[pull] main from expo:main

packages/@expo/cli/CHANGELOG.md

@@ -10,6 +10,7 @@
 
 - Add missing `Content-Type: application/json` to internal `/symbolicate` call ([#43074](https://github.com/expo/expo/pull/43074) by [@kitten](https://github.com/kitten))
 - Key loader data by `contextKey` instead of URL pathname ([#43017](https://github.com/expo/expo/pull/43017) by [@hassankhan]
+- Fix port prompt causing process hangs on some systems when checking the conflicting process's info ([#43054](https://github.com/expo/expo/pull/43054) by [@kitten](https://github.com/kitten))
 
 ### 💡 Others
 
@@ -19,6 +20,7 @@
 - Drop obsolete `rawBody` parsing from Metro middleware stack ([#43074](https://github.com/expo/expo/pull/43074) by [@kitten](https://github.com/kitten))
 - Add minimum Node.js version check and warning to CLI startup ([#43076](https://github.com/expo/expo/pull/43076) by [@kitten](https://github.com/kitten))
 - Retrieve default route's IP address concurrently ([#42923](https://github.com/expo/expo/pull/42923) by [@kitten](https://github.com/kitten))
+- Replace `require-from-string` with `@expo/require-utils` ([#42884](https://github.com/expo/expo/pull/42884) by [@kitten](https://github.com/kitten))
 
 ## 55.0.7 — 2026-02-08
 

packages/@expo/cli/e2e/__tests__/customize-test.ts

@@ -89,8 +89,8 @@ it('runs `npx expo customize tsconfig.json`', async () => {
     'with-router',
     {
       reuseExisting: false,
-      // TODO(@hassankhan): remove @expo/router-server after publishing
-      linkExpoPackages: ['expo-router', '@expo/router-server'],
+      // TODO(@hassankhan): remove @expo/router-server & require-utils after publishing
+      linkExpoPackages: ['expo-router', '@expo/router-server', '@expo/require-utils'],
     }
   );
 
@@ -111,8 +111,8 @@ it('runs `npx expo customize tsconfig.json` on a partially setup project', async
     'with-router',
     {
       reuseExisting: false,
-      // TODO(@hassankhan): remove expo-router and @expo/router-server after publishing
-      linkExpoPackages: ['expo-router', '@expo/router-server'],
+      // TODO(@hassankhan): remove @expo/router-server & require-utils after publishing
+      linkExpoPackages: ['expo-router', '@expo/router-server', '@expo/require-utils'],
     }
   );
 
@@ -146,10 +146,10 @@ it('runs `npx expo customize tsconfig.json` sets up typed routes', async () => {
   const projectRoot = await setupTestProjectWithOptionsAsync(
     'expo-customize-typed-routes',
     'with-router-typed-routes',
-    // TODO(@hassankhan): remove @expo/router-server after publishing
     {
       reuseExisting: false,
-      linkExpoPackages: ['expo-router', '@expo/log-box', '@expo/router-server'],
+      // TODO(@hassankhan): remove @expo/router-server & require-utils after publishing
+      linkExpoPackages: ['expo-router', '@expo/log-box', '@expo/router-server', '@expo/require-utils'],
     }
   );
 

packages/@expo/cli/e2e/__tests__/export-monorepo-test.ts

@@ -20,7 +20,7 @@ beforeAll(async () => {
     // NOTE(cedric): this is a temporary workaround to avoid `@expo/cli` or `@expo/metro-config` to link to packages inside the expo/expo monorepo
     // For some reason, this has gotten more unstable than it was and may result in unexpected SHA1 files not being calculated (even though they are included in the watch folders)
     // TODO(@hassankhan): remove expo-router and @expo/router-server after publishing
-    linkExpoPackages: ['@expo/cli', '@expo/router-server', 'expo-router'],
+    linkExpoPackages: ['@expo/cli', '@expo/router-server', 'expo-router', '@expo/require-utils'],
   });
 });
 

packages/@expo/cli/e2e/__tests__/install-test.ts

@@ -222,8 +222,8 @@ describe('expo-router integration', () => {
       'with-router',
       {
         reuseExisting: false,
-        // TODO(@hassankhan): remove @expo/router-server after publishing
-        linkExpoPackages: ['expo-router', '@expo/router-server'],
+        // TODO(@hassankhan): remove @expo/router-server & require-utils after publishing
+        linkExpoPackages: ['expo-router', '@expo/router-server', '@expo/require-utils'],
       }
     );
 

