Publish Canary

- @vercel/build-utils@2.12.3-canary.32
 - vercel@23.1.3-canary.53
 - @vercel/client@10.2.3-canary.33
 - vercel-plugin-go@1.0.0-canary.20
 - vercel-plugin-node@1.12.2-canary.24
 - vercel-plugin-python@1.0.0-canary.21
 - vercel-plugin-ruby@1.0.0-canary.19

.eslintignore

@@ -1,11 +1,10 @@
 node_modules
 dist
 examples
-packages/build-utils/test/fixtures
+packages/*/test/fixtures
 packages/cli/@types
 packages/cli/download
 packages/cli/dist
-packages/cli/test/fixtures
 packages/cli/test/dev/fixtures
 packages/cli/bin
 packages/cli/link
@@ -13,6 +12,6 @@ packages/cli/src/util/dev/templates/*.ts
 packages/client/tests/fixtures
 packages/client/lib
 packages/node/src/bridge.ts
-packages/node/test/fixtures
 packages/node-bridge/bridge.js
 packages/node-bridge/launcher.js
+packages/middleware/src/entries.js

.github/ISSUE_TEMPLATE/config.yml

@@ -1,4 +1,4 @@
-blank_issues_enabled: false
+blank_issues_enabled: true
 contact_links:
   - name: Bug Report
     url: https://vercel.com/support/request

.github/workflows/cancel.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 2
     steps:
-      - uses: styfle/cancel-workflow-action@0.4.1
+      - uses: styfle/cancel-workflow-action@0.9.1
         with:
           workflow_id: 849295, 849296, 849297, 849298
           access_token: ${{ github.token }}

.github/workflows/publish.yml

@@ -29,6 +29,6 @@ jobs:
     - name: Publish
       run: yarn publish-from-github
       env:
-        NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        NPM_TOKEN: ${{ secrets.NPM_TOKEN_ELEVATED }}
         GA_TRACKING_ID: ${{ secrets.GA_TRACKING_ID }}
         SENTRY_DSN: ${{ secrets.SENTRY_DSN }}

.github/workflows/test-integration-dev.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   test:
     name: Dev
-    timeout-minutes: 60
+    timeout-minutes: 75
     strategy:
       fail-fast: false
       matrix:

.gitignore

@@ -27,3 +27,4 @@ test/lib/deployment/failed-page.txt
 /public
 __pycache__
 .vercel
+.output

DEVELOPING_A_RUNTIME.md

@@ -332,7 +332,7 @@ This is an abstract enumeration type that is implemented by one of the following
 - `nodejs10.x`
 - `go1.x`
 - `java11`
-- `python3.8`
+- `python3.9`
 - `python3.6`
 - `dotnetcore2.1`
 - `ruby2.5`
@@ -398,12 +398,12 @@ This utility allows you to _scan_ the filesystem and return a [`Files`](#files)
 The following trivial example downloads everything to the filesystem, only to return it back (therefore just re-creating the passed-in [`Files`](#files)):
 
 ```js
-const { glob, download } = require('@vercel/build-utils')
+const { glob, download } = require('@vercel/build-utils');
 
 exports.build = ({ files, workPath }) => {
-  await download(files, workPath)
-  return glob('**', workPath)
-}
+  await download(files, workPath);
+  return glob('**', workPath);
+};
 ```
 
 ### `getWritableDirectory()`

api/frameworks.ts

@@ -14,8 +14,6 @@ const frameworks = (_frameworks as Framework[])
       sort: undefined,
       dependency: undefined,
       defaultRoutes: undefined,
-      devCommand: undefined,
-      buildCommand: undefined,
     };
 
     if (framework.logo) {

api/package.json

@@ -5,7 +5,7 @@
   "description": "API for the vercel/vercel repo",
   "main": "index.js",
   "scripts": {
-    "vercel-build": "yarn --cwd .. && node ../utils/run.js build all"
+    "vercel-build": "node ../utils/run.js build all"
   },
   "dependencies": {
     "@sentry/node": "5.11.1",

codecov.yml

@@ -6,3 +6,5 @@ coverage:
     project: off
     patch: off
 
+fixes:
+  - "::packages/cli/"         # move root   e.g., "path/" => "after/path/"

examples/angular/package.json

@@ -12,37 +12,38 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "~8.1.0",
-    "@angular/common": "~8.1.0",
-    "@angular/compiler": "~8.1.0",
-    "@angular/core": "~8.1.0",
-    "@angular/forms": "~8.1.0",
-    "@angular/platform-browser": "~8.1.0",
-    "@angular/platform-browser-dynamic": "~8.1.0",
-    "@angular/router": "~8.1.0",
+    "@angular/animations": "^8.1.0",
+    "@angular/common": "^8.1.0",
+    "@angular/core": "^8.1.0",
+    "@angular/forms": "^8.1.0",
+    "@angular/platform-browser": "^8.1.0",
+    "@angular/platform-browser-dynamic": "^8.1.0",
+    "@angular/router": "^8.1.0",
     "rxjs": "~6.4.0",
     "tslib": "^1.9.0",
     "zone.js": "~0.9.1"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "~0.801.0",
-    "@angular/cli": "~8.1.0",
-    "@angular/compiler-cli": "~8.1.0",
+    "@angular-devkit/build-angular": "^12.2.2",
+    "@angular/cli": "^12.2.2",
+    "@angular/compiler": "^12.2.2",
+    "@angular/compiler-cli": "^12.2.2",
     "@angular/language-service": "~8.1.0",
-    "@types/node": "~8.9.4",
     "@types/jasmine": "~3.3.8",
     "@types/jasminewd2": "~2.0.3",
+    "@types/node": "~8.9.4",
     "codelyzer": "^5.0.0",
-    "jasmine-core": "~3.4.0",
+    "glob-parent": "^5.1.2",
+    "jasmine-core": "^3.4.0",
     "jasmine-spec-reporter": "~4.2.1",
-    "karma": "~4.1.0",
+    "karma": "^6.3.4",
     "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",
+    "protractor": "^7.0.0",
     "ts-node": "~7.0.0",
     "tslint": "~5.15.0",
-    "typescript": "~3.4.3"
+    "typescript": "^4.2.4"
   }
 }

examples/nextjs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "nextjs",
-  "version": "0.1.0",
+  "version": "1.0.0",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -9,7 +9,7 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "next": "11.1.0",
+    "next": "12.0.1",
     "react": "17.0.2",
     "react-dom": "17.0.2"
   },

examples/parcel/.gitignore

@@ -0,0 +1,7 @@
+node_modules
+.parcel-cache
+dist
+/.pnp
+.pnp.js
+.DS_Store
+.vercel

examples/parcel/README.md

@@ -0,0 +1,34 @@
+This is a vanilla web app built with [Parcel](https://parceljs.org).
+
+## Getting Started
+
+Run the dev server:
+
+```bash
+yarn start
+# or
+npm start
+```
+
+And open [localhost:1234](http://localhost:1234) in your browser!
+
+As you make changes, you should see your app automatically update in the browser without even refreshing the page!
+
+## Learn More
+
+- [Getting started guide](https://parceljs.org/getting-started/webapp/)
+- [Documentation](https://parceljs.org/docs/)
+
+## Deploy Your Own
+
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https://github.com/vercel/vercel/tree/main/examples/parcel&template=parcel)
+
+_Live Example: https://parcel.examples.vercel.com_
+
+### Deploying From Your Terminal
+
+You can deploy your new Parcel project with a single command from your terminal using [Vercel CLI](https://vercel.com/download):
+
+```shell
+$ vercel
+```

examples/parcel/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "parcel-app",
+  "private": true,
+  "source": "src/index.html",
+  "scripts": {
+    "start": "parcel",
+    "build": "parcel build"
+  },
+  "devDependencies": {
+    "parcel": "^2.0.0"
+  }
+}

examples/parcel/src/app.js

@@ -0,0 +1 @@
+console.log('Hello world!');

examples/parcel/src/index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8"/>
+    <title>My First Parcel App</title>
+    <link rel="stylesheet" href="styles.css" />
+    <script type="module" src="app.js"></script>
+  </head>
+  <body>
+    <h1>Hello, Parcel!</h1>
+    <p>This is a vanilla web app built with Parcel 2!<br>Check out the <a href="https://parceljs.org/getting-started/webapp/" target="_blank">getting started guide</a> and the <a href="https://parceljs.org/docs/" target="_blank">documentation</a> to learn more!</p>
+  </body>
+</html>

examples/parcel/src/styles.css

@@ -0,0 +1,18 @@
+body {
+  text-align: center;
+}
+
+h1 {
+  color: hotpink;
+  font-family: cursive;
+  font-size: 55px;
+}
+
+p {
+  font-family: Helvetica, Arial, sans-serif;
+  line-height: 1.5em;
+}
+
+a {
+  color: dodgerblue;
+}

examples/remix/.gitignore

@@ -0,0 +1,8 @@
+node_modules
+
+.cache
+.vercel
+.output
+
+public/build
+api/_build

examples/remix/README.md

@@ -0,0 +1,34 @@
+# Welcome to Remix!
+
+- [Remix Docs](https://remix.run/docs)
+
+## Deployment
+
+After having run the `create-remix` command and selected "Vercel" as a deployment target, you only need to [import your Git repository](https://vercel.com/new) into Vercel, and it will be deployed.
+
+If you'd like to avoid using a Git repository, you can also deploy the directory by running [Vercel CLI](https://vercel.com/cli):
+
+```sh
+npm i -g vercel
+vercel
+```
+
+It is generally recommended to use a Git repository, because future commits will then automatically be deployed by Vercel, through its [Git Integration](https://vercel.com/docs/concepts/git).
+
+## Development
+
+To run your Remix app locally, make sure your project's local dependencies are installed:
+
+```sh
+npm install
+```
+
+Afterwards, start the Remix development server like so:
+
+```sh
+npm run dev
+```
+
+Open up [http://localhost:3000](http://localhost:3000) and you should be ready to go!
+
+If you're used to using the `vercel dev` command provided by [Vercel CLI](https://vercel.com/cli) instead, you can also use that, but it's not needed.

examples/remix/api/index.js

@@ -0,0 +1,5 @@
+const { createRequestHandler } = require("@remix-run/vercel");
+
+module.exports = createRequestHandler({
+  build: require("./_build")
+});

examples/remix/app/entry.client.tsx

@@ -0,0 +1,4 @@
+import { hydrate } from "react-dom";
+import { RemixBrowser } from "remix";
+
+hydrate(<RemixBrowser />, document);

examples/remix/app/entry.server.tsx

@@ -0,0 +1,21 @@
+import { renderToString } from "react-dom/server";
+import { RemixServer } from "remix";
+import type { EntryContext } from "remix";
+
+export default function handleRequest(
+  request: Request,
+  responseStatusCode: number,
+  responseHeaders: Headers,
+  remixContext: EntryContext
+) {
+  let markup = renderToString(
+    <RemixServer context={remixContext} url={request.url} />
+  );
+
+  responseHeaders.set("Content-Type", "text/html");
+
+  return new Response("<!DOCTYPE html>" + markup, {
+    status: responseStatusCode,
+    headers: responseHeaders
+  });
+}

examples/remix/app/root.tsx

@@ -0,0 +1,178 @@
+import {
+  Link,
+  Links,
+  LiveReload,
+  Meta,
+  Outlet,
+  Scripts,
+  ScrollRestoration,
+  useCatch
+} from "remix";
+import type { LinksFunction } from "remix";
+
+import globalStylesUrl from "~/styles/global.css";
+import darkStylesUrl from "~/styles/dark.css";
+
+// https://remix.run/api/app#links
+export let links: LinksFunction = () => {
+  return [
+    { rel: "stylesheet", href: globalStylesUrl },
+    {
+      rel: "stylesheet",
+      href: darkStylesUrl,
+      media: "(prefers-color-scheme: dark)"
+    }
+  ];
+};
+
+// https://remix.run/api/conventions#default-export
+// https://remix.run/api/conventions#route-filenames
+export default function App() {
+  return (
+    <Document>
+      <Layout>
+        <Outlet />
+      </Layout>
+    </Document>
+  );
+}
+
+// https://remix.run/docs/en/v1/api/conventions#errorboundary
+export function ErrorBoundary({ error }: { error: Error }) {
+  console.error(error);
+  return (
+    <Document title="Error!">
+      <Layout>
+        <div>
+          <h1>There was an error</h1>
+          <p>{error.message}</p>
+          <hr />
+          <p>
+            Hey, developer, you should replace this with what you want your
+            users to see.
+          </p>
+        </div>
+      </Layout>
+    </Document>
+  );
+}
+
+// https://remix.run/docs/en/v1/api/conventions#catchboundary
+export function CatchBoundary() {
+  let caught = useCatch();
+
+  let message;
+  switch (caught.status) {
+    case 401:
+      message = (
+        <p>
+          Oops! Looks like you tried to visit a page that you do not have access
+          to.
+        </p>
+      );
+      break;
+    case 404:
+      message = (
+        <p>Oops! Looks like you tried to visit a page that does not exist.</p>
+      );
+      break;
+
+    default:
+      throw new Error(caught.data || caught.statusText);
+  }
+
+  return (
+    <Document title={`${caught.status} ${caught.statusText}`}>
+      <Layout>
+        <h1>
+          {caught.status}: {caught.statusText}
+        </h1>
+        {message}
+      </Layout>
+    </Document>
+  );
+}
+
+function Document({
+  children,
+  title
+}: {
+  children: React.ReactNode;
+  title?: string;
+}) {
+  return (
+    <html lang="en">
+      <head>
+        <meta charSet="utf-8" />
+        <meta name="viewport" content="width=device-width,initial-scale=1" />
+        {title ? <title>{title}</title> : null}
+        <Meta />
+        <Links />
+      </head>
+      <body>
+        {children}
+        <ScrollRestoration />
+        <Scripts />
+        {process.env.NODE_ENV === "development" && <LiveReload />}
+      </body>
+    </html>
+  );
+}
+
+function Layout({ children }: { children: React.ReactNode }) {
+  return (
+    <div className="remix-app">
+      <header className="remix-app__header">
+        <div className="container remix-app__header-content">
+          <Link to="/" title="Remix" className="remix-app__header-home-link">
+            <RemixLogo />
+          </Link>
+          <nav aria-label="Main navigation" className="remix-app__header-nav">
+            <ul>
+              <li>
+                <Link to="/">Home</Link>
+              </li>
+              <li>
+                <a href="https://remix.run/docs">Remix Docs</a>
+              </li>
+              <li>
+                <a href="https://github.com/remix-run/remix">GitHub</a>
+              </li>
+            </ul>
+          </nav>
+        </div>
+      </header>
+      <div className="remix-app__main">
+        <div className="container remix-app__main-content">{children}</div>
+      </div>
+      <footer className="remix-app__footer">
+        <div className="container remix-app__footer-content">
+          <p>&copy; You!</p>
+        </div>
+      </footer>
+    </div>
+  );
+}
+
+function RemixLogo() {
+  return (
+    <svg
+      viewBox="0 0 659 165"
+      version="1.1"
+      xmlns="http://www.w3.org/2000/svg"
+      xmlnsXlink="http://www.w3.org/1999/xlink"
+      aria-labelledby="remix-run-logo-title"
+      role="img"
+      width="106"
+      height="30"
+      fill="currentColor"
+    >
+      <title id="remix-run-logo-title">Remix Logo</title>
+      <path d="M0 161V136H45.5416C53.1486 136 54.8003 141.638 54.8003 145V161H0Z M133.85 124.16C135.3 142.762 135.3 151.482 135.3 161H92.2283C92.2283 158.927 92.2653 157.03 92.3028 155.107C92.4195 149.128 92.5411 142.894 91.5717 130.304C90.2905 111.872 82.3473 107.776 67.7419 107.776H54.8021H0V74.24H69.7918C88.2407 74.24 97.4651 68.632 97.4651 53.784C97.4651 40.728 88.2407 32.816 69.7918 32.816H0V0H77.4788C119.245 0 140 19.712 140 51.2C140 74.752 125.395 90.112 105.665 92.672C122.32 96 132.057 105.472 133.85 124.16Z" />
+      <path d="M229.43 120.576C225.59 129.536 218.422 133.376 207.158 133.376C194.614 133.376 184.374 126.72 183.35 112.64H263.478V101.12C263.478 70.1437 243.254 44.0317 205.11 44.0317C169.526 44.0317 142.902 69.8877 142.902 105.984C142.902 142.336 169.014 164.352 205.622 164.352C235.83 164.352 256.822 149.76 262.71 123.648L229.43 120.576ZM183.862 92.6717C185.398 81.9197 191.286 73.7277 204.598 73.7277C216.886 73.7277 223.542 82.4317 224.054 92.6717H183.862Z" />
+      <path d="M385.256 66.5597C380.392 53.2477 369.896 44.0317 349.672 44.0317C332.52 44.0317 320.232 51.7117 314.088 64.2557V47.1037H272.616V161.28H314.088V105.216C314.088 88.0638 318.952 76.7997 332.52 76.7997C345.064 76.7997 348.136 84.9917 348.136 100.608V161.28H389.608V105.216C389.608 88.0638 394.216 76.7997 408.04 76.7997C420.584 76.7997 423.4 84.9917 423.4 100.608V161.28H464.872V89.5997C464.872 65.7917 455.656 44.0317 424.168 44.0317C404.968 44.0317 391.4 53.7597 385.256 66.5597Z" />
+      <path d="M478.436 47.104V161.28H519.908V47.104H478.436ZM478.18 36.352H520.164V0H478.18V36.352Z" />
+      <path d="M654.54 47.1035H611.788L592.332 74.2395L573.388 47.1035H527.564L568.78 103.168L523.98 161.28H566.732L589.516 130.304L612.3 161.28H658.124L613.068 101.376L654.54 47.1035Z" />
+    </svg>
+  );
+}

examples/remix/app/routes/demos/about.tsx

@@ -0,0 +1,44 @@
+import { Outlet } from "remix";
+import type { MetaFunction, LinksFunction } from "remix";
+
+import stylesUrl from "~/styles/demos/about.css";
+
+export let meta: MetaFunction = () => {
+  return {
+    title: "About Remix"
+  };
+};
+
+export let links: LinksFunction = () => {
+  return [{ rel: "stylesheet", href: stylesUrl }];
+};
+
+export default function Index() {
+  return (
+    <div className="about">
+      <div className="about__intro">
+        <h2>About Us</h2>
+        <p>
+          Ok, so this page isn't really <em>about us</em>, but we did want to
+          show you a few more things Remix can do.
+        </p>
+        <p>
+          Did you notice that things look a little different on this page? The
+          CSS that we import in the route file and include in its{" "}
+          <code>links</code> export is only included on this route and its
+          children.
+        </p>
+        <p>
+          Wait a sec...<em>its children</em>? To understand what we mean by
+          this,{" "}
+          <a href="https://remix.run/tutorial/4-nested-routes-params">
+            read all about nested routes in the docs
+          </a>
+          .
+        </p>
+        <hr />
+        <Outlet />
+      </div>
+    </div>
+  );
+}

examples/remix/app/routes/demos/about/index.tsx

@@ -0,0 +1,17 @@
+import { Link } from "remix";
+
+export default function AboutIndex() {
+  return (
+    <div>
+      <p>
+        You are looking at the index route for the <code>/about</code> URL
+        segment, but there are nested routes as well!
+      </p>
+      <p>
+        <strong>
+          <Link to="whoa">Check out one of them here.</Link>
+        </strong>
+      </p>
+    </div>
+  );
+}

examples/remix/app/routes/demos/about/whoa.tsx

@@ -0,0 +1,20 @@
+import { Link } from "remix";
+
+export default function AboutIndex() {
+  return (
+    <div>
+      <p>
+        Whoa, this is a nested route! We render the <code>/about</code> layout
+        route component, and its <code>Outlet</code> renders our route
+        component. 🤯
+      </p>
+      <p>
+        <strong>
+          <Link to="..">
+            Go back to the <code>/about</code> index.
+          </Link>
+        </strong>
+      </p>
+    </div>
+  );
+}

