feat(nextjs): Use next.js cli for build and serve targets (#16896)

docs/generated/packages/next/executors/build.json

@@ -68,8 +68,15 @@
       },
       "debug": {
         "type": "boolean",
-        "description": "Enable Next.js debug build logging",
+        "description": "Enable Next.js debug build logging"
-        "default": false
+      },
+      "profile": {
+        "type": "boolean",
+        "description": "Used to enable React Production Profiling"
+      },
+      "experimentalAppOnly": {
+        "type": "boolean",
+        "description": "Only build 'app' routes"
       }
     },
     "required": ["root", "outputPath"],

docs/generated/packages/next/executors/export.json

@@ -33,6 +33,7 @@
     "presets": []
   },
   "description": "Export a Next.js application. The exported application is located at `dist/$outputPath/exported`.",
+  "x-deprecated": "Use static exports in next.config.js instead. See: https://nextjs.org/docs/pages/building-your-application/deploying/static-exports.",
   "aliases": [],
   "hidden": false,
   "path": "/packages/next/src/executors/export/schema.json",

docs/generated/packages/next/executors/server.json

@@ -53,6 +53,10 @@
         "type": "boolean",
         "description": "Read buildable libraries from source instead of building them separately.",
         "default": true
+      },
+      "keepAliveTimeout": {
+        "type": "number",
+        "description": "Max milliseconds to wait before closing inactive connection."
       }
     },
     "required": ["buildTarget"],

e2e/next/src/utils.ts

@@ -1,6 +1,7 @@
+import { execSync } from 'child_process';
 import {
   checkFilesExist,
-  killPorts,
+  killPort,
   readJson,
   runCLI,
   runCLIAsync,
@@ -42,10 +43,10 @@ export async function checkApp(
 
   if (opts.checkE2E && runCypressTests()) {
     const e2eResults = runCLI(
-      `e2e ${appName}-e2e --no-watch --configuration=production`
+      `e2e ${appName}-e2e --no-watch --configuration=production --port=9000`
     );
     expect(e2eResults).toContain('All specs passed!');
-    expect(await killPorts()).toBeTruthy();
+    await killPort(9000);
   }
 
   if (opts.checkExport) {

packages/next/executors.json

@@ -13,7 +13,8 @@
     "export": {
       "implementation": "./src/executors/export/export.impl",
       "schema": "./src/executors/export/schema.json",
-      "description": "Export a Next.js application. The exported application is located at `dist/$outputPath/exported`."
+      "description": "Export a Next.js application. The exported application is located at `dist/$outputPath/exported`.",
+      "x-deprecated": "Use static exports in next.config.js instead. See: https://nextjs.org/docs/pages/building-your-application/deploying/static-exports."
     }
   },
   "builders": {
@@ -30,7 +31,8 @@
     "export": {
       "implementation": "./src/executors/export/compat",
       "schema": "./src/executors/export/schema.json",
-      "description": "Export a Next.js application. The exported application is located at `dist/$outputPath/exported`."
+      "description": "Export a Next.js application. The exported application is located at `dist/$outputPath/exported`.",
+      "x-deprecated": "Use static exports in next.config.js instead. See: https://nextjs.org/docs/pages/building-your-application/deploying/static-exports."
     }
   }
 }

packages/next/package.json

@@ -31,7 +31,7 @@
     "migrations": "./migrations.json"
   },
   "peerDependencies": {
-    "next": "^13.0.0"
+    "next": ">=13.0.0"
   },
   "dependencies": {
     "@babel/plugin-proposal-decorators": "^7.14.5",

