact({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('preact-cli');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'preact build',
+    outputDirectory: 'build',
+    devCommand: 'preact watch --port $PORT',
+    framework: {
+      slug: 'preact-cli',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/saber.ts

@@ -0,0 +1,31 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectSaber({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('saber');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'saber build',
+    outputDirectory: 'public',
+    devCommand: 'saber --port $PORT',
+    routes: [
+      {
+        src: '/_saber/.*',
+        headers: { 'cache-control': 'max-age=31536000, immutable' },
+      },
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '.*',
+        status: 404,
+        dest: '404.html',
+      },
+    ],
+    framework: {
+      slug: 'saber',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/sapper.ts

@@ -0,0 +1,17 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectSapper({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('sapper');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'sapper export',
+    outputDirectory: '__sapper__/export',
+    devCommand: 'sapper dev --port $PORT',
+    framework: {
+      slug: 'sapper',
+      version,
+    },
+  };
+}

packages/now-build-utils/src/detectors/stencil.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectStencil({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('@stencil/core');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'stencil build',
+    outputDirectory: 'www',
+    devCommand: 'stencil build --dev --watch --serve --port $PORT',
+    framework: {
+      slug: '@stencil/core',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/svelte.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectSvelte({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('sirv-cli');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'rollup -c',
+    outputDirectory: 'public',
+    devCommand: 'sirv public --single --dev --port $PORT',
+    framework: {
+      slug: 'sirv-cli',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/umi.ts

@@ -0,0 +1,26 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectUmiJS({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('umi');
+  if (!version) return false;
+  return {
+    buildCommand: (await getPackageJsonBuildCommand()) || 'umi build',
+    outputDirectory: 'dist',
+    devCommand: 'umi dev --port $PORT',
+    framework: {
+      slug: 'umi',
+      version,
+    },
+    routes: [
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '/(.*)',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

packages/now-build-utils/src/detectors/vue.ts

@@ -0,0 +1,37 @@
+import { DetectorParameters, DetectorResult } from '../types';
+
+export default async function detectVue({
+  fs: { getPackageJsonBuildCommand, getDependencyVersion },
+}: DetectorParameters): Promise<DetectorResult> {
+  const version = await getDependencyVersion('@vue/cli-service');
+  if (!version) return false;
+  return {
+    buildCommand:
+      (await getPackageJsonBuildCommand()) || 'vue-cli-service build',
+    outputDirectory: 'dist',
+    devCommand: 'vue-cli-service serve --port $PORT',
+    framework: {
+      slug: '@vue/cli-service',
+      version,
+    },
+    routes: [
+      {
+        src: '^/[^/]*\\.(js|txt|ico|json)',
+        headers: { 'cache-control': 'max-age=300' },
+        continue: true,
+      },
+      {
+        src: '^/(img|js|css|fonts|media)/.*',
+        headers: { 'cache-control': 'max-age=31536000, immutable' },
+        continue: true,
+      },
+      {
+        handle: 'filesystem',
+      },
+      {
+        src: '^.*',
+        dest: '/index.html',
+      },
+    ],
+  };
+}

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

@@ -4,11 +4,13 @@ import { File } from './types';
 
 interface FileBlobOptions {
   mode?: number;
+  contentType?: string;
   data: string | Buffer;
 }
 
 interface FromStreamOptions {
   mode?: number;
+  contentType?: string;
   stream: NodeJS.ReadableStream;
 }
 
@@ -16,16 +18,22 @@ export default class FileBlob implements File {
   public type: 'FileBlob';
   public mode: number;
   public data: string | Buffer;
+  public contentType: string | undefined;
 
-  constructor({ mode = 0o100644, data }: FileBlobOptions) {
+  constructor({ mode = 0o100644, contentType, data }: FileBlobOptions) {
     assert(typeof mode === 'number');
     assert(typeof data === 'string' || Buffer.isBuffer(data));
     this.type = 'FileBlob';
     this.mode = mode;
+    this.contentType = contentType;
     this.data = data;
   }
 
-  static async fromStream({ mode = 0o100644, stream }: FromStreamOptions) {
+  static async fromStream({
+    mode = 0o100644,
+    contentType,
+    stream,
+  }: FromStreamOptions) {
     assert(typeof mode === 'number');
     assert(typeof stream.pipe === 'function'); // is-stream
     const chunks: Buffer[] = [];
@@ -37,7 +45,7 @@ export default class FileBlob implements File {
     });
 
     const data = Buffer.concat(chunks);
-    return new FileBlob({ mode, data });
+    return new FileBlob({ mode, contentType, data });
   }
 
   toStream(): NodeJS.ReadableStream {

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

@@ -9,11 +9,13 @@ const semaToPreventEMFILE = new Sema(20);
 
 interface FileFsRefOptions {
   mode?: number;
+  contentType?: string;
   fsPath: string;
 }
 
 interface FromStreamOptions {
   mode: number;
+  contentType?: string;
   stream: NodeJS.ReadableStream;
   fsPath: string;
 }
@@ -22,17 +24,20 @@ class FileFsRef implements File {
   public type: 'FileFsRef';
   public mode: number;
   public fsPath: string;
+  public contentType: string | undefined;
 
-  constructor({ mode = 0o100644, fsPath }: FileFsRefOptions) {
+  constructor({ mode = 0o100644, contentType, fsPath }: FileFsRefOptions) {
     assert(typeof mode === 'number');
     assert(typeof fsPath === 'string');
     this.type = 'FileFsRef';
     this.mode = mode;
+    this.contentType = contentType;
     this.fsPath = fsPath;
   }
 
   static async fromFsPath({
     mode,
+    contentType,
     fsPath,
   }: FileFsRefOptions): Promise<FileFsRef> {
     let m = mode;
@@ -40,11 +45,12 @@ class FileFsRef implements File {
       const stat = await fs.lstat(fsPath);
       m = stat.mode;
     }
-    return new FileFsRef({ mode: m, fsPath });
+    return new FileFsRef({ mode: m, contentType, fsPath });
   }
 
   static async fromStream({
     mode = 0o100644,
+    contentType,
     stream,
     fsPath,
   }: FromStreamOptions): Promise<FileFsRef> {
@@ -63,7 +69,7 @@ class FileFsRef implements File {
       dest.on('error', reject);
     });
 
-    return new FileFsRef({ mode, fsPath });
+    return new FileFsRef({ mode, contentType, fsPath });
   }
 
   async toStreamAsync(): Promise<NodeJS.ReadableStream> {

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

@@ -8,6 +8,7 @@ import { File } from './types';
 interface FileRefOptions {
   mode?: number;
   digest: string;
+  contentType?: string;
   mutable?: boolean;
 }
 
@@ -26,14 +27,21 @@ export default class FileRef implements File {
   public type: 'FileRef';
   public mode: number;
   public digest: string;
+  public contentType: string | undefined;
   private mutable: boolean;
 
-  constructor({ mode = 0o100644, digest, mutable = false }: FileRefOptions) {
+  constructor({
+    mode = 0o100644,
+    digest,
+    contentType,
+    mutable = false,
+  }: FileRefOptions) {
     assert(typeof mode === 'number');
     assert(typeof digest === 'string');
     this.type = 'FileRef';
     this.mode = mode;
     this.digest = digest;
+    this.contentType = contentType;
     this.mutable = mutable;
   }
 

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

@@ -1,4 +1,5 @@
 import path from 'path';
+import debug from '../debug';
 import FileFsRef from '../file-fs-ref';
 import { File, Files, Meta } from '../types';
 import { remove, mkdirp, readlink, symlink } from 'fs-extra';
@@ -39,8 +40,12 @@ export default async function download(
   basePath: string,
   meta?: Meta
 ): Promise<DownloadedFiles> {
-  const { isDev = false, skipDownload = false, filesChanged = null, filesRemoved = null } =
-    meta || {};
+  const {
+    isDev = false,
+    skipDownload = false,
+    filesChanged = null,
+    filesRemoved = null,
+  } = meta || {};
 
   if (isDev || skipDownload) {
     // In `now dev`, the `download()` function is a no-op because
@@ -48,11 +53,14 @@ export default async function download(
     // source files are already available.
     return files as DownloadedFiles;
   }
+  debug('Downloading deployment source files...');
 
+  const start = Date.now();
   const files2: DownloadedFiles = {};
+  const filenames = Object.keys(files);
 
   await Promise.all(
-    Object.keys(files).map(async name => {
+    filenames.map(async name => {
       // If the file does not exist anymore, remove it.
       if (Array.isArray(filesRemoved) && filesRemoved.includes(name)) {
         await removeFile(basePath, name);
@@ -71,5 +79,8 @@ export default async function download(
     })
   );
 
+  const duration = Date.now() - start;
+  debug(`Downloaded ${filenames.length} source files: ${duration}ms`);
+
   return files2;
 }

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

@@ -1,12 +1,21 @@
 import { intersects } from 'semver';
+import boxen from 'boxen';
 import { NodeVersion } from '../types';
 import debug from '../debug';
 
-const supportedOptions: NodeVersion[] = [
+const allOptions: NodeVersion[] = [
+  { major: 12, range: '12.x', runtime: 'nodejs12.x' },
   { major: 10, range: '10.x', runtime: 'nodejs10.x' },
-  { major: 8, range: '8.10.x', runtime: 'nodejs8.10' },
+  {
+    major: 8,
+    range: '8.10.x',
+    runtime: 'nodejs8.10',
+    discontinueDate: new Date('2020-01-06'),
+  },
 ];
 
