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

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",

packages/build-utils/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/build-utils",
-  "version": "2.12.3-canary.26",
+  "version": "2.12.3-canary.32",
   "license": "MIT",
   "main": "./dist/index.js",
   "types": "./dist/index.d.js",

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

@@ -1,78 +1,190 @@
 import fs from 'fs-extra';
-import { join, dirname, relative } from 'path';
+import { join, dirname, parse, relative } from 'path';
 import glob from './fs/glob';
 import { normalizePath } from './fs/normalize-path';
-import { FILES_SYMBOL, getLambdaOptionsFromFunction, Lambda } from './lambda';
+import { FILES_SYMBOL, Lambda } from './lambda';
 import type FileBlob from './file-blob';
-import type { BuilderFunctions, BuildOptions, Files } from './types';
-import minimatch from 'minimatch';
+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({
-    vercelConfig,
-    workPath,
-  }: {
-    vercelConfig: {
-      functions?: BuilderFunctions;
-      regions?: string[];
-    };
-    workPath: string;
-  }) {
-    const opts = { cwd: workPath };
-    const files = await glob('**', opts);
-    delete files['vercel.json']; // Builders/Runtimes didn't have vercel.json
-    const entrypoints = await glob(`api/**/*${ext}`, opts);
+  return async function build({ workPath }: { workPath: string }) {
+    // We also don't want to provide any files to Runtimes that were ignored
+    // through `.vercelignore` or `.nowignore`, because the Build Step does the same.
+    const ignoreFilter = await getIgnoreFilter(workPath);
+
+    // Retrieve the files that are currently available on the File System,
+    // before the Legacy Runtime has even started to build.
+    const sourceFilesPreBuild = await getSourceFiles(workPath, ignoreFilter);
+
+    // Instead of doing another `glob` to get all the matching source files,
+    // we'll filter the list of existing files down to only the ones
+    // that are matching the entrypoint pattern, so we're first creating
+    // a clean new list to begin.
+    const entrypoints = Object.assign({}, sourceFilesPreBuild);
+
+    const entrypointMatch = new RegExp(`^api/.*${ext}$`);
+
+    // Up next, we'll strip out the files from the list of entrypoints
+    // that aren't actually considered entrypoints.
+    for (const file in entrypoints) {
+      if (!entrypointMatch.test(file)) {
+        delete entrypoints[file];
+      }
+    }
+
     const pages: { [key: string]: any } = {};
-    const { functions = {} } = vercelConfig;
-    const traceDir = join(workPath, '.output', 'runtime-traced-files');
+    const pluginName = packageName.replace('vercel-plugin-', '');
+
+    const traceDir = join(
+      workPath,
+      `.output`,
+      `inputs`,
+      // Legacy Runtimes can only provide API Routes, so that's
+      // why we can use this prefix for all of them. Here, we have to
+      // make sure to not use a cryptic hash name, because people
+      // need to be able to easily inspect the output.
+      `api-routes-${pluginName}`
+    );
+
     await fs.ensureDir(traceDir);
 
     for (const entrypoint of Object.keys(entrypoints)) {
-      const key =
-        Object.keys(functions).find(
-          src => src === entrypoint || minimatch(entrypoint, src)
-        ) || '';
-      const config = functions[key] || {};
-
       const { output } = await buildRuntime({
-        files,
+        files: sourceFilesPreBuild,
         entrypoint,
         workPath,
         config: {
           zeroConfig: true,
-          includeFiles: config.includeFiles,
-          excludeFiles: config.excludeFiles,
         },
         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: output.handler,
+        handler: handler,
         runtime: output.runtime,
         memory: output.memory,
         maxDuration: output.maxDuration,
         environment: output.environment,
         allowQuery: output.allowQuery,
-        //regions: output.regions,
       };
 
       // @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(files[entrypoint].fsPath, 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;
@@ -81,7 +193,14 @@ export function convertRuntimeToPlugin(
 