packages/next/plugins/with-nx.ts

@@ -113,55 +113,10 @@ function getNxContext(
 /**
  * Try to read output dir from project, and default to '.next' if executing outside of Nx (e.g. dist is added to a docker image).
  */
-async function determineDistDirForProdServer(
-  nextConfig: NextConfig
-): Promise<string> {
-  const project = process.env.NX_TASK_TARGET_PROJECT;
-  const target = process.env.NX_TASK_TARGET_TARGET;
-  const configuration = process.env.NX_TASK_TARGET_CONFIGURATION;
-
-  try {
-    if (project && target) {
-      // If NX env vars are set, then devkit must be available.
-      const {
-        createProjectGraphAsync,
-        joinPathFragments,
-        offsetFromRoot,
-      } = require('@nx/devkit');
-      const originalTarget = { project, target, configuration };
-      const graph = await createProjectGraphAsync();
-
-      const { options, node: projectNode } = getNxContext(
-        graph,
-        originalTarget
-      );
-      const outputDir = `${offsetFromRoot(projectNode.data.root)}${
-        options.outputPath
-      }`;
-      return nextConfig.distDir && nextConfig.distDir !== '.next'
-        ? joinPathFragments(outputDir, nextConfig.distDir)
-        : joinPathFragments(outputDir, '.next');
-    }
-  } catch {
-    // ignored -- fallback to Next.js default of '.next'
-  }
-
-  return nextConfig.distDir || '.next';
-}
-
 function withNx(
   _nextConfig = {} as WithNxOptions,
   context: WithNxContext = getWithNxContext()
 ): NextConfigFn {
-  // If this is not set user will see compile errors in Next.js 13.4.
-  // See: https://github.com/nrwl/nx/issues/16692, https://github.com/vercel/next.js/issues/49169
-  // TODO(jack): Remove this once Nx is refactored to invoke CLI directly.
-  forNextVersion('>=13.4.0', () => {
-    process.env['__NEXT_PRIVATE_PREBUNDLED_REACT'] =
-      // Not in Next 13.3 or earlier, so need to access config via string
-      _nextConfig.experimental?.['serverActions'] ? 'experimental' : 'next';
-  });
-
   return async (phase: string) => {
     const { PHASE_PRODUCTION_SERVER } = await import('next/constants');
     if (phase === PHASE_PRODUCTION_SERVER) {
@@ -169,8 +124,8 @@ function withNx(
       // NOTE: Avoid any `require(...)` or `import(...)` statements here. Development dependencies are not available at production runtime.
       const { nx, ...validNextConfig } = _nextConfig;
       return {
+        distDir: '.next',
         ...validNextConfig,
-        distDir: await determineDistDirForProdServer(_nextConfig),
       };
     } else {
       const {

packages/next/src/executors/build/build.impl.ts

@@ -4,9 +4,9 @@ import {
   readJsonFile,
   workspaceRoot,
   writeJsonFile,
+  logger,
 } from '@nx/devkit';
 import { createLockFile, createPackageJson, getLockFileName } from '@nx/js';
-import build from 'next/dist/build';
 import { join, resolve } from 'path';
 import { copySync, existsSync, mkdir, writeFileSync } from 'fs-extra';
 import { lt, gte } from 'semver';
@@ -17,6 +17,8 @@ import { updatePackageJson } from './lib/update-package-json';
 import { createNextConfigFile } from './lib/create-next-config-file';
 import { checkPublicDirectory } from './lib/check-project';
 import { NextBuildBuilderOptions } from '../../utils/types';
+import { ExecSyncOptions, execSync } from 'child_process';
+import { createCliOptions } from '../../utils/create-cli-options';
 
 export default async function buildExecutor(
   options: NextBuildBuilderOptions,
@@ -42,22 +44,24 @@ export default async function buildExecutor(
     reactDomVersion &&
     gte(checkAndCleanWithSemver('react-dom', reactDomVersion), '18.0.0');
   if (hasReact18) {
-    (process.env as any).__NEXT_REACT_ROOT ||= 'true';
+    process.env['__NEXT_REACT_ROOT'] ||= 'true';
   }
 
-  // Get the installed Next.js version (will be removed after Nx 16 and Next.js update)
+  const { experimentalAppOnly, profile, debug } = options;
-  const nextVersion = require('next/package.json').version;
 