+const supportedOptions = allOptions.filter(o => !isDiscontinued(o));
+
 // This version should match Fargate's default in the PATH
 // Today that is Node 8
 export const defaultSelection = supportedOptions.find(
@@ -22,18 +31,19 @@ export async function getSupportedNodeVersion(
   if (!engineRange) {
     if (!silent) {
       debug(
-        'missing `engines` in `package.json`, using default range: ' +
+        'Missing `engines` in `package.json`, using default range: ' +
           selection.range
       );
     }
   } else {
-    const found = supportedOptions.some(o => {
+    const found = allOptions.some(o => {
       // the array is already in order so return the first
       // match which will be the newest version of node
       selection = o;
       return intersects(o.range, engineRange);
     });
-    if (found) {
+    const discontinued = isDiscontinued(selection);
+    if (found && !discontinued) {
       if (!silent) {
         debug(
           'Found `engines` in `package.json`, selecting range: ' +
@@ -41,14 +51,50 @@ export async function getSupportedNodeVersion(
         );
       }
     } else {
-      if (!silent) {
-        throw new Error(
-          'found `engines` in `package.json` with an unsupported node range: ' +
-            engineRange +
-            '\nplease use `10.x` or `8.10.x` instead'
-        );
-      }
+      throw new Error(
+        'Found `engines` in `package.json` with an unsupported Node.js version range: ' +
+          engineRange +
+          '\nPlease use one of the following supported ranges: ' +
+          JSON.stringify(supportedOptions.map(o => o.range)) +
+          (discontinued
+            ? '\nThis change is the result of a decision made by an upstream infrastructure provider (AWS).' +
+              '\nRead more: https://docs.aws.amazon.com/lambda/latest/dg/runtime-support-policy.html'
+            : '')
+      );
     }
   }
+
+  const { range, discontinueDate } = selection;
+  if (discontinueDate && !isDiscontinued(selection)) {
+    const d = discontinueDate.toISOString().split('T')[0];
+    const validRanges = supportedOptions
+      .filter(o => !o.discontinueDate)
+      .map(o => o.range);
+    const prevTerm = process.env.TERM;
+    if (!prevTerm) {
+      // workaround for https://github.com/sindresorhus/term-size/issues/13
+      process.env.TERM = 'xterm';
+    }
+    console.warn(
+      boxen(
+        'NOTICE' +
+          '\n' +
+          `\nNode.js version ${range} has reached end-of-life.` +
+          `\nAs a result, deployments created on or after ${d} will fail to build.` +
+          '\nPlease use one of the following supported `engines` in `package.json`: ' +
+          JSON.stringify(validRanges) +
+          '\nThis change is the result of a decision made by an upstream infrastructure provider (AWS).' +
+          '\nRead more: https://docs.aws.amazon.com/lambda/latest/dg/runtime-support-policy.html',
+        { padding: 1 }
+      )
+    );
+    process.env.TERM = prevTerm;
+  }
+
   return selection;
 }
+
+function isDiscontinued({ discontinueDate }: NodeVersion): boolean {
+  const today = new Date();
+  return discontinueDate !== undefined && discontinueDate <= today;
+}

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

@@ -155,7 +155,7 @@ export async function runNpmInstall(
     commandArgs = args.filter(a => a !== '--prefer-offline');
     await spawnAsync(
       'npm',
-      commandArgs.concat(['install', '--unsafe-perm']),
+      commandArgs.concat(['install', '--no-audit', '--unsafe-perm']),
       opts
     );
   } else {
@@ -247,7 +247,11 @@ export async function runPackageJsonScript(
     await spawnAsync('npm', ['run', scriptName], opts);
   } else {
     console.log(`Running "yarn run ${scriptName}"`);
-    await spawnAsync('yarn', ['--cwd', destPath, 'run', scriptName], opts);
+    await spawnAsync(
+      'yarn',
+      ['--ignore-engines', '--cwd', destPath, 'run', scriptName],
+      opts
+    );
   }
 
   return true;

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

@@ -1,9 +1,9 @@
 import FileBlob from './file-blob';
 import FileFsRef from './file-fs-ref';
 import FileRef from './file-ref';
-import { Lambda, createLambda } from './lambda';
-import { Prerender, PrerenderGroup } from './prerender';
-import download, { DownloadedFiles } from './fs/download';
+import { Lambda, createLambda, getLambdaOptionsFromFunction } from './lambda';
+import { Prerender } from './prerender';
+import download, { DownloadedFiles, isSymbolicLink } from './fs/download';
 import getWriteableDirectory from './fs/get-writable-directory';
 import glob from './fs/glob';
 import rename from './fs/rename';
@@ -22,6 +22,7 @@ import streamToBuffer from './fs/stream-to-buffer';
 import shouldServe from './should-serve';
 import { detectBuilders } from './detect-builders';
 import { detectRoutes } from './detect-routes';
+import DetectorFilesystem from './detectors/filesystem';
 import debug from './debug';
 
 export {
@@ -29,9 +30,9 @@ export {
   FileFsRef,
   FileRef,
   Lambda,
+  DetectorFilesystem,
   createLambda,
   Prerender,
-  PrerenderGroup,
   download,
   DownloadedFiles,
   getWriteableDirectory,
@@ -51,6 +52,10 @@ export {
   detectBuilders,
   detectRoutes,
   debug,
+  isSymbolicLink,
+  getLambdaOptionsFromFunction,
 };
 
+export { detectDefaults } from './detectors';
+export * from './schemas';
 export * from './types';

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

@@ -1,8 +1,9 @@
 import assert from 'assert';
 import Sema from 'async-sema';
 import { ZipFile } from 'yazl';
+import minimatch from 'minimatch';
 import { readlink } from 'fs-extra';
-import { Files } from './types';
+import { Files, Config } from './types';
 import FileFsRef from './file-fs-ref';
 import { isSymbolicLink } from './fs/download';
 import streamToBuffer from './fs/stream-to-buffer';
@@ -15,6 +16,8 @@ interface LambdaOptions {
   zipBuffer: Buffer;
   handler: string;
   runtime: string;
+  memory?: number;
+  maxDuration?: number;
   environment: Environment;
 }
 
@@ -22,21 +25,39 @@ interface CreateLambdaOptions {
   files: Files;
   handler: string;
   runtime: string;
+  memory?: number;
+  maxDuration?: number;
   environment?: Environment;
 }
 
+interface GetLambdaOptionsFromFunctionOptions {
+  sourceFile: string;
+  config?: Config;
+}
+
 export class Lambda {
   public type: 'Lambda';
   public zipBuffer: Buffer;
   public handler: string;
   public runtime: string;
+  public memory?: number;
+  public maxDuration?: number;
   public environment: Environment;
 
-  constructor({ zipBuffer, handler, runtime, environment }: LambdaOptions) {
+  constructor({
+    zipBuffer,
+    handler,
+    runtime,
+    maxDuration,
+    memory,
+    environment,
+  }: LambdaOptions) {
     this.type = 'Lambda';
     this.zipBuffer = zipBuffer;
     this.handler = handler;
     this.runtime = runtime;
+    this.memory = memory;
+    this.maxDuration = maxDuration;
     this.environment = environment;
   }
 }
@@ -48,6 +69,8 @@ export async function createLambda({
   files,
   handler,
   runtime,
+  memory,
+  maxDuration,
   environment = {},
 }: CreateLambdaOptions): Promise<Lambda> {
   assert(typeof files === 'object', '"files" must be an object');
@@ -55,6 +78,14 @@ export async function createLambda({
   assert(typeof runtime === 'string', '"runtime" is not a string');
   assert(typeof environment === 'object', '"environment" is not an object');
 
+  if (memory !== undefined) {
+    assert(typeof memory === 'number', '"memory" is not a number');
+  }
+
+  if (maxDuration !== undefined) {
+    assert(typeof maxDuration === 'number', '"maxDuration" is not a number');
+  }
+
   await sema.acquire();
 
   try {
@@ -63,6 +94,8 @@ export async function createLambda({
       zipBuffer,
       handler,
       runtime,
+      memory,
+      maxDuration,
       environment,
     });
   } finally {
@@ -105,3 +138,23 @@ export async function createZip(files: Files): Promise<Buffer> {
 
   return zipBuffer;
 }
+
+export async function getLambdaOptionsFromFunction({
+  sourceFile,
+  config,
+}: GetLambdaOptionsFromFunctionOptions): Promise<
+  Pick<LambdaOptions, 'memory' | 'maxDuration'>
+> {
+  if (config && config.functions) {
+    for (const [pattern, fn] of Object.entries(config.functions)) {
+      if (sourceFile === pattern || minimatch(sourceFile, pattern)) {
+        return {
+          memory: fn.memory,
+          maxDuration: fn.maxDuration,
+        };
+      }
+    }
+  }
+
+  return {};
+}

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

@@ -6,33 +6,37 @@ import { Lambda } from './lambda';
 interface PrerenderOptions {
   expiration: number;
   lambda: Lambda;
-  fallback: FileBlob | FileFsRef | FileRef;
+  fallback: FileBlob | FileFsRef | FileRef | null;
+  group?: number;
 }
 
 export class Prerender {
   public type: 'Prerender';
   public expiration: number;
   public lambda: Lambda;
-  public fallback: FileBlob | FileFsRef | FileRef;
+  public fallback: FileBlob | FileFsRef | FileRef | null;
+  public group?: number;
 
-  constructor({ expiration, lambda, fallback }: PrerenderOptions) {
+  constructor({ expiration, lambda, fallback, group }: PrerenderOptions) {
     this.type = 'Prerender';
     this.expiration = expiration;
     this.lambda = lambda;
+
+    if (
+      typeof group !== 'undefined' &&
+      (group <= 0 || !Number.isInteger(group))
+    ) {
+      throw new Error(
+        'The `group` argument for `Prerender` needs to be a natural number.'
+      );
+    }
+    this.group = group;
+
+    if (typeof fallback === 'undefined') {
+      throw new Error(
+        'The `fallback` argument for `Prerender` needs to be a `FileBlob`, `FileFsRef`, `FileRef`, or null.'
+      );
+    }
     this.fallback = fallback;
   }
 }
-
-interface PrerenderGroupOptions {
-  items: Array<Prerender>;
-}
-
-export class PrerenderGroup {
-  public type: 'PrerenderGroup';
-  public items: Array<Prerender>;
-
-  constructor({ items }: PrerenderGroupOptions) {
-    this.type = 'PrerenderGroup';
-    this.items = items;
-  }
-}

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

@@ -0,0 +1,61 @@
+export const functionsSchema = {
+  type: 'object',
+  minProperties: 1,
+  maxProperties: 50,
+  additionalProperties: false,
+  patternProperties: {
+    '^.{1,256}$': {
+      type: 'object',
+      additionalProperties: false,
+      properties: {
+        runtime: {
+          type: 'string',
+          maxLength: 256,
+        },
+        memory: {
+          // Number between 128 and 3008 in steps of 64
+          enum: Object.keys(Array.from({ length: 50 }))
+            .slice(2, 48)
+            .map(x => Number(x) * 64),
+        },
+        maxDuration: {
+          type: 'number',
+          minimum: 1,
+          maximum: 900,
+        },
+        includeFiles: {
+          type: 'string',
+          maxLength: 256,
+        },
+        excludeFiles: {
+          type: 'string',
+          maxLength: 256,
+        },
+      },
+    },
+  },
+};
+
+export const buildsSchema = {
+  type: 'array',
+  minItems: 0,
+  maxItems: 128,
+  items: {
+    type: 'object',
+    additionalProperties: false,
+    required: ['use'],
+    properties: {
+      src: {
+        type: 'string',
+        minLength: 1,
+        maxLength: 4096,
+      },
+      use: {
+        type: 'string',
+        minLength: 3,
+        maxLength: 256,
+      },
+      config: { type: 'object' },
+    },
+  },
+};