packages/@expo/cli/e2e/__tests__/metro-server-test.ts

@@ -10,7 +10,7 @@ const expo = createExpoStart({
 
 beforeAll(async () => {
   expo.options.cwd = await setupTestProjectWithOptionsAsync('metro-server', 'with-assets', {
-    linkExpoPackages: ['expo', '@expo/log-box', '@expo/local-build-cache-provider'],
+    linkExpoPackages: ['expo', '@expo/log-box', '@expo/local-build-cache-provider', '@expo/require-utils'],
   });
   await expo.startAsync();
 });

packages/@expo/cli/e2e/__tests__/start-test.ts

@@ -98,10 +98,11 @@ describeSkipWin('server', () => {
 
   beforeEach(async () => {
     expo.options.cwd = await setupTestProjectWithOptionsAsync('basic-start', 'with-blank', {
-      // TODO(@hassankhan, @krystofwoldrich): remove all linked after publishing
+      // TODO(@hassankhan, @krystofwoldrich, @kitten): remove all linked after publishing
       linkExpoPackages: [
         '@expo/router-server',
         '@expo/log-box',
+        '@expo/require-utils',
         'expo',
         '@expo/local-build-cache-provider',
       ],

packages/@expo/cli/e2e/playwright/dev/hmr-env-vars.test.ts

@@ -44,6 +44,7 @@ test.describe('router-e2e with spaces', () => {
           'babel-preset-expo',
           '@expo/metro-config',
           'expo-server',
+          '@expo/require-utils',
         ],
       }
     );

packages/@expo/cli/e2e/playwright/dev/with-spaces.test.ts

@@ -30,7 +30,7 @@ test.describe('router-e2e with spaces', () => {
       {
         // TODO(@hassankhan, @krystofwoldrich): remove linked packages after publishing
         linkExpoPackages: ['@expo/router-server', 'expo-router', '@expo/log-box'],
-        linkExpoPackagesDev: ['@expo/cli', 'expo-server'],
+        linkExpoPackagesDev: ['@expo/cli', 'expo-server', '@expo/require-utils'],
       }
     );
 

packages/@expo/cli/package.json

@@ -54,6 +54,7 @@
     "@expo/package-manager": "^1.10.3",
     "@expo/plist": "^0.5.2",
     "@expo/prebuild-config": "^55.0.4",
+    "@expo/require-utils": "^55.0.0",
     "@expo/router-server": "^55.0.5",
     "@expo/schema-utils": "^55.0.2",
     "@expo/spawn-async": "^1.7.2",
@@ -86,7 +87,6 @@
     "pretty-format": "^29.7.0",
     "progress": "^2.0.3",
     "prompts": "^2.3.2",
-    "require-from-string": "^2.0.2",
     "resolve-from": "^5.0.0",
     "semver": "^7.6.0",
     "send": "^0.19.0",

packages/@expo/cli/src/start/server/getStaticRenderFunctions.ts

@@ -5,9 +5,9 @@
  * LICENSE file in the root directory of this source tree.
  */
 import { getMetroServerRoot } from '@expo/config/paths';
+import { evalModule } from '@expo/require-utils';
 import fs from 'fs';
 import path from 'path';
-import requireString from 'require-from-string';
 
 import { IS_METRO_BUNDLE_ERROR_SYMBOL, logMetroError } from './metro/metroErrorInterface';
 import { createBundleUrlPath, ExpoMetroOptions } from './middleware/metroOptions';
@@ -147,5 +147,5 @@ export function evalMetroNoHandling(projectRoot: string, src: string, filename:
     debug(`evalMetroNoHandling received filename outside of the project root: ${filename}`);
   }
 
-  return profile(requireString, 'eval-metro-bundle')(src, filename);
+  return profile(evalModule, 'eval-metro-bundle')(src, filename);
 }

packages/@expo/cli/src/start/server/metro/runServer-fork.ts

@@ -17,7 +17,6 @@ import type { WebSocketServer } from 'ws';
 
 import { MetroBundlerDevServer } from './MetroBundlerDevServer';
 import { Log } from '../../../log';
-import { getRunningProcess } from '../../../utils/getRunningProcess';
 import type { ConnectAppType } from '../middleware/server.types';
 
 export const runServer = async (
@@ -79,12 +78,15 @@ export const runServer = async (
     if ('code' in error && error.code === 'EADDRINUSE') {
       // If `Error: listen EADDRINUSE: address already in use :::8081` then print additional info
       // about the process before throwing.
-      const info = getRunningProcess(config.server.port);
-      if (info) {
-        Log.error(
-          `Port ${config.server.port} is busy running ${info.command} in: ${info.directory}`
-        );
-      }
+      const { getRunningProcess } =
+        require('../../../utils/getRunningProcess') as typeof import('../../../utils/getRunningProcess');
+      getRunningProcess(config.server.port).then((info) => {
+        if (info) {
+          Log.error(
+            `Port ${config.server.port} is busy running ${info.command} in: ${info.directory}`
+          );
+        }
+      });
     }
 
     if (onError) {

packages/@expo/cli/src/utils/__tests__/getRunningProcess-test.ts

@@ -1,19 +1,29 @@
-import { execFileSync, execSync } from 'child_process';
+import spawnAsync from '@expo/spawn-async';
 