examples/remix/app/routes/demos/actions.tsx

@@ -0,0 +1,101 @@
+import { useEffect, useRef } from "react";
+import type { ActionFunction } from "remix";
+import { Form, json, useActionData, redirect } from "remix";
+
+export function meta() {
+  return { title: "Actions Demo" };
+}
+
+// When your form sends a POST, the action is called on the server.
+// - https://remix.run/api/conventions#action
+// - https://remix.run/guides/data-updates
+export let action: ActionFunction = async ({ request }) => {
+  let formData = await request.formData();
+  let answer = formData.get("answer");
+
+  // Typical action workflows start with validating the form data that just came
+  // over the network. Clientside validation is fine, but you definitely need it
+  // server side.  If there's a problem, return the the data and the component
+  // can render it.
+  if (typeof answer !== "string") {
+    return json("Come on, at least try!", { status: 400 });
+  }
+
+  if (answer !== "egg") {
+    return json(`Sorry, ${answer} is not right.`, { status: 400 });
+  }
+
+  // Finally, if the data is valid, you'll typically write to a database or send or
+  // email or log the user in, etc. It's recommended to redirect after a
+  // successful action, even if it's to the same place so that non-JavaScript workflows
+  // from the browser doesn't repost the data if the user clicks back.
+  return redirect("/demos/correct");
+};
+
+export default function ActionsDemo() {
+  // https://remix.run/api/remix#useactiondata
+  let actionMessage = useActionData<string>();
+  let answerRef = useRef<HTMLInputElement>(null);
+
+  // This form works without JavaScript, but when we have JavaScript we can make
+  // the experience better by selecting the input on wrong answers! Go ahead, disable
+  // JavaScript in your browser and see what happens.
+  useEffect(() => {
+    if (actionMessage && answerRef.current) {
+      answerRef.current.select();
+    }
+  }, [actionMessage]);
+
+  return (
+    <div className="remix__page">
+      <main>
+        <h2>Actions!</h2>
+        <p>
+          This form submission will send a post request that we handle in our
+          `action` export. Any route can export an action to handle data
+          mutations.
+        </p>
+        <Form method="post" className="remix__form">
+          <h3>Post an Action</h3>
+          <p>
+            <i>What is more useful when it is broken?</i>
+          </p>
+          <label>
+            <div>Answer:</div>
+            <input ref={answerRef} name="answer" type="text" />
+          </label>
+          <div>
+            <button>Answer!</button>
+          </div>
+          {actionMessage ? (
+            <p>
+              <b>{actionMessage}</b>
+            </p>
+          ) : null}
+        </Form>
+      </main>
+
+      <aside>
+        <h3>Additional Resources</h3>
+        <ul>
+          <li>
+            Guide:{" "}
+            <a href="https://remix.run/guides/data-writes">Data Writes</a>
+          </li>
+          <li>
+            API:{" "}
+            <a href="https://remix.run/api/conventions#action">
+              Route Action Export
+            </a>
+          </li>
+          <li>
+            API:{" "}
+            <a href="https://remix.run/api/remix#useactiondata">
+              <code>useActionData</code>
+            </a>
+          </li>
+        </ul>
+      </aside>
+    </div>
+  );
+}

examples/remix/app/routes/demos/correct.tsx

@@ -0,0 +1,3 @@
+export default function NiceWork() {
+  return <h1>You got it right!</h1>;
+}

examples/remix/app/routes/demos/params.tsx

@@ -0,0 +1,43 @@
+import { useCatch, Link, json, useLoaderData, Outlet } from "remix";
+
+export function meta() {
+  return { title: "Boundaries Demo" };
+}
+
+export default function Boundaries() {
+  return (
+    <div className="remix__page">
+      <main>
+        <Outlet />
+      </main>
+
+      <aside>
+        <h2>Click these Links</h2>
+        <ul>
+          <li>
+            <Link to=".">Start over</Link>
+          </li>
+          <li>
+            <Link to="one">
+              Param: <i>one</i>
+            </Link>
+          </li>
+          <li>
+            <Link to="two">
+              Param: <i>two</i>
+            </Link>
+          </li>
+          <li>
+            <Link to="this-record-does-not-exist">This will be a 404</Link>
+          </li>
+          <li>
+            <Link to="shh-its-a-secret">And this will be 401 Unauthorized</Link>
+          </li>
+          <li>
+            <Link to="kaboom">This one will throw an error</Link>
+          </li>
+        </ul>
+      </aside>
+    </div>
+  );
+}

examples/remix/app/routes/demos/params/$id.tsx

@@ -0,0 +1,110 @@
+import { useCatch, Link, json, useLoaderData } from "remix";
+import type { LoaderFunction, MetaFunction } from "remix";
+
+// The `$` in route filenames becomes a pattern that's parsed from the URL and
+// passed to your loaders so you can look up data.
+// - https://remix.run/api/conventions#loader-params
+export let loader: LoaderFunction = async ({ params }) => {
+  // pretend like we're using params.id to look something up in the db
+
+  if (params.id === "this-record-does-not-exist") {
+    // If the record doesn't exist we can't render the route normally, so
+    // instead we throw a 404 reponse to stop running code here and show the
+    // user the catch boundary.
+    throw new Response("Not Found", { status: 404 });
+  }
+
+  // now pretend like the record exists but the user just isn't authorized to
+  // see it.
+  if (params.id === "shh-its-a-secret") {
+    // Again, we can't render the component if the user isn't authorized. You
+    // can even put data in the response that might help the user rectify the
+    // issue! Like emailing the webmaster for access to the page. (Oh, right,
+    // `json` is just a Response helper that makes it easier to send JSON
+    // responses).
+    throw json({ webmasterEmail: "hello@remix.run" }, { status: 401 });
+  }
+
+  // Sometimes your code just blows up and you never anticipated it. Remix will
+  // automatically catch it and send the UI to the error boundary.
+  if (params.id === "kaboom") {
+    lol();
+  }
+
+  // but otherwise the record was found, user has access, so we can do whatever
+  // else we needed to in the loader and return the data. (This is boring, we're
+  // just gonna return the params.id).
+  return { param: params.id };
+};
+
+export default function ParamDemo() {
+  let data = useLoaderData();
+  return (
+    <h1>
+      The param is <i style={{ color: "red" }}>{data.param}</i>
+    </h1>
+  );
+}
+
+// https://remix.run/api/conventions#catchboundary
+// https://remix.run/api/remix#usecatch
+// https://remix.run/api/guides/not-found
+export function CatchBoundary() {
+  let caught = useCatch();
+
+  let message: React.ReactNode;
+  switch (caught.status) {
+    case 401:
+      message = (
+        <p>
+          Looks like you tried to visit a page that you do not have access to.
+          Maybe ask the webmaster ({caught.data.webmasterEmail}) for access.
+        </p>
+      );
+    case 404:
+      message = (
+        <p>Looks like you tried to visit a page that does not exist.</p>
+      );
+    default:
+      message = (
+        <p>
+          There was a problem with your request!
+          <br />
+          {caught.status} {caught.statusText}
+        </p>
+      );
+  }
+
+  return (
+    <>
+      <h2>Oops!</h2>
+      <p>{message}</p>
+      <p>
+        (Isn't it cool that the user gets to stay in context and try a different
+        link in the parts of the UI that didn't blow up?)
+      </p>
+    </>
+  );
+}
+
+// https://remix.run/api/conventions#errorboundary
+// https://remix.run/api/guides/not-found
+export function ErrorBoundary({ error }: { error: Error }) {
+  console.error(error);
+  return (
+    <>
+      <h2>Error!</h2>
+      <p>{error.message}</p>
+      <p>
+        (Isn't it cool that the user gets to stay in context and try a different
+        link in the parts of the UI that didn't blow up?)
+      </p>
+    </>
+  );
+}
+
+export let meta: MetaFunction = ({ data }) => {
+  return {
+    title: data ? `Param: ${data.param}` : "Oops...",
+  };
+};

examples/remix/app/routes/demos/params/index.tsx

@@ -0,0 +1,40 @@
+import { useCatch, Link, json, useLoaderData, Outlet } from "remix";
+import type { LoaderFunction } from "remix";
+
+export default function Boundaries() {
+  return (
+    <>
+      <h2>Params</h2>
+      <p>
+        When you name a route segment with $ like{" "}
+        <code>routes/users/$userId.js</code>, the $ segment will be parsed from
+        the URL and sent to your loaders and actions by the same name.
+      </p>
+      <h2>Errors</h2>
+      <p>
+        When a route throws and error in it's action, loader, or component,
+        Remix automatically catches it, won't even try to render the component,
+        but it will render the route's ErrorBoundary instead. If the route
+        doesn't have one, it will bubble up to the routes above it until it hits
+        the root.
+      </p>
+      <p>So be as granular as you want with your error handling.</p>
+      <h2>Not Found</h2>
+      <p>
+        (and other{" "}
+        <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status#client_error_responses">
+          client errors
+        </a>
+        )
+      </p>
+      <p>
+        Loaders and Actions can throw a <code>Response</code> instead of an
+        error and Remix will render the CatchBoundary instead of the component.
+        This is great when loading data from a database isn't found. As soon as
+        you know you can't render the component normally, throw a 404 response
+        and send your app into the catch boundary. Just like error boundaries,
+        catch boundaries bubble, too.
+      </p>
+    </>
+  );
+}

examples/remix/app/routes/index.tsx

@@ -0,0 +1,100 @@
+import type { MetaFunction, LoaderFunction } from "remix";
+import { useLoaderData, json, Link } from "remix";
+
+type IndexData = {
+  resources: Array<{ name: string; url: string }>;
+  demos: Array<{ name: string; to: string }>;
+};
+
+// Loaders provide data to components and are only ever called on the server, so
+// you can connect to a database or run any server side code you want right next
+// to the component that renders it.
+// https://remix.run/api/conventions#loader
+export let loader: LoaderFunction = () => {
+  let data: IndexData = {
+    resources: [
+      {
+        name: "Remix Docs",
+        url: "https://remix.run/docs"
+      },
+      {
+        name: "React Router Docs",
+        url: "https://reactrouter.com/docs"
+      },
+      {
+        name: "Remix Discord",
+        url: "https://discord.gg/VBePs6d"
+      }
+    ],
+    demos: [
+      {
+        to: "demos/actions",
+        name: "Actions"
+      },
+      {
+        to: "demos/about",
+        name: "Nested Routes, CSS loading/unloading"
+      },
+      {
+        to: "demos/params",
+        name: "URL Params and Error Boundaries"
+      }
+    ]
+  };
+
+  // https://remix.run/api/remix#json
+  return json(data);
+};
+
+// https://remix.run/api/conventions#meta
+export let meta: MetaFunction = () => {
+  return {
+    title: "Remix Starter",
+    description: "Welcome to remix!"
+  };
+};
+
+// https://remix.run/guides/routing#index-routes
+export default function Index() {
+  let data = useLoaderData<IndexData>();
+
+  return (
+    <div className="remix__page">
+      <main>
+        <h2>Welcome to Remix!</h2>
+        <p>We're stoked that you're here. 🥳</p>
+        <p>
+          Feel free to take a look around the code to see how Remix does things,
+          it might be a bit different than what you’re used to. When you're
+          ready to dive deeper, we've got plenty of resources to get you
+          up-and-running quickly.
+        </p>
+        <p>
+          Check out all the demos in this starter, and then just delete the{" "}
+          <code>app/routes/demos</code> and <code>app/styles/demos</code>{" "}
+          folders when you're ready to turn this into your next project.
+        </p>
+      </main>
+      <aside>
+        <h2>Demos In This App</h2>
+        <ul>
+          {data.demos.map(demo => (
+            <li key={demo.to} className="remix__page__resource">
+              <Link to={demo.to} prefetch="intent">
+                {demo.name}
+              </Link>
+            </li>
+          ))}
+        </ul>
+        <h2>Resources</h2>
+        <ul>
+          {data.resources.map(resource => (
+            <li key={resource.url} className="remix__page__resource">
+              <a href={resource.url}>{resource.name}</a>
+            </li>
+          ))}
+        </ul>
+      </aside>
+    </div>
+  );
+}

examples/remix/app/styles/dark.css

@@ -0,0 +1,7 @@
+:root {
+  --color-foreground: hsl(0, 0%, 100%);
+  --color-background: hsl(0, 0%, 7%);
+  --color-links: hsl(213, 100%, 73%);
+  --color-links-hover: hsl(213, 100%, 80%);
+  --color-border: hsl(0, 0%, 25%);
+}

examples/remix/app/styles/demos/about.css

@@ -0,0 +1,26 @@
+/*
+ * Whoa whoa whoa, wait a sec...why are we overriding global CSS selectors?
+ * Isn't that kind of scary? How do we know this won't have side effects?
+ *
+ * In Remix, CSS that is included in a route file will *only* show up on that
+ * route (and for nested routes, its children). When the user navigates away
+ * from that route the CSS files linked from those routes will be automatically
+ * unloaded, making your styles much easier to predict and control.
+ *
+ * Read more about styling routes in the docs:
+ * https://remix.run/guides/styling
+ */
+
+:root {
+  --color-foreground: hsl(0, 0%, 7%);
+  --color-background: hsl(56, 100%, 50%);
+  --color-links: hsl(345, 56%, 39%);
+  --color-links-hover: hsl(345, 51%, 49%);
+  --color-border: rgb(184, 173, 20);
+  --font-body: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
+    Liberation Mono, Courier New, monospace;
+}
+
+.about__intro {
+  max-width: 500px;
+}

examples/remix/app/styles/global.css

@@ -0,0 +1,216 @@
+/*
+ * You can just delete everything here or keep whatever you like, it's just a
+ * quick baseline!
+ */
+:root {
+  --color-foreground: hsl(0, 0%, 7%);
+  --color-background: hsl(0, 0%, 100%);
+  --color-links: hsl(213, 100%, 52%);
+  --color-links-hover: hsl(213, 100%, 43%);
+  --color-border: hsl(0, 0%, 82%);
+  --font-body: -apple-system, "Segoe UI", Helvetica Neue, Helvetica, Roboto,
+    Arial, sans-serif, system-ui, "Apple Color Emoji", "Segoe UI Emoji";
+}
+
+html {
+  box-sizing: border-box;
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: inherit;
+}
+
+:-moz-focusring {
+  outline: auto;
+}
+
+:focus {
+  outline: var(--color-links) solid 2px;
+  outline-offset: 2px;
+}
+
+html,
+body {
+  padding: 0;
+  margin: 0;
+  background-color: var(--color-background);
+  color: var(--color-foreground);
+}
+
+body {
+  font-family: var(--font-body);
+  line-height: 1.5;
+}
+
+a {
+  color: var(--color-links);
+  text-decoration: none;
+}
+
+a:hover {
+  color: var(--color-links-hover);
+  text-decoration: underline;
+}
+
+hr {
+  display: block;
+  height: 1px;
+  border: 0;
+  background-color: var(--color-border);
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+}
+
+input:where([type="text"]),
+input:where([type="search"]) {
+  display: block;
+  border: 1px solid var(--color-border);
+  width: 100%;
+  font: inherit;
+  line-height: 1;
+  height: calc(1ch + 1.5em);
+  padding-right: 0.5em;
+  padding-left: 0.5em;
+  background-color: hsl(0 0% 100% / 20%);
+  color: var(--color-foreground);
+}
+
+.sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  white-space: nowrap;
+  border-width: 0;
+}
+
+.container {
+  --gutter: 16px;
+  width: 1024px;
+  max-width: calc(100% - var(--gutter) * 2);
+  margin-right: auto;
+  margin-left: auto;
+}
+
+.remix-app {
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+  min-height: calc(100vh - env(safe-area-inset-bottom));
+}
+
+.remix-app > * {
+  width: 100%;
+}
+
+.remix-app__header {
+  padding-top: 1rem;
+  padding-bottom: 1rem;
+  border-bottom: 1px solid var(--color-border);
+}
+
+.remix-app__header-content {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.remix-app__header-home-link {
+  width: 106px;
+  height: 30px;
+  color: var(--color-foreground);
+}
+
+.remix-app__header-nav ul {
+  list-style: none;
+  margin: 0;
+  display: flex;
+  align-items: center;
+  gap: 1.5em;
+}
+
+.remix-app__header-nav li {
+  font-weight: bold;
+}
+
+.remix-app__main {
+  flex: 1 1 100%;
+}
+
+.remix-app__footer {
+  padding-top: 1rem;
+  padding-bottom: 1rem;
+  border-top: 1px solid var(--color-border);
+}
+
+.remix-app__footer-content {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.remix__page {
+  --gap: 1rem;
+  --space: 2rem;
+  display: grid;
+  grid-auto-rows: min-content;
+  gap: var(--gap);
+  padding-top: var(--space);
+  padding-bottom: var(--space);
+}
+
+@media print, screen and (min-width: 640px) {
+  .remix__page {
+    --gap: 2rem;
+    grid-auto-rows: unset;
+    grid-template-columns: repeat(2, 1fr);
+  }
+}
+
+@media screen and (min-width: 1024px) {
+  .remix__page {
+    --gap: 4rem;
+  }
+}
+
+.remix__page > main > :first-child {
+  margin-top: 0;
+}
+
+.remix__page > main > :last-child {
+  margin-bottom: 0;
+}
+
+.remix__page > aside {
+  margin: 0;
+  padding: 1.5ch 2ch;
+  border: solid 1px var(--color-border);
+  border-radius: 0.5rem;
+}
+
+.remix__page > aside > :first-child {
+  margin-top: 0;
+}
+
+.remix__page > aside > :last-child {
+  margin-bottom: 0;
+}
+
+.remix__form {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+  padding: 1rem;
+  border: 1px solid var(--color-border);
+  border-radius: 0.5rem;
+}
+
+.remix__form > * {
+  margin-top: 0;
+  margin-bottom: 0;
+}

examples/remix/package.json

@@ -0,0 +1,29 @@
+{
+  "private": true,
+  "name": "remix-app-template",
+  "description": "",
+  "license": "",
+  "scripts": {
+    "build": "remix build",
+    "dev": "remix dev",
+    "postinstall": "remix setup node"
+  },
+  "dependencies": {
+    "@remix-run/react": "^1.0.6",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "remix": "^1.0.6",
+    "@remix-run/serve": "^1.0.6",
+    "@remix-run/vercel": "^1.0.6"
+  },
+  "devDependencies": {
+    "@remix-run/dev": "^1.0.6",
+    "@types/react": "^17.0.24",
+    "@types/react-dom": "^17.0.9",
+    "typescript": "^4.1.2"
+  },
+  "engines": {
+    "node": ">=14"
+  },
+  "sideEffects": false
+}

examples/remix/remix.config.js

@@ -0,0 +1,9 @@
+/**
+ * @type {import('@remix-run/dev/config').AppConfig}
+ */
+module.exports = {
+  appDirectory: "app",
+  browserBuildDirectory: "public/build",
+  publicPath: "/build/",
+  serverBuildDirectory: "api/_build"
+};

examples/remix/remix.env.d.ts

@@ -0,0 +1,2 @@
+/// <reference types="@remix-run/dev" />
+/// <reference types="@remix-run/node/globals" />

examples/remix/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "include": ["remix.env.d.ts", "**/*.ts", "**/*.tsx"],
+  "compilerOptions": {
+    "lib": ["DOM", "DOM.Iterable", "ES2019"],
+    "esModuleInterop": true,
+    "jsx": "react-jsx",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "target": "ES2019",
+    "strict": true,
+    "paths": {
+      "~/*": ["./app/*"]
+    },
+
+    // Remix takes care of building everything in `remix build`.
+    "noEmit": true
+  }
+}

examples/remix/vercel.json

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

package.json

@@ -17,7 +17,6 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "4.28.0",
     "@typescript-eslint/parser": "4.28.0",
-    "@vercel/ncc": "0.24.0",
     "async-retry": "1.2.3",
     "buffer-replace": "1.0.0",
     "cheerio": "1.0.0-rc.3",
@@ -25,7 +24,7 @@
     "eslint-config-prettier": "8.3.0",
     "eslint-plugin-jest": "24.3.6",
     "husky": "6.0.0",
-    "jest": "27.0.6",
+    "jest": "27.3.1",
     "json5": "2.1.1",
     "lint-staged": "9.2.5",
     "node-fetch": "2.6.1",