-  const debug = !!process.env.NX_VERBOSE_LOGGING || options.debug;
+  const args = createCliOptions({ experimentalAppOnly, profile, debug });
-
+  const command = `npx next build ${args}`;
-  // Check the major and minor version numbers
+  const execSyncOptions: ExecSyncOptions = {
-  if (lt(nextVersion, '13.2.0')) {
+    stdio: 'inherit',
-    // If the version is lower than 13.2.0, use the second parameter as the config object
+    encoding: 'utf-8',
-    await build(root, null, false, debug);
+    cwd: root,
-  } else {
+  };
-    // Otherwise, use the third parameter as a boolean flag for verbose logging
+  try {
-    // @ts-ignore
+    execSync(command, execSyncOptions);
-    await build(root, false, debug);
+  } catch (error) {
+    logger.error(`Error occurred while trying to run the ${command}`);
+    logger.error(error);
+    return { success: false };
   }
 
   if (!directoryExists(options.outputPath)) {

packages/next/src/executors/build/schema.json

@@ -65,8 +65,15 @@
     },
     "debug": {
       "type": "boolean",
-      "description": "Enable Next.js debug build logging",
+      "description": "Enable Next.js debug build logging"
-      "default": false
+    },
+    "profile": {
+      "type": "boolean",
+      "description": "Used to enable React Production Profiling"
+    },
+    "experimentalAppOnly": {
+      "type": "boolean",
+      "description": "Only build 'app' routes"
     }
   },
   "required": ["root", "outputPath"]

packages/next/src/executors/export/export.impl.ts

@@ -16,7 +16,7 @@ import {
   NextBuildBuilderOptions,
   NextExportBuilderOptions,
 } from '../../utils/types';
-import { PHASE_EXPORT } from '../../utils/constants';
+
 import nextTrace = require('next/dist/trace');
 import { platform } from 'os';
 import { execFileSync } from 'child_process';
@@ -25,6 +25,18 @@ import * as chalk from 'chalk';
 // platform specific command name
 const pmCmd = platform() === 'win32' ? `npx.cmd` : 'npx';
 
+/**
+ * @deprecated use output inside of your next.config.js
+ * Example
+ * const nextConfig = {
+  nx: {
+    svgr: false,
+  },
+
+  output: 'export'
+};
+ * Read https://nextjs.org/docs/pages/building-your-application/deploying/static-exports
+ **/
 export default async function exportExecutor(
   options: NextExportBuilderOptions,
   context: ExecutorContext
@@ -41,7 +53,6 @@ export default async function exportExecutor(
     dependencies = result.dependencies;
   }
 
-  const libsDir = join(context.root, workspaceLayout().libsDir);
   const buildTarget = parseTargetString(
     options.buildTarget,
     context.projectGraph

packages/next/src/executors/server/custom-server.impl.ts

@@ -0,0 +1,67 @@
+import 'dotenv/config';
+import {
+  ExecutorContext,
+  parseTargetString,
+  readTargetOptions,
+  runExecutor,
+} from '@nx/devkit';
+import { join, resolve } from 'path';
+
+import {
+  NextBuildBuilderOptions,
+  NextServeBuilderOptions,
+} from '../../utils/types';
+
+export default async function* serveExecutor(
+  options: NextServeBuilderOptions,
+  context: ExecutorContext
+) {
+  // Cast to any to overwrite NODE_ENV
+  (process.env as any).NODE_ENV = process.env.NODE_ENV
+    ? process.env.NODE_ENV
+    : options.dev
+    ? 'development'
+    : 'production';
+
+  // Setting port that the custom server should use.
+  (process.env as any).PORT = options.port;
+
+  const buildOptions = readTargetOptions<NextBuildBuilderOptions>(
+    parseTargetString(options.buildTarget, context.projectGraph),
+    context
+  );
+  const root = resolve(context.root, buildOptions.root);
+
+  yield* runCustomServer(root, options, context);
+}
+
+async function* runCustomServer(
+  root: string,
+  options: NextServeBuilderOptions,
+  context: ExecutorContext
+) {
+  process.env.NX_NEXT_DIR = root;
+  process.env.NX_NEXT_PUBLIC_DIR = join(root, 'public');
+
+  const baseUrl = `http://${options.hostname || 'localhost'}:${options.port}`;
+
+  const customServerBuild = await runExecutor(
+    parseTargetString(options.customServerTarget, context.projectGraph),
+    {
+      watch: options.dev ? true : false,
+    },
+    context
+  );
+
+  for await (const result of customServerBuild) {
+    if (!result.success) {
+      return result;
+    }
+    yield {
+      success: true,
+      baseUrl,
+    };
+  }
+
+  return { success: true };
+}