       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') {
@@ -99,11 +218,12 @@ export function convertRuntimeToPlugin(
         'pages',
         `${entrypoint}.nft.json`
       );
+
       const json = JSON.stringify({
         version: 1,
-        files: tracedFiles.map(f => ({
-          input: normalizePath(relative(nft, f.absolutePath)),
-          output: normalizePath(f.relativePath),
+        files: tracedFiles.map(file => ({
+          input: normalizePath(relative(dirname(nft), file.absolutePath)),
+          output: normalizePath(file.relativePath),
         })),
       });
 
@@ -111,7 +231,7 @@ export function convertRuntimeToPlugin(
       await fs.writeFile(nft, json);
     }
 
-    await updateFunctionsManifest({ vercelConfig, workPath, pages });
+    await updateFunctionsManifest({ workPath, pages });
   };
 }
 
@@ -139,15 +259,12 @@ async function readJson(filePath: string): Promise<{ [key: string]: any }> {
 
 /**
  * If `.output/functions-manifest.json` exists, append to the pages
- * property. Otherwise write a new file. This will also read `vercel.json`
- * and apply relevant `functions` property config.
+ * property. Otherwise write a new file.
  */
 export async function updateFunctionsManifest({
-  vercelConfig,
   workPath,
   pages,
 }: {
-  vercelConfig: { functions?: BuilderFunctions; regions?: string[] };
   workPath: string;
   pages: { [key: string]: any };
 }) {
@@ -162,16 +279,7 @@ export async function updateFunctionsManifest({
   if (!functionsManifest.pages) functionsManifest.pages = {};
 
   for (const [pageKey, pageConfig] of Object.entries(pages)) {
-    const fnConfig = await getLambdaOptionsFromFunction({
-      sourceFile: pageKey,
-      config: vercelConfig,
-    });
-    functionsManifest.pages[pageKey] = {
-      ...pageConfig,
-      memory: fnConfig.memory || pageConfig.memory,
-      maxDuration: fnConfig.maxDuration || pageConfig.maxDuration,
-      regions: vercelConfig.regions || pageConfig.regions,
-    };
+    functionsManifest.pages[pageKey] = { ...pageConfig };
   }
 
   await fs.writeFile(functionsManifestPath, JSON.stringify(functionsManifest));

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 {
@@ -132,3 +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/test/unit.convert-runtime-to-plugin.test.ts

@@ -1,6 +1,6 @@
 import { join } from 'path';
 import fs from 'fs-extra';
-import { BuildOptions, createLambda } from '../src';
+import { BuildOptions, createLambda, FileFsRef } from '../src';
 import { convertRuntimeToPlugin } from '../src/convert-runtime-to-plugin';
 
 async function fsToJson(dir: string, output: Record<string, any> = {}) {
@@ -32,9 +32,13 @@ describe('convert-runtime-to-plugin', () => {
   });
 
   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: 'index.handler',
+      handler: `${handlerName}.vc_handler`,
       runtime: 'python3.9',
       memory: 512,
       maxDuration: 5,
@@ -42,6 +46,15 @@ describe('convert-runtime-to-plugin', () => {
     };
 
     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,
@@ -50,25 +63,30 @@ describe('convert-runtime-to-plugin', () => {
     };
 
     const lambdaFiles = await fsToJson(workPath);
-    const vercelConfig = JSON.parse(lambdaFiles['vercel.json']);
-    delete lambdaFiles['vercel.json'];
-    const build = await convertRuntimeToPlugin(buildRuntime, '.py');
+    const packageName = 'vercel-plugin-python';
+    const build = await convertRuntimeToPlugin(buildRuntime, packageName, ext);
 
