Function installOrUpdateClaudePackage

src/utils/localInstaller.ts:97–138

(
  channel: ReleaseChannel,
  specificVersion?: string | null,
)

 * @param specificVersion - Optional specific version to install (overrides channel)
 */
export async function installOrUpdateClaudePackage(
  channel: ReleaseChannel,
  specificVersion?: string | null,
): Promise<'in_progress' | 'success' | 'install_failed'> {
  try {
    // First ensure the environment is set up
    if (!(await ensureLocalPackageEnvironment())) {
      return 'install_failed'
    }

    // Use specific version if provided, otherwise use channel tag
    const versionSpec = specificVersion
      ? specificVersion
      : channel === 'stable'
        ? 'stable'
        : 'latest'
    const result = await execFileNoThrowWithCwd(
      'npm',
      ['install', `${MACRO.PACKAGE_URL}@${versionSpec}`],
      { cwd: getLocalInstallDir(), maxBuffer: 1000000 },
    )

    if (result.code !== 0) {
      const error = new Error(
        `Failed to install Claude CLI package: ${result.stderr}`,
      )
      logError(error)
      return result.code === 190 ? 'in_progress' : 'install_failed'
    }

    // Set installMethod to 'local' to prevent npm permission warnings
    saveGlobalConfig(current => ({
      ...current,
      installMethod: 'local',
    }))

    return 'success'
  } catch (error) {
    logError(error)
    return 'install_failed'
  }
}

/**
 * Check if local installation exists.