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "2.12.3-canary.0",
+  "version": "2.12.3-canary.32",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",
@@ -21,16 +21,16 @@
     "@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/fs-extra": "9.0.13",
     "@types/glob": "^7.1.1",
-    "@types/jest": "26.0.24",
+    "@types/jest": "27.0.1",
     "@types/js-yaml": "3.12.1",
     "@types/ms": "0.7.31",
     "@types/multistream": "2.1.1",
     "@types/node-fetch": "^2.1.6",
     "@types/semver": "6.0.0",
     "@types/yazl": "^2.4.1",
-    "@vercel/frameworks": "0.5.1-canary.1",
+    "@vercel/frameworks": "0.5.1-canary.16",
     "@vercel/ncc": "0.24.0",
     "aggregate-error": "3.0.1",
     "async-retry": "1.2.3",
@@ -38,7 +38,7 @@
     "boxen": "4.2.0",
     "cross-spawn": "6.0.5",
     "end-of-stream": "1.4.1",
-    "fs-extra": "7.0.0",
+    "fs-extra": "10.0.0",
     "glob": "7.1.3",
     "into-stream": "5.0.0",
     "js-yaml": "3.13.1",

packages/build-utils/src/convert-runtime-to-plugin.ts

@@ -0,0 +1,366 @@
+import fs from 'fs-extra';
+import { join, dirname, parse, relative } from 'path';
+import glob from './fs/glob';
+import { normalizePath } from './fs/normalize-path';
+import { FILES_SYMBOL, Lambda } from './lambda';
+import type FileBlob from './file-blob';
+import type { BuildOptions, Files } from './types';
+import { getIgnoreFilter } from '.';
+
+// `.output` was already created by the Build Command, so we have
+// to ensure its contents don't get bundled into the Lambda. Similarily,
+// we don't want to bundle anything from `.vercel` either. Lastly,
+// Builders/Runtimes didn't have `vercel.json` or `now.json`.
+const ignoredPaths = ['.output', '.vercel', 'vercel.json', 'now.json'];
+
+const shouldIgnorePath = (
+  file: string,
+  ignoreFilter: any,
+  ignoreFile: boolean
+) => {
+  const isNative = ignoredPaths.some(item => {
+    return file.startsWith(item);
+  });
+
+  if (!ignoreFile) {
+    return isNative;
+  }
+
+  return isNative || ignoreFilter(file);
+};
+
+const getSourceFiles = async (workPath: string, ignoreFilter: any) => {
+  const list = await glob('**', {
+    cwd: workPath,
+  });
+
+  // We're not passing this as an `ignore` filter to the `glob` function above,
+  // so that we can re-use exactly the same `getIgnoreFilter` method that the
+  // Build Step uses (literally the same code). Note that this exclusion only applies
+  // when deploying. Locally, another exclusion is needed, which is handled
+  // further below in the `convertRuntimeToPlugin` function.
+  for (const file in list) {
+    if (shouldIgnorePath(file, ignoreFilter, true)) {
+      delete list[file];
+    }
+  }
+
+  return list;
+};
+
+/**
+ * Convert legacy Runtime to a Plugin.
+ * @param buildRuntime - a legacy build() function from a Runtime
+ * @param packageName - the name of the package, for example `vercel-plugin-python`
+ * @param ext - the file extension, for example `.py`
+ */
+export function convertRuntimeToPlugin(
+  buildRuntime: (options: BuildOptions) => Promise<{ output: Lambda }>,
+  packageName: string,
+  ext: string
+) {
+  // This `build()` signature should match `plugin.build()` signature in `vercel build`.
+  return async function build({ workPath }: { workPath: string }) {
+    // We also don't want to provide any files to Runtimes that were ignored
+    // through `.vercelignore` or `.nowignore`, because the Build Step does the same.
+    const ignoreFilter = await getIgnoreFilter(workPath);
+
+    // Retrieve the files that are currently available on the File System,
+    // before the Legacy Runtime has even started to build.
+    const sourceFilesPreBuild = await getSourceFiles(workPath, ignoreFilter);
+
+    // Instead of doing another `glob` to get all the matching source files,
+    // we'll filter the list of existing files down to only the ones
+    // that are matching the entrypoint pattern, so we're first creating
+    // a clean new list to begin.
+    const entrypoints = Object.assign({}, sourceFilesPreBuild);
+
+    const entrypointMatch = new RegExp(`^api/.*${ext}$`);
+
+    // Up next, we'll strip out the files from the list of entrypoints
+    // that aren't actually considered entrypoints.
+    for (const file in entrypoints) {
+      if (!entrypointMatch.test(file)) {
+        delete entrypoints[file];
+      }
+    }
+
+    const pages: { [key: string]: any } = {};
+    const pluginName = packageName.replace('vercel-plugin-', '');
+
+    const traceDir = join(
+      workPath,
+      `.output`,
+      `inputs`,
+      // Legacy Runtimes can only provide API Routes, so that's
+      // why we can use this prefix for all of them. Here, we have to
+      // make sure to not use a cryptic hash name, because people
+      // need to be able to easily inspect the output.
+      `api-routes-${pluginName}`
+    );
+
+    await fs.ensureDir(traceDir);
+
+    for (const entrypoint of Object.keys(entrypoints)) {
+      const { output } = await buildRuntime({
+        files: sourceFilesPreBuild,
+        entrypoint,
+        workPath,
+        config: {
+          zeroConfig: true,
+        },
+        meta: {
+          avoidTopLevelInstall: true,
+        },
+      });
+
+      // Legacy Runtimes tend to pollute the `workPath` with compiled results,
+      // because the `workPath` used to be a place that was a place where they could
+      // just put anything, but nowadays it's the working directory of the `vercel build`
+      // command, which is the place where the developer keeps their source files,
+      // so we don't want to pollute this space unnecessarily. That means we have to clean
+      // up files that were created by the build, which is done further below.
+      const sourceFilesAfterBuild = await getSourceFiles(
+        workPath,
+        ignoreFilter
+      );
+
+      // Further down, we will need the filename of the Lambda handler
+      // for placing it inside `server/pages/api`, but because Legacy Runtimes
+      // don't expose the filename directly, we have to construct it
+      // from the handler name, and then find the matching file further below,
+      // because we don't yet know its extension here.
+      const handler = output.handler;
+      const handlerMethod = handler.split('.').reverse()[0];
+      const handlerFileName = handler.replace(`.${handlerMethod}`, '');
+
+      pages[entrypoint] = {
+        handler: handler,
+        runtime: output.runtime,
+        memory: output.memory,
+        maxDuration: output.maxDuration,
+        environment: output.environment,
+        allowQuery: output.allowQuery,
+      };
+
+      // @ts-ignore This symbol is a private API
+      const lambdaFiles: Files = output[FILES_SYMBOL];
+
+      // When deploying, the `files` that are passed to the Legacy Runtimes already
+      // have certain files that are ignored stripped, but locally, that list of
+      // files isn't used by the Legacy Runtimes, so we need to apply the filters
+      // to the outputs that they are returning instead.
+      for (const file in lambdaFiles) {
+        if (shouldIgnorePath(file, ignoreFilter, false)) {
+          delete lambdaFiles[file];
+        }
+      }
+
+      const handlerFilePath = Object.keys(lambdaFiles).find(item => {
+        return parse(item).name === handlerFileName;
+      });
+
+      const handlerFileOrigin = lambdaFiles[handlerFilePath || ''].fsPath;
+
+      if (!handlerFileOrigin) {
+        throw new Error(
+          `Could not find a handler file. Please ensure that the list of \`files\` defined for the returned \`Lambda\` contains a file with the name ${handlerFileName} (+ any extension).`
+        );
+      }
+
+      const entry = join(workPath, '.output', 'server', 'pages', entrypoint);
+
+      await fs.ensureDir(dirname(entry));
+      await linkOrCopy(handlerFileOrigin, entry);
+
+      const toRemove = [];
+
+      // You can find more details about this at the point where the
+      // `sourceFilesAfterBuild` is created originally.
+      for (const file in sourceFilesAfterBuild) {
+        if (!sourceFilesPreBuild[file]) {
+          const path = sourceFilesAfterBuild[file].fsPath;
+          toRemove.push(fs.remove(path));
+        }
+      }
+
+      await Promise.all(toRemove);
+
+      const tracedFiles: {
+        absolutePath: string;
+        relativePath: string;
+      }[] = [];
+
+      Object.entries(lambdaFiles).forEach(async ([relPath, file]) => {
+        const newPath = join(traceDir, relPath);
+
+        // The handler was already moved into position above.
+        if (relPath === handlerFilePath) {
+          return;
+        }
+
+        tracedFiles.push({ absolutePath: newPath, relativePath: relPath });
+
+        if (file.fsPath) {
+          await linkOrCopy(file.fsPath, newPath);
+        } else if (file.type === 'FileBlob') {
+          const { data, mode } = file as FileBlob;
+          await fs.writeFile(newPath, data, { mode });
+        } else {
+          throw new Error(`Unknown file type: ${file.type}`);
+        }
+      });
+
+      const nft = join(
+        workPath,
+        '.output',
+        'server',
+        'pages',
+        `${entrypoint}.nft.json`
+      );
+
+      const json = JSON.stringify({
+        version: 1,
+        files: tracedFiles.map(file => ({
+          input: normalizePath(relative(dirname(nft), file.absolutePath)),
+          output: normalizePath(file.relativePath),
+        })),
+      });
+
+      await fs.ensureDir(dirname(nft));
+      await fs.writeFile(nft, json);
+    }
+
+    await updateFunctionsManifest({ workPath, pages });
+  };
+}
+
+async function linkOrCopy(existingPath: string, newPath: string) {
+  try {
+    await fs.createLink(existingPath, newPath);
+  } catch (err: any) {
+    if (err.code !== 'EEXIST') {
+      await fs.copyFile(existingPath, newPath);
+    }
+  }
+}
+
+async function readJson(filePath: string): Promise<{ [key: string]: any }> {
+  try {
+    const str = await fs.readFile(filePath, 'utf8');
+    return JSON.parse(str);
+  } catch (err) {
+    if (err.code === 'ENOENT') {
+      return {};
+    }
+    throw err;
+  }
+}
+
+/**
+ * If `.output/functions-manifest.json` exists, append to the pages
+ * property. Otherwise write a new file.
+ */
+export async function updateFunctionsManifest({
+  workPath,
+  pages,
+}: {
+  workPath: string;
+  pages: { [key: string]: any };
+}) {
+  const functionsManifestPath = join(
+    workPath,
+    '.output',
+    'functions-manifest.json'
+  );
+  const functionsManifest = await readJson(functionsManifestPath);
+
+  if (!functionsManifest.version) functionsManifest.version = 1;
+  if (!functionsManifest.pages) functionsManifest.pages = {};
+
+  for (const [pageKey, pageConfig] of Object.entries(pages)) {
+    functionsManifest.pages[pageKey] = { ...pageConfig };
+  }
+
+  await fs.writeFile(functionsManifestPath, JSON.stringify(functionsManifest));
+}
+
+/**
+ * Append routes to the `routes-manifest.json` file.
+ * If the file does not exist, it will be created.
+ */
+export async function updateRoutesManifest({
+  workPath,
+  redirects,
+  rewrites,
+  headers,
+  dynamicRoutes,
+  staticRoutes,
+}: {
+  workPath: string;
+  redirects?: {
+    source: string;
+    destination: string;
+    statusCode: number;
+    regex: string;
+  }[];
+  rewrites?: {
+    source: string;
+    destination: string;
+    regex: string;
+  }[];
+  headers?: {
+    source: string;
+    headers: {
+      key: string;
+      value: string;
+    }[];
+    regex: string;
+  }[];
+  dynamicRoutes?: {
+    page: string;
+    regex: string;
+    namedRegex?: string;
+    routeKeys?: { [named: string]: string };
+  }[];
+  staticRoutes?: {
+    page: string;
+    regex: string;
+    namedRegex?: string;
+    routeKeys?: { [named: string]: string };
+  }[];
+}) {
+  const routesManifestPath = join(workPath, '.output', 'routes-manifest.json');
+
+  const routesManifest = await readJson(routesManifestPath);
+
+  if (!routesManifest.version) routesManifest.version = 3;
+  if (routesManifest.pages404 === undefined) routesManifest.pages404 = true;
+
+  if (redirects) {
+    if (!routesManifest.redirects) routesManifest.redirects = [];
+    routesManifest.redirects.push(...redirects);
+  }
+
+  if (rewrites) {
+    if (!routesManifest.rewrites) routesManifest.rewrites = [];
+    routesManifest.rewrites.push(...rewrites);
+  }
+
+  if (headers) {
+    if (!routesManifest.headers) routesManifest.headers = [];
+    routesManifest.headers.push(...headers);
+  }
+
+  if (dynamicRoutes) {
+    if (!routesManifest.dynamicRoutes) routesManifest.dynamicRoutes = [];
+    routesManifest.dynamicRoutes.push(...dynamicRoutes);
+  }
+
+  if (staticRoutes) {
+    if (!routesManifest.staticRoutes) routesManifest.staticRoutes = [];
+    routesManifest.staticRoutes.push(...staticRoutes);
+  }
+
+  await fs.writeFile(routesManifestPath, JSON.stringify(routesManifest));
+}

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

@@ -96,6 +96,7 @@ export async function detectBuilders(
   redirectRoutes: Route[] | null;
   rewriteRoutes: Route[] | null;
   errorRoutes: Route[] | null;
+  limitedRoutes: LimitedRoutes | null;
 }> {
   const errors: ErrorResponse[] = [];
   const warnings: ErrorResponse[] = [];
@@ -114,6 +115,7 @@ export async function detectBuilders(
       redirectRoutes: null,
       rewriteRoutes: null,
       errorRoutes: null,
+      limitedRoutes: null,
     };
   }
 
@@ -179,6 +181,7 @@ export async function detectBuilders(
           redirectRoutes: null,
           rewriteRoutes: null,
           errorRoutes: null,
+          limitedRoutes: null,
         };
       }
 
@@ -257,6 +260,7 @@ export async function detectBuilders(
         defaultRoutes: null,
         rewriteRoutes: null,
         errorRoutes: null,
+        limitedRoutes: null,
       };
     }
 
@@ -299,6 +303,7 @@ export async function detectBuilders(
       defaultRoutes: null,
       rewriteRoutes: null,
       errorRoutes: null,
+      limitedRoutes: null,
     };
   }
 
@@ -326,6 +331,7 @@ export async function detectBuilders(
   }
 
   const routesResult = getRouteResult(
+    pkg,
     apiRoutes,
     dynamicRoutes,
     usedOutputDirectory,
@@ -342,6 +348,7 @@ export async function detectBuilders(
     defaultRoutes: routesResult.defaultRoutes,
     rewriteRoutes: routesResult.rewriteRoutes,
     errorRoutes: routesResult.errorRoutes,
+    limitedRoutes: routesResult.limitedRoutes,
   };
 }
 
@@ -932,7 +939,14 @@ function createRouteFromPath(
   return { route, isDynamic };
 }
 
+interface LimitedRoutes {
+  defaultRoutes: Route[];
+  redirectRoutes: Route[];
+  rewriteRoutes: Route[];
+}
+
 function getRouteResult(
+  pkg: PackageJson | undefined | null,
   apiRoutes: Source[],
   dynamicRoutes: Source[],
   outputDirectory: string,
@@ -944,11 +958,18 @@ function getRouteResult(
   redirectRoutes: Route[];
   rewriteRoutes: Route[];
   errorRoutes: Route[];
+  limitedRoutes: LimitedRoutes;
 } {
+  const deps = Object.assign({}, pkg?.dependencies, pkg?.devDependencies);
   const defaultRoutes: Route[] = [];
   const redirectRoutes: Route[] = [];
   const rewriteRoutes: Route[] = [];
   const errorRoutes: Route[] = [];
+  const limitedRoutes: LimitedRoutes = {
+    defaultRoutes: [],
+    redirectRoutes: [],
+    rewriteRoutes: [],
+  };
   const framework = frontendBuilder?.config?.framework || '';
   const isNextjs =
     framework === 'nextjs' || isOfficialRuntime('next', frontendBuilder?.use);
@@ -956,14 +977,43 @@ function getRouteResult(
 
   if (apiRoutes && apiRoutes.length > 0) {
     if (options.featHandleMiss) {
+      // Exclude extension names if the corresponding plugin is not found in package.json
+      // detectBuilders({ignoreRoutesForBuilders: ['@vercel/python']})
+      // return a copy of routes.
+      // We should exclud errorRoutes and
       const extSet = detectApiExtensions(apiBuilders);
+      const withTag = options.tag ? `@${options.tag}` : '';
+      const extSetLimited = detectApiExtensions(
+        apiBuilders.filter(b => {
+          if (
+            b.use === `@vercel/python${withTag}` &&
+            !('vercel-plugin-python' in deps)
+          ) {
+            return false;
+          }
+          if (
+            b.use === `@vercel/go${withTag}` &&
+            !('vercel-plugin-go' in deps)
+          ) {
+            return false;
+          }
+          if (
+            b.use === `@vercel/ruby${withTag}` &&
+            !('vercel-plugin-ruby' in deps)
+          ) {
+            return false;
+          }
+          return true;
+        })
+      );
 
       if (extSet.size > 0) {
-        const exts = Array.from(extSet)
+        const extGroup = `(?:\\.(?:${Array.from(extSet)
           .map(ext => ext.slice(1))
-          .join('|');
-
-        const extGroup = `(?:\\.(?:${exts}))`;
+          .join('|')}))`;
+        const extGroupLimited = `(?:\\.(?:${Array.from(extSetLimited)
+          .map(ext => ext.slice(1))
+          .join('|')}))`;
 
         if (options.cleanUrls) {
           redirectRoutes.push({
@@ -979,6 +1029,20 @@ function getRouteResult(
             },
             status: 308,
           });
+
+          limitedRoutes.redirectRoutes.push({
+            src: `^/(api(?:.+)?)/index${extGroupLimited}?/?$`,
+            headers: { Location: options.trailingSlash ? '/$1/' : '/$1' },
+            status: 308,
+          });
+
+          limitedRoutes.redirectRoutes.push({
+            src: `^/api/(.+)${extGroupLimited}/?$`,
+            headers: {
+              Location: options.trailingSlash ? '/api/$1/' : '/api/$1',
+            },
+            status: 308,
+          });
         } else {
           defaultRoutes.push({ handle: 'miss' });
           defaultRoutes.push({
@@ -986,10 +1050,18 @@ function getRouteResult(
             dest: '/api/$1',
             check: true,
           });
+
+          limitedRoutes.defaultRoutes.push({ handle: 'miss' });
+          limitedRoutes.defaultRoutes.push({
+            src: `^/api/(.+)${extGroupLimited}$`,
+            dest: '/api/$1',
+            check: true,
+          });
         }
       }
 
       rewriteRoutes.push(...dynamicRoutes);
+      limitedRoutes.rewriteRoutes.push(...dynamicRoutes);
 
       if (typeof ignoreRuntimes === 'undefined') {
         // This route is only necessary to hide the directory listing
@@ -1030,7 +1102,7 @@ function getRouteResult(
     // https://nextjs.org/docs/advanced-features/custom-error-page
     errorRoutes.push({
       status: 404,
-      src: '^/(?!.*api).*$',
+      src: '^(?!/api).*$',
       dest: options.cleanUrls ? '/404' : '/404.html',
     });
   }
@@ -1040,6 +1112,7 @@ function getRouteResult(
     redirectRoutes,
     rewriteRoutes,
     errorRoutes,
+    limitedRoutes,
   };
 }
 

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

@@ -100,4 +100,4 @@ class FileFsRef implements File {
   }
 }
 
-export = FileFsRef;
+export default FileFsRef;