-    await build({ vercelConfig, workPath });
+    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('{'),
-      'runtime-traced-files': lambdaFiles,
+      inputs: {
+        'api-routes-python': lambdaFiles,
+      },
       server: {
         pages: {
           api: {
-            'index.py': expect.stringContaining('index'),
+            'index.py': expect.stringContaining('handler'),
             'index.py.nft.json': expect.stringContaining('{'),
             users: {
-              'get.py': expect.stringContaining('get'),
+              'get.py': expect.stringContaining('handler'),
               'get.py.nft.json': expect.stringContaining('{'),
-              'post.py': expect.stringContaining('post'),
+              'post.py': expect.stringContaining('handler'),
               'post.py.nft.json': expect.stringContaining('{'),
             },
           },
@@ -82,7 +100,7 @@ describe('convert-runtime-to-plugin', () => {
       pages: {
         'api/index.py': lambdaOptions,
         'api/users/get.py': lambdaOptions,
-        'api/users/post.py': { ...lambdaOptions, memory: 3008 },
+        'api/users/post.py': { ...lambdaOptions, memory: 512 },
       },
     });
 
@@ -91,36 +109,35 @@ describe('convert-runtime-to-plugin', () => {
       version: 1,
       files: [
         {
-          input: '../../../../runtime-traced-files/api/db/[id].py',
+          input: `../../../inputs/api-routes-python/api/db/[id].py`,
           output: 'api/db/[id].py',
         },
         {
-          input: '../../../../runtime-traced-files/api/index.py',
+          input: `../../../inputs/api-routes-python/api/index.py`,
           output: 'api/index.py',
         },
         {
-          input:
-            '../../../../runtime-traced-files/api/project/[aid]/[bid]/index.py',
+          input: `../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
           output: 'api/project/[aid]/[bid]/index.py',
         },
         {
-          input: '../../../../runtime-traced-files/api/users/get.py',
+          input: `../../../inputs/api-routes-python/api/users/get.py`,
           output: 'api/users/get.py',
         },
         {
-          input: '../../../../runtime-traced-files/api/users/post.py',
+          input: `../../../inputs/api-routes-python/api/users/post.py`,
           output: 'api/users/post.py',
         },
         {
-          input: '../../../../runtime-traced-files/file.txt',
+          input: `../../../inputs/api-routes-python/file.txt`,
           output: 'file.txt',
         },
         {
-          input: '../../../../runtime-traced-files/util/date.py',
+          input: `../../../inputs/api-routes-python/util/date.py`,
           output: 'util/date.py',
         },
         {
-          input: '../../../../runtime-traced-files/util/math.py',
+          input: `../../../inputs/api-routes-python/util/math.py`,
           output: 'util/math.py',
         },
       ],
@@ -133,36 +150,35 @@ describe('convert-runtime-to-plugin', () => {
       version: 1,
       files: [
         {
-          input: '../../../../../runtime-traced-files/api/db/[id].py',
+          input: `../../../../inputs/api-routes-python/api/db/[id].py`,
           output: 'api/db/[id].py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/index.py',
+          input: `../../../../inputs/api-routes-python/api/index.py`,
           output: 'api/index.py',
         },
         {
-          input:
-            '../../../../../runtime-traced-files/api/project/[aid]/[bid]/index.py',
+          input: `../../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
           output: 'api/project/[aid]/[bid]/index.py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/users/get.py',
+          input: `../../../../inputs/api-routes-python/api/users/get.py`,
           output: 'api/users/get.py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/users/post.py',
+          input: `../../../../inputs/api-routes-python/api/users/post.py`,
           output: 'api/users/post.py',
         },
         {
-          input: '../../../../../runtime-traced-files/file.txt',
+          input: `../../../../inputs/api-routes-python/file.txt`,
           output: 'file.txt',
         },
         {
-          input: '../../../../../runtime-traced-files/util/date.py',
+          input: `../../../../inputs/api-routes-python/util/date.py`,
           output: 'util/date.py',
         },
         {
-          input: '../../../../../runtime-traced-files/util/math.py',
+          input: `../../../../inputs/api-routes-python/util/math.py`,
           output: 'util/math.py',
         },
       ],
@@ -175,36 +191,35 @@ describe('convert-runtime-to-plugin', () => {
       version: 1,
       files: [
         {
-          input: '../../../../../runtime-traced-files/api/db/[id].py',
+          input: `../../../../inputs/api-routes-python/api/db/[id].py`,
           output: 'api/db/[id].py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/index.py',
+          input: `../../../../inputs/api-routes-python/api/index.py`,
           output: 'api/index.py',
         },
         {
-          input:
-            '../../../../../runtime-traced-files/api/project/[aid]/[bid]/index.py',
+          input: `../../../../inputs/api-routes-python/api/project/[aid]/[bid]/index.py`,
           output: 'api/project/[aid]/[bid]/index.py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/users/get.py',
+          input: `../../../../inputs/api-routes-python/api/users/get.py`,
           output: 'api/users/get.py',
         },
         {
-          input: '../../../../../runtime-traced-files/api/users/post.py',
+          input: `../../../../inputs/api-routes-python/api/users/post.py`,
           output: 'api/users/post.py',
         },
         {
-          input: '../../../../../runtime-traced-files/file.txt',
+          input: `../../../../inputs/api-routes-python/file.txt`,
           output: 'file.txt',
         },
         {
-          input: '../../../../../runtime-traced-files/util/date.py',
+          input: `../../../../inputs/api-routes-python/util/date.py`,
           output: 'util/date.py',
         },
         {
-          input: '../../../../../runtime-traced-files/util/math.py',
+          input: `../../../../inputs/api-routes-python/util/math.py`,
           output: 'util/math.py',
         },
       ],