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

@@ -1,5 +1,6 @@
 import FileRef from './file-ref';
 import FileFsRef from './file-fs-ref';
+import DetectorFilesystem from './detectors/filesystem';
 
 export interface Env {
   [name: string]: string | undefined;
@@ -8,6 +9,7 @@ export interface Env {
 export interface File {
   type: string;
   mode: number;
+  contentType?: string;
   toStream: () => NodeJS.ReadableStream;
   /**
    * The absolute path to the file in the filesystem
@@ -38,6 +40,7 @@ export interface Config {
     | boolean
     | number
     | { [key: string]: string }
+    | BuilderFunctions
     | undefined;
   maxLambdaSize?: string;
   includeFiles?: string | string[];
@@ -48,6 +51,7 @@ export interface Config {
   debug?: boolean;
   zeroConfig?: boolean;
   import?: { [key: string]: string };
+  functions?: BuilderFunctions;
 }
 
 export interface Meta {
@@ -190,29 +194,117 @@ export interface ShouldServeOptions {
   config: Config;
 }
 
+/**
+ * Credit to Iain Reid, MIT license.
+ * Source: https://gist.github.com/iainreid820/5c1cc527fe6b5b7dba41fec7fe54bf6e
+ */
+// eslint-disable-next-line @typescript-eslint/no-namespace
+namespace PackageJson {
+  /**
+   * An author or contributor
+   */
+  export interface Author {
+    name: string;
+    email?: string;
+    homepage?: string;
+  }
+
+  /**
+   * A map of exposed bin commands
+   */
+  export interface BinMap {
+    [commandName: string]: string;
+  }
+
+  /**
+   * A bugs link
+   */
+  export interface Bugs {
+    email: string;
+    url: string;
+  }
+
+  export interface Config {
+    name?: string;
+    config?: unknown;
+  }
+
+  /**
+   * A map of dependencies
+   */
+  export interface DependencyMap {
+    [dependencyName: string]: string;
+  }
+
+  /**
+   * CommonJS package structure
+   */
+  export interface Directories {
+    lib?: string;
+    bin?: string;
+    man?: string;
+    doc?: string;
+    example?: string;
+  }
+
+  export interface Engines {
+    node?: string;
+    npm?: string;
+  }
+
+  export interface PublishConfig {
+    registry?: string;
+  }
+
+  /**
+   * A project repository
+   */
+  export interface Repository {
+    type: string;
+    url: string;
+  }
+
+  export interface ScriptsMap {
+    [scriptName: string]: string;
+  }
+}
+
 export interface PackageJson {
-  name?: string;
-  version?: string;
-  engines?: {
-    [key: string]: string;
-    node: string;
-    npm: string;
-  };
-  scripts?: {
-    [key: string]: string;
-  };
-  dependencies?: {
-    [key: string]: string;
-  };
-  devDependencies?: {
-    [key: string]: string;
-  };
+  readonly name?: string;
+  readonly version?: string;
+  readonly description?: string;
+  readonly keywords?: string[];
+  readonly homepage?: string;
+  readonly bugs?: string | PackageJson.Bugs;
+  readonly license?: string;
+  readonly author?: string | PackageJson.Author;
+  readonly contributors?: string[] | PackageJson.Author[];
+  readonly files?: string[];
+  readonly main?: string;
+  readonly bin?: string | PackageJson.BinMap;
+  readonly man?: string | string[];
+  readonly directories?: PackageJson.Directories;
+  readonly repository?: string | PackageJson.Repository;
+  readonly scripts?: PackageJson.ScriptsMap;
+  readonly config?: PackageJson.Config;
+  readonly dependencies?: PackageJson.DependencyMap;
+  readonly devDependencies?: PackageJson.DependencyMap;
+  readonly peerDependencies?: PackageJson.DependencyMap;
+  readonly optionalDependencies?: PackageJson.DependencyMap;
+  readonly bundledDependencies?: string[];
+  readonly engines?: PackageJson.Engines;
+  readonly os?: string[];
+  readonly cpu?: string[];
+  readonly preferGlobal?: boolean;
+  readonly private?: boolean;
+  readonly publishConfig?: PackageJson.PublishConfig;
 }
 
 export interface NodeVersion {
   major: number;
   range: string;
   runtime: string;
+  discontinueDate?: Date;
 }
 
 export interface Builder {
@@ -220,3 +312,64 @@ export interface Builder {
   src: string;
   config?: Config;
 }
+
+export interface BuilderFunctions {
+  [key: string]: {
+    memory?: number;
+    maxDuration?: number;
+    runtime?: string;
+    includeFiles?: string;
+    excludeFiles?: string;
+  };
+}
+
+export interface NowRewrite {
+  source: string;
+  destination: string;
+}
+
+export interface NowRedirect {
+  source: string;
+  destination: string;
+  statusCode?: number;
+}
+
+export interface NowHeader {
+  source: string;
+  headers: NowHeaderKeyValue[];
+}
+
+export interface NowHeaderKeyValue {
+  key: string;
+  value: string;
+}
+
+export type Detector = (params: DetectorParameters) => Promise<DetectorResult>;
+
+export interface DetectorParameters {
+  fs: DetectorFilesystem;
+  detectors?: Detector[];
+  pkgDetectors?: Detector[];
+}
+
+export interface DetectorOutput {
+  buildCommand: string;
+  outputDirectory: string;
+  buildVariables?: Env;
+  devCommand?: string;
+  devVariables?: Env;
+  minNodeRange?: string;
+  cachePattern?: string;
+  routes?: Route[];
+  cleanUrls?: boolean;
+  rewrites?: NowRewrite[];
+  redirects?: NowRedirect[];
+  headers?: NowHeader[];
+  trailingSlash?: boolean;
+  framework?: {
+    slug: string;
+    version: string;
+  };
+}
+
+export type DetectorResult = DetectorOutput | false;

packages/now-build-utils/test/fixtures/03-zero-config-angular/.editorconfig

@@ -0,0 +1,13 @@
+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false

packages/now-build-utils/test/fixtures/03-zero-config-angular/.gitignore

@@ -0,0 +1,46 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# compiled output
+/dist
+/tmp
+/out-tsc
+# Only exists if Bazel was run
+/bazel-out
+
+# dependencies
+/node_modules
+
+# profiling files
+chrome-profiler-events*.json
+speed-measure-plugin*.json
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+.history/*
+
+# misc
+/.sass-cache
+/connect.lock
+/coverage
+/libpeerconnection.log
+npm-debug.log
+yarn-error.log
+testem.log
+/typings
+
+# System Files
+.DS_Store
+Thumbs.db

packages/now-build-utils/test/fixtures/03-zero-config-angular/README.md

@@ -0,0 +1,27 @@
+# Angular
+
+This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 8.3.17.
+
+## Development server
+
+Run `ng serve` for a dev server. Navigate to `http://localhost:4200/`. The app will automatically reload if you change any of the source files.
+
+## Code scaffolding
+
+Run `ng generate component component-name` to generate a new component. You can also use `ng generate directive|pipe|service|class|guard|interface|enum|module`.
+
+## Build
+
+Run `ng build` to build the project. The build artifacts will be stored in the `dist/` directory. Use the `--prod` flag for a production build.
+
+## Running unit tests
+
+Run `ng test` to execute the unit tests via [Karma](https://karma-runner.github.io).
+
+## Running end-to-end tests
+
+Run `ng e2e` to execute the end-to-end tests via [Protractor](http://www.protractortest.org/).
+
+## Further help
+
+To get more help on the Angular CLI use `ng help` or go check out the [Angular CLI README](https://github.com/angular/angular-cli/blob/master/README.md).

packages/now-build-utils/test/fixtures/03-zero-config-angular/angular.json

@@ -0,0 +1,114 @@
+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "angular": {
+      "projectType": "application",
+      "schematics": {},
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:browser",
+          "options": {
+            "outputPath": "dist/angular",
+            "index": "src/index.html",
+            "main": "src/main.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.app.json",
+            "aot": false,
+            "assets": ["src/favicon.ico", "src/assets"],
+            "styles": ["src/styles.css"],
+            "scripts": []
+          },
+          "configurations": {
+            "production": {
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.prod.ts"
+                }
+              ],
+              "optimization": true,
+              "outputHashing": "all",
+              "sourceMap": false,
+              "extractCss": true,
+              "namedChunks": false,
+              "aot": true,
+              "extractLicenses": true,
+              "vendorChunk": false,
+              "buildOptimizer": true,
+              "budgets": [
+                {
+                  "type": "initial",
+                  "maximumWarning": "2mb",
+                  "maximumError": "5mb"
+                },
+                {
+                  "type": "anyComponentStyle",
+                  "maximumWarning": "6kb",
+                  "maximumError": "10kb"
+                }
+              ]
+            }
+          }
+        },
+        "serve": {
+          "builder": "@angular-devkit/build-angular:dev-server",
+          "options": {
+            "browserTarget": "angular:build"
+          },
+          "configurations": {
+            "production": {
+              "browserTarget": "angular:build:production"
+            }
+          }
+        },
+        "extract-i18n": {
+          "builder": "@angular-devkit/build-angular:extract-i18n",
+          "options": {
+            "browserTarget": "angular:build"
+          }
+        },
+        "test": {
+          "builder": "@angular-devkit/build-angular:karma",
+          "options": {
+            "main": "src/test.ts",
+            "polyfills": "src/polyfills.ts",
+            "tsConfig": "tsconfig.spec.json",
+            "karmaConfig": "karma.conf.js",
+            "assets": ["src/favicon.ico", "src/assets"],
+            "styles": ["src/styles.css"],
+            "scripts": []
+          }
+        },
+        "lint": {
+          "builder": "@angular-devkit/build-angular:tslint",
+          "options": {
+            "tsConfig": [
+              "tsconfig.app.json",
+              "tsconfig.spec.json",
+              "e2e/tsconfig.json"
+            ],
+            "exclude": ["**/node_modules/**"]
+          }
+        },
+        "e2e": {
+          "builder": "@angular-devkit/build-angular:protractor",
+          "options": {
+            "protractorConfig": "e2e/protractor.conf.js",
+            "devServerTarget": "angular:serve"
+          },
+          "configurations": {
+            "production": {
+              "devServerTarget": "angular:serve:production"
+            }
+          }
+        }
+      }
+    }
+  },
+  "defaultProject": "angular"
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/browserslist