packages/next/src/executors/server/schema.json

@@ -50,6 +50,10 @@
       "type": "boolean",
       "description": "Read buildable libraries from source instead of building them separately.",
       "default": true
+    },
+    "keepAliveTimeout": {
+      "type": "number",
+      "description": "Max milliseconds to wait before closing inactive connection."
     }
   },
   "required": ["buildTarget"]

packages/next/src/executors/server/server.impl.ts

@@ -1,27 +1,29 @@
 import 'dotenv/config';
+import * as net from 'net';
 import {
   ExecutorContext,
   logger,
   parseTargetString,
   readTargetOptions,
-  runExecutor,
 } from '@nx/devkit';
-import * as chalk from 'chalk';
+import { resolve } from 'path';
-import { existsSync } from 'fs';
-import { join, resolve } from 'path';
 
 import {
   NextBuildBuilderOptions,
   NextServeBuilderOptions,
-  NextServerOptions,
-  ProxyConfig,
 } from '../../utils/types';
-import { defaultServer } from './lib/default-server';
+import { spawn } from 'child_process';
+import customServer from './custom-server.impl';
+import { createCliOptions } from '../../utils/create-cli-options';
+import { createAsyncIterable } from '@nx/devkit/src/utils/async-iterable';
 
 export default async function* serveExecutor(
   options: NextServeBuilderOptions,
   context: ExecutorContext
 ) {
+  if (options.customServerTarget) {
+    return yield* customServer(options, context);
+  }
   // Cast to any to overwrite NODE_ENV
   (process.env as any).NODE_ENV = process.env.NODE_ENV
     ? process.env.NODE_ENV
@@ -38,96 +40,74 @@ export default async function* serveExecutor(
   );
   const root = resolve(context.root, buildOptions.root);
 
-  if (options.customServerTarget) {
+  const { port, keepAliveTimeout, hostname } = options;
-    yield* runCustomServer(root, options, buildOptions, context);
-  } else {
-    yield* runNextDevServer(root, options, context);
-  }
-}
 
-async function* runNextDevServer(
+  const args = createCliOptions({ port, keepAliveTimeout, hostname });
-  root: string,
+  const nextDir = resolve(context.root, buildOptions.outputPath);
-  options: NextServeBuilderOptions,
+
-  context: ExecutorContext
+  const command = `npx next ${options.dev ? `dev ${args}` : `start ${args}`}`;
-) {
+
-  const baseUrl = `http://${options.hostname || 'localhost'}:${options.port}`;
+  yield* createAsyncIterable<{ success: boolean; baseUrl: string }>(
-  const settings: NextServerOptions = {
+    ({ done, next, error }) => {
-    dev: options.dev,
+      // Client to check if server is ready.
-    dir: root,
+      const client = new net.Socket();
-    staticMarkup: options.staticMarkup,
+      const cleanupClient = () => {
-    quiet: options.quiet,
+        client.removeAllListeners('connect');
-    port: options.port,
+        client.removeAllListeners('error');
-    customServer: !!options.customServerTarget,
+        client.end();
-    hostname: options.hostname || 'localhost',
+        client.destroy();
+        client.unref();
       };
 
-  // look for the proxy.conf.json
+      const waitForServerReady = (retries = 30) => {
-  let proxyConfig: ProxyConfig;
+        const allowedErrorCodes = ['ECONNREFUSED', 'ECONNRESET'];
-  const proxyConfigPath = options.proxyConfig
-    ? join(context.root, options.proxyConfig)
-    : join(root, 'proxy.conf.json');
 
-  // TODO(v16): Remove proxy support.
+        client.once('connect', () => {
-  if (existsSync(proxyConfigPath)) {
+          cleanupClient();
-    logger.warn(
+          next({
-      `The "proxyConfig" option will be removed in Nx 16. Use the "rewrites" feature from Next.js instead. See: https://nextjs.org/docs/api-reference/next.config.js/rewrites`
-    );
-    proxyConfig = require(proxyConfigPath);
-  }
-
-  try {
-    await defaultServer(settings, proxyConfig);
-    logger.info(`[ ${chalk.green('ready')} ] on ${baseUrl}`);
-
-    yield {
-      baseUrl,
             success: true,
-    };
+            baseUrl: `http://${options.hostname ?? 'localhost'}:${port}`,
+          });
+        });
 