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel",
-  "version": "23.1.3-canary.44",
+  "version": "23.1.3-canary.53",
   "preferGlobal": true,
   "license": "Apache-2.0",
   "description": "The command-line interface for Vercel",
@@ -43,14 +43,14 @@
     "node": ">= 12"
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.26",
+    "@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.5",
+    "@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.17"
+    "vercel-plugin-node": "1.12.2-canary.24"
   },
   "devDependencies": {
     "@next/env": "11.1.2",

packages/cli/src/commands/build.ts

@@ -298,6 +298,9 @@ export default async function main(client: Client) {
     }
   }
 
+  // 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 = {
@@ -609,30 +612,37 @@ export default async function main(client: Client) {
         }
       }
 
-      client.output.debug(`Resolve ${param('required-server-files.json')}.`);
       const requiredServerFilesPath = join(
         OUTPUT_DIR,
         '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(dirname(distDir), i);
-          const relPath = join(OUTPUT_DIR, relative(distDir, originalPath));
 
-          const absolutePath = join(cwd, relPath);
-          const output = relative(baseDir, absolutePath);
+      if (fs.existsSync(requiredServerFilesPath)) {
+        client.output.debug(`Resolve ${param('required-server-files.json')}.`);
 
-          return {
-            input: relPath,
-            output,
-          };
-        }),
-      });
+        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,
+                };
+          }),
+        });
+      }
     }
   }
 

packages/cli/src/util/dev/server.ts

@@ -968,7 +968,7 @@ export default class DevServer {
         socket.destroy();
         return;
       }
-      const target = `http://localhost:${this.devProcessPort}`;
+      const target = `http://127.0.0.1:${this.devProcessPort}`;
       this.output.debug(`Detected "upgrade" event, proxying to ${target}`);
       this.proxy.ws(req, socket, head, { target });
     });
@@ -1663,7 +1663,7 @@ export default class DevServer {
     if (!match) {
       // If the dev command is started, then proxy to it
       if (this.devProcessPort) {
-        const upstream = `http://localhost:${this.devProcessPort}`;
+        const upstream = `http://127.0.0.1:${this.devProcessPort}`;
         debug(`Proxying to frontend dev server: ${upstream}`);
 