-import { getDirectoryOfProcessById, getPID } from '../getRunningProcess';
+import { getDirectoryOfProcessById, getPID, getProcessCommand } from '../getRunningProcess';
+
+jest.mock('@expo/spawn-async');
 
 describe(getPID, () => {
-  it(`should return the pid value for a running port`, () => {
-    jest.mocked(execFileSync).mockImplementationOnce(() => '63828');
-    const pid = getPID(63828);
+  it(`should return the pid value for a running port`, async () => {
+    jest.mocked(spawnAsync).mockResolvedValueOnce({ stdout: ' 63828 ' } as any);
+    const pid = await getPID(8081);
     expect(pid).toBe(63828);
   });
 });
 
 describe(getDirectoryOfProcessById, () => {
-  it(`should return the directory of a pid`, () => {
-    jest.mocked(execSync).mockImplementationOnce(() => 'cwd');
-    const directory = getDirectoryOfProcessById(63828);
-    expect(directory).toBe('cwd');
+  it(`should return the directory of a pid`, async () => {
+    jest.mocked(spawnAsync).mockResolvedValueOnce({ stdout: '\nn/test/folder\n' } as any);
+    const directory = await getDirectoryOfProcessById(63828);
+    expect(directory).toBe('/test/folder');
+  });
+});
+
+describe(getProcessCommand, () => {
+  it(`should return the argv of a pid`, async () => {
+    jest.mocked(spawnAsync).mockResolvedValueOnce({ stdout: 'command arg' } as any);
+    const command = await getProcessCommand(63828, __dirname);
+    expect(command).toBe('command arg');
   });
 });

packages/@expo/cli/src/utils/getRunningProcess.ts

@@ -1,22 +1,20 @@
-import { execFileSync, execSync, ExecSyncOptionsWithStringEncoding } from 'child_process';
+import spawnAsync from '@expo/spawn-async';
 import * as path from 'path';
 
 const debug = require('debug')('expo:utils:getRunningProcess') as typeof console.log;
 
-const defaultOptions: ExecSyncOptionsWithStringEncoding = {
-  encoding: 'utf8',
-  stdio: ['pipe', 'pipe', 'ignore'],
-};
+/** Timeout applied to shell commands */
+const timeout = 350;
 
 /** Returns a pid value for a running port like `63828` or null if nothing is running on the given port. */
-export function getPID(port: number): number | null {
+export async function getPID(port: number): Promise<number | null> {
   try {
-    const results = execFileSync('lsof', [`-i:${port}`, '-P', '-t', '-sTCP:LISTEN'], defaultOptions)
-      .split('\n')[0]
-      .trim();
-    const pid = Number(results);
+    const { stdout } = await spawnAsync('lsof', [`-i:${port}`, '-P', '-t', '-sTCP:LISTEN'], {
+      timeout,
+    });
+    const pid = Number(stdout.split('\n', 1)[0].trim());
     debug(`pid: ${pid} for port: ${port}`);
-    return pid;
+    return Number.isSafeInteger(pid) ? pid : null;
   } catch (error: any) {
     debug(`No pid found for port: ${port}. Error: ${error}`);
     return null;
@@ -25,55 +23,81 @@ export function getPID(port: number): number | null {
 
 /** Get `package.json` `name` field for a given directory. Returns `null` if none exist. */
 function getPackageName(packageRoot: string): string | null {
-  const packageJson = path.join(packageRoot, 'package.json');
   try {
+    const packageJson = path.resolve(packageRoot, 'package.json');
     return require(packageJson).name || null;
-  } catch {
+  } catch (error) {
     return null;
   }
 }
 
