Function detectPlatform

src/update/self-update.ts:28–52

()

export type Channel = 'stable' | 'latest' | string; // string = exact version tag

async function detectPlatform(): Promise<string> {
  const os = process.platform;
  const arch = process.arch;

  const osMap: Record<string, string> = { darwin: 'darwin', linux: 'linux' };
  const archMap: Record<string, string> = { x64: 'x64', arm64: 'arm64' };

  const mappedOs = osMap[os];
  const mappedArch = archMap[arch];

  if (!mappedOs || !mappedArch) {
    throw new CLIError(`Unsupported platform: ${os}/${arch}`, ExitCode.GENERAL);
  }

  // Detect musl on Linux
  if (mappedOs === 'linux') {
    try {
      const { execSync } = await import('child_process');
      const ldd = execSync('ldd /bin/ls 2>&1', { encoding: 'utf-8' });
      if (ldd.includes('musl')) return `linux-${mappedArch}-musl`;
    } catch { /* non-fatal */ }
  }

  return `${mappedOs}-${mappedArch}`;
}

async function ghFetch(path: string): Promise<Response> {
  const headers: Record<string, string> = {