         // Add the Vercel platform proxy request headers
@@ -1810,7 +1810,7 @@ export default class DevServer {
         return proxyPass(
           req,
           res,
-          `http://localhost:${port}`,
+          `http://127.0.0.1:${port}`,
           this,
           requestId,
           false
@@ -1847,7 +1847,7 @@ export default class DevServer {
       return proxyPass(
         req,
         res,
-        `http://localhost:${this.devProcessPort}`,
+        `http://127.0.0.1:${this.devProcessPort}`,
         this,
         requestId,
         false

packages/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/client",
-  "version": "10.2.3-canary.27",
+  "version": "10.2.3-canary.33",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "homepage": "https://vercel.com",
@@ -40,7 +40,7 @@
     ]
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.26",
+    "@vercel/build-utils": "2.12.3-canary.32",
     "@zeit/fetch": "5.2.0",
     "async-retry": "1.2.3",
     "async-sema": "3.0.0",

packages/plugin-go/package.json

@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "vercel-plugin-go",
-  "version": "1.0.0-canary.11",
+  "version": "1.0.0-canary.20",
   "main": "dist/index.js",
   "license": "MIT",
   "files": [
@@ -17,7 +17,7 @@
     "prepublishOnly": "tsc"
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.26",
+    "@vercel/build-utils": "2.12.3-canary.32",
     "@vercel/go": "1.2.4-canary.4"
   },
   "devDependencies": {

packages/plugin-go/src/index.ts

@@ -1,6 +1,6 @@
 import { convertRuntimeToPlugin } from '@vercel/build-utils';
 import * as go from '@vercel/go';
 
-export const build = convertRuntimeToPlugin(go.build, '.go');
+export const build = convertRuntimeToPlugin(go.build, 'vercel-plugin-go', '.go');
 
 export const startDevServer = go.startDevServer;

packages/plugin-node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vercel-plugin-node",
-  "version": "1.12.2-canary.17",
+  "version": "1.12.2-canary.24",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/node-js",
@@ -34,12 +34,12 @@
     "@types/node-fetch": "2",
     "@types/test-listen": "1.1.0",
     "@types/yazl": "2.4.2",
-    "@vercel/build-utils": "2.12.3-canary.26",
+    "@vercel/build-utils": "2.12.3-canary.32",
     "@vercel/fun": "1.0.3",
     "@vercel/ncc": "0.24.0",
     "@vercel/nft": "0.14.0",
     "@vercel/node-bridge": "2.1.1-canary.2",
-    "@vercel/static-config": "0.0.1-canary.0",
+    "@vercel/static-config": "0.0.1-canary.1",
     "abort-controller": "3.0.0",
     "content-type": "1.0.4",
     "cookie": "0.4.0",

packages/plugin-node/src/index.ts

@@ -40,6 +40,7 @@ import {
   walkParentDirs,
   normalizePath,
   runPackageJsonScript,
+  getInputHash,
 } from '@vercel/build-utils';
 import { FromSchema } from 'json-schema-to-ts';
 import { getConfig, BaseFunctionConfigSchema } from '@vercel/static-config';
@@ -47,8 +48,6 @@ import { AbortController } from 'abort-controller';
 import { Register, register } from './typescript';
 import { pageToRoute } from './router/page-to-route';
 import { isDynamicRoute } from './router/is-dynamic';
-import crypto from 'crypto';
-import type { VercelConfig } from '@vercel/client';
 
 export { shouldServe };
 export {
@@ -380,13 +379,7 @@ function getAWSLambdaHandler(entrypoint: string, config: FunctionConfig) {
 }
 
 // TODO NATE: turn this into a `@vercel/plugin-utils` helper function?
-export async function build({
-  vercelConfig,
-  workPath,
-}: {
-  vercelConfig: VercelConfig;
-  workPath: string;
-}) {
+export async function build({ workPath }: { workPath: string }) {
   const project = new Project();
   const entrypoints = await glob('api/**/*.[jt]s', workPath);
   const installedPaths = new Set<string>();
@@ -408,14 +401,13 @@ export async function build({
       getConfig(project, absEntrypoint, FunctionConfigSchema) || {};
 