@@ -0,0 +1,12 @@
+# This file is used by the build system to adjust CSS and JS output to support the specified browsers below.
+# For additional information regarding the format and rule options, please see:
+# https://github.com/browserslist/browserslist#queries
+
+# You can see what browsers were selected by your queries by running:
+#   npx browserslist
+
+> 0.5%
+last 2 versions
+Firefox ESR
+not dead
+not IE 9-11 # For IE 9-11 support, remove 'not'.

packages/now-build-utils/test/fixtures/03-zero-config-angular/e2e/protractor.conf.js

@@ -0,0 +1,32 @@
+// @ts-check
+// Protractor configuration file, see link for more information
+// https://github.com/angular/protractor/blob/master/lib/config.ts
+
+const { SpecReporter } = require('jasmine-spec-reporter');
+
+/**
+ * @type { import("protractor").Config }
+ */
+exports.config = {
+  allScriptsTimeout: 11000,
+  specs: ['./src/**/*.e2e-spec.ts'],
+  capabilities: {
+    browserName: 'chrome',
+  },
+  directConnect: true,
+  baseUrl: 'http://localhost:4200/',
+  framework: 'jasmine',
+  jasmineNodeOpts: {
+    showColors: true,
+    defaultTimeoutInterval: 30000,
+    print: function() {},
+  },
+  onPrepare() {
+    require('ts-node').register({
+      project: require('path').join(__dirname, './tsconfig.json'),
+    });
+    jasmine
+      .getEnv()
+      .addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
+  },
+};

packages/now-build-utils/test/fixtures/03-zero-config-angular/e2e/src/app.e2e-spec.ts

@@ -0,0 +1,28 @@
+import { AppPage } from './app.po';
+import { browser, logging } from 'protractor';
+
+describe('workspace-project App', () => {
+  let page: AppPage;
+
+  beforeEach(() => {
+    page = new AppPage();
+  });
+
+  it('should display welcome message', () => {
+    page.navigateTo();
+    expect(page.getTitleText()).toEqual('angular app is running!');
+  });
+
+  afterEach(async () => {
+    // Assert that there are no errors emitted from the browser
+    const logs = await browser
+      .manage()
+      .logs()
+      .get(logging.Type.BROWSER);
+    expect(logs).not.toContain(
+      jasmine.objectContaining({
+        level: logging.Level.SEVERE,
+      } as logging.Entry)
+    );
+  });
+});

packages/now-build-utils/test/fixtures/03-zero-config-angular/e2e/src/app.po.ts

@@ -0,0 +1,13 @@
+import { browser, by, element } from 'protractor';
+
+export class AppPage {
+  navigateTo() {
+    return browser.get(browser.baseUrl) as Promise<any>;
+  }
+
+  getTitleText() {
+    return element(by.css('app-root .content span')).getText() as Promise<
+      string
+    >;
+  }
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/e2e/tsconfig.json

@@ -0,0 +1,9 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../out-tsc/e2e",
+    "module": "commonjs",
+    "target": "es5",
+    "types": ["jasmine", "jasminewd2", "node"]
+  }
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/karma.conf.js

@@ -0,0 +1,32 @@
+// Karma configuration file, see link for more information
+// https://karma-runner.github.io/1.0/config/configuration-file.html
+
+module.exports = function(config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', '@angular-devkit/build-angular'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-chrome-launcher'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-coverage-istanbul-reporter'),
+      require('@angular-devkit/build-angular/plugins/karma'),
+    ],
+    client: {
+      clearContext: false, // leave Jasmine Spec Runner output visible in browser
+    },
+    coverageIstanbulReporter: {
+      dir: require('path').join(__dirname, './coverage/angular'),
+      reports: ['html', 'lcovonly', 'text-summary'],
+      fixWebpackSourcePaths: true,
+    },
+    reporters: ['progress', 'kjhtml'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    singleRun: false,
+    restartOnFileChange: true,
+  });
+};

packages/now-build-utils/test/fixtures/03-zero-config-angular/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "angular",
+  "version": "0.0.0",
+  "scripts": {
+    "ng": "ng",
+    "start": "ng serve",
+    "build": "ng build",
+    "test": "ng test",
+    "lint": "ng lint",
+    "e2e": "ng e2e"
+  },
+  "private": true,
+  "dependencies": {
+    "@angular/animations": "~8.2.13",
+    "@angular/common": "~8.2.13",
+    "@angular/compiler": "~8.2.13",
+    "@angular/core": "~8.2.13",
+    "@angular/forms": "~8.2.13",
+    "@angular/platform-browser": "~8.2.13",
+    "@angular/platform-browser-dynamic": "~8.2.13",
+    "@angular/router": "~8.2.13",
+    "rxjs": "~6.4.0",
+    "tslib": "^1.10.0",
+    "zone.js": "~0.9.1"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "~0.803.17",
+    "@angular/cli": "~8.3.17",
+    "@angular/compiler-cli": "~8.2.13",
+    "@angular/language-service": "~8.2.13",
+    "@types/node": "~8.9.4",
+    "@types/jasmine": "~3.3.8",
+    "@types/jasminewd2": "~2.0.3",
+    "codelyzer": "^5.0.0",
+    "jasmine-core": "~3.4.0",
+    "jasmine-spec-reporter": "~4.2.1",
+    "karma": "~4.1.0",
+    "karma-chrome-launcher": "~2.2.0",
+    "karma-coverage-istanbul-reporter": "~2.0.1",
+    "karma-jasmine": "~2.0.1",
+    "karma-jasmine-html-reporter": "^1.4.0",
+    "protractor": "~5.4.0",
+    "ts-node": "~7.0.0",
+    "tslint": "~5.15.0",
+    "typescript": "~3.5.3"
+  }
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/app/app.component.html