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

@@ -3,6 +3,7 @@ import assert from 'assert';
 import vanillaGlob_ from 'glob';
 import { promisify } from 'util';
 import { lstat, Stats } from 'fs-extra';
+import { normalizePath } from './normalize-path';
 import FileFsRef from '../file-fs-ref';
 
 export type GlobOptions = vanillaGlob_.IOptions;
@@ -45,7 +46,7 @@ export default async function glob(
   const files = await vanillaGlob(pattern, options);
 
   for (const relativePath of files) {
-    const fsPath = path.join(options.cwd!, relativePath).replace(/\\/g, '/');
+    const fsPath = normalizePath(path.join(options.cwd!, relativePath));
     let stat: Stats = options.statCache![fsPath] as Stats;
     assert(
       stat,

packages/build-utils/src/fs/normalize-path.ts

@@ -0,0 +1,8 @@
+const isWin = process.platform === 'win32';
+
+/**
+ * Convert Windows separators to Unix separators.
+ */
+export function normalizePath(p: string): string {
+  return isWin ? p.replace(/\\/g, '/') : p;
+}

packages/build-utils/src/get-ignore-filter.ts

@@ -0,0 +1,84 @@
+import path from 'path';
+import fs from 'fs-extra';
+import ignore from 'ignore';
+
+interface CodedError extends Error {
+  code: string;
+}
+
+function isCodedError(error: unknown): error is CodedError {
+  return (
+    error !== null &&
+    error !== undefined &&
+    (error as CodedError).code !== undefined
+  );
+}
+
+function clearRelative(s: string) {
+  return s.replace(/(\n|^)\.\//g, '$1');
+}
+
+export default async function (
+  downloadPath: string,
+  rootDirectory?: string | undefined
+) {
+  const readFile = async (p: string) => {
+    try {
+      return await fs.readFile(p, 'utf8');
+    } catch (error: any) {
+      if (
+        error.code === 'ENOENT' ||
+        (error instanceof Error && error.message.includes('ENOENT'))
+      ) {
+        return undefined;
+      }
+
+      throw error;
+    }
+  };
+
+  const vercelIgnorePath = path.join(
+    downloadPath,
+    rootDirectory || '',
+    '.vercelignore'
+  );
+  const nowIgnorePath = path.join(
+    downloadPath,
+    rootDirectory || '',
+    '.nowignore'
+  );
+  const ignoreContents = [];
+
+  try {
+    ignoreContents.push(
+      ...(
+        await Promise.all([readFile(vercelIgnorePath), readFile(nowIgnorePath)])
+      ).filter(Boolean)
+    );
+  } catch (error) {
+    if (isCodedError(error) && error.code === 'ENOTDIR') {
+      console.log(`Warning: Cannot read ignore file from ${vercelIgnorePath}`);
+    } else {
+      throw error;
+    }
+  }
+
+  if (ignoreContents.length === 2) {
+    throw new Error(
+      'Cannot use both a `.vercelignore` and `.nowignore` file. Please delete the `.nowignore` file.'
+    );
+  }
+
+  if (ignoreContents.length === 0) {
+    return () => false;
+  }
+
+  const ignoreFilter: any = ignore().add(clearRelative(ignoreContents[0]!));
+
+  return function (p: string) {
+    // we should not ignore now.json and vercel.json if it asked to.
+    // we depend on these files for building the app with sourceless
+    if (p === 'now.json' || p === 'vercel.json') return false;
+    return ignoreFilter.test(p).ignored;
+  };
+}

packages/build-utils/src/index.ts

@@ -1,3 +1,4 @@
+import { createHash } from 'crypto';
 import FileBlob from './file-blob';
 import FileFsRef from './file-fs-ref';
 import FileRef from './file-ref';
@@ -33,6 +34,7 @@ import { NowBuildError } from './errors';
 import streamToBuffer from './fs/stream-to-buffer';
 import shouldServe from './should-serve';
 import debug from './debug';
+import getIgnoreFilter from './get-ignore-filter';
 
 export {
   FileBlob,
@@ -70,6 +72,7 @@ export {
   isSymbolicLink,
   getLambdaOptionsFromFunction,
   scanParentDirs,
+  getIgnoreFilter,
 };
 
 export {
@@ -81,6 +84,12 @@ export {
 export { detectFramework } from './detect-framework';
 export { DetectorFilesystem } from './detectors/filesystem';
 export { readConfigFile } from './fs/read-config-file';
+export { normalizePath } from './fs/normalize-path';
+export {
+  convertRuntimeToPlugin,
+  updateFunctionsManifest,
+  updateRoutesManifest,
+} from './convert-runtime-to-plugin';
 
 export * from './schemas';
 export * from './types';
@@ -126,3 +135,11 @@ export const getPlatformEnv = (name: string): string | undefined => {
   }
   return n;
 };
+
+/**
+ * Helper function for generating file or directories names in `.output/inputs`
+ * for dependencies of files provided to the File System API.
+ */
+export const getInputHash = (source: Buffer | string): string => {
+  return createHash('sha1').update(source).digest('hex');
+};

packages/build-utils/src/lambda.ts

@@ -19,6 +19,8 @@ interface LambdaOptions {
   memory?: number;
   maxDuration?: number;
   environment: Environment;
+  allowQuery?: string[];
+  regions?: string[];
 }
 
 interface CreateLambdaOptions {
@@ -28,13 +30,17 @@ interface CreateLambdaOptions {
   memory?: number;
   maxDuration?: number;
   environment?: Environment;
+  allowQuery?: string[];
+  regions?: string[];
 }
 
 interface GetLambdaOptionsFromFunctionOptions {
   sourceFile: string;
-  config?: Config;
+  config?: Pick<Config, 'functions'>;
 }
 
+export const FILES_SYMBOL = Symbol('files');
+
 export class Lambda {
   public type: 'Lambda';
   public zipBuffer: Buffer;
@@ -43,6 +49,8 @@ export class Lambda {
   public memory?: number;
   public maxDuration?: number;
   public environment: Environment;
+  public allowQuery?: string[];
+  public regions?: string[];
 
   constructor({
     zipBuffer,
@@ -51,6 +59,8 @@ export class Lambda {
     maxDuration,
     memory,
     environment,
+    allowQuery,
+    regions,
   }: LambdaOptions) {
     this.type = 'Lambda';
     this.zipBuffer = zipBuffer;
@@ -59,6 +69,8 @@ export class Lambda {
     this.memory = memory;
     this.maxDuration = maxDuration;
     this.environment = environment;
+    this.allowQuery = allowQuery;
+    this.regions = regions;
   }
 }
 
@@ -72,6 +84,8 @@ export async function createLambda({
   memory,
   maxDuration,
   environment = {},
+  allowQuery,
+  regions,
 }: CreateLambdaOptions): Promise<Lambda> {
   assert(typeof files === 'object', '"files" must be an object');
   assert(typeof handler === 'string', '"handler" is not a string');
@@ -86,18 +100,38 @@ export async function createLambda({
     assert(typeof maxDuration === 'number', '"maxDuration" is not a number');
   }
 
+  if (allowQuery !== undefined) {
+    assert(Array.isArray(allowQuery), '"allowQuery" is not an Array');
+    assert(
+      allowQuery.every(q => typeof q === 'string'),
+      '"allowQuery" is not a string Array'
+    );
+  }
+
+  if (regions !== undefined) {
+    assert(Array.isArray(regions), '"regions" is not an Array');
+    assert(
+      regions.every(r => typeof r === 'string'),
+      '"regions" is not a string Array'
+    );
+  }
+
   await sema.acquire();
 
   try {
     const zipBuffer = await createZip(files);
-    return new Lambda({
+    const lambda = new Lambda({
       zipBuffer,
       handler,
       runtime,
       memory,
       maxDuration,
       environment,
+      regions,
     });
+    // @ts-ignore This symbol is a private API
+    lambda[FILES_SYMBOL] = files;
+    return lambda;
   } finally {
     sema.release();
   }
@@ -131,9 +165,7 @@ export async function createZip(files: Files): Promise<Buffer> {
     }
 
     zipFile.end();
-    streamToBuffer(zipFile.outputStream)
-      .then(resolve)
-      .catch(reject);
+    streamToBuffer(zipFile.outputStream).then(resolve).catch(reject);
   });
 
   return zipBuffer;

packages/build-utils/src/prerender.ts

@@ -9,6 +9,7 @@ interface PrerenderOptions {
   fallback: FileBlob | FileFsRef | FileRef | null;
   group?: number;
   bypassToken?: string | null /* optional to be non-breaking change */;
+  allowQuery?: string[];
 }
 
 export class Prerender {
@@ -18,6 +19,7 @@ export class Prerender {
   public fallback: FileBlob | FileFsRef | FileRef | null;
   public group?: number;
   public bypassToken: string | null;
+  public allowQuery?: string[];
 
   constructor({
     expiration,
@@ -25,6 +27,7 @@ export class Prerender {
     fallback,
     group,
     bypassToken,
+    allowQuery,
   }: PrerenderOptions) {
     this.type = 'Prerender';
     this.expiration = expiration;
@@ -62,5 +65,19 @@ export class Prerender {
       );
     }
     this.fallback = fallback;
+
+    if (allowQuery !== undefined) {
+      if (!Array.isArray(allowQuery)) {
+        throw new Error(
+          'The `allowQuery` argument for `Prerender` must be Array.'
+        );
+      }
+      if (!allowQuery.every(q => typeof q === 'string')) {
+        throw new Error(
+          'The `allowQuery` argument for `Prerender` must be Array of strings.'
+        );
+      }
+      this.allowQuery = allowQuery;
+    }
   }
 }

packages/build-utils/src/types.ts

@@ -10,6 +10,7 @@ export interface File {
   mode: number;
   contentType?: string;
   toStream: () => NodeJS.ReadableStream;
+  toStreamAsync?: () => Promise<NodeJS.ReadableStream>;
   /**
    * The absolute path to the file in the filesystem
    */
@@ -57,6 +58,7 @@ export interface Meta {
   filesRemoved?: string[];
   env?: Env;
   buildEnv?: Env;
+  avoidTopLevelInstall?: boolean;
 }
 
 export interface AnalyzeOptions {

packages/build-utils/test/convert-runtime/invalid-functions/api/users.rb

@@ -0,0 +1 @@
+# users.rb

packages/build-utils/test/convert-runtime/invalid-functions/vercel.json

@@ -0,0 +1,10 @@
+{
+  "functions": {
+    "api/users.rb": {
+      "memory": 3008
+    },
+    "api/doesnt-exist.rb": {
+      "memory": 768
+    }
+  }
+}

packages/build-utils/test/convert-runtime/python-api/api/db/[id].py

@@ -0,0 +1 @@
+# [id].py

packages/build-utils/test/convert-runtime/python-api/api/index.py

@@ -0,0 +1 @@
+# index

packages/build-utils/test/convert-runtime/python-api/api/project/[aid]/[bid]/index.py

@@ -0,0 +1 @@
+# project/[aid]/[bid]/index.py

packages/build-utils/test/convert-runtime/python-api/api/users/get.py

@@ -0,0 +1 @@
+# get

packages/build-utils/test/convert-runtime/python-api/api/users/post.py

@@ -0,0 +1 @@
+# post

packages/build-utils/test/convert-runtime/python-api/file.txt

@@ -0,0 +1 @@
+This file should also be included

packages/build-utils/test/convert-runtime/python-api/util/date.py

@@ -0,0 +1 @@
+# date

packages/build-utils/test/convert-runtime/python-api/util/math.py

@@ -0,0 +1 @@
+# math

packages/build-utils/test/convert-runtime/python-api/vercel.json

@@ -0,0 +1,7 @@
+{
+  "functions": {
+    "api/users/post.py": {
+      "memory": 3008
+    }
+  }
+}

packages/build-utils/test/fixtures/20-npm-7/vercel.json

@@ -1,5 +1,5 @@
 {
   "version": 2,
   "builds": [{ "src": "package.json", "use": "@vercel/static-build" }],
-  "probes": [{ "path": "/", "mustContain": "npm version: 7" }]
+  "probes": [{ "path": "/", "mustContain": "npm version: 8" }]
 }

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

@@ -2013,15 +2013,11 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
       framework: 'redwoodjs',
     };
 
-    const {
-      builders,
-      defaultRoutes,
-      rewriteRoutes,
-      errorRoutes,
-    } = await detectBuilders(files, null, {
-      projectSettings,
-      featHandleMiss,
-    });
+    const { builders, defaultRoutes, rewriteRoutes, errorRoutes } =
+      await detectBuilders(files, null, {
+        projectSettings,
+        featHandleMiss,
+      });
 
     expect(builders).toStrictEqual([
       {
@@ -2038,7 +2034,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(errorRoutes).toStrictEqual([
       {
         status: 404,
-        src: '^/(?!.*api).*$',
+        src: '^(?!/api).*$',
         dest: '/404.html',
       },
     ]);
@@ -2050,15 +2046,11 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
       framework: 'redwoodjs',
     };
 
-    const {
-      builders,
-      defaultRoutes,
-      rewriteRoutes,
-      errorRoutes,
-    } = await detectBuilders(files, null, {
-      projectSettings,
-      featHandleMiss,
-    });
+    const { builders, defaultRoutes, rewriteRoutes, errorRoutes } =
+      await detectBuilders(files, null, {
+        projectSettings,
+        featHandleMiss,
+      });
 
     expect(builders).toStrictEqual([
       {
@@ -2096,7 +2088,7 @@ describe('Test `detectBuilders` with `featHandleMiss=true`', () => {
     expect(errorRoutes).toStrictEqual([
       {
         status: 404,
-        src: '^/(?!.*api).*$',
+        src: '^(?!/api).*$',
         dest: '/404.html',
       },
     ]);
@@ -2393,13 +2385,10 @@ it('Test `detectRoutes` with `featHandleMiss=true`', async () => {
   {
     const files = ['api/user.go', 'api/team.js', 'api/package.json'];
 
-    const { defaultRoutes, rewriteRoutes, errorRoutes } = await detectBuilders(
-      files,
-      null,
-      {
+    const { defaultRoutes, rewriteRoutes, errorRoutes, limitedRoutes } =
+      await detectBuilders(files, null, {
         featHandleMiss,
-      }
-    );
+      });
     expect(defaultRoutes).toStrictEqual([
       { handle: 'miss' },
       {
@@ -2417,11 +2406,27 @@ it('Test `detectRoutes` with `featHandleMiss=true`', async () => {
     expect(errorRoutes).toStrictEqual([
       {
         status: 404,
-        src: '^/(?!.*api).*$',
+        src: '^(?!/api).*$',
         dest: '/404.html',
       },
     ]);
 
+    // Limited routes should have js but not go since the go plugin is not installed
+    expect(limitedRoutes).toStrictEqual({
+      redirectRoutes: [],
+      rewriteRoutes: [],
+      defaultRoutes: [
+        {
+          handle: 'miss',
+        },
+        {
+          src: '^/api/(.+)(?:\\.(?:js))$',
+          dest: '/api/$1',
+          check: true,
+        },
+      ],
+    });
+
     const pattern = new RegExp(errorRoutes![0].src!);
 
     [
@@ -2435,6 +2440,11 @@ it('Test `detectRoutes` with `featHandleMiss=true`', async () => {
       '/another/sub/index.html',
       '/another/sub/page.html',
       '/another/sub/page',
+      '/another/api',
+      '/another/api/page.html',
+      '/rapid',
+      '/rapid/page.html',
+      '/health-api.html',
     ].forEach(file => {
       expect(file).toMatch(pattern);
     });
@@ -2443,12 +2453,12 @@ it('Test `detectRoutes` with `featHandleMiss=true`', async () => {
       '/api',
       '/api/',
       '/api/index.html',
-      '/api/page.html',
-      '/api/page',
+      '/api/users.js',
+      '/api/users',
       '/api/sub',
       '/api/sub/index.html',
-      '/api/sub/page.html',
-      '/api/sub/page',
+      '/api/sub/users.js',
+      '/api/sub/users',
     ].forEach(file => {
       expect(file).not.toMatch(pattern);
     });
@@ -2824,6 +2834,7 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
       redirectRoutes,
       rewriteRoutes,
       errorRoutes,
+      limitedRoutes,
     } = await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
@@ -2836,11 +2847,33 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
     expect(errorRoutes).toStrictEqual([
       {
         status: 404,
-        src: '^/(?!.*api).*$',
+        src: '^(?!/api).*$',
         dest: '/404',
       },
     ]);
 
+    // Limited routes should have js but not go since the go plugin is not installed
+    expect(limitedRoutes).toStrictEqual({
+      redirectRoutes: [
+        {
+          src: '^/(api(?:.+)?)/index(?:\\.(?:js))?/?$',
+          headers: {
+            Location: '/$1',
+          },
+          status: 308,
+        },
+        {
+          src: '^/api/(.+)(?:\\.(?:js))/?$',
+          headers: {
+            Location: '/api/$1',
+          },
+          status: 308,
+        },
+      ],
+      rewriteRoutes: [],
+      defaultRoutes: [],
+    });
+
     // expected redirect should match inputs
     const getLocation = createReplaceLocation(redirectRoutes);
 
@@ -2904,11 +2937,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
   {
     const files = ['api/[endpoint].js', 'api/[endpoint]/[id].js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -2936,11 +2966,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
       'api/[endpoint]/[id].js',
     ];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -2974,11 +3001,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
 
     const files = ['public/index.html', 'api/[endpoint].js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, pkg, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, pkg, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3004,11 +3028,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
   {
     const files = ['api/date/index.js', 'api/date.js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3022,11 +3043,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
   {
     const files = ['api/date.js', 'api/[date]/index.js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3051,11 +3069,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
       'api/food.ts',
       'api/ts/gold.ts',
     ];
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3071,11 +3086,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`', async ()
     const functions = { 'api/user.php': { runtime: 'vercel-php@0.1.0' } };
     const files = ['api/user.php'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, { functions, ...options });
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, { functions, ...options });
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3105,11 +3117,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
   {
     const files = ['api/user.go', 'api/team.js', 'api/package.json'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes, limitedRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3119,6 +3128,28 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
       },
     ]);
 
+    // Limited routes should have js but not go since the go plugin is not installed
+    expect(limitedRoutes).toStrictEqual({
+      redirectRoutes: [
+        {
+          src: '^/(api(?:.+)?)/index(?:\\.(?:js))?/?$',
+          headers: {
+            Location: '/$1/',
+          },
+          status: 308,
+        },
+        {
+          src: '^/api/(.+)(?:\\.(?:js))/?$',
+          headers: {
+            Location: '/api/$1/',
+          },
+          status: 308,
+        },
+      ],
+      rewriteRoutes: [],
+      defaultRoutes: [],
+    });
+
     // expected redirect should match inputs
     const getLocation = createReplaceLocation(redirectRoutes);
 
@@ -3152,11 +3183,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
   {
     const files = ['api/[endpoint].js', 'api/[endpoint]/[id].js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3184,11 +3212,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
       'api/[endpoint]/[id].js',
     ];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3222,11 +3247,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
 
     const files = ['public/index.html', 'api/[endpoint].js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, pkg, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, pkg, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3245,11 +3267,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
   {
     const files = ['api/date/index.js', 'api/date.js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3263,11 +3282,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
   {
     const files = ['api/date.js', 'api/[date]/index.js'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3292,11 +3308,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
       'api/food.ts',
       'api/ts/gold.ts',
     ];
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, options);
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, options);
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([
@@ -3312,11 +3325,8 @@ it('Test `detectRoutes` with `featHandleMiss=true`, `cleanUrls=true`, `trailingS
     const functions = { 'api/user.php': { runtime: 'vercel-php@0.1.0' } };
     const files = ['api/user.php'];
 