 /** Returns a command like `node /Users/evanbacon/.../bin/expo start` or the package.json name. */
-function getProcessCommand(pid: number, procDirectory: string): string {
-  const name = getPackageName(procDirectory);
-
-  if (name) {
-    return name;
+export async function getProcessCommand(
+  pid: number,
+  procDirectory: string
+): Promise<string | null> {
+  let name = getPackageName(procDirectory);
+  if (!name) {
+    // ps
+    // -o args=: Output argv without header
+    // -p [pid]: For process of PID
+    const { stdout } = await spawnAsync('ps', ['-o', 'args=', '-p', `${pid}`], {
+      timeout,
+    });
+    name = stdout.trim();
   }
-  return execSync(`ps -o command -p ${pid} | sed -n 2p`, defaultOptions).replace(/\n$/, '').trim();
+  return name || null;
 }
 
 /** Get directory for a given process ID. */
-export function getDirectoryOfProcessById(processId: number): string {
-  return execSync(
-    `lsof -p ${processId} | awk '$4=="cwd" {for (i=9; i<=NF; i++) printf "%s ", $i}'`,
-    defaultOptions
-  ).trim();
+export async function getDirectoryOfProcessById(pid: number): Promise<string | null> {
+  try {
+    // lsof
+    // -F n: ask for machine readable output
+    // -a: apply conditions as logical AND
+    // -d cwd: Filter by cwd fd
+    // -p [pid]: Filter by input process id
+    const { stdout } = await spawnAsync('lsof', ['-F', 'n', '-a', '-d', 'cwd', '-p', `${pid}`], {
+      timeout,
+    });
+    const processCWD = stdout
+      .split('\n')
+      .find((output) => output.startsWith('n'))
+      ?.slice(1);
+    return processCWD && path.isAbsolute(processCWD) ? path.normalize(processCWD) : null;
+  } catch {
+    return null;
+  }
 }
 
-/** Get information about a running process given a port. Returns null if no process is running on the given port. */
-export function getRunningProcess(port: number): {
+interface RunningProcess {
   /** The PID value for the port. */
   pid: number;
   /** Get the directory for the running process. */
   directory: string;
   /** The command running the process like `node /Users/evanbacon/.../bin/expo start` or the `package.json` name like `my-app`. */
   command: string;
-} | null {
-  // 63828
-  const pid = getPID(port);
-  if (!pid) {
+}
+
+/** Get information about a running process given a port. Returns null if no process is running on the given port. */
+export async function getRunningProcess(port: number): Promise<RunningProcess | null> {
+  // Don't even try on Windows, since `lsof` and `ps` are not available there
+  if (process.platform === 'win32') {
     return null;
   }
 
-  try {
-    // /Users/evanbacon/Documents/GitHub/lab/myapp
-    const directory = getDirectoryOfProcessById(pid);
-    // /Users/evanbacon/Documents/GitHub/lab/myapp/package.json
-    const command = getProcessCommand(pid, directory);
-    // TODO: Have a better message for reusing another process.
-    return { pid, directory, command };
-  } catch {
+  const pid = await getPID(port);
+  if (!pid) {
     return null;
   }
+  try {
+    const directory = await getDirectoryOfProcessById(pid);
+    if (directory) {
+      const command = await getProcessCommand(pid, directory);
+      if (command) {
+        return { pid, directory, command };
+      }
+    }
+  } catch {}
+  return null;
 }

packages/@expo/cli/src/utils/port.ts

@@ -51,8 +51,7 @@ function isRestrictedPort(port: number) {
 async function isBusyPortRunningSameProcessAsync(projectRoot: string, { port }: { port: number }) {
   const { getRunningProcess } =
     require('./getRunningProcess') as typeof import('./getRunningProcess');
-
-  const runningProcess = isRestrictedPort(port) ? null : getRunningProcess(port);
+  const runningProcess = isRestrictedPort(port) ? null : await getRunningProcess(port);
   if (runningProcess) {
     if (runningProcess.directory === projectRoot) {
       return true;
@@ -91,7 +90,7 @@ export async function choosePortAsync(
 
     const { getRunningProcess } =
       require('./getRunningProcess') as typeof import('./getRunningProcess');
-    const runningProcess = isRestricted ? null : getRunningProcess(defaultPort);
+    const runningProcess = isRestricted ? null : await getRunningProcess(defaultPort);
 
     if (runningProcess) {
       const pidTag = chalk.gray(`(pid ${runningProcess.pid})`);

packages/@expo/config/CHANGELOG.md

@@ -10,6 +10,8 @@
 
 ### 💡 Others
 
+- Replace `require-from-string` and `sucrase` with `@expo/require-utils` ([#42884](https://github.com/expo/expo/pull/42884) by [@kitten](https://github.com/kitten))
+
 ## 55.0.4 — 2026-02-03
 
 ### 💡 Others