@@ -0,0 +1,536 @@
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+<!-- * * * * * * * * * * * The content below * * * * * * * * * * * -->
+<!-- * * * * * * * * * * is only a placeholder * * * * * * * * * * -->
+<!-- * * * * * * * * * * and can be replaced. * * * * * * * * * * * -->
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+<!-- * * * * * * * * * Delete the template below * * * * * * * * * * -->
+<!-- * * * * * * * to get started with your project! * * * * * * * * -->
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+
+<style>
+  :host {
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+    font-size: 14px;
+    color: #333;
+    box-sizing: border-box;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+  }
+
+  h1,
+  h2,
+  h3,
+  h4,
+  h5,
+  h6 {
+    margin: 8px 0;
+  }
+
+  p {
+    margin: 0;
+  }
+
+  .spacer {
+    flex: 1;
+  }
+
+  .toolbar {
+    height: 60px;
+    margin: -8px;
+    display: flex;
+    align-items: center;
+    background-color: #1976d2;
+    color: white;
+    font-weight: 600;
+  }
+
+  .toolbar img {
+    margin: 0 16px;
+  }
+
+  .toolbar #twitter-logo {
+    height: 40px;
+    margin: 0 16px;
+  }
+
+  .toolbar #twitter-logo:hover {
+    opacity: 0.8;
+  }
+
+  .content {
+    display: flex;
+    margin: 32px auto;
+    padding: 0 16px;
+    max-width: 960px;
+    flex-direction: column;
+    align-items: center;
+  }
+
+  svg.material-icons {
+    height: 24px;
+    width: auto;
+  }
+
+  svg.material-icons:not(:last-child) {
+    margin-right: 8px;
+  }
+
+  .card svg.material-icons path {
+    fill: #888;
+  }
+
+  .card-container {
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: center;
+    margin-top: 16px;
+  }
+
+  .card {
+    border-radius: 4px;
+    border: 1px solid #eee;
+    background-color: #fafafa;
+    height: 40px;
+    width: 200px;
+    margin: 0 8px 16px;
+    padding: 16px;
+    display: flex;
+    flex-direction: row;
+    justify-content: center;
+    align-items: center;
+    transition: all 0.2s ease-in-out;
+    line-height: 24px;
+  }
+
+  .card-container .card:not(:last-child) {
+    margin-right: 0;
+  }
+
+  .card.card-small {
+    height: 16px;
+    width: 168px;
+  }
+
+  .card-container .card:not(.highlight-card) {
+    cursor: pointer;
+  }
+
+  .card-container .card:not(.highlight-card):hover {
+    transform: translateY(-3px);
+    box-shadow: 0 4px 17px rgba(black, 0.35);
+  }
+
+  .card-container .card:not(.highlight-card):hover .material-icons path {
+    fill: rgb(105, 103, 103);
+  }
+
+  .card.highlight-card {
+    background-color: #1976d2;
+    color: white;
+    font-weight: 600;
+    border: none;
+    width: auto;
+    min-width: 30%;
+    position: relative;
+  }
+
+  .card.card.highlight-card span {
+    margin-left: 60px;
+  }
+
+  svg#rocket {
+    width: 80px;
+    position: absolute;
+    left: -10px;
+    top: -24px;
+  }
+
+  svg#rocket-smoke {
+    height: 100vh;
+    position: absolute;
+    top: 10px;
+    right: 180px;
+    z-index: -10;
+  }
+
+  a,
+  a:visited,
+  a:hover {
+    color: #1976d2;
+    text-decoration: none;
+  }
+
+  a:hover {
+    color: #125699;
+  }
+
+  .terminal {
+    position: relative;
+    width: 80%;
+    max-width: 600px;
+    border-radius: 6px;
+    padding-top: 45px;
+    margin-top: 8px;
+    overflow: hidden;
+    background-color: rgb(15, 15, 16);
+  }
+
+  .terminal::before {
+    content: "\2022 \2022 \2022";
+    position: absolute;
+    top: 0;
+    left: 0;
+    height: 4px;
+    background: rgb(58, 58, 58);
+    color: #c2c3c4;
+    width: 100%;
+    font-size: 2rem;
+    line-height: 0;
+    padding: 14px 0;
+    text-indent: 4px;
+  }
+
+  .terminal pre {
+    font-family: SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;
+    color: white;
+    padding: 0 1rem 1rem;
+    margin: 0;
+  }
+
+  .circle-link {
+    height: 40px;
+    width: 40px;
+    border-radius: 40px;
+    margin: 8px;
+    background-color: white;
+    border: 1px solid #eeeeee;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    cursor: pointer;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
+    transition: 1s ease-out;
+  }
+
+  .circle-link:hover {
+    transform: translateY(-0.25rem);
+    box-shadow: 0px 3px 15px rgba(0, 0, 0, 0.2);
+  }
+
+  footer {
+    margin-top: 8px;
+    display: flex;
+    align-items: center;
+    line-height: 20px;
+  }
+
+  footer a {
+    display: flex;
+    align-items: center;
+  }
+
+  .github-star-badge {
+    color: #24292e;
+    display: flex;
+    align-items: center;
+    font-size: 12px;
+    padding: 3px 10px;
+    border: 1px solid rgba(27,31,35,.2);
+    border-radius: 3px;
+    background-image: linear-gradient(-180deg,#fafbfc,#eff3f6 90%);
+    margin-left: 4px;
+    font-weight: 600;
+    font-family: -apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol;
+  }
+
+  .github-star-badge:hover {
+    background-image: linear-gradient(-180deg,#f0f3f6,#e6ebf1 90%);
+    border-color: rgba(27,31,35,.35);
+    background-position: -.5em;
+  }
+
+  .github-star-badge .material-icons {
+    height: 16px;
+    width: 16px;
+    margin-right: 4px;
+  }
+
+  svg#clouds {
+    position: fixed;
+    bottom: -160px;
+    left: -230px;
+    z-index: -10;
+    width: 1920px;
+  }
+
+
+  /* Responsive Styles */
+  @media screen and (max-width: 767px) {
+
+    .card-container > *:not(.circle-link) ,
+    .terminal {
+      width: 100%;
+    }
+
+    .card:not(.highlight-card) {
+      height: 16px;
+      margin: 8px 0;
+    }
+
+    .card.highlight-card span {
+      margin-left: 72px;
+    }
+
+    svg#rocket-smoke {
+      right: 120px;
+      transform: rotate(-5deg);
+    }
+  }
+
+  @media screen and (max-width: 575px) {
+    svg#rocket-smoke {
+      display: none;
+      visibility: hidden;
+    }
+  }
+</style>
+
+<!-- Toolbar -->
+<div class="toolbar" role="banner">
+  <img
+    width="40"
+    alt="Angular Logo"
+    src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg=="
+  />
+  <span>Welcome</span>
+    <div class="spacer"></div>
+  <a aria-label="Angular on twitter" target="_blank" rel="noopener" href="https://twitter.com/angular" title="Twitter">
+    
+    <svg id="twitter-logo" height="24" data-name="Logo — FIXED" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400">
+      <defs>
+        <style>
+          .cls-1 {
+            fill: none;
+          }
+
+          .cls-2 {
+            fill: #ffffff;
+          }
+        </style>
+      </defs>
+      <rect class="cls-1" width="400" height="400" />
+      <path class="cls-2" d="M153.62,301.59c94.34,0,145.94-78.16,145.94-145.94,0-2.22,0-4.43-.15-6.63A104.36,104.36,0,0,0,325,122.47a102.38,102.38,0,0,1-29.46,8.07,51.47,51.47,0,0,0,22.55-28.37,102.79,102.79,0,0,1-32.57,12.45,51.34,51.34,0,0,0-87.41,46.78A145.62,145.62,0,0,1,92.4,107.81a51.33,51.33,0,0,0,15.88,68.47A50.91,50.91,0,0,1,85,169.86c0,.21,0,.43,0,.65a51.31,51.31,0,0,0,41.15,50.28,51.21,51.21,0,0,1-23.16.88,51.35,51.35,0,0,0,47.92,35.62,102.92,102.92,0,0,1-63.7,22A104.41,104.41,0,0,1,75,278.55a145.21,145.21,0,0,0,78.62,23"
+      />
+    </svg>
+    
+  </a>
+</div>
+
+<div class="content" role="main">
+
+  <!-- Highlight Card -->
+  <div class="card highlight-card card-small">
+
+    <svg id="rocket" alt="Rocket Ship" xmlns="http://www.w3.org/2000/svg" width="101.678" height="101.678" viewBox="0 0 101.678 101.678">
+      <g id="Group_83" data-name="Group 83" transform="translate(-141 -696)">
+        <circle id="Ellipse_8" data-name="Ellipse 8" cx="50.839" cy="50.839" r="50.839" transform="translate(141 696)" fill="#dd0031"/>
+        <g id="Group_47" data-name="Group 47" transform="translate(165.185 720.185)">
+          <path id="Path_33" data-name="Path 33" d="M3.4,42.615a3.084,3.084,0,0,0,3.553,3.553,21.419,21.419,0,0,0,12.215-6.107L9.511,30.4A21.419,21.419,0,0,0,3.4,42.615Z" transform="translate(0.371 3.363)" fill="#fff"/>
+          <path id="Path_34" data-name="Path 34" d="M53.3,3.221A3.09,3.09,0,0,0,50.081,0,48.227,48.227,0,0,0,18.322,13.437c-6-1.666-14.991-1.221-18.322,7.218A33.892,33.892,0,0,1,9.439,25.1l-.333.666a3.013,3.013,0,0,0,.555,3.553L23.985,43.641a2.9,2.9,0,0,0,3.553.555l.666-.333A33.892,33.892,0,0,1,32.647,53.3c8.55-3.664,8.884-12.326,7.218-18.322A48.227,48.227,0,0,0,53.3,3.221ZM34.424,9.772a6.439,6.439,0,1,1,9.106,9.106,6.368,6.368,0,0,1-9.106,0A6.467,6.467,0,0,1,34.424,9.772Z" transform="translate(0 0.005)" fill="#fff"/>
+        </g>
+      </g>
+    </svg>
+
+    <span>{{ title }} app is running!</span>
+
+    <svg id="rocket-smoke" alt="Rocket Ship Smoke" xmlns="http://www.w3.org/2000/svg" width="516.119" height="1083.632" viewBox="0 0 516.119 1083.632">
+      <path id="Path_40" data-name="Path 40" d="M644.6,141S143.02,215.537,147.049,870.207s342.774,201.755,342.774,201.755S404.659,847.213,388.815,762.2c-27.116-145.51-11.551-384.124,271.9-609.1C671.15,139.365,644.6,141,644.6,141Z" transform="translate(-147.025 -140.939)" fill="#f5f5f5"/>
+    </svg>
+
+  </div>
+
+  <!-- Resources -->
+  <h2>Resources</h2>
+  <p>Here are some links to help you get started:</p>
+
+  <div class="card-container">
+    <a class="card" target="_blank" rel="noopener" href="https://angular.io/tutorial">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M5 13.18v4L12 21l7-3.82v-4L12 17l-7-3.82zM12 3L1 9l11 6 9-4.91V17h2V9L12 3z"/></svg>
+
+      <span>Learn Angular</span>
+
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>    </a>
+
+    <a class="card" target="_blank" rel="noopener" href="https://angular.io/cli">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M9.4 16.6L4.8 12l4.6-4.6L8 6l-6 6 6 6 1.4-1.4zm5.2 0l4.6-4.6-4.6-4.6L16 6l6 6-6 6-1.4-1.4z"/></svg>
+
+      <span>CLI Documentation</span>
+
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>
+    </a>
+
+    <a class="card" target="_blank" rel="noopener" href="https://blog.angular.io/">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M13.5.67s.74 2.65.74 4.8c0 2.06-1.35 3.73-3.41 3.73-2.07 0-3.63-1.67-3.63-3.73l.03-.36C5.21 7.51 4 10.62 4 14c0 4.42 3.58 8 8 8s8-3.58 8-8C20 8.61 17.41 3.8 13.5.67zM11.71 19c-1.78 0-3.22-1.4-3.22-3.14 0-1.62 1.05-2.76 2.81-3.12 1.77-.36 3.6-1.21 4.62-2.58.39 1.29.59 2.65.59 4.04 0 2.65-2.15 4.8-4.8 4.8z"/></svg>
+
+      <span>Angular Blog</span>
+
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z"/></svg>
+    </a>
+
+  </div>
+
+  <!-- Next Steps -->
+  <h2>Next Steps</h2>
+  <p>What do you want to do next with your app?</p>
+
+  <input type="hidden" #selection>
+
+  <div class="card-container">
+    <div class="card card-small" (click)="selection.value = 'component'" tabindex="0">
+        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+
+      <span>New Component</span>
+    </div>
+
+    <div class="card card-small" (click)="selection.value = 'material'" tabindex="0">
+        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+
+      <span>Angular Material</span>
+    </div>
+
+    <div class="card card-small" (click)="selection.value = 'dependency'" tabindex="0">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+
+      <span>Add Dependency</span>
+    </div>
+
+    <div class="card card-small" (click)="selection.value = 'test'" tabindex="0">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+