     // No config exported means "node", but if there is a config
-    // and "runtime" is defined, but it is not "node" then don't
+    // and "use" is defined, but it is not "node" then don't
     // compile this file.
-    if (config.runtime && config.runtime !== 'node') {
+    if (config.use && config.use !== 'node') {
       continue;
     }
 
     await buildEntrypoint({
-      vercelConfig,
       workPath,
       entrypoint,
       config,
@@ -425,23 +417,18 @@ export async function build({
 }
 
 export async function buildEntrypoint({
-  vercelConfig,
   workPath,
   entrypoint,
   config,
   installedPaths,
 }: {
-  vercelConfig: VercelConfig;
   workPath: string;
   entrypoint: string;
   config: FunctionConfig;
   installedPaths?: Set<string>;
 }) {
   // Unique hash that will be used as directory name for `.output`.
-  const entrypointHash = crypto
-    .createHash('sha256')
-    .update(entrypoint)
-    .digest('hex');
+  const entrypointHash = 'api-routes-node-' + getInputHash(entrypoint);
   const outputDirPath = join(workPath, '.output');
 
   const { dir, name } = parsePath(entrypoint);
@@ -561,7 +548,7 @@ export async function buildEntrypoint({
       runtime: nodeVersion.runtime,
     },
   };
-  await updateFunctionsManifest({ vercelConfig, workPath, pages });
+  await updateFunctionsManifest({ workPath, pages });
 
   // Update the `routes-mainifest.json` file with the wildcard route
   // when the entrypoint is dynamic (i.e. `/api/[id].ts`).

packages/plugin-node/test/build.test.ts

@@ -143,16 +143,7 @@ function withFixture<T>(
       await runNpmInstall(fixture);
     }
 
-    let vercelConfig = {};
-    try {
-      vercelConfig = JSON.parse(
-        await fsp.readFile(path.join(fixture, 'vercel.json'), 'utf8')
-      );
-    } catch (e) {
-      // Consume error
-    }
-
-    await build({ vercelConfig, workPath: fixture });
+    await build({ workPath: fixture });
 
     try {
       return await t({ fixture, fetch });

packages/plugin-python/package.json

@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "vercel-plugin-python",
-  "version": "1.0.0-canary.12",
+  "version": "1.0.0-canary.21",
   "main": "dist/index.js",
   "license": "MIT",
   "files": [
@@ -17,7 +17,7 @@
     "prepublishOnly": "tsc"
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.26",
+    "@vercel/build-utils": "2.12.3-canary.32",
     "@vercel/python": "2.1.2-canary.1"
   },
   "devDependencies": {

packages/plugin-python/src/index.ts

@@ -1,6 +1,6 @@
 import { convertRuntimeToPlugin } from '@vercel/build-utils';
 import * as python from '@vercel/python';
 
-export const build = convertRuntimeToPlugin(python.build, '.py');
+export const build = convertRuntimeToPlugin(python.build, 'vercel-plugin-python', '.py');
 
 //export const startDevServer = python.startDevServer;

packages/plugin-ruby/package.json

@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "vercel-plugin-ruby",
-  "version": "1.0.0-canary.10",
+  "version": "1.0.0-canary.19",
   "main": "dist/index.js",
   "license": "MIT",
   "files": [
@@ -17,8 +17,8 @@
     "prepublishOnly": "tsc"
   },
   "dependencies": {
-    "@vercel/build-utils": "2.12.3-canary.26",
-    "@vercel/ruby": "1.2.8-canary.5"
+    "@vercel/build-utils": "2.12.3-canary.32",
+    "@vercel/ruby": "1.2.8-canary.6"
   },
   "devDependencies": {
     "@types/node": "*",

packages/plugin-ruby/src/index.ts

@@ -1,6 +1,6 @@
 import { convertRuntimeToPlugin } from '@vercel/build-utils';
 import * as ruby from '@vercel/ruby';
 
-export const build = convertRuntimeToPlugin(ruby.build, '.rb');
+export const build = convertRuntimeToPlugin(ruby.build, 'vercel-plugin-ruby', '.rb');
 