-    const {
-      defaultRoutes,
-      redirectRoutes,
-      rewriteRoutes,
-    } = await detectBuilders(files, null, { functions, ...options });
+    const { defaultRoutes, redirectRoutes, rewriteRoutes } =
+      await detectBuilders(files, null, { functions, ...options });
     testHeaders(redirectRoutes);
     expect(defaultRoutes).toStrictEqual([]);
     expect(rewriteRoutes).toStrictEqual([

packages/build-utils/test/unit.convert-runtime-to-plugin.test.ts

@@ -0,0 +1,231 @@
+import { join } from 'path';
+import fs from 'fs-extra';
+import { BuildOptions, createLambda, FileFsRef } from '../src';
+import { convertRuntimeToPlugin } from '../src/convert-runtime-to-plugin';
+
+async function fsToJson(dir: string, output: Record<string, any> = {}) {
+  const files = await fs.readdir(dir);
+  for (const file of files) {
+    const fsPath = join(dir, file);
+    const stat = await fs.stat(fsPath);
+    if (stat.isDirectory()) {
+      output[file] = {};
+      await fsToJson(fsPath, output[file]);
+    } else {
+      output[file] = await fs.readFile(fsPath, 'utf8');
+    }
+  }
+  return output;
+}
+
+const invalidFuncWorkpath = join(
+  __dirname,
+  'convert-runtime',
+  'invalid-functions'
+);
+const pythonApiWorkpath = join(__dirname, 'convert-runtime', 'python-api');
+
+describe('convert-runtime-to-plugin', () => {
+  afterEach(async () => {
+    await fs.remove(join(invalidFuncWorkpath, '.output'));
+    await fs.remove(join(pythonApiWorkpath, '.output'));
+  });
+
+  it('should create correct fileystem for python', async () => {
+    const ext = '.py';
+    const workPath = pythonApiWorkpath;
+    const handlerName = 'vc__handler__python';
+    const handlerFileName = handlerName + ext;
+
+    const lambdaOptions = {
+      handler: `${handlerName}.vc_handler`,
+      runtime: 'python3.9',
+      memory: 512,
+      maxDuration: 5,
+      environment: {},
+    };
+
+    const buildRuntime = async (opts: BuildOptions) => {
+      const handlerPath = join(workPath, handlerFileName);
+
+      // This is the usual time at which a Legacy Runtime writes its Lambda launcher.
+      await fs.writeFile(handlerPath, '# handler');
+
+      opts.files[handlerFileName] = new FileFsRef({
+        fsPath: handlerPath,
+      });
+
+      const lambda = await createLambda({
+        files: opts.files,
+        ...lambdaOptions,
+      });
+      return { output: lambda };
+    };
+
+    const lambdaFiles = await fsToJson(workPath);
+    const packageName = 'vercel-plugin-python';
+    const build = await convertRuntimeToPlugin(buildRuntime, packageName, ext);
+
+    await build({ workPath });
+
+    const output = await fsToJson(join(workPath, '.output'));
+
+    delete lambdaFiles['vercel.json'];
+    delete lambdaFiles['vc__handler__python.py'];
+
+    expect(output).toMatchObject({
+      'functions-manifest.json': expect.stringContaining('{'),
+      inputs: {
+        'api-routes-python': lambdaFiles,
+      },
+      server: {
+        pages: {
+          api: {
+            'index.py': expect.stringContaining('handler'),
+            'index.py.nft.json': expect.stringContaining('{'),
+            users: {
+              'get.py': expect.stringContaining('handler'),
+              'get.py.nft.json': expect.stringContaining('{'),
+              'post.py': expect.stringContaining('handler'),
+              'post.py.nft.json': expect.stringContaining('{'),
+            },
+          },
+        },
+      },
+    });
+
+    const funcManifest = JSON.parse(output['functions-manifest.json']);
+    expect(funcManifest).toMatchObject({
+      version: 1,
+      pages: {
+        'api/index.py': lambdaOptions,
+        'api/users/get.py': lambdaOptions,
+        'api/users/post.py': { ...lambdaOptions, memory: 512 },
+      },
+    });
+
+    const indexJson = JSON.parse(output.server.pages.api['index.py.nft.json']);
+    expect(indexJson).toMatchObject({
+      version: 1,
+      files: [
+        {
+          input: `../../../inputs/api-routes-python/api/db/[id].py`,
+          output: 'api/db/[id].py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/api/index.py`,
+          output: 'api/index.py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
+          output: 'api/project/[aid]/[bid]/index.py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/api/users/get.py`,
+          output: 'api/users/get.py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/api/users/post.py`,
+          output: 'api/users/post.py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/file.txt`,
+          output: 'file.txt',
+        },
+        {
+          input: `../../../inputs/api-routes-python/util/date.py`,
+          output: 'util/date.py',
+        },
+        {
+          input: `../../../inputs/api-routes-python/util/math.py`,
+          output: 'util/math.py',
+        },
+      ],
+    });
+
+    const getJson = JSON.parse(
+      output.server.pages.api.users['get.py.nft.json']
+    );
+    expect(getJson).toMatchObject({
+      version: 1,
+      files: [
+        {
+          input: `../../../../inputs/api-routes-python/api/db/[id].py`,
+          output: 'api/db/[id].py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/index.py`,
+          output: 'api/index.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
+          output: 'api/project/[aid]/[bid]/index.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/users/get.py`,
+          output: 'api/users/get.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/users/post.py`,
+          output: 'api/users/post.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/file.txt`,
+          output: 'file.txt',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/util/date.py`,
+          output: 'util/date.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/util/math.py`,
+          output: 'util/math.py',
+        },
+      ],
+    });
+
+    const postJson = JSON.parse(
+      output.server.pages.api.users['post.py.nft.json']
+    );
+    expect(postJson).toMatchObject({
+      version: 1,
+      files: [
+        {
+          input: `../../../../inputs/api-routes-python/api/db/[id].py`,
+          output: 'api/db/[id].py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/index.py`,
+          output: 'api/index.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
+          output: 'api/project/[aid]/[bid]/index.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/users/get.py`,
+          output: 'api/users/get.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/api/users/post.py`,
+          output: 'api/users/post.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/file.txt`,
+          output: 'file.txt',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/util/date.py`,
+          output: 'util/date.py',
+        },
+        {
+          input: `../../../../inputs/api-routes-python/util/math.py`,
+          output: 'util/math.py',
+        },
+      ],
+    });
+
+    expect(output.server.pages['file.txt']).toBeUndefined();
+    expect(output.server.pages.api['file.txt']).toBeUndefined();
+  });
+});

packages/cli/@types/intercept-stdout/index.d.ts

@@ -1,11 +0,0 @@
-declare module 'intercept-stdout' {
-  export default function (fn?: InterceptFn): UnhookIntercept
-}
-
-interface InterceptFn {
-  (text: string): string | void
-}
-
-interface UnhookIntercept {
-  (): void
-}

packages/cli/@types/promisepipe/index.d.ts

@@ -1,5 +0,0 @@
-declare module 'promisepipe' {
-  export default function (
-    ...streams: Array<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>
-  ): Promise<void>
-}

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "23.1.3-canary.0",
+  "version": "23.1.3-canary.53",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -12,33 +12,15 @@
   },
   "scripts": {
     "preinstall": "node ./scripts/preinstall.js",
-    "test-unit": "nyc ava test/unit.js test/dev-builder.unit.js test/dev-router.unit.js test/dev-server.unit.js test/dev-validate.unit.js --serial --fail-fast --verbose",
+    "test": "jest",
+    "test-unit": "jest --coverage --verbose",
     "test-integration-cli": "rimraf test/fixtures/integration && ava test/integration.js --serial --fail-fast --verbose",
     "test-integration-dev": "ava test/dev/integration.js --serial --fail-fast --verbose",
     "prepublishOnly": "yarn build",
-    "coverage": "nyc report --reporter=text-lcov > coverage.lcov && codecov",
+    "coverage": "codecov",
     "build": "node -r ts-eager/register ./scripts/build.ts",
     "build-dev": "node -r ts-eager/register ./scripts/build.ts --dev"
   },
-  "nyc": {
-    "include": [
-      "src/**"
-    ],
-    "extension": [
-      ".js",
-      ".ts"
-    ],
-    "require": [
-      "ts-node/register"
-    ],
-    "reporter": [
-      "text",
-      "html"
-    ],
-    "sourceMap": true,
-    "instrument": true,
-    "all": true
-  },
   "bin": {
     "vc": "./dist/index.js",
     "vercel": "./dist/index.js"
@@ -61,14 +43,17 @@
     "node": ">= 12"
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.0",
-    "@vercel/go": "1.2.4-canary.0",
-    "@vercel/node": "1.12.2-canary.0",
-    "@vercel/python": "2.0.6-canary.0",
-    "@vercel/ruby": "1.2.8-canary.0",
-    "update-notifier": "4.1.0"
+    "@vercel/build-utils": "2.12.3-canary.32",
+    "@vercel/go": "1.2.4-canary.4",
+    "@vercel/node": "1.12.2-canary.7",
+    "@vercel/python": "2.1.2-canary.1",
+    "@vercel/ruby": "1.2.8-canary.6",
+    "update-notifier": "4.1.0",
+    "vercel-plugin-middleware": "0.0.0-canary.7",
+    "vercel-plugin-node": "1.12.2-canary.24"
   },
   "devDependencies": {
+    "@next/env": "11.1.2",
     "@sentry/node": "5.5.0",
     "@sindresorhus/slugify": "0.11.0",
     "@tootallnate/once": "1.1.2",
@@ -76,13 +61,16 @@
     "@types/ansi-regex": "4.0.0",
     "@types/async-retry": "1.2.1",
     "@types/bytes": "3.0.0",
+    "@types/chance": "1.1.3",
     "@types/debug": "0.0.31",
     "@types/dotenv": "6.1.1",
     "@types/escape-html": "0.0.20",
-    "@types/fs-extra": "5.0.5",
+    "@types/express": "4.17.13",
+    "@types/fs-extra": "9.0.13",
     "@types/glob": "7.1.1",
     "@types/http-proxy": "1.16.2",
     "@types/inquirer": "7.3.1",
+    "@types/jest": "27.0.1",
     "@types/load-json-file": "2.0.7",
     "@types/mime-types": "2.1.0",
     "@types/minimatch": "3.0.3",
@@ -99,10 +87,12 @@
     "@types/text-table": "0.2.0",
     "@types/title": "3.4.1",
     "@types/universal-analytics": "0.4.2",
+    "@types/update-notifier": "5.1.0",
     "@types/which": "1.3.2",
     "@types/write-json-file": "2.2.1",
-    "@vercel/frameworks": "0.5.1-canary.1",
+    "@vercel/frameworks": "0.5.1-canary.16",
     "@vercel/ncc": "0.24.0",
+    "@vercel/nft": "0.17.0",
     "@zeit/fun": "0.11.2",
     "@zeit/source-map-support": "0.6.2",
     "ajv": "6.12.2",
@@ -116,6 +106,7 @@
     "ava": "2.2.0",
     "bytes": "3.0.0",
     "chalk": "4.1.0",
+    "chance": "1.1.7",
     "chokidar": "3.3.1",
     "clipboardy": "2.1.0",
     "codecov": "3.8.2",
@@ -131,8 +122,9 @@
     "escape-html": "1.0.3",
     "esm": "3.1.4",
     "execa": "3.2.0",
+    "express": "4.17.1",
     "fast-deep-equal": "3.1.3",
-    "fs-extra": "7.0.1",
+    "fs-extra": "10.0.0",
     "get-port": "5.1.1",
     "glob": "7.1.2",
     "http-proxy": "1.18.1",
@@ -149,7 +141,6 @@
     "ms": "2.1.2",
     "node-fetch": "2.6.1",
     "npm-package-arg": "6.1.0",
-    "nyc": "13.2.0",
     "open": "8.2.0",
     "ora": "3.4.0",
     "pcre-to-regexp": "1.0.0",
@@ -162,7 +153,6 @@
     "rimraf": "3.0.2",
     "semver": "5.5.0",
     "serve-handler": "6.1.1",
-    "sinon": "4.4.2",
     "strip-ansi": "5.2.0",
     "stripe": "5.1.0",
     "tar-fs": "1.16.3",
@@ -179,5 +169,19 @@
     "which": "2.0.2",
     "write-json-file": "2.2.0",
     "xdg-app-paths": "5.1.0"
+  },
+  "jest": {
+    "preset": "ts-jest",
+    "globals": {
+      "ts-jest": {
+        "diagnostics": false,
+        "isolatedModules": true
+      }
+    },
+    "verbose": false,
+    "testEnvironment": "node",
+    "testMatch": [
+      "<rootDir>/test/**/*.test.ts"
+    ]
   }
 }

packages/cli/scripts/build.ts

@@ -4,6 +4,7 @@ import { join } from 'path';
 import { remove, writeFile } from 'fs-extra';
 
 const dirRoot = join(__dirname, '..');
+const distRoot = join(dirRoot, 'dist');
 
 async function createConstants() {
   console.log('Creating constants.ts');
@@ -48,13 +49,12 @@ async function main() {
 
   // Do the initial `ncc` build
   console.log();
-  const src = join(dirRoot, 'src');
   const args = ['ncc', 'build', '--external', 'update-notifier'];
   if (isDev) {
     args.push('--source-map');
   }
-  args.push(src);
-  await execa('yarn', args, { stdio: 'inherit' });
+  args.push('src/index.ts');
+  await execa('yarn', args, { stdio: 'inherit', cwd: dirRoot });
 
   // `ncc` has some issues with `@zeit/fun`'s runtime files:
   //   - Executable bits on the `bootstrap` files appear to be lost:
@@ -72,19 +72,13 @@ async function main() {
     dirRoot,
     '../../node_modules/@zeit/fun/dist/src/runtimes'
   );
-  const dest = join(dirRoot, 'dist/runtimes');
-  await cpy('**/*', dest, { parents: true, cwd: runtimes });
+  await cpy('**/*', join(distRoot, 'runtimes'), {
+    parents: true,
+    cwd: runtimes,
+  });
 
-  // Band-aid to delete stuff that `ncc` bundles, but it shouldn't:
-
-  // TypeScript definition files from `@vercel/build-utils`
-  await remove(join(dirRoot, 'dist', 'dist'));
-
-  // The Readme and `package.json` from "config-chain" module
-  await remove(join(dirRoot, 'dist', 'config-chain'));
-
-  // A bunch of source `.ts` files from CLI's `util` directory
-  await remove(join(dirRoot, 'dist', 'util'));
+  // Band-aid to bundle stuff that `ncc` neglects to bundle
+  await cpy(join(dirRoot, 'src/util/projects/VERCEL_DIR_README.txt'), distRoot);
 
   console.log('Finished building Vercel CLI');
 }

packages/cli/src/commands/alias/set.ts

@@ -421,7 +421,7 @@ function handleCreateAliasError<T>(
   return error;
 }
 
-function getTargetsForAlias(args: string[], { alias }: VercelConfig) {
+function getTargetsForAlias(args: string[], { alias }: VercelConfig = {}) {
   if (args.length) {
     return [args[args.length - 1]]
       .map(target => (target.indexOf('.') !== -1 ? toHost(target) : target))

packages/cli/src/commands/billing/index.js

@@ -51,8 +51,6 @@ const help = () => {
 };
 
 let argv;
-let debug;
-let apiUrl;
 let subcommand;
 
 export default async client => {
@@ -65,8 +63,6 @@ export default async client => {
 
   argv._ = argv._.slice(1);
 
-  debug = argv['--debug'];
-  apiUrl = client.apiUrl;
   subcommand = argv._[0];
 
   if (argv['--help'] || !subcommand) {
@@ -76,17 +72,13 @@ export default async client => {
 
   const {
     output,
-    authConfig: { token },
     config: { currentTeam },
   } = client;
 
   const start = new Date();
   const creditCards = new NowCreditCards({
-    apiUrl,
-    token,
-    debug,
+    client,
     currentTeam,
-    output,
   });
 
   let contextName = null;