-    // This Promise intentionally never resolves, leaving the process running
+        client.on('error', (err) => {
-    await new Promise<{ success: boolean }>(() => {});
+          if (retries === 0 || !allowedErrorCodes.includes(err['code'])) {
-  } catch (e) {
+            cleanupClient();
-    if (options.dev) {
+            error(err);
-      throw e;
           } else {
-      if (process.env.NX_VERBOSE_LOGGING) {
+            setTimeout(() => waitForServerReady(retries - 1), 1000);
-        console.error(e);
-      }
-      throw new Error(
-        `Could not start production server. Try building your app with \`nx build ${context.projectName}\`.`
-      );
-    }
-  }
           }
+        });
 
-async function* runCustomServer(
+        client.connect({ port, host: '127.0.0.1' });
-  root: string,
-  options: NextServeBuilderOptions,
-  buildOptions: NextBuildBuilderOptions,
-  context: ExecutorContext
-) {
-  process.env.NX_NEXT_DIR = root;
-  process.env.NX_NEXT_PUBLIC_DIR = join(root, 'public');
-
-  const baseUrl = `http://${options.hostname || 'localhost'}:${options.port}`;
-
-  const customServerBuild = await runExecutor(
-    parseTargetString(options.customServerTarget, context.projectGraph),
-    {
-      watch: options.dev ? true : false,
-    },
-    context
-  );
-
-  for await (const result of customServerBuild) {
-    if (!result.success) {
-      return result;
-    }
-    yield {
-      success: true,
-      baseUrl,
       };
-  }
 
-  return { success: true };
+      const server = spawn(command, {
+        cwd: options.dev ? root : nextDir,
+        stdio: 'inherit',
+        shell: true,
+      });
+
+      waitForServerReady();
+
+      server.once('exit', (code) => {
+        cleanupClient();
+        if (code === 0) {
+          done();
+        } else {
+          error(new Error(`Next.js app exited with code ${code}`));
+        }
+      });
+
+      process.on('exit', async (code) => {
+        if (code === 128 + 2) {
+          server.kill('SIGINT');
+        } else if (code === 128 + 1) {
+          server.kill('SIGHUP');
+        } else {
+          server.kill('SIGTERM');
+        }
+      });
+    }
+  );
 }

packages/next/src/utils/config.ts

@@ -41,7 +41,7 @@ export function createWebpackConfig(
   ): Configuration {
     const mainFields = ['es2015', 'module', 'main'];
     const extensions = ['.ts', '.tsx', '.mjs', '.js', '.jsx'];
-    let tsConfigPath = join(projectRoot, 'tsconfig.json');
+    let tsConfigPath = join(workspaceRoot, projectRoot, 'tsconfig.json');
     if (dependencies.length > 0) {
       tsConfigPath = createTmpTsConfig(
         join(workspaceRoot, tsConfigPath),

packages/next/src/utils/create-cli-options.ts

@@ -0,0 +1,12 @@
+export function createCliOptions(obj: { [key: string]: any }): string {
+  return Object.entries(obj)
+    .reduce((arr, [key, value]) => {
+      if (value !== undefined) {
+        const kebabCase = key.replace(/[A-Z]/g, (m) => '-' + m.toLowerCase());
+        return `${arr}--${kebabCase}=${value} `;
+      } else {
+        return arr;
+      }
+    }, '')
+    .trim();
+}

packages/next/src/utils/types.ts

@@ -38,6 +38,8 @@ export interface NextBuildBuilderOptions {
   generateLockfile?: boolean;
   watch?: boolean;
   debug?: boolean;
+  profile?: boolean;
+  experimentalAppOnly?: boolean;
 }
 
 export interface NextServeBuilderOptions {
@@ -50,6 +52,7 @@ export interface NextServeBuilderOptions {
   hostname?: string;
   proxyConfig?: string;
   buildLibsFromSource?: boolean;
+  keepAliveTimeout?: number;
 }
 
 export interface NextExportBuilderOptions {