 //export const startDevServer = ruby.startDevServer;

packages/ruby/install-ruby.ts

@@ -61,18 +61,27 @@ function getRubyPath(meta: Meta, gemfileContents: string) {
 // process.env.GEM_HOME), and returns
 // the absolute path to it
 export async function installBundler(meta: Meta, gemfileContents: string) {
+  const { gemHome, rubyPath, gemPath, vendorPath, runtime } = getRubyPath(
+    meta,
+    gemfileContents
+  );
+
   // If the new File System API is used (`avoidTopLevelInstall`), the Install Command
   // will have already installed the dependencies, so we don't need to do it again.
   if (meta.avoidTopLevelInstall) {
     debug(
       `Skipping bundler installation, already installed by Install Command`
     );
-  }
 
-  const { gemHome, rubyPath, gemPath, vendorPath, runtime } = getRubyPath(
-    meta,
-    gemfileContents
-  );
+    return {
+      gemHome,
+      rubyPath,
+      gemPath,
+      vendorPath,
+      runtime,
+      bundlerPath: join(gemHome, 'bin', 'bundler'),
+    };
+  }
 
   debug('installing bundler...');
   await execa(gemPath, ['install', 'bundler', '--no-document'], {

packages/ruby/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@vercel/ruby",
   "author": "Nathan Cahill <nathan@nathancahill.com>",
-  "version": "1.2.8-canary.5",
+  "version": "1.2.8-canary.6",
   "license": "MIT",
   "main": "./dist/index",
   "homepage": "https://vercel.com/docs/runtimes#official-runtimes/ruby",

packages/ruby/test/fixtures/02-cowsay-vendored/.bundle/config

@@ -0,0 +1,2 @@
+---
+BUNDLE_PATH: "vendor/bundle"

packages/ruby/test/fixtures/02-cowsay-vendored/Gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-ruby "~> 2.5.0"
+ruby "~> 2.7.0"
 
 gem "cowsay", "~> 0.3.0"

packages/ruby/test/fixtures/02-cowsay-vendored/Gemfile.lock

@@ -0,0 +1,16 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    cowsay (0.3.0)
+
+PLATFORMS
+  x86_64-darwin-21
+
+DEPENDENCIES
+  cowsay (~> 0.3.0)
+
+RUBY VERSION
+   ruby 2.7.5p203
+
+BUNDLED WITH
+   2.2.22

packages/ruby/test/fixtures/02-cowsay-vendored/now.json

@@ -1,6 +1,6 @@
 {
   "version": 2,
   "builds": [{ "src": "index.rb", "use": "@vercel/ruby" }],
-  "build": { "env": { "RUBY_VERSION": "2.5.x" } },
+  "build": { "env": { "RUBY_VERSION": "2.7.x" } },
   "probes": [{ "path": "/", "mustContain": "gem:RANDOMNESS_PLACEHOLDER" }]
 }

packages/ruby/test/fixtures/02-cowsay-vendored/vendor/bundle/ruby/2.7.0/specifications/cowsay-0.3.0.gemspec

@@ -14,19 +14,17 @@ Gem::Specification.new do |s|
   s.executables = ["cowsay".freeze]
   s.files = ["bin/cowsay".freeze]
   s.homepage = "https://github.com/moneydesktop/cowsay".freeze
-  s.rubygems_version = "3.0.3".freeze
+  s.rubygems_version = "3.2.22".freeze
   s.summary = "ASCII art avatars emote your messages".freeze
 
-  s.installed_by_version = "3.0.3" if s.respond_to? :installed_by_version
+  s.installed_by_version = "3.2.22" if s.respond_to? :installed_by_version
 
   if s.respond_to? :specification_version then
     s.specification_version = 4
+  end
 