packages/cli/src/commands/build.ts

@@ -0,0 +1,879 @@
+import { loadEnvConfig, processEnv } from '@next/env';
+import {
+  execCommand,
+  getScriptName,
+  GlobOptions,
+  scanParentDirs,
+  spawnAsync,
+} from '@vercel/build-utils';
+import { nodeFileTrace } from '@vercel/nft';
+import Sema from 'async-sema';
+import chalk from 'chalk';
+import { SpawnOptions } from 'child_process';
+import { assert } from 'console';
+import { createHash } from 'crypto';
+import fs from 'fs-extra';
+import ogGlob from 'glob';
+import { dirname, isAbsolute, join, parse, relative, resolve } from 'path';
+import pluralize from 'pluralize';
+import Client from '../util/client';
+import { VercelConfig } from '../util/dev/types';
+import { emoji, prependEmoji } from '../util/emoji';
+import getArgs from '../util/get-args';
+import handleError from '../util/handle-error';
+import confirm from '../util/input/confirm';
+import { isSettingValue } from '../util/is-setting-value';
+import cmd from '../util/output/cmd';
+import logo from '../util/output/logo';
+import param from '../util/output/param';
+import stamp from '../util/output/stamp';
+import { getCommandName, getPkgName } from '../util/pkg-name';
+import { loadCliPlugins } from '../util/plugins';
+import { findFramework } from '../util/projects/find-framework';
+import { VERCEL_DIR } from '../util/projects/link';
+import { readProjectSettings } from '../util/projects/project-settings';
+import pull from './pull';
+
+const sema = new Sema(16, {
+  capacity: 100,
+});
+
+const help = () => {
+  return console.log(`
+  ${chalk.bold(`${logo} ${getPkgName()} build`)}
+
+ ${chalk.dim('Options:')}
+
+    -h, --help                     Output usage information
+    -A ${chalk.bold.underline('FILE')}, --local-config=${chalk.bold.underline(
+    'FILE'
+  )}   Path to the local ${'`vercel.json`'} file
+    -Q ${chalk.bold.underline('DIR')}, --global-config=${chalk.bold.underline(
+    'DIR'
+  )}    Path to the global ${'`.vercel`'} directory
+    --cwd [path]                   The current working directory
+    -d, --debug                    Debug mode [off]
+    -y, --yes                      Skip the confirmation prompt
+
+  ${chalk.dim('Examples:')}
+
+  ${chalk.gray('–')} Build the project
+
+    ${chalk.cyan(`$ ${getPkgName()} build`)}
+    ${chalk.cyan(`$ ${getPkgName()} build --cwd ./path-to-project`)}
+`);
+};
+
+const OUTPUT_DIR = '.output';
+
+export default async function main(client: Client) {
+  if (process.env.__VERCEL_BUILD_RUNNING) {
+    client.output.error(
+      `${cmd(
+        `${getPkgName()} build`
+      )} must not recursively invoke itself. Check the Build Command in the Project Settings or the ${cmd(
+        'build'
+      )} script in ${cmd('package.json')}`
+    );
+    client.output.error(
+      `Learn More: https://vercel.link/recursive-invocation-of-commands`
+    );
+    return 1;
+  } else {
+    process.env.__VERCEL_BUILD_RUNNING = '1';
+  }
+
+  let argv;
+  const buildStamp = stamp();
+  try {
+    argv = getArgs(client.argv.slice(2), {
+      '--debug': Boolean,
+      '--cwd': String,
+    });
+  } catch (err) {
+    handleError(err);
+    return 1;
+  }
+
+  if (argv['--help']) {
+    help();
+    return 2;
+  }
+
+  let cwd = argv['--cwd'] || process.cwd();
+
+  let project = await readProjectSettings(join(cwd, VERCEL_DIR));
+  // If there are no project settings, only then do we pull them down
+  while (!project?.settings) {
+    const confirmed = await confirm(
+      `No Project Settings found locally. Run ${getCommandName(
+        'pull'
+      )} for retrieving them?`,
+      true
+    );
+    if (!confirmed) {
+      client.output.print(`Aborted. No Project Settings retrieved.\n`);
+      return 0;
+    }
+    const result = await pull(client);
+    if (result !== 0) {
+      return result;
+    }
+    project = await readProjectSettings(join(cwd, VERCEL_DIR));
+  }
+
+  // If `rootDirectory` exists, then `baseDir` will be the repo's root directory.
+  const baseDir = cwd;
+
+  cwd = project.settings.rootDirectory
+    ? join(cwd, project.settings.rootDirectory)
+    : cwd;
+
+  // Load the environment
+  const { combinedEnv, loadedEnvFiles } = loadEnvConfig(cwd, false, {
+    info: () => ({}), // we don't want to log this yet.
+    error: (...args: any[]) => client.output.error(args.join(' ')),
+  });
+
+  // Set process.env with loaded environment variables
+  processEnv(loadedEnvFiles);
+
+  const spawnOpts: {
+    env: Record<string, string | undefined>;
+  } = {
+    env: { ...combinedEnv, VERCEL: '1' },
+  };
+
+  process.chdir(cwd);
+
+  const framework = findFramework(project.settings.framework);
+  // If this is undefined, we bail. If it is null, then findFramework should return "Other",
+  // so this should really never happen, but just in case....
+  if (framework === undefined) {
+    client.output.error(
+      `Framework detection failed or is malformed. Please run ${getCommandName(
+        'pull'
+      )} again.`
+    );
+    return 1;
+  }
+
+  const buildState = { ...project.settings };
+  const formatSetting = (
+    name: string,
+    override: string | null | undefined,
+    defaults: typeof framework.settings.outputDirectory
+  ) =>
+    `  - ${chalk.bold(`${name}:`)} ${`${
+      override
+        ? override + ` (override)`
+        : 'placeholder' in defaults
+        ? chalk.italic(`${defaults.placeholder}`)
+        : defaults.value
+    }`}`;
+  console.log(`Retrieved Project Settings:`);
+  console.log(
+    chalk.dim(`  - ${chalk.bold(`Framework Preset:`)} ${framework.name}`)
+  );
+  console.log(
+    chalk.dim(
+      formatSetting(
+        'Build Command',
+        project.settings.buildCommand,
+        framework.settings.buildCommand
+      )
+    )
+  );
+  console.log(
+    chalk.dim(
+      formatSetting(
+        'Output Directory',
+        project.settings.outputDirectory,
+        framework.settings.outputDirectory
+      )
+    )
+  );
+
+  buildState.outputDirectory =
+    project.settings.outputDirectory ||
+    (isSettingValue(framework.settings.outputDirectory)
+      ? framework.settings.outputDirectory.value
+      : null);
+  buildState.rootDirectory = project.settings.rootDirectory;
+
+  if (loadedEnvFiles.length > 0) {
+    console.log(
+      `Loaded Environment Variables from ${loadedEnvFiles.length} ${pluralize(
+        'file',
+        loadedEnvFiles.length
+      )}:`
+    );
+    for (let envFile of loadedEnvFiles) {
+      console.log(chalk.dim(`  - ${envFile.path}`));
+    }
+  }
+
+  // Load plugins
+  const debug = argv['--debug'];
+  let plugins;
+  try {
+    plugins = await loadCliPlugins(cwd, client.output);
+  } catch (error) {
+    client.output.error('Failed to load CLI Plugins');
+    handleError(error, { debug });
+    return 1;
+  }
+
+  const origLog = console.log;
+  const origErr = console.error;
+  const prefixedLog = (
+    prefix: string,
+    args: any[],
+    logger: (...args: any[]) => void
+  ) => {
+    if (typeof args[0] === 'string') {
+      args[0] = `${prefix} ${args[0]}`;
+    } else {
+      args.unshift(prefix);
+    }
+    return logger(...args);
+  };
+
+  if (plugins?.pluginCount && plugins?.pluginCount > 0) {
+    console.log(
+      `Loaded ${plugins.pluginCount} CLI ${pluralize(
+        'Plugin',
+        plugins.pluginCount
+      )}`
+    );
+    // preBuild Plugins
+    if (plugins.preBuildPlugins.length > 0) {
+      console.log(
+        `Running ${plugins.pluginCount} CLI ${pluralize(
+          'Plugin',
+          plugins.pluginCount
+        )} before Build Command:`
+      );
+      for (let item of plugins.preBuildPlugins) {
+        const { name, plugin, color } = item;
+        if (typeof plugin.preBuild === 'function') {
+          const pluginStamp = stamp();
+          const fullName = name + '.preBuild';
+          const prefix = chalk.gray('  > ') + color(fullName + ':');
+          client.output.debug(`Running ${fullName}:`);
+          try {
+            console.log = (...args: any[]) =>
+              prefixedLog(prefix, args, origLog);
+            console.error = (...args: any[]) =>
+              prefixedLog(prefix, args, origErr);
+            await plugin.preBuild();
+            client.output.debug(
+              `Completed ${fullName} ${chalk.dim(`${pluginStamp()}`)}`
+            );
+          } catch (error) {
+            client.output.error(`${prefix} failed`);
+            handleError(error, { debug });
+            return 1;
+          } finally {
+            console.log = origLog;
+            console.error = origErr;
+          }
+        }
+      }
+    }
+  }
+
+  // Clean the output directory
+  fs.removeSync(join(cwd, OUTPUT_DIR));
+
+  if (framework && process.env.VERCEL_URL && 'envPrefix' in framework) {
+    for (const key of Object.keys(process.env)) {
+      if (key.startsWith('VERCEL_')) {
+        const newKey = `${framework.envPrefix}${key}`;
+        // Set `process.env` and `spawnOpts.env` to make sure the variables are
+        // available to the `build` step and the CLI Plugins.
+        process.env[newKey] = process.env[newKey] || process.env[key];
+        spawnOpts.env[newKey] = process.env[newKey];
+      }
+    }
+  }
+
+  // Required for Next.js to produce the correct `.nft.json` files.
+  spawnOpts.env.NEXT_PRIVATE_OUTPUT_TRACE_ROOT = baseDir;
+
+  // Yarn v2 PnP mode may be activated, so force
+  // "node-modules" linker style
+  const env = {
+    YARN_NODE_LINKER: 'node-modules',
+    ...spawnOpts.env,
+  };
+
+  if (typeof buildState.buildCommand === 'string') {
+    console.log(`Running Build Command: ${cmd(buildState.buildCommand)}`);
+    await execCommand(buildState.buildCommand, {
+      ...spawnOpts,
+      env,
+      cwd,
+    });
+  } else if (fs.existsSync(join(cwd, 'package.json'))) {
+    await runPackageJsonScript(
+      client,
+      cwd,
+      ['vercel-build', 'now-build', 'build'],
+      spawnOpts
+    );
+  } else if (typeof framework.settings.buildCommand.value === 'string') {
+    console.log(
+      `Running Build Command: ${cmd(framework.settings.buildCommand.value)}`
+    );
+    await execCommand(framework.settings.buildCommand.value, {
+      ...spawnOpts,
+      env,
+      cwd,
+    });
+  }
+
+  if (!fs.existsSync(join(cwd, OUTPUT_DIR))) {
+    let dotNextDir: string | null = null;
+
+    // If a custom `outputDirectory` was set, we'll need to verify
+    // if it's `.next` output, or just static output.
+    const userOutputDirectory = project.settings.outputDirectory;
+
+    if (typeof userOutputDirectory === 'string') {
+      if (fs.existsSync(join(cwd, userOutputDirectory, 'BUILD_ID'))) {
+        dotNextDir = join(cwd, userOutputDirectory);
+        client.output.debug(
+          `Consider ${param(userOutputDirectory)} as ${param('.next')} output.`
+        );
+      }
+    } else if (fs.existsSync(join(cwd, '.next'))) {
+      dotNextDir = join(cwd, '.next');
+      client.output.debug(`Found ${param('.next')} directory.`);
+    }
+
+    // We cannot rely on the `framework` alone, as it might be a static export,
+    // and the current build might use a differnt project that's not in the settings.
+    const isNextOutput = Boolean(dotNextDir);
+    const outputDir = isNextOutput ? OUTPUT_DIR : join(OUTPUT_DIR, 'static');
+    const distDir =
+      dotNextDir ||
+      userOutputDirectory ||
+      (await framework.getFsOutputDir(cwd));
+
+    await fs.ensureDir(join(cwd, outputDir));
+
+    const copyStamp = stamp();
+    client.output.spinner(
+      `Copying files from ${param(distDir)} to ${param(outputDir)}`
+    );
+    const files = await glob(join(relative(cwd, distDir), '**'), {
+      ignore: [
+        'node_modules/**',
+        '.vercel/**',
+        '.env',
+        '.env.*',
+        '.*ignore',
+        '_middleware.ts',
+        '_middleware.mts',
+        '_middleware.cts',
+        '_middleware.mjs',
+        '_middleware.cjs',
+        '_middleware.js',
+        'api/**',
+        '.git/**',
+        '.next/cache/**',
+      ],
+      nodir: true,
+      dot: true,
+      cwd,
+      absolute: true,
+    });
+    await Promise.all(
+      files.map(f =>
+        smartCopy(
+          client,
+          f,
+          distDir === '.'
+            ? join(cwd, outputDir, relative(cwd, f))
+            : f.replace(distDir, outputDir)
+        )
+      )
+    );
+    client.output.stopSpinner();
+    console.log(
+      `Copied ${files.length.toLocaleString()} files from ${param(
+        distDir
+      )} to ${param(outputDir)} ${copyStamp()}`
+    );
+
+    const buildManifestPath = join(cwd, OUTPUT_DIR, 'build-manifest.json');
+    const routesManifestPath = join(cwd, OUTPUT_DIR, 'routes-manifest.json');
+
+    if (!fs.existsSync(buildManifestPath)) {
+      client.output.debug(
+        `Generating build manifest: ${param(buildManifestPath)}`
+      );
+      const buildManifest = {
+        version: 1,
+        cache: framework.cachePattern ? [framework.cachePattern] : [],
+      };
+      await fs.writeJSON(buildManifestPath, buildManifest, { spaces: 2 });
+    }
+
+    if (!fs.existsSync(routesManifestPath)) {
+      client.output.debug(
+        `Generating routes manifest: ${param(routesManifestPath)}`
+      );
+      const routesManifest = {
+        version: 3,
+        pages404: true,
+        basePath: '',
+        redirects: framework.defaultRedirects ?? [],
+        headers: framework.defaultHeaders ?? [],
+        dynamicRoutes: [],
+        dataRoutes: [],
+        rewrites: framework.defaultRewrites ?? [],
+      };
+      await fs.writeJSON(
+        join(cwd, OUTPUT_DIR, 'routes-manifest.json'),
+        routesManifest,
+        { spaces: 2 }
+      );
+    }
+
+    // Special Next.js processing.
+    if (isNextOutput) {
+      // The contents of `.output/static` should be placed inside of `.output/static/_next/static`
+      const tempStatic = '___static';
+      await fs.rename(
+        join(cwd, OUTPUT_DIR, 'static'),
+        join(cwd, OUTPUT_DIR, tempStatic)
+      );
+      await fs.mkdirp(join(cwd, OUTPUT_DIR, 'static', '_next', 'static'));
+      await fs.rename(
+        join(cwd, OUTPUT_DIR, tempStatic),
+        join(cwd, OUTPUT_DIR, 'static', '_next', 'static')
+      );
+
+      // Next.js might reference files from the `static` directory in `middleware-manifest.json`.
+      // Since we move all files from `static` to `static/_next/static`, we'll need to change
+      // those references as well and update the manifest file.
+      const middlewareManifest = join(
+        cwd,
+        OUTPUT_DIR,
+        'server',
+        'middleware-manifest.json'
+      );
+      if (fs.existsSync(middlewareManifest)) {
+        const manifest = await fs.readJSON(middlewareManifest);
+        Object.keys(manifest.middleware).forEach(key => {
+          const files = manifest.middleware[key].files.map((f: string) => {
+            if (f.startsWith('static/')) {
+              const next = f.replace(/^static\//gm, 'static/_next/static/');
+              client.output.debug(
+                `Replacing file in \`middleware-manifest.json\`: ${f} => ${next}`
+              );
+              return next;
+            }
+
+            return f;
+          });
+
+          manifest.middleware[key].files = files;
+        });
+
+        await fs.writeJSON(middlewareManifest, manifest);
+      }
+
+      // We want to pick up directories for user-provided static files into `.`output/static`.
+      // More specifically, the static directory contents would then be mounted to `output/static/static`,
+      // and the public directory contents would be mounted to `output/static`. Old Next.js versions
+      // allow `static`, and newer ones allow both, but since there's nobody that actually uses both,
+      // we can check for the existence of both and pick the first match that we find (first
+      // `public`, then`static`). We can't read both at the same time because that would mean we'd
+      // read public for old Next.js versions that don't support it, which might be breaking (and
+      // we don't want to make vercel build specific framework versions).
+      const nextSrcDirectory = dirname(distDir);
+
+      const publicFiles = await glob('public/**', {
+        nodir: true,
+        dot: true,
+        cwd: nextSrcDirectory,
+        absolute: true,
+      });
+      if (publicFiles.length > 0) {
+        await Promise.all(
+          publicFiles.map(f =>
+            smartCopy(
+              client,
+              f,
+              join(
+                OUTPUT_DIR,
+                'static',
+                relative(join(dirname(distDir), 'public'), f)
+              )
+            )
+          )
+        );
+      } else {
+        const staticFiles = await glob('static/**', {
+          nodir: true,
+          dot: true,
+          cwd: nextSrcDirectory,
+          absolute: true,
+        });
+        await Promise.all(
+          staticFiles.map(f =>
+            smartCopy(
+              client,
+              f,
+              join(
+                OUTPUT_DIR,
+                'static',
+                'static',
+                relative(join(dirname(distDir), 'static'), f)
+              )
+            )
+          )
+        );
+      }
+
+      // Regardless of the Next.js version, we make sure that it is compatible with
+      // the Filesystem API. We get there by  moving all the files needed
+      // into the outputs directory `inputs` folder.  Next.js is > 12, we can
+      // read the .nft.json files directly. If there aren't .nft.json files
+      // we trace and create them. We then resolve the files in each nft file list
+      // and move them into the "inputs" directory. We rename them with hashes to
+      // prevent collisions and then update the related .nft files accordingly
+      // to point to the newly named input files. Again, all of this is so that Next.js
+      // works with the Filesystem API (and so .output contains all inputs
+      // needed to run Next.js) and `vc --prebuilt`.
+      const nftFiles = await glob(join(OUTPUT_DIR, '**', '*.nft.json'), {
+        nodir: true,
+        dot: true,
+        ignore: ['cache/**'],
+        cwd,
+        absolute: true,
+      });
+
+      // If there are no .nft.json files, we know that Next.js < 12. We then
+      // execute the tracing on our own.
+      if (nftFiles.length === 0) {
+        const serverFiles = await glob(
+          join(OUTPUT_DIR, 'server', 'pages', '**', '*.js'),
+          {
+            nodir: true,
+            dot: true,
+            cwd,
+            ignore: ['webpack-runtime.js'],
+            absolute: true,
+          }
+        );
+        for (let f of serverFiles) {
+          const { ext, dir } = parse(f);
+          const { fileList } = await nodeFileTrace([f], {
+            ignore: [
+              relative(cwd, f),
+              'node_modules/next/dist/pages/**/*',
+              'node_modules/next/dist/compiled/webpack/(bundle4|bundle5).js',
+              'node_modules/react/**/*.development.js',
+              'node_modules/react-dom/**/*.development.js',
+              'node_modules/use-subscription/**/*.development.js',
+              'node_modules/sharp/**/*',
+            ],
+          });
+          fileList.delete(relative(cwd, f));
+          await resolveNftToOutput({
+            client,
+            baseDir,
+            outputDir: OUTPUT_DIR,
+            nftFileName: f.replace(ext, '.js.nft.json'),
+            distDir,
+            nft: {
+              version: 1,
+              files: Array.from(fileList).map(fileListEntry =>
+                relative(dir, fileListEntry)
+              ),
+            },
+          });
+        }
+      } else {
+        for (let f of nftFiles) {
+          const json = await fs.readJson(f);
+          await resolveNftToOutput({
+            client,
+            baseDir,
+            outputDir: OUTPUT_DIR,
+            nftFileName: f,
+            nft: json,
+            distDir,
+          });
+        }
+      }
+
+      const requiredServerFilesPath = join(
+        OUTPUT_DIR,
+        'required-server-files.json'
+      );
+
+      if (fs.existsSync(requiredServerFilesPath)) {
+        client.output.debug(`Resolve ${param('required-server-files.json')}.`);
+
+        const requiredServerFilesJson = await fs.readJSON(
+          requiredServerFilesPath
+        );
+
+        await fs.writeJSON(requiredServerFilesPath, {
+          ...requiredServerFilesJson,
+          appDir: '.',
+          files: requiredServerFilesJson.files.map((i: string) => {
+            const originalPath = join(requiredServerFilesJson.appDir, i);
+            const relPath = join(OUTPUT_DIR, relative(distDir, originalPath));
+
+            const absolutePath = join(cwd, relPath);
+            const output = relative(baseDir, absolutePath);
+
+            return relPath === output
+              ? relPath
+              : {
+                  input: relPath,
+                  output,
+                };
+          }),
+        });
+      }
+    }
+  }
+
+  // Build Plugins
+  if (plugins?.buildPlugins && plugins.buildPlugins.length > 0) {
+    console.log(
+      `Running ${plugins.pluginCount} CLI ${pluralize(
+        'Plugin',
+        plugins.pluginCount
+      )} after Build Command:`
+    );
+    let vercelConfig: VercelConfig = {};
+    try {
+      vercelConfig = await fs.readJSON(join(cwd, 'vercel.json'));
+    } catch (error) {
+      if (error.code !== 'ENOENT') {
+        throw new Error(`Failed to read vercel.json: ${error.message}`);
+      }
+    }
+    for (let item of plugins.buildPlugins) {
+      const { name, plugin, color } = item;
+      if (typeof plugin.build === 'function') {
+        const pluginStamp = stamp();
+        const fullName = name + '.build';
+        const prefix = chalk.gray('  > ') + color(fullName + ':');
+        client.output.debug(`Running ${fullName}:`);
+        try {
+          console.log = (...args: any[]) => prefixedLog(prefix, args, origLog);
+          console.error = (...args: any[]) =>
+            prefixedLog(prefix, args, origErr);
+          await plugin.build({
+            vercelConfig,
+            workPath: cwd,
+          });
+          client.output.debug(
+            `Completed ${fullName} ${chalk.dim(`${pluginStamp()}`)}`
+          );
+        } catch (error) {
+          client.output.error(`${prefix} failed`);
+          handleError(error, { debug });
+          return 1;
+        } finally {
+          console.log = origLog;
+          console.error = origLog;
+        }
+      }
+    }
+  }
+
+  console.log(
+    `${prependEmoji(
+      `Build Completed in ${chalk.bold(OUTPUT_DIR)} ${chalk.gray(
+        buildStamp()
+      )}`,
+      emoji('success')
+    )}`
+  );
+
+  return 0;
+}
+
+export async function runPackageJsonScript(
+  client: Client,
+  destPath: string,
+  scriptNames: string | Iterable<string>,
+  spawnOpts?: SpawnOptions
+) {
+  assert(isAbsolute(destPath));
+
+  const { packageJson, cliType, lockfileVersion } = await scanParentDirs(
+    destPath,
+    true
+  );
+  const scriptName = getScriptName(
+    packageJson,
+    typeof scriptNames === 'string' ? [scriptNames] : scriptNames
+  );
+  if (!scriptName) return false;
+
+  client.output.debug('Running user script...');
+  const runScriptTime = Date.now();
+
+  const opts: any = { cwd: destPath, ...spawnOpts };
+  const env = (opts.env = { ...process.env, ...opts.env });
+
+  if (cliType === 'npm') {
+    opts.prettyCommand = `npm run ${scriptName}`;
+
+    if (typeof lockfileVersion === 'number' && lockfileVersion >= 2) {
+      // Ensure that npm 7 is at the beginning of the `$PATH`
+      env.PATH = `/node16/bin-npm7:${env.PATH}`;
+    }
+  } else {
+    opts.prettyCommand = `yarn run ${scriptName}`;
+
+    // Yarn v2 PnP mode may be activated, so force "node-modules" linker style
+    if (!env.YARN_NODE_LINKER) {
+      env.YARN_NODE_LINKER = 'node-modules';
+    }
+  }
+
+  console.log(`Running Build Command: ${cmd(opts.prettyCommand)}\n`);
+  await spawnAsync(cliType, ['run', scriptName], opts);
+  console.log(); // give it some room
+  client.output.debug(`Script complete [${Date.now() - runScriptTime}ms]`);
+  return true;
+}
+
+async function linkOrCopy(existingPath: string, newPath: string) {
+  try {
+    if (
+      newPath.endsWith('.nft.json') ||
+      newPath.endsWith('middleware-manifest.json') ||
+      newPath.endsWith('required-server-files.json')
+    ) {
+      await fs.copy(existingPath, newPath, {
+        overwrite: true,
+      });
+    } else {
+      await fs.createLink(existingPath, newPath);
+    }
+  } catch (err: any) {
+    // eslint-disable-line
+    // If a symlink to the same file already exists
+    // then trying to copy it will make an empty file from it.
+    if (err['code'] === 'EEXIST') return;
+    // In some VERY rare cases (1 in a thousand), symlink creation fails on Windows.
+    // In that case, we just fall back to copying.
+    // This issue is reproducible with "pnpm add @material-ui/icons@4.9.1"
+    await fs.copy(existingPath, newPath, {
+      overwrite: true,
+    });
+  }
+}
+
+async function smartCopy(client: Client, from: string, to: string) {
+  sema.acquire();
+  try {
+    client.output.debug(`Copying from ${from} to ${to}`);
+    await linkOrCopy(from, to);
+  } finally {
+    sema.release();
+  }
+}
+
+async function glob(pattern: string, options: GlobOptions): Promise<string[]> {
+  return new Promise((resolve, reject) => {
+    ogGlob(pattern, options, (err, files) => {
+      err ? reject(err) : resolve(files);
+    });
+  });
+}
+
+/**
+ * Computes a hash for the given buf.
+ *
+ * @param {Buffer} file data
+ * @return {String} hex digest
+ */
+function hash(buf: Buffer): string {
+  return createHash('sha1').update(buf).digest('hex');
+}
+
+interface NftFile {
+  version: number;
+  files: (string | { input: string; output: string })[];
+}
+
+// resolveNftToOutput takes nft file and moves all of its trace files
+// into the specified directory + `inputs`, (renaming them to their hash + ext) and
+// subsequently updating the original nft file accordingly. This is done
+// to make the `.output` directory be self-contained, so that it works
+// properly with `vc --prebuilt`.
+async function resolveNftToOutput({
+  client,
+  baseDir,
+  outputDir,
+  nftFileName,
+  distDir,
+  nft,
+}: {
+  client: Client;
+  baseDir: string;
+  outputDir: string;
+  nftFileName: string;
+  distDir: string;
+  nft: NftFile;
+}) {
+  client.output.debug(`Processing and resolving ${nftFileName}`);
+  await fs.ensureDir(join(outputDir, 'inputs'));
+  const newFilesList: NftFile['files'] = [];
+
+  // If `distDir` is a subdirectory, then the input has to be resolved to where the `.output` directory will be.
+  const relNftFileName = relative(outputDir, nftFileName);
+  const origNftFilename = join(distDir, relNftFileName);
+
+  if (relNftFileName.startsWith('cache/')) {
+    // No need to process the `cache/` directory.
+    // Paths in it might also not be relative to `cache` itself.
+    return;
+  }
+
+  for (let fileEntity of nft.files) {
+    const relativeInput =
+      typeof fileEntity === 'string' ? fileEntity : fileEntity.input;
+    const fullInput = resolve(join(parse(origNftFilename).dir, relativeInput));
+
+    // if the resolved path is NOT in the .output directory we move in it there
+    if (!fullInput.includes(distDir)) {
+      const { ext } = parse(fullInput);
+      const raw = await fs.readFile(fullInput);
+      const newFilePath = join(outputDir, 'inputs', hash(raw) + ext);
+      smartCopy(client, fullInput, newFilePath);
+
+      // We have to use `baseDir` instead of `cwd`, because we want to
+      // mount everything from there (especially `node_modules`).
+      // This is important for NPM Workspaces where `node_modules` is not
+      // in the directory of the workspace.
+      const output = relative(baseDir, fullInput).replace('.output', '.next');
+
+      newFilesList.push({
+        input: relative(parse(nftFileName).dir, newFilePath),
+        output,
+      });
+    } else {
+      newFilesList.push(relativeInput);
+    }
+  }
+  // Update the .nft.json with new input and output mapping
+  await fs.writeJSON(nftFileName, {
+    ...nft,
+    files: newFilesList,
+  });
+}