+      <span>Run and Watch Tests</span>
+    </div>
+
+    <div class="card card-small" (click)="selection.value = 'build'" tabindex="0">
+      <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+
+      <span>Build for Production</span>
+    </div>
+  </div>
+
+  <!-- Terminal -->
+  <div class="terminal" [ngSwitch]="selection.value">
+      <pre *ngSwitchDefault>ng generate component xyz</pre>
+      <pre *ngSwitchCase="'material'">ng add @angular/material</pre>
+      <pre *ngSwitchCase="'dependency'">ng add _____</pre>
+      <pre *ngSwitchCase="'test'">ng test</pre>
+      <pre *ngSwitchCase="'build'">ng build --prod</pre>
+  </div>
+
+  <!-- Links -->
+  <div class="card-container">
+    <a class="circle-link" title="Animations" href="https://angular.io/guide/animations" target="_blank" rel="noopener">
+      <svg id="Group_20" data-name="Group 20" xmlns="http://www.w3.org/2000/svg" width="21.813" height="23.453" viewBox="0 0 21.813 23.453">
+        <path id="Path_15" data-name="Path 15" d="M4099.584,972.736h0l-10.882,3.9,1.637,14.4,9.245,5.153,9.245-5.153,1.686-14.4Z" transform="translate(-4088.702 -972.736)" fill="#ffa726"/>
+        <path id="Path_16" data-name="Path 16" d="M4181.516,972.736v23.453l9.245-5.153,1.686-14.4Z" transform="translate(-4170.633 -972.736)" fill="#fb8c00"/>
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+        <path id="Path_18" data-name="Path 18" d="M4137.529,1051.705l-7.7-3.723,4.417-2.721,7.753,3.723Z" transform="translate(-4125.003 -1036.757)" fill="#fff3e0"/>
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+      </svg>
+    </a>
+
+    <a class="circle-link" title="CLI" href="https://cli.angular.io/" target="_blank" rel="noopener">
+      <svg alt="Angular CLI Logo" xmlns="http://www.w3.org/2000/svg" width="21.762" height="23.447" viewBox="0 0 21.762 23.447">
+        <g id="Group_21" data-name="Group 21" transform="translate(0)">
+          <path id="Path_20" data-name="Path 20" d="M2660.313,313.618h0l-10.833,3.9,1.637,14.4,9.2,5.152,9.244-5.152,1.685-14.4Z" transform="translate(-2649.48 -313.618)" fill="#37474f"/>
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+          <path id="Path_22" data-name="Path 22" d="M2692.293,379.169h11.724V368.618h-11.724Zm11.159-.6h-10.608v-9.345h10.621v9.345Z" transform="translate(-2687.274 -362.17)" fill="#fff"/>
+          <path id="Path_23" data-name="Path 23" d="M2709.331,393.688l.4.416,2.265-2.28-2.294-2.294-.4.4,1.893,1.893Z" transform="translate(-2702.289 -380.631)" fill="#fff"/>
+          <rect id="Rectangle_12" data-name="Rectangle 12" width="3.517" height="0.469" transform="translate(9.709 13.744)" fill="#fff"/>
+        </g>
+      </svg>
+    </a>
+
+    <a class="circle-link" title="Augury" href="https://augury.rangle.io/" target="_blank" rel="noopener">
+      <svg alt="Angular Augury Logo" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="21.81" height="23.447" viewBox="0 0 21.81 23.447">
+        <defs>
+          <clipPath id="clip-path">
+            <rect id="Rectangle_13" data-name="Rectangle 13" width="10.338" height="10.27" fill="none"/>
+          </clipPath>
+        </defs>
+        <g id="Group_25" data-name="Group 25" transform="translate(0)">
+          <path id="Path_24" data-name="Path 24" d="M3780.155,311.417h0l-10.881,3.9,1.637,14.4,9.244,5.152,9.244-5.152,1.685-14.4Z" transform="translate(-3769.274 -311.417)" fill="#4a3493"/>
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+          <g id="Group_24" data-name="Group 24" transform="translate(6.194 6.73)" opacity="0.5">
+            <g id="Group_23" data-name="Group 23" transform="translate(0 0)">
+              <g id="Group_22" data-name="Group 22" clip-path="url(#clip-path)">
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+          </g>
+          <path id="Path_27" data-name="Path 27" d="M3830.582,370.848a5.162,5.162,0,1,1-3.254-4.086,3.017,3.017,0,1,0,3.252,4.086Z" transform="translate(-3814.311 -359.969)" fill="#fff"/>
+        </g>
+      </svg>
+    </a>
+
+    <a class="circle-link" title="Protractor" href="https://www.protractortest.org/" target="_blank" rel="noopener">
+      <svg alt="Angular Protractor Logo" xmlns="http://www.w3.org/2000/svg" width="21.81" height="23.447" viewBox="0 0 21.81 23.447">
+        <g id="Group_26" data-name="Group 26" transform="translate(0)">
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+        </g>
+      </svg>
+    </a>
+
+    <a class="circle-link" title="Find a Local Meetup" href="https://www.meetup.com/find/?keywords=angular" target="_blank" rel="noopener">
+      <svg alt="Meetup Logo" xmlns="http://www.w3.org/2000/svg" width="24.607" height="23.447" viewBox="0 0 24.607 23.447">
+        <path id="logo--mSwarm" d="M21.221,14.95A4.393,4.393,0,0,1,17.6,19.281a4.452,4.452,0,0,1-.8.069c-.09,0-.125.035-.154.117a2.939,2.939,0,0,1-2.506,2.091,2.868,2.868,0,0,1-2.248-.624.168.168,0,0,0-.245-.005,3.926,3.926,0,0,1-2.589.741,4.015,4.015,0,0,1-3.7-3.347,2.7,2.7,0,0,1-.043-.38c0-.106-.042-.146-.143-.166a3.524,3.524,0,0,1-1.516-.69A3.623,3.623,0,0,1,2.23,14.557a3.66,3.66,0,0,1,1.077-3.085.138.138,0,0,0,.026-.2,3.348,3.348,0,0,1-.451-1.821,3.46,3.46,0,0,1,2.749-3.28.44.44,0,0,0,.355-.281,5.072,5.072,0,0,1,3.863-3,5.028,5.028,0,0,1,3.555.666.31.31,0,0,0,.271.03A4.5,4.5,0,0,1,18.3,4.7a4.4,4.4,0,0,1,1.334,2.751,3.658,3.658,0,0,1,.022.706.131.131,0,0,0,.1.157,2.432,2.432,0,0,1,1.574,1.645,2.464,2.464,0,0,1-.7,2.616c-.065.064-.051.1-.014.166A4.321,4.321,0,0,1,21.221,14.95ZM13.4,14.607a2.09,2.09,0,0,0,1.409,1.982,4.7,4.7,0,0,0,1.275.221,1.807,1.807,0,0,0,.9-.151.542.542,0,0,0,.321-.545.558.558,0,0,0-.359-.534,1.2,1.2,0,0,0-.254-.078c-.262-.047-.526-.086-.787-.138a.674.674,0,0,1-.617-.75,3.394,3.394,0,0,1,.218-1.109c.217-.658.509-1.286.79-1.918a15.609,15.609,0,0,0,.745-1.86,1.95,1.95,0,0,0,.06-1.073,1.286,1.286,0,0,0-1.051-1.033,1.977,1.977,0,0,0-1.521.2.339.339,0,0,1-.446-.042c-.1-.092-.2-.189-.307-.284a1.214,1.214,0,0,0-1.643-.061,7.563,7.563,0,0,1-.614.512A.588.588,0,0,1,10.883,8c-.215-.115-.437-.215-.659-.316a2.153,2.153,0,0,0-.695-.248A2.091,2.091,0,0,0,7.541,8.562a9.915,9.915,0,0,0-.405.986c-.559,1.545-1.015,3.123-1.487,4.7a1.528,1.528,0,0,0,.634,1.777,1.755,1.755,0,0,0,1.5.211,1.35,1.35,0,0,0,.824-.858c.543-1.281,1.032-2.584,1.55-3.875.142-.355.28-.712.432-1.064a.548.548,0,0,1,.851-.24.622.622,0,0,1,.185.539,2.161,2.161,0,0,1-.181.621c-.337.852-.68,1.7-1.018,2.552a2.564,2.564,0,0,0-.173.528.624.624,0,0,0,.333.71,1.073,1.073,0,0,0,.814.034,1.22,1.22,0,0,0,.657-.655q.758-1.488,1.511-2.978.35-.687.709-1.37a1.073,1.073,0,0,1,.357-.434.43.43,0,0,1,.463-.016.373.373,0,0,1,.153.387.7.7,0,0,1-.057.236c-.065.157-.127.316-.2.469-.42.883-.846,1.763-1.262,2.648A2.463,2.463,0,0,0,13.4,14.607Zm5.888,6.508a1.09,1.09,0,0,0-2.179.006,1.09,1.09,0,0,0,2.179-.006ZM1.028,12.139a1.038,1.038,0,1,0,.01-2.075,1.038,1.038,0,0,0-.01,2.075ZM13.782.528a1.027,1.027,0,1,0-.011,2.055A1.027,1.027,0,0,0,13.782.528ZM22.21,6.95a.882.882,0,0,0-1.763.011A.882.882,0,0,0,22.21,6.95ZM4.153,4.439a.785.785,0,1,0,.787-.78A.766.766,0,0,0,4.153,4.439Zm8.221,18.22a.676.676,0,1,0-.677.666A.671.671,0,0,0,12.374,22.658ZM22.872,12.2a.674.674,0,0,0-.665.665.656.656,0,0,0,.655.643.634.634,0,0,0,.655-.644A.654.654,0,0,0,22.872,12.2ZM7.171-.123A.546.546,0,0,0,6.613.43a.553.553,0,1,0,1.106,0A.539.539,0,0,0,7.171-.123ZM24.119,9.234a.507.507,0,0,0-.493.488.494.494,0,0,0,.494.494.48.48,0,0,0,.487-.483A.491.491,0,0,0,24.119,9.234Zm-19.454,9.7a.5.5,0,0,0-.488-.488.491.491,0,0,0-.487.5.483.483,0,0,0,.491.479A.49.49,0,0,0,4.665,18.936Z" transform="translate(0 0.123)" fill="#f64060"/>
+      </svg>
+    </a>
+
+    <a class="circle-link" title="Join the Conversation on Gitter" href="https://gitter.im/angular/angular" target="_blank" rel="noopener">
+      <svg alt="Gitter Logo" xmlns="http://www.w3.org/2000/svg" width="19.447" height="19.447" viewBox="0 0 19.447 19.447">
+        <g id="Group_40" data-name="Group 40" transform="translate(-1612 -405)">
+          <rect id="Rectangle_19" data-name="Rectangle 19" width="19.447" height="19.447" transform="translate(1612 405)" fill="#e60257"/>
+          <g id="gitter" transform="translate(1617.795 408.636)">
+            <g id="Group_33" data-name="Group 33" transform="translate(0 0)">
+              <rect id="Rectangle_15" data-name="Rectangle 15" width="1.04" height="9.601" transform="translate(2.304 2.324)" fill="#fff"/>
+              <rect id="Rectangle_16" data-name="Rectangle 16" width="1.04" height="9.601" transform="translate(4.607 2.324)" fill="#fff"/>
+              <rect id="Rectangle_17" data-name="Rectangle 17" width="1.04" height="4.648" transform="translate(6.91 2.324)" fill="#fff"/>
+              <rect id="Rectangle_18" data-name="Rectangle 18" width="1.04" height="6.971" transform="translate(0 0)" fill="#fff"/>
+            </g>
+          </g>
+        </g>
+      </svg>
+    </a>
+  </div>
+
+  <!-- Footer -->
+  <footer>
+      Love Angular?&nbsp;
+      <a href="https://github.com/angular/angular" target="_blank" rel="noopener"> Give our repo a star.
+        <div class="github-star-badge">
+            <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 17.27L18.18 21l-1.64-7.03L22 9.24l-7.19-.61L12 2 9.19 8.63 2 9.24l5.46 4.73L5.82 21z"/></svg>
+          Star
+        </div>
+      </a>
+      <a href="https://github.com/angular/angular" target="_blank" rel="noopener">
+        <svg class="material-icons" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" fill="#1976d2"/><path d="M0 0h24v24H0z" fill="none"/></svg>
+      </a>
+  </footer>
+
+  <svg id="clouds" alt="Gray Clouds Background" xmlns="http://www.w3.org/2000/svg" width="2611.084" height="485.677" viewBox="0 0 2611.084 485.677">
+    <path id="Path_39" data-name="Path 39" d="M2379.709,863.793c10-93-77-171-168-149-52-114-225-105-264,15-75,3-140,59-152,133-30,2.83-66.725,9.829-93.5,26.25-26.771-16.421-63.5-23.42-93.5-26.25-12-74-77-130-152-133-39-120-212-129-264-15-54.084-13.075-106.753,9.173-138.488,48.9-31.734-39.726-84.4-61.974-138.487-48.9-52-114-225-105-264,15a162.027,162.027,0,0,0-103.147,43.044c-30.633-45.365-87.1-72.091-145.206-58.044-52-114-225-105-264,15-75,3-140,59-152,133-53,5-127,23-130,83-2,42,35,72,70,86,49,20,106,18,157,5a165.625,165.625,0,0,0,120,0c47,94,178,113,251,33,61.112,8.015,113.854-5.72,150.492-29.764a165.62,165.62,0,0,0,110.861-3.236c47,94,178,113,251,33,31.385,4.116,60.563,2.495,86.487-3.311,25.924,5.806,55.1,7.427,86.488,3.311,73,80,204,61,251-33a165.625,165.625,0,0,0,120,0c51,13,108,15,157-5a147.188,147.188,0,0,0,33.5-18.694,147.217,147.217,0,0,0,33.5,18.694c49,20,106,18,157,5a165.625,165.625,0,0,0,120,0c47,94,178,113,251,33C2446.709,1093.793,2554.709,922.793,2379.709,863.793Z" transform="translate(142.69 -634.312)" fill="#eee"/>
+  </svg>
+
+</div>
+
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+<!-- * * * * * * * * * * * The content above * * * * * * * * * * * -->
+<!-- * * * * * * * * * * is only a placeholder * * * * * * * * * * -->
+<!-- * * * * * * * * * * and can be replaced. * * * * * * * * * * * -->
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+<!-- * * * * * * * * * * End of Placeholder * * * * * * * * * * * -->
+<!-- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -->
+
+