-    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_development_dependency(%q<rake>.freeze, [">= 0"])
-    else
-      s.add_dependency(%q<rake>.freeze, [">= 0"])
-    end
+  if s.respond_to? :add_runtime_dependency then
+    s.add_development_dependency(%q<rake>.freeze, [">= 0"])
   else
     s.add_dependency(%q<rake>.freeze, [">= 0"])
   end

packages/ruby/test/fixtures/04-cowsay-vendored-nested/.bundle/config

@@ -0,0 +1,2 @@
+---
+BUNDLE_PATH: "vendor/bundle"

packages/ruby/test/fixtures/04-cowsay-vendored-nested/now.json

@@ -1,7 +1,7 @@
 {
   "version": 2,
   "builds": [{ "src": "project/index.rb", "use": "@vercel/ruby" }],
-  "build": { "env": { "RUBY_VERSION": "2.5.x" } },
+  "build": { "env": { "RUBY_VERSION": "2.7.x" } },
   "probes": [
     { "path": "/project/", "mustContain": "gem:RANDOMNESS_PLACEHOLDER" }
   ]

packages/ruby/test/fixtures/04-cowsay-vendored-nested/project/.bundle/config

@@ -0,0 +1,2 @@
+---
+BUNDLE_PATH: "vendor/bundle"

packages/ruby/test/fixtures/04-cowsay-vendored-nested/project/Gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-ruby "~> 2.5.0"
+ruby "~> 2.7.0"
 
 gem "cowsay", "~> 0.3.0"

packages/ruby/test/fixtures/04-cowsay-vendored-nested/project/Gemfile.lock

@@ -0,0 +1,16 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    cowsay (0.3.0)
+
+PLATFORMS
+  x86_64-darwin-21
+
+DEPENDENCIES
+  cowsay (~> 0.3.0)
+
+RUBY VERSION
+   ruby 2.7.5p203
+
+BUNDLED WITH
+   2.2.22

packages/ruby/test/fixtures/04-cowsay-vendored-nested/project/vendor/bundle/ruby/2.7.0/specifications/cowsay-0.3.0.gemspec

@@ -14,19 +14,17 @@ Gem::Specification.new do |s|
   s.executables = ["cowsay".freeze]
   s.files = ["bin/cowsay".freeze]
   s.homepage = "https://github.com/moneydesktop/cowsay".freeze
-  s.rubygems_version = "3.0.3".freeze
+  s.rubygems_version = "3.2.22".freeze
   s.summary = "ASCII art avatars emote your messages".freeze
 
-  s.installed_by_version = "3.0.3" if s.respond_to? :installed_by_version
+  s.installed_by_version = "3.2.22" if s.respond_to? :installed_by_version
 
   if s.respond_to? :specification_version then
     s.specification_version = 4
+  end
 
-    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_development_dependency(%q<rake>.freeze, [">= 0"])
-    else
-      s.add_dependency(%q<rake>.freeze, [">= 0"])
-    end
+  if s.respond_to? :add_runtime_dependency then
+    s.add_development_dependency(%q<rake>.freeze, [">= 0"])
   else
     s.add_dependency(%q<rake>.freeze, [">= 0"])
   end

packages/ruby/test/fixtures/05-sinatra/Gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-ruby "~> 2.5.0"
+ruby "~> 2.7.0"
 
 gem "cowsay", "~> 0.3.0"
 

packages/ruby/test/fixtures/05-sinatra/now.json

@@ -1,6 +1,6 @@
 {
   "version": 2,
   "builds": [{ "src": "index.ru", "use": "@vercel/ruby" }],
-  "build": { "env": { "RUBY_VERSION": "2.5.x" } },
+  "build": { "env": { "RUBY_VERSION": "2.7.x" } },
   "probes": [{ "path": "/", "mustContain": "gem:RANDOMNESS_PLACEHOLDER" }]
 }

packages/static-config/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vercel/static-config",
-  "version": "0.0.1-canary.0",
+  "version": "0.0.1-canary.1",
   "license": "MIT",
   "main": "./dist/index",
   "repository": {

packages/static-config/src/index.ts

@@ -15,7 +15,7 @@ const ajv = new Ajv();
 export const BaseFunctionConfigSchema = {
   type: 'object',
   properties: {
-    runtime: { type: 'string' },
+    use: { type: 'string' },
     memory: { type: 'number' },
     maxDuration: { type: 'number' },
     regions: {