packages/cli/src/commands/deploy/args.ts

@@ -18,9 +18,10 @@ export const help = () => `
       init                 [example]   Initialize an example project
       ls | list            [app]       Lists deployments
       inspect              [id]        Displays information related to a deployment
-      link                             Link local directory to a Vercel Project
+      link                 [path]      Link local directory to a Vercel Project
       login                [email]     Logs into your account or creates a new one
       logout                           Logs out of your account
+      pull                 [path]      Pull your Project Settings from the cloud
       switch               [scope]     Switches between teams and your personal account
       help                 [cmd]       Displays complete help for [cmd]
 

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

@@ -60,13 +60,10 @@ import { getCommandName } from '../../util/pkg-name';
 import { getPreferredPreviewURL } from '../../util/deploy/get-preferred-preview-url';
 import { Output } from '../../util/output';
 import { help } from './args';
+import { getDeploymentChecks } from '../../util/deploy/get-deployment-checks';
 
 export default async (client: Client) => {
-  const {
-    apiUrl,
-    output,
-    authConfig: { token },
-  } = client;
+  const { output } = client;
 
   let argv = null;
 
@@ -82,6 +79,7 @@ export default async (client: Client) => {
       // This is not an array in favor of matching
       // the config property name.
       '--regions': String,
+      '--prebuilt': Boolean,
       '--prod': Boolean,
       '--confirm': Boolean,
       '-f': '--force',
@@ -120,10 +118,7 @@ export default async (client: Client) => {
     paths = [process.cwd()];
   }
 
-  let localConfig: VercelConfig | null = client.localConfig;
-  if (!localConfig || localConfig instanceof Error) {
-    localConfig = readLocalConfig(paths[0]);
-  }
+  let localConfig = client.localConfig || readLocalConfig(paths[0]);
 
   for (const path of paths) {
     try {
@@ -160,10 +155,8 @@ export default async (client: Client) => {
     }
   }
 
-  const { log, debug, error, warn } = output;
-  const debugEnabled = argv['--debug'];
+  const { log, debug, error, warn, isTTY } = output;
 
-  const { isTTY } = process.stdout;
   const quiet = !isTTY;
 
   // check paths
@@ -439,7 +432,10 @@ export default async (client: Client) => {
   }
 
   const currentTeam = org?.type === 'team' ? org.id : undefined;
-  const now = new Now({ apiUrl, token, debug: debugEnabled, currentTeam });
+  const now = new Now({
+    client,
+    currentTeam,
+  });
   let deployStamp = stamp();
   let deployment = null;
 
@@ -450,6 +446,7 @@ export default async (client: Client) => {
       build: { env: deploymentBuildEnv },
       forceNew: argv['--force'],
       withCache: argv['--with-cache'],
+      prebuilt: argv['--prebuilt'],
       quiet,
       wantsPublic: argv['--public'] || localConfig.public,
       isFile,
@@ -533,6 +530,20 @@ export default async (client: Client) => {
       return 1;
     }
 
+    if (deployment.checksConclusion === 'failed') {
+      const { checks } = await getDeploymentChecks(client, deployment.id);
+      const counters = new Map<string, number>();
+      checks.forEach(c => {
+        counters.set(c.conclusion, (counters.get(c.conclusion) ?? 0) + 1);
+      });
+
+      const counterList = Array.from(counters)
+        .map(([name, no]) => `${no} ${name}`)
+        .join(', ');
+      output.error(`Running Checks: ${counterList}`);
+      return 1;
+    }
+
     const deploymentResponse = await getDeploymentByIdOrHost(
       client,
       contextName,

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

@@ -6,15 +6,13 @@ import { ProjectEnvVariable } from '../../types';
 import Client from '../../util/client';
 import { getLinkedProject } from '../../util/projects/link';
 import { getFrameworks } from '../../util/get-frameworks';
-import { isSettingValue } from '../../util/is-setting-value';
 import { ProjectSettings } from '../../types';
 import getDecryptedEnvRecords from '../../util/get-decrypted-env-records';
 import setupAndLink from '../../util/link/setup-and-link';
 import getSystemEnvValues from '../../util/env/get-system-env-values';
 
 type Options = {
-  '--debug'?: boolean;
-  '--listen'?: string;
+  '--listen': string;
   '--confirm': boolean;
 };
 
@@ -27,7 +25,6 @@ export default async function dev(
   const [dir = '.'] = args;
   let cwd = resolve(dir);
   const listen = parseListen(opts['--listen'] || '3000');
-  const debug = opts['--debug'] || false;
 
   // retrieve dev command
   let [link, frameworks] = await Promise.all([
@@ -73,9 +70,9 @@ export default async function dev(
           frameworkSlug = framework.slug;
         }
 
-        const defaults = framework.settings.devCommand;
-        if (isSettingValue(defaults)) {
-          devCommand = defaults.value;
+        const defaults = framework.settings.devCommand.value;
+        if (defaults) {
+          devCommand = defaults;
         }
       }
     }
@@ -94,7 +91,6 @@ export default async function dev(
 
   const devServer = new DevServer(cwd, {
     output,
-    debug,
     devCommand,
     frameworkSlug,
     projectSettings,

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

@@ -48,6 +48,22 @@ const help = () => {
 };
 
 export default async function main(client: Client) {
+  if (process.env.__VERCEL_DEV_RUNNING) {
+    client.output.error(
+      `${cmd(
+        `${getPkgName()} dev`
+      )} must not recursively invoke itself. Check the Development Command in the Project Settings or the ${cmd(
+        'dev'
+      )} script in ${cmd('package.json')}`
+    );
+    client.output.error(
+      `Learn More: https://vercel.link/recursive-invocation-of-commands`
+    );
+    return 1;
+  } else {
+    process.env.__VERCEL_DEV_RUNNING = '1';
+  }
+
   let argv;
   let args;
   const { output } = client;
@@ -90,22 +106,21 @@ export default async function main(client: Client) {
     if (pkg) {
       const { scripts } = pkg as PackageJson;
 
-      if (scripts && scripts.dev && /\bnow\b\W+\bdev\b/.test(scripts.dev)) {
-        output.error(
-          `The ${cmd('dev')} script in ${cmd(
-            'package.json'
-          )} must not contain ${cmd('now dev')}`
+      if (
+        scripts &&
+        scripts.dev &&
+        /\b(now|vercel)\b\W+\bdev\b/.test(scripts.dev)
+      ) {
+        client.output.error(
+          `${cmd(
+            `${getPkgName()} dev`
+          )} must not recursively invoke itself. Check the Development Command in the Project Settings or the ${cmd(
+            'dev'
+          )} script in ${cmd('package.json')}`
         );
-        output.error(`Learn More: http://err.sh/vercel/now-dev-as-dev-script`);
-        return 1;
-      }
-      if (scripts && scripts.dev && /\bvercel\b\W+\bdev\b/.test(scripts.dev)) {
-        output.error(
-          `The ${cmd('dev')} script in ${cmd(
-            'package.json'
-          )} must not contain ${cmd('vercel dev')}`
+        client.output.error(
+          `Learn More: https://vercel.link/recursive-invocation-of-commands`
         );
-        output.error(`Learn More: http://err.sh/vercel/now-dev-as-dev-script`);
         return 1;
       }
     }
@@ -121,7 +136,7 @@ export default async function main(client: Client) {
   } catch (err) {
     if (err.code === 'ENOTFOUND') {
       // Error message will look like the following:
-      // "request to https://api.vercel.com/www/user failed, reason: getaddrinfo ENOTFOUND api.vercel.com"
+      // "request to https://api.vercel.com/v2/user failed, reason: getaddrinfo ENOTFOUND api.vercel.com"
       const matches = /getaddrinfo ENOTFOUND (.*)$/.exec(err.message || '');
       if (matches && matches[1]) {
         const hostname = matches[1];

packages/cli/src/commands/domains/move.ts

@@ -12,7 +12,7 @@ import param from '../../util/output/param';
 import getDomainAliases from '../../util/alias/get-domain-aliases';
 import getDomainByName from '../../util/domains/get-domain-by-name';
 import promptBool from '../../util/input/prompt-bool';
-import getTeams from '../../util/get-teams';
+import getTeams from '../../util/teams/get-teams';
 import { getCommandName } from '../../util/pkg-name';
 
 type Options = {
@@ -194,8 +194,8 @@ async function findDestinationMatch(
   user: User,
   teams: Team[]
 ) {
-  if (user.uid === destination || user.username === destination) {
-    return user.uid;
+  if (user.id === destination || user.username === destination) {
+    return user.id;
   }
 
   for (const team of teams) {

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

@@ -1,18 +1,16 @@
 import chalk from 'chalk';
-
-import getArgs from '../../util/get-args';
-import getSubcommand from '../../util/get-subcommand';
-import getInvalidSubcommand from '../../util/get-invalid-subcommand';
-import { getEnvTargetPlaceholder } from '../../util/env/env-target';
-import { getLinkedProject } from '../../util/projects/link';
 import Client from '../../util/client';
+import { getEnvTargetPlaceholder } from '../../util/env/env-target';
+import getArgs from '../../util/get-args';
+import getInvalidSubcommand from '../../util/get-invalid-subcommand';
+import getSubcommand from '../../util/get-subcommand';
 import handleError from '../../util/handle-error';
 import logo from '../../util/output/logo';
 import { getCommandName, getPkgName } from '../../util/pkg-name';
-
+import { getLinkedProject } from '../../util/projects/link';
 import add from './add';
-import pull from './pull';
 import ls from './ls';
+import pull from './pull';
 import rm from './rm';
 
 const help = () => {
@@ -139,6 +137,13 @@ export default async function main(client: Client) {
       case 'rm':
         return rm(client, project, argv, args, output);
       case 'pull':
+        output.warn(
+          `${getCommandName(
+            'env pull'
+          )} is deprecated and will be removed in future releases. Run ${getCommandName(
+            'pull'
+          )} instead.`
+        );
         return pull(client, project, argv, args, output);
       default:
         output.error(getInvalidSubcommand(COMMAND_CONFIG));

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

@@ -1,18 +1,18 @@
 import chalk from 'chalk';
+import { closeSync, openSync, promises, readSync } from 'fs';
+import { resolve } from 'path';
 import { Project } from '../../types';
-import { Output } from '../../util/output';
-import confirm from '../../util/input/confirm';
 import Client from '../../util/client';
-import stamp from '../../util/output/stamp';
-import getDecryptedEnvRecords from '../../util/get-decrypted-env-records';
-import param from '../../util/output/param';
-import { join } from 'path';
-import { promises, openSync, closeSync, readSync } from 'fs';
+import exposeSystemEnvs from '../../util/dev/expose-system-envs';
 import { emoji, prependEmoji } from '../../util/emoji';
+import getSystemEnvValues from '../../util/env/get-system-env-values';
+import getDecryptedEnvRecords from '../../util/get-decrypted-env-records';
+import confirm from '../../util/input/confirm';
+import { Output } from '../../util/output';
+import param from '../../util/output/param';
+import stamp from '../../util/output/stamp';
 import { getCommandName } from '../../util/pkg-name';
 const { writeFile } = promises;
-import exposeSystemEnvs from '../../util/dev/expose-system-envs';
-import getSystemEnvValues from '../../util/env/get-system-env-values';
 
 const CONTENTS_PREFIX = '# Created by Vercel CLI\n';
 
@@ -56,8 +56,9 @@ export default async function pull(
     return 1;
   }
 
+  // handle relative or absolute filename
   const [filename = '.env'] = args;
-  const fullPath = join(process.cwd(), filename);
+  const fullPath = resolve(filename);
   const skipConfirmation = opts['--yes'];
 
   const head = tryReadHeadSync(fullPath, Buffer.byteLength(CONTENTS_PREFIX));

packages/cli/src/commands/index.ts

@@ -2,6 +2,7 @@ export default new Map([
   ['alias', 'alias'],
   ['aliases', 'alias'],
   ['billing', 'billing'],
+  ['build', 'build'],
   ['cc', 'billing'],
   ['cert', 'certs'],
   ['certs', 'certs'],
@@ -10,7 +11,6 @@ export default new Map([
   ['dns', 'dns'],
   ['domain', 'domains'],
   ['domains', 'domains'],
-  ['downgrade', 'upgrade'],
   ['env', 'env'],
   ['help', 'help'],
   ['init', 'init'],
@@ -25,6 +25,7 @@ export default new Map([
   ['ls', 'list'],
   ['project', 'projects'],
   ['projects', 'projects'],
+  ['pull', 'pull'],
   ['remove', 'remove'],
   ['rm', 'remove'],
   ['secret', 'secrets'],

packages/cli/src/commands/inspect.ts

@@ -117,9 +117,7 @@ export default async function main(client: Client) {
 
   const { builds } =
     deployment.version === 2
-      ? await client.fetch<{ builds: Build[] }>(
-          `/v1/now/deployments/${id}/builds`
-        )
+      ? await client.fetch<{ builds: Build[] }>(`/v1/deployments/${id}/builds`)
       : { builds: [] };
 
   log(

packages/cli/src/commands/list.ts

@@ -77,14 +77,8 @@ export default async function main(client: Client) {
     return 1;
   }
 
-  const {
-    authConfig: { token },
-    output,
-    apiUrl,
-    config,
-  } = client;
+  const { output, config } = client;
 
-  const debugEnabled = argv['--debug'];
   const { print, log, error, note, debug, spinner } = output;
 
   if (argv._.length > 2) {
@@ -92,8 +86,8 @@ export default async function main(client: Client) {
     return 1;
   }
 
-  let app: string | null = argv._[1];
-  let host: string | null = null;
+  let app: string | undefined = argv._[1];
+  let host: string | undefined = undefined;
 
   if (argv['--help']) {
     help();
@@ -126,10 +120,7 @@ export default async function main(client: Client) {
   spinner(`Fetching deployments in ${chalk.bold(contextName)}`);
 
   const now = new Now({
-    apiUrl,
-    token,
-    debug: debugEnabled,
-    output,
+    client,
     currentTeam,
   });
   const start = Date.now();
@@ -156,7 +147,7 @@ export default async function main(client: Client) {
       return 1;
     }
 
-    app = null;
+    app = undefined;
     host = asHost;
   }
 

packages/cli/src/commands/login.ts

@@ -2,7 +2,6 @@ import { validate as validateEmail } from 'email-validator';
 import chalk from 'chalk';
 import hp from '../util/humanize-path';
 import getArgs from '../util/get-args';
-import handleError from '../util/handle-error';
 import logo from '../util/output/logo';
 import prompt from '../util/login/prompt';
 import doSamlLogin from '../util/login/saml';
@@ -52,20 +51,14 @@ const help = () => {
 };
 
 export default async function login(client: Client): Promise<number> {
-  let argv;
   const { output } = client;
 
-  try {
-    argv = getArgs(client.argv.slice(2), {
-      '--oob': Boolean,
-      '--github': Boolean,
-      '--gitlab': Boolean,
-      '--bitbucket': Boolean,
-    });
-  } catch (err) {
-    handleError(err);
-    return 1;
-  }
+  const argv = getArgs(client.argv.slice(2), {
+    '--oob': Boolean,
+    '--github': Boolean,
+    '--gitlab': Boolean,
+    '--bitbucket': Boolean,
+  });
 
   if (argv['--help']) {
     help();
@@ -115,8 +108,7 @@ export default async function login(client: Client): Promise<number> {
     }
   }
 
-  // When `result` is a string it's the user's authentication token.
-  // It needs to be saved to the configuration file.
+  // Save the user's authentication token to the configuration file.
   client.authConfig.token = result.token;
 
   writeToAuthConfigFile(client.authConfig);
@@ -124,9 +116,9 @@ export default async function login(client: Client): Promise<number> {
 
   output.debug(`Saved credentials in "${hp(getGlobalPathConfig())}"`);
 