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/app/app.component.spec.ts

@@ -0,0 +1,31 @@
+import { TestBed, async } from '@angular/core/testing';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [AppComponent],
+    }).compileComponents();
+  }));
+
+  it('should create the app', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app).toBeTruthy();
+  });
+
+  it(`should have as title 'angular'`, () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app.title).toEqual('angular');
+  });
+
+  it('should render title', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.debugElement.nativeElement;
+    expect(compiled.querySelector('.content span').textContent).toContain(
+      'angular app is running!'
+    );
+  });
+});

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/app/app.component.ts

@@ -0,0 +1,10 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-root',
+  templateUrl: './app.component.html',
+  styleUrls: ['./app.component.css'],
+})
+export class AppComponent {
+  title = 'angular';
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/app/app.module.ts

@@ -0,0 +1,12 @@
+import { BrowserModule } from '@angular/platform-browser';
+import { NgModule } from '@angular/core';
+
+import { AppComponent } from './app.component';
+
+@NgModule({
+  declarations: [AppComponent],
+  imports: [BrowserModule],
+  providers: [],
+  bootstrap: [AppComponent],
+})
+export class AppModule {}

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/environments/environment.prod.ts

@@ -0,0 +1,3 @@
+export const environment = {
+  production: true,
+};

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/environments/environment.ts

@@ -0,0 +1,16 @@
+// This file can be replaced during build by using the `fileReplacements` array.
+// `ng build --prod` replaces `environment.ts` with `environment.prod.ts`.
+// The list of file replacements can be found in `angular.json`.
+
+export const environment = {
+  production: false,
+};
+
+/*
+ * For easier debugging in development mode, you can import the following file
+ * to ignore zone related error stack frames such as `zone.run`, `zoneDelegate.invokeTask`.
+ *
+ * This import should be commented out in production mode because it will have a negative impact
+ * on performance if an error is thrown.
+ */
+// import 'zone.js/dist/zone-error';  // Included with Angular CLI.

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>Angular</title>
+  <base href="/">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="icon" type="image/x-icon" href="favicon.ico">
+</head>
+<body>
+  <app-root></app-root>
+</body>
+</html>

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/main.ts

@@ -0,0 +1,13 @@
+import { enableProdMode } from '@angular/core';
+import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
+
+import { AppModule } from './app/app.module';
+import { environment } from './environments/environment';
+
+if (environment.production) {
+  enableProdMode();
+}
+
+platformBrowserDynamic()
+  .bootstrapModule(AppModule)
+  .catch(err => console.error(err));

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/polyfills.ts

@@ -0,0 +1,62 @@
+/**
+ * This file includes polyfills needed by Angular and is loaded before the app.
+ * You can add your own extra polyfills to this file.
+ *
+ * This file is divided into 2 sections:
+ *   1. Browser polyfills. These are applied before loading ZoneJS and are sorted by browsers.
+ *   2. Application imports. Files imported after ZoneJS that should be loaded before your main
+ *      file.
+ *
+ * The current setup is for so-called "evergreen" browsers; the last versions of browsers that
+ * automatically update themselves. This includes Safari >= 10, Chrome >= 55 (including Opera),
+ * Edge >= 13 on the desktop, and iOS 10 and Chrome on mobile.
+ *
+ * Learn more in https://angular.io/guide/browser-support
+ */
+
+/***************************************************************************************************
+ * BROWSER POLYFILLS
+ */
+
+/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+// import 'classlist.js';  // Run `npm install --save classlist.js`.
+
+/**
+ * Web Animations `@angular/platform-browser/animations`
+ * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
+ * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
+ */
+// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
+
+/**
+ * By default, zone.js will patch all possible macroTask and DomEvents
+ * user can disable parts of macroTask/DomEvents patch by setting following flags
+ * because those flags need to be set before `zone.js` being loaded, and webpack
+ * will put import in the top of bundle, so user need to create a separate file
+ * in this directory (for example: zone-flags.ts), and put the following flags
+ * into that file, and then add the following code before importing zone.js.
+ * import './zone-flags.ts';
+ *
+ * The flags allowed in zone-flags.ts are listed here.
+ *
+ * The following flags will work for all browsers.
+ *
+ * (window as any).__Zone_disable_requestAnimationFrame = true; // disable patch requestAnimationFrame
+ * (window as any).__Zone_disable_on_property = true; // disable patch onProperty such as onclick
+ * (window as any).__zone_symbol__UNPATCHED_EVENTS = ['scroll', 'mousemove']; // disable patch specified eventNames
+ *
+ *  in IE/Edge developer tools, the addEventListener will also be wrapped by zone.js
+ *  with the following flag, it will bypass `zone.js` patch for IE/Edge
+ *
+ *  (window as any).__Zone_enable_cross_context_check = true;
+ *
+ */
+
+/***************************************************************************************************
+ * Zone JS is required by default for Angular itself.
+ */
+import 'zone.js/dist/zone'; // Included with Angular CLI.
+
+/***************************************************************************************************
+ * APPLICATION IMPORTS
+ */

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/styles.css

@@ -0,0 +1 @@
+/* You can add global styles to this file, and also import other style files */

packages/now-build-utils/test/fixtures/03-zero-config-angular/src/test.ts

@@ -0,0 +1,20 @@
+// This file is required by karma.conf.js and loads recursively all the .spec and framework files
+
+import 'zone.js/dist/zone-testing';
+import { getTestBed } from '@angular/core/testing';
+import {
+  BrowserDynamicTestingModule,
+  platformBrowserDynamicTesting,
+} from '@angular/platform-browser-dynamic/testing';
+
+declare const require: any;
+
+// First, initialize the Angular testing environment.
+getTestBed().initTestEnvironment(
+  BrowserDynamicTestingModule,
+  platformBrowserDynamicTesting()
+);
+// Then we find all the tests.
+const context = require.context('./', true, /\.spec\.ts$/);
+// And load the modules.
+context.keys().map(context);

packages/now-build-utils/test/fixtures/03-zero-config-angular/tsconfig.app.json

@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/app",
+    "types": []
+  },
+  "files": ["src/main.ts", "src/polyfills.ts"],
+  "include": ["src/**/*.ts"],
+  "exclude": ["src/test.ts", "src/**/*.spec.ts"]
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compileOnSave": false,
+  "compilerOptions": {
+    "baseUrl": "./",
+    "outDir": "./dist/out-tsc",
+    "sourceMap": true,
+    "declaration": false,
+    "downlevelIteration": true,
+    "experimentalDecorators": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "importHelpers": true,
+    "target": "es2015",
+    "typeRoots": ["node_modules/@types"],
+    "lib": ["es2018", "dom"]
+  },
+  "angularCompilerOptions": {
+    "fullTemplateTypeCheck": true,
+    "strictInjectionParameters": true
+  }
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/tsconfig.spec.json

@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./out-tsc/spec",
+    "types": ["jasmine", "node"]
+  },
+  "files": ["src/test.ts", "src/polyfills.ts"],
+  "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
+}

packages/now-build-utils/test/fixtures/03-zero-config-angular/tslint.json

@@ -0,0 +1,57 @@
+{
+  "extends": "tslint:recommended",
+  "rules": {
+    "array-type": false,
+    "arrow-parens": false,
+    "deprecation": {
+      "severity": "warning"
+    },
+    "component-class-suffix": true,
+    "contextual-lifecycle": true,
+    "directive-class-suffix": true,
+    "directive-selector": [true, "attribute", "app", "camelCase"],
+    "component-selector": [true, "element", "app", "kebab-case"],
+    "import-blacklist": [true, "rxjs/Rx"],
+    "interface-name": false,
+    "max-classes-per-file": false,
+    "max-line-length": [true, 140],
+    "member-access": false,
+    "member-ordering": [
+      true,
+      {
+        "order": [
+          "static-field",
+          "instance-field",
+          "static-method",
+          "instance-method"
+        ]
+      }
+    ],
+    "no-consecutive-blank-lines": false,
+    "no-console": [true, "debug", "info", "time", "timeEnd", "trace"],
+    "no-empty": false,
+    "no-inferrable-types": [true, "ignore-params"],
+    "no-non-null-assertion": true,
+    "no-redundant-jsdoc": true,
+    "no-switch-case-fall-through": true,
+    "no-var-requires": false,
+    "object-literal-key-quotes": [true, "as-needed"],
+    "object-literal-sort-keys": false,
+    "ordered-imports": false,
+    "quotemark": [true, "single"],
+    "trailing-comma": false,
+    "no-conflicting-lifecycle": true,
+    "no-host-metadata-property": true,
+    "no-input-rename": true,
+    "no-inputs-metadata-property": true,
+    "no-output-native": true,
+    "no-output-on-prefix": true,
+    "no-output-rename": true,
+    "no-outputs-metadata-property": true,
+    "template-banana-in-box": true,
+    "template-no-negated-async": true,
+    "use-lifecycle-interface": true,
+    "use-pipe-transform-interface": true
+  },
+  "rulesDirectory": ["codelyzer"]
+}

