[BUG] Binary loads `bin/claude.exe`

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Current @anthropic-ai/claude-code version (2.1.218) have the following line:

  "bin": {
    "claude": "bin/claude.exe"
  },

It tries to load the exe binary on every platform, which doesn't work on Linux and macOS.

What Should Happen?

If the following comment is true:

// Detects the platform, finds the matching native binary from optionalDependencies,
// and copies it over the bin/claude.exe placeholder. After this runs, `claude` execs
// the native binary directly — no Node.js process stays resident.

Then these platforms:

const PLATFORMS = {
  'darwin-arm64': { pkg: PACKAGE_PREFIX + '-darwin-arm64', bin: BINARY_NAME },
  'darwin-x64': { pkg: PACKAGE_PREFIX + '-darwin-x64', bin: BINARY_NAME },
  'linux-x64': { pkg: PACKAGE_PREFIX + '-linux-x64', bin: BINARY_NAME },
  'linux-arm64': { pkg: PACKAGE_PREFIX + '-linux-arm64', bin: BINARY_NAME },
  'linux-x64-musl': {
    pkg: PACKAGE_PREFIX + '-linux-x64-musl',
    bin: BINARY_NAME,
  },
  'linux-arm64-musl': {
    pkg: PACKAGE_PREFIX + '-linux-arm64-musl',
    bin: BINARY_NAME,
  },
  'linux-arm64-android': {
    pkg: PACKAGE_PREFIX + '-linux-arm64-android',
    bin: BINARY_NAME,
  },
  'linux-x64-android': {
    pkg: PACKAGE_PREFIX + '-linux-x64-android',
    bin: BINARY_NAME,
  },
  'win32-x64': {
    pkg: PACKAGE_PREFIX + '-win32-x64',
    bin: BINARY_NAME + '.exe',
  },
  'win32-arm64': {
    pkg: PACKAGE_PREFIX + '-win32-arm64',
    bin: BINARY_NAME + '.exe',
  },
}

Should all have + '.exe'.

Error Messages/Logs

node:internal/modules/esm/get_format:243
  throw new ERR_UNKNOWN_FILE_EXTENSION(ext, filepath);
        ^

TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".exe" for /var/home/nexus/.cache/aube/virtual-store/@anthropic-ai+claude-code@2.1.218-86cc59cf7d6347bb/node_modules/@anthropic-ai/claude-code/bin/claude.exe
    at Object.getFileProtocolModuleFormat [as file:] (node:internal/modules/esm/get_format:243:9)
    at defaultGetFormat (node:internal/modules/esm/get_format:283:36)
    at defaultLoadSync (node:internal/modules/esm/load:161:16)
    at #loadAndMaybeBlockOnLoaderThread (node:internal/modules/esm/loader:809:12)
    at #loadSync (node:internal/modules/esm/loader:841:53)
    at ModuleLoader.load (node:internal/modules/esm/loader:790:26)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:501:31)
    at #getOrCreateModuleJobAfterResolve (node:internal/modules/esm/loader:567:36)
    at afterResolve (node:internal/modules/esm/loader:614:52)
    at ModuleLoader.getOrCreateModuleJob (node:internal/modules/esm/loader:620:12) {
  code: 'ERR_UNKNOWN_FILE_EXTENSION'
}

Node.js v26.5.0

Steps to Reproduce

npm install -g @anthropic-ai/claude-code
claude

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.112

Claude Code Version

2.1.206

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Non-interactive/CI environment

Additional Information

Relevant issue that was ignored:

• https://github.com/anthropics/claude-code/issues/52107
• https://github.com/anthropics/claude-code/issues/72669