-  console.log(
+  output.print(
     `${chalk.cyan('Congratulations!')} ` +
-      `You are now logged in. In order to deploy something, run ${getCommandName()}.`
+      `You are now logged in. In order to deploy something, run ${getCommandName()}.\n`
   );
 
   output.print(

packages/cli/src/commands/pull.ts

@@ -0,0 +1,116 @@
+import chalk from 'chalk';
+import { join } from 'path';
+import Client from '../util/client';
+import { emoji, prependEmoji } from '../util/emoji';
+import getArgs from '../util/get-args';
+import handleError from '../util/handle-error';
+import setupAndLink from '../util/link/setup-and-link';
+import logo from '../util/output/logo';
+import stamp from '../util/output/stamp';
+import { getPkgName } from '../util/pkg-name';
+import {
+  getLinkedProject,
+  VERCEL_DIR,
+  VERCEL_DIR_PROJECT,
+} from '../util/projects/link';
+import { writeProjectSettings } from '../util/projects/project-settings';
+import pull from './env/pull';
+
+const help = () => {
+  return console.log(`
+  ${chalk.bold(`${logo} ${getPkgName()} pull`)} [path]
+
+ ${chalk.dim('Options:')}
+
+    -h, --help                     Output usage information
+    -A ${chalk.bold.underline('FILE')}, --local-config=${chalk.bold.underline(
+    'FILE'
+  )}   Path to the local ${'`vercel.json`'} file
+    -Q ${chalk.bold.underline('DIR')}, --global-config=${chalk.bold.underline(
+    'DIR'
+  )}    Path to the global ${'`.vercel`'} directory
+    -d, --debug                    Debug mode [off]
+    --env [filename]               The file to write Development Environment Variables to [.env]
+    -y, --yes                      Skip the confirmation prompt
+
+  ${chalk.dim('Examples:')}
+
+  ${chalk.gray('–')} Pull the latest Project Settings from the cloud
+
+    ${chalk.cyan(`$ ${getPkgName()} pull`)}
+    ${chalk.cyan(`$ ${getPkgName()} pull ./path-to-project`)}
+    ${chalk.cyan(`$ ${getPkgName()} pull --env .env.local`)}
+    ${chalk.cyan(`$ ${getPkgName()} pull ./path-to-project --env .env.local`)}
+`);
+};
+export default async function main(client: Client) {
+  let argv;
+  try {
+    argv = getArgs(client.argv.slice(2), {
+      '--yes': Boolean,
+      '--env': String,
+      '--debug': Boolean,
+      '-d': '--debug',
+      '-y': '--yes',
+    });
+  } catch (err) {
+    handleError(err);
+    return 1;
+  }
+
+  if (argv['--help']) {
+    help();
+    return 2;
+  }
+
+  const cwd = argv._[1] || process.cwd();
+  const yes = argv['--yes'];
+  const env = argv['--env'] ?? '.env';
+  const settingsStamp = stamp();
+  let link = await getLinkedProject(client, cwd);
+  if (link.status === 'not_linked') {
+    link = await setupAndLink(client, cwd, {
+      autoConfirm: yes,
+      successEmoji: 'link',
+      setupMsg: 'Set up',
+    });
+
+    if (link.status === 'not_linked') {
+      // User aborted project linking questions
+      return 0;
+    }
+  }
+
+  if (link.status === 'error') {
+    return link.exitCode;
+  }
+
+  const { project, org } = link;
+
+  client.config.currentTeam = org.type === 'team' ? org.id : undefined;
+
+  const result = await pull(
+    client,
+    project,
+    argv,
+    [join(cwd, env)],
+    client.output
+  );
+  if (result !== 0) {
+    // an error happened
+    return result;
+  }
+
+  await writeProjectSettings(cwd, project, org);
+
+  client.output.print(
+    `${prependEmoji(
+      `Downloaded project settings to ${chalk.bold(
+        join(VERCEL_DIR, VERCEL_DIR_PROJECT)
+      )} ${chalk.gray(settingsStamp())}`,
+      emoji('success')
+    )}\n`
+  );
+
+  return 0;
+}

packages/cli/src/commands/remove.ts

@@ -85,8 +85,6 @@ export default async function main(client: Client) {
   argv._ = argv._.slice(1);
 
   const {
-    apiUrl,
-    authConfig: { token },
     output,
     config: { currentTeam },
   } = client;
@@ -245,11 +243,8 @@ export default async function main(client: Client) {
   }
 
   const now = new Now({
-    apiUrl,
-    token,
-    debug: argv['--debug'],
+    client,
     currentTeam,
-    output,
   });
   const start = Date.now();
 

packages/cli/src/commands/secrets.js

@@ -72,8 +72,6 @@ const help = () => {
 
 // Options
 let argv;
-let debug;
-let apiUrl;
 let subcommand;
 let nextTimestamp;
 
@@ -90,8 +88,6 @@ const main = async client => {
 
   argv._ = argv._.slice(1);
 
-  debug = argv.debug;
-  apiUrl = client.apiUrl;
   subcommand = argv._[0];
   nextTimestamp = argv.next;
 
@@ -101,7 +97,6 @@ const main = async client => {
   }
 
   const {
-    authConfig: { token },
     output,
     config: { currentTeam },
   } = client;
@@ -118,7 +113,7 @@ const main = async client => {
     throw err;
   }
 
-  return run({ output, token, contextName, currentTeam, client });
+  return run({ output, contextName, currentTeam, client });
 };
 
 export default async client => {
@@ -130,8 +125,8 @@ export default async client => {
   }
 };
 
-async function run({ output, token, contextName, currentTeam, client }) {
-  const secrets = new NowSecrets({ apiUrl, token, debug, currentTeam, output });
+async function run({ output, contextName, currentTeam, client }) {
+  const secrets = new NowSecrets({ client, currentTeam });
   const args = argv._.slice(1);
   const start = Date.now();
   const { 'test-warning': testWarningFlag } = argv;

packages/cli/src/commands/teams/add.ts

@@ -1,5 +1,5 @@
 import chalk from 'chalk';
-import stamp from '../../util/output/stamp.ts';
+import stamp from '../../util/output/stamp';
 import info from '../../util/output/info';
 import eraseLines from '../../util/output/erase-lines';
 import chars from '../../util/output/chars';
@@ -7,14 +7,17 @@ import note from '../../util/output/note';
 import textInput from '../../util/input/text';
 import invite from './invite';
 import { writeToConfigFile } from '../../util/config/files';
-import { getPkgName, getCommandName } from '../../util/pkg-name.ts';
+import { getPkgName, getCommandName } from '../../util/pkg-name';
+import Client from '../../util/client';
+import createTeam from '../../util/teams/create-team';
+import patchTeam from '../../util/teams/patch-team';
 
-const validateSlugKeypress = (data, value) =>
+const validateSlugKeypress = (data: string, value: string) =>
   // TODO: the `value` here should contain the current value + the keypress
   // should be fixed on utils/input/text.js
   /^[a-zA-Z]+[a-zA-Z0-9_-]*$/.test(value + data);
 
-const validateNameKeypress = (data, value) =>
+const validateNameKeypress = (data: string, value: string) =>
   // TODO: the `value` here should contain the current value + the keypress
   // should be fixed on utils/input/text.js
   /^[ a-zA-Z0-9_-]+$/.test(value + data);
@@ -32,14 +35,14 @@ const gracefulExit = () => {
 const teamUrlPrefix = 'Team URL'.padEnd(14) + chalk.gray('vercel.com/');
 const teamNamePrefix = 'Team Name'.padEnd(14);
 
-export default async function add(client, teams) {
+export default async function add(client: Client): Promise<number> {
   let slug;
   let team;
   let elapsed;
   const { output } = client;
 
   output.log(
-    `Pick a team identifier for its url (e.g.: ${chalk.cyan(
+    `Pick a team identifier for its URL (e.g.: ${chalk.cyan(
       '`vercel.com/acme`'
     )})`
   );
@@ -65,14 +68,12 @@ export default async function add(client, teams) {
     elapsed = stamp();
     output.spinner(teamUrlPrefix + slug);
 
-    let res;
     try {
       // eslint-disable-next-line no-await-in-loop
-      res = await teams.create({ slug });
-      team = res;
+      team = await createTeam(client, { slug });
     } catch (err) {
       output.stopSpinner();
-      process.stdout.write(eraseLines(2));
+      output.print(eraseLines(2));
       output.error(err.message);
     }
   } while (!team);
@@ -103,11 +104,12 @@ export default async function add(client, teams) {
   elapsed = stamp();
   output.spinner(teamNamePrefix + name);
 
-  const res = await teams.edit({ id: team.id, name });
+  const res = await patchTeam(client, team.id, { name });
 
   output.stopSpinner();
   process.stdout.write(eraseLines(2));
 
+  /*
   if (res.error) {
     output.error(res.error.message);
     output.log(`${chalk.red(`✖ ${teamNamePrefix}`)}${name}`);
@@ -116,33 +118,25 @@ export default async function add(client, teams) {
     // TODO: maybe we want to ask the user to retry? not sure if
     // there's a scenario where that would be wanted
   }
+  */
 
   team = Object.assign(team, res);
 
   output.success(`Team name saved ${elapsed()}`);
   output.log(`${chalk.cyan(`${chars.tick} `) + teamNamePrefix + team.name}\n`);
 
-  output.spinner('Saving');
-
   // Update config file
-  const configCopy = Object.assign({}, client.config);
-
-  if (configCopy.sh) {
-    configCopy.sh.currentTeam = team;
-  } else {
-    configCopy.currentTeam = team.id;
-  }
-
-  writeToConfigFile(configCopy);
-
+  output.spinner('Saving');
+  client.config.currentTeam = team.id;
+  writeToConfigFile(client.config);
   output.stopSpinner();
 
-  await invite(client, { _: [] }, teams, {
+  await invite(client, [], {
     introMsg: 'Invite your teammates! When done, press enter on an empty field',
     noopMsg: `You can invite teammates later by running ${getCommandName(
       `teams invite`
     )}`,
   });
 
-  gracefulExit();
+  return gracefulExit();
 }

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

@@ -1,6 +1,5 @@
 import chalk from 'chalk';
 import error from '../../util/output/error';
-import NowTeams from '../../util/teams';
 import logo from '../../util/output/logo';
 import list from './list';
 import add from './add';
@@ -8,7 +7,6 @@ import change from './switch';
 import invite from './invite';
 import { getPkgName } from '../../util/pkg-name';
 import getArgs from '../../util/get-args';
-import handleError from '../../util/handle-error';
 import Client from '../../util/client';
 
 const help = () => {
@@ -61,28 +59,11 @@ const help = () => {
   `);
 };
 
-let argv;
-let debug;
-let apiUrl;
-let subcommand;
-
 export default async (client: Client) => {
-  try {
-    argv = getArgs(client.argv.slice(2), {
-      '--since': String,
-      '--until': String,
-      '--next': Number,
-      '-N': '--next',
-    });
-  } catch (error) {
-    handleError(error);
-    return 1;
-  }
+  let subcommand;
 
-  debug = argv['--debug'];
-  apiUrl = client.apiUrl;
-
-  const isSwitch = argv._[0] && argv._[0] === 'switch';
+  const argv = getArgs(client.argv.slice(2), undefined, { permissive: true });
+  const isSwitch = argv._[0] === 'switch';
 
   argv._ = argv._.slice(1);
 
@@ -97,19 +78,11 @@ export default async (client: Client) => {
     return 2;
   }
 
-  const {
-    authConfig: { token },
-    config,
-  } = client;
-
-  const { currentTeam } = config;
-  const teams = new NowTeams({ apiUrl, token, debug, currentTeam });
-
-  let exitCode;
+  let exitCode = 0;
   switch (subcommand) {
     case 'list':
     case 'ls': {
-      exitCode = await list(client, argv, teams);
+      exitCode = await list(client);
       break;
     }
     case 'switch':
@@ -119,12 +92,12 @@ export default async (client: Client) => {
     }
     case 'add':
     case 'create': {
-      exitCode = await add(client, teams);
+      exitCode = await add(client);
       break;
     }
 
     case 'invite': {
-      exitCode = await invite(client, argv, teams);
+      exitCode = await invite(client, argv._);
       break;
     }
     default: {
@@ -137,6 +110,5 @@ export default async (client: Client) => {
       help();
     }
   }
-  teams.close();
-  return exitCode || 0;
+  return exitCode;
 };

packages/cli/src/commands/teams/invite.ts

@@ -1,15 +1,19 @@
 import chalk from 'chalk';
-import { email as regexEmail } from '../../util/input/regexes';
-import cmd from '../../util/output/cmd.ts';
-import stamp from '../../util/output/stamp.ts';
-import param from '../../util/output/param.ts';
+import Client from '../../util/client';
+import cmd from '../../util/output/cmd';
+import stamp from '../../util/output/stamp';
+import param from '../../util/output/param';
 import chars from '../../util/output/chars';
 import textInput from '../../util/input/text';
 import eraseLines from '../../util/output/erase-lines';
-import getUser from '../../util/get-user.ts';
-import { getCommandName } from '../../util/pkg-name.ts';
+import getUser from '../../util/get-user';
+import { getCommandName } from '../../util/pkg-name';
+import { email as regexEmail } from '../../util/input/regexes';
+import getTeams from '../../util/teams/get-teams';
+import inviteUserToTeam from '../../util/teams/invite-user-to-team';
 
-const validateEmail = data => regexEmail.test(data.trim()) || data.length === 0;
+const validateEmail = (data: string) =>
+  regexEmail.test(data.trim()) || data.length === 0;
 
 const domains = Array.from(
   new Set([
@@ -28,12 +32,12 @@ const domains = Array.from(
   ])
 );
 
-const emailAutoComplete = (value, teamSlug) => {
+const emailAutoComplete = (value: string, teamSlug: string) => {
   const parts = value.split('@');
 
   if (parts.length === 2 && parts[1].length > 0) {
     const [, host] = parts;
-    let suggestion = false;
+    let suggestion: string | false = false;
 
     domains.unshift(teamSlug);
     for (const domain of domains) {
@@ -51,17 +55,16 @@ const emailAutoComplete = (value, teamSlug) => {
 };
 
 export default async function invite(
-  client,
-  argv,
-  teams,
-  { introMsg, noopMsg = 'No changes made' } = {}
-) {
+  client: Client,
+  emails: string[] = [],
+  { introMsg = '', noopMsg = 'No changes made' } = {}
+): Promise<number> {
   const { config, output } = client;
   const { currentTeam: currentTeamId } = config;
 
   output.spinner('Fetching teams');
-  const list = (await teams.ls()).teams;
-  const currentTeam = list.find(team => team.id === currentTeamId);
+  const teams = await getTeams(client);
+  const currentTeam = teams.find(team => team.id === currentTeamId);
 
   output.spinner('Fetching user information');
   let user;
@@ -93,8 +96,8 @@ export default async function invite(
     introMsg || `Inviting team members to ${chalk.bold(currentTeam.name)}`
   );
 
-  if (argv._.length > 0) {
-    for (const email of argv._) {
+  if (emails.length > 0) {
+    for (const email of emails) {
       if (regexEmail.test(email)) {
         output.spinner(email);
         const elapsed = stamp();
@@ -102,8 +105,8 @@ export default async function invite(
 
         try {
           // eslint-disable-next-line no-await-in-loop
-          const res = await teams.inviteUser({ teamId: currentTeam.id, email });
-          userInfo = res.name || res.username;
+          const res = await inviteUserToTeam(client, currentTeam.id, email);
+          userInfo = res.username;
         } catch (err) {
           if (err.code === 'user_not_found') {
             output.error(`No user exists with the email address "${email}".`);
@@ -122,12 +125,11 @@ export default async function invite(
         output.log(`${chalk.red(`✖ ${email}`)} ${chalk.gray('[invalid]')}`);
       }
     }
-    return;
+    return 0;
   }
 
   const inviteUserPrefix = 'Invite User'.padEnd(14);
   const sentEmailPrefix = 'Sent Email'.padEnd(14);
-  const emails = [];
   let hasError = false;
   let email;
   do {
@@ -150,12 +152,12 @@ export default async function invite(
       output.spinner(inviteUserPrefix + email);
       try {
         // eslint-disable-next-line no-await-in-loop
-        const { name, username } = await teams.inviteUser({
-          teamId: currentTeam.id,
-          email,
-        });
-        const userInfo = name || username;
-        email = `${email}${userInfo ? ` (${userInfo})` : ''} ${elapsed()}`;
+        const { username } = await inviteUserToTeam(
+          client,
+          currentTeam.id,
+          email
+        );
+        email = `${email}${username ? ` (${username})` : ''} ${elapsed()}`;
         emails.push(email);
         output.log(`${chalk.cyan(chars.tick)} ${sentEmailPrefix}${email}`);
         if (hasError) {
@@ -193,4 +195,6 @@ export default async function invite(
       output.log(`${chalk.cyan(chars.tick)} ${inviteUserPrefix}${email}`);
     }
   }
+
+  return 0;
 }

packages/cli/src/commands/teams/list.ts

@@ -1,22 +1,41 @@
 import chars from '../../util/output/chars';
 import table from '../../util/output/table';
-import getUser from '../../util/get-user.ts';
+import getUser from '../../util/get-user';
+import getTeams from '../../util/teams/get-teams';
 import getPrefixedFlags from '../../util/get-prefixed-flags';
-import { getPkgName } from '../../util/pkg-name.ts';
+import { getPkgName } from '../../util/pkg-name';
 import getCommandFlags from '../../util/get-command-flags';
-import cmd from '../../util/output/cmd.ts';
+import cmd from '../../util/output/cmd';
+import Client from '../../util/client';
+import getArgs from '../../util/get-args';
 
-export default async function list(client, argv, teams) {
+export default async function list(client: Client): Promise<number> {
   const { config, output } = client;
-  const { next } = argv;
+
+  const argv = getArgs(client.argv.slice(2), {
+    '--since': String,
+    '--until': String,
+    '--count': Number,
+    '--next': Number,
+    '-C': '--count',
+    '-N': '--next',
+  });
+
+  const next = argv['--next'];
+  const count = argv['--count'];
 
   if (typeof next !== 'undefined' && !Number.isInteger(next)) {
-    output.error('Please provide a number for flag --next');
+    output.error('Please provide a number for flag `--next`');
+    return 1;
+  }
+
+  if (typeof count !== 'undefined' && !Number.isInteger(next)) {
+    output.error('Please provide a number for flag `--count`');
     return 1;
   }
 
   output.spinner('Fetching teams');
-  const { teams: list, pagination } = await teams.ls({
+  const { teams, pagination } = await getTeams(client, {
     next,
     apiVersion: 2,
   });
@@ -37,40 +56,31 @@ export default async function list(client, argv, teams) {
   }
 
   if (accountIsCurrent) {
-    currentTeam = {
-      slug: user.username || user.email,
-    };
+    currentTeam = user.id;
   }
 
-  const teamList = list.map(({ slug, name }) => ({
+  const teamList = teams.map(({ id, slug, name }) => ({
+    id,
     name,
     value: slug,
-    current: slug === currentTeam.slug ? chars.tick : '',
+    current: id === currentTeam ? chars.tick : '',
   }));
 
   teamList.unshift({
+    id: user.id,
     name: user.email,
     value: user.username || user.email,
-    current: (accountIsCurrent && chars.tick) || '',
+    current: accountIsCurrent ? chars.tick : '',
   });
 
-  // Let's bring the current team to the beginning of the list
+  // Bring the current Team to the beginning of the list
   if (!accountIsCurrent) {
-    const index = teamList.findIndex(
-      choice => choice.value === currentTeam.slug
-    );
+    const index = teamList.findIndex(choice => choice.id === currentTeam);
     const choice = teamList.splice(index, 1)[0];
     teamList.unshift(choice);
   }
 
   // Printing
-  const count = teamList.length;
-  if (!count) {
-    // Maybe should not happen
-    output.error(`No teams found`);
-    return 1;
-  }
-
   output.stopSpinner();
   console.log(); // empty line
 
@@ -80,7 +90,7 @@ export default async function list(client, argv, teams) {
     [1, 5]
   );
 
-  if (pagination && pagination.count === 20) {
+  if (pagination?.count === 20) {
     const prefixedArgs = getPrefixedFlags(argv);
     const flags = getCommandFlags(prefixedArgs, ['_', '--next', '-N', '-d']);
     const nextCmd = `${getPkgName()} teams ls${flags} --next ${
@@ -89,4 +99,6 @@ export default async function list(client, argv, teams) {
     console.log(); // empty line
     output.log(`To display the next page run ${cmd(nextCmd)}`);
   }
+
+  return 0;
 }

packages/cli/src/commands/teams/switch.ts

@@ -5,7 +5,7 @@ import chalk from 'chalk';
 import Client from '../../util/client';
 import { emoji } from '../../util/emoji';
 import getUser from '../../util/get-user';
-import getTeams from '../../util/get-teams';
+import getTeams from '../../util/teams/get-teams';
 import listInput from '../../util/input/list';
 import { Team, GlobalConfig } from '../../types';
 import { writeToConfigFile } from '../../util/config/files';