packages/now-build-utils/test/fixtures/04-zero-config-brunch/.gitignore

@@ -0,0 +1,26 @@
+# Numerous always-ignore extensions
+*.diff
+*.err
+*.orig
+*.log
+*.rej
+*.swo
+*.swp
+*.vi
+*~
+*.sass-cache
+
+# OS or Editor folders
+.DS_Store
+.cache
+.project
+.settings
+.tmproj
+nbproject
+Thumbs.db
+
+# NPM packages folder.
+node_modules/
+
+# Brunch output folder.
+public/

packages/now-build-utils/test/fixtures/04-zero-config-brunch/README.md

@@ -0,0 +1,28 @@
+# Brunch + Babel/ES6
+
+This is a modern JS skeleton for [Brunch](http://brunch.io).
+
+## Installation
+
+Clone this repo manually or use `brunch new dir -s es6`
+
+## Getting started
+
+- Install (if you don't have them):
+  - [Node.js](http://nodejs.org): `brew install node` on OS X
+  - [Brunch](http://brunch.io): `npm install -g brunch`
+  - Brunch plugins and app dependencies: `npm install`
+- Run:
+  - `npm start` — watches the project with continuous rebuild. This will also launch HTTP server with [pushState](https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Manipulating_the_browser_history).
+  - `npm run build` — builds minified project for production
+- Learn:
+  - `public/` dir is fully auto-generated and served by HTTP server. Write your code in `app/` dir.
+  - Place static files you want to be copied from `app/assets/` to `public/`.
+  - [Brunch site](http://brunch.io), [Getting started guide](https://github.com/brunch/brunch-guide#readme)
+
+## ES-next
+
+To use proposed JS features not included into ES6, do this:
+
+- `npm install --save-dev babel-preset-stage-0`
+- in `brunch-config.js`, add the preset: `presets: ['latest', 'stage-0']`

packages/now-build-utils/test/fixtures/04-zero-config-brunch/app/assets/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width">
+  <title>Brunch</title>
+  <link rel="stylesheet" href="/app.css">
+  <script src="/vendor.js"></script>
+  <script src="/app.js"></script>
+  <script>require('initialize');</script>
+</head>
+<body>
+  <div class="brunch">
+    <a href="http://brunch.io"><img src="http://brunch.io/images/logo.png" alt="Brunch"></a>
+    <p>Bon Appétit.</p>
+  </div>
+</body>

packages/now-build-utils/test/fixtures/04-zero-config-brunch/app/initialize.js

@@ -0,0 +1,4 @@
+document.addEventListener('DOMContentLoaded', () => {
+  // do your setup here
+  console.log('Initialized app');
+});

packages/now-build-utils/test/fixtures/04-zero-config-brunch/app/styles.css

@@ -0,0 +1,6 @@
+.brunch {
+  font-family: -apple-system, Sans-Serif;
+  text-align: center;
+  font-size: 24pt;
+  color: #3f894a;
+}

packages/now-build-utils/test/fixtures/04-zero-config-brunch/brunch-config.js

@@ -0,0 +1,14 @@
+// See http://brunch.io for documentation.
+exports.files = {
+  javascripts: {
+    joinTo: {
+      'vendor.js': /^(?!app)/, // Files that are not in `app` dir.
+      'app.js': /^app/,
+    },
+  },
+  stylesheets: { joinTo: 'app.css' },
+};
+
+exports.plugins = {
+  babel: { presets: ['latest'] },
+};

packages/now-build-utils/test/fixtures/04-zero-config-brunch/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "brunch-app",
+  "description": "Brunch.io application",
+  "private": true,
+  "author": "Brunch",
+  "version": "0.0.1",
+  "repository": "",
+  "scripts": {
+    "start": "brunch watch --server",
+    "build": "brunch build --production"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "auto-reload-brunch": "^2",
+    "babel-brunch": "~6.0",
+    "babel-preset-latest": "^6",
+    "brunch": "^2",
+    "clean-css-brunch": "^2",
+    "uglify-js-brunch": "^2"
+  }
+}

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/.gitignore

@@ -0,0 +1,69 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# dotenv environment variable files
+.env*
+
+# gatsby files
+.cache/
+public
+
+# Mac files
+.DS_Store
+
+# Yarn
+yarn-error.log
+.pnp/
+.pnp.js
+# Yarn Integrity file
+.yarn-integrity

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/.prettierignore

@@ -0,0 +1,4 @@
+.cache
+package.json
+package-lock.json
+public

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/.prettierrc

@@ -0,0 +1,7 @@
+{
+  "endOfLine": "lf",
+  "semi": false,
+  "singleQuote": false,
+  "tabWidth": 2,
+  "trailingComma": "es5"
+}

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 gatsbyjs
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/README.md

@@ -0,0 +1,97 @@
+<!-- AUTO-GENERATED-CONTENT:START (STARTER) -->
+<p align="center">
+  <a href="https://www.gatsbyjs.org">
+    <img alt="Gatsby" src="https://www.gatsbyjs.org/monogram.svg" width="60" />
+  </a>
+</p>
+<h1 align="center">
+  Gatsby's default starter
+</h1>
+
+Kick off your project with this default boilerplate. This starter ships with the main Gatsby configuration files you might need to get up and running blazing fast with the blazing fast app generator for React.
+
+_Have another more specific idea? You may want to check out our vibrant collection of [official and community-created starters](https://www.gatsbyjs.org/docs/gatsby-starters/)._
+
+## 🚀 Quick start
+
+1.  **Create a Gatsby site.**
+
+    Use the Gatsby CLI to create a new site, specifying the default starter.
+
+    ```shell
+    # create a new Gatsby site using the default starter
+    gatsby new my-default-starter https://github.com/gatsbyjs/gatsby-starter-default
+    ```
+
+1.  **Start developing.**
+
+    Navigate into your new site’s directory and start it up.
+
+    ```shell
+    cd my-default-starter/
+    gatsby develop
+    ```
+
+1.  **Open the source code and start editing!**
+
+    Your site is now running at `http://localhost:8000`!
+
+    _Note: You'll also see a second link: _`http://localhost:8000/___graphql`_. This is a tool you can use to experiment with querying your data. Learn more about using this tool in the [Gatsby tutorial](https://www.gatsbyjs.org/tutorial/part-five/#introducing-graphiql)._
+
+    Open the `my-default-starter` directory in your code editor of choice and edit `src/pages/index.js`. Save your changes and the browser will update in real time!
+
+## 🧐 What's inside?
+
+A quick look at the top-level files and directories you'll see in a Gatsby project.
+
+    .
+    ├── node_modules
+    ├── src
+    ├── .gitignore
+    ├── .prettierrc
+    ├── gatsby-browser.js
+    ├── gatsby-config.js
+    ├── gatsby-node.js
+    ├── gatsby-ssr.js
+    ├── LICENSE
+    ├── package-lock.json
+    ├── package.json
+    └── README.md
+
+1.  **`/node_modules`**: This directory contains all of the modules of code that your project depends on (npm packages) are automatically installed.
+
+2.  **`/src`**: This directory will contain all of the code related to what you will see on the front-end of your site (what you see in the browser) such as your site header or a page template. `src` is a convention for “source code”.
+
+3.  **`.gitignore`**: This file tells git which files it should not track / not maintain a version history for.
+
+4.  **`.prettierrc`**: This is a configuration file for [Prettier](https://prettier.io/). Prettier is a tool to help keep the formatting of your code consistent.
+
+5.  **`gatsby-browser.js`**: This file is where Gatsby expects to find any usage of the [Gatsby browser APIs](https://www.gatsbyjs.org/docs/browser-apis/) (if any). These allow customization/extension of default Gatsby settings affecting the browser.
+
+6.  **`gatsby-config.js`**: This is the main configuration file for a Gatsby site. This is where you can specify information about your site (metadata) like the site title and description, which Gatsby plugins you’d like to include, etc. (Check out the [config docs](https://www.gatsbyjs.org/docs/gatsby-config/) for more detail).
+
+7.  **`gatsby-node.js`**: This file is where Gatsby expects to find any usage of the [Gatsby Node APIs](https://www.gatsbyjs.org/docs/node-apis/) (if any). These allow customization/extension of default Gatsby settings affecting pieces of the site build process.
+
+8.  **`gatsby-ssr.js`**: This file is where Gatsby expects to find any usage of the [Gatsby server-side rendering APIs](https://www.gatsbyjs.org/docs/ssr-apis/) (if any). These allow customization of default Gatsby settings affecting server-side rendering.
+
+9.  **`LICENSE`**: Gatsby is licensed under the MIT license.
+
+10. **`package-lock.json`** (See `package.json` below, first). This is an automatically generated file based on the exact versions of your npm dependencies that were installed for your project. **(You won’t change this file directly).**
+
+11. **`package.json`**: A manifest file for Node.js projects, which includes things like metadata (the project’s name, author, etc). This manifest is how npm knows which packages to install for your project.
+
+12. **`README.md`**: A text file containing useful reference information about your project.
+
+## 🎓 Learning Gatsby
+
+Looking for more guidance? Full documentation for Gatsby lives [on the website](https://www.gatsbyjs.org/). Here are some places to start:
+
+- **For most developers, we recommend starting with our [in-depth tutorial for creating a site with Gatsby](https://www.gatsbyjs.org/tutorial/).** It starts with zero assumptions about your level of ability and walks through every step of the process.
+
+- **To dive straight into code samples, head [to our documentation](https://www.gatsbyjs.org/docs/).** In particular, check out the _Guides_, _API Reference_, and _Advanced Tutorials_ sections in the sidebar.
+
+## 💫 Deploy
+
+[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/gatsbyjs/gatsby-starter-default)
+
+<!-- AUTO-GENERATED-CONTENT:END -->

packages/now-build-utils/test/fixtures/05-zero-config-gatsby/gatsby-browser.js

@@ -0,0 +1,7 @@
+/**
+ * Implement Gatsby's Browser APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/browser-apis/
+ */
+
+// You can delete this file if you're not using it