Function isCommandAvailable

src/node/utils/commandDiscovery.ts:29–52

(command: string)

 * First checks macOS-specific paths for known apps, then falls back to `which`.
 */
export async function isCommandAvailable(command: string): Promise<boolean> {
  // Check known paths for macOS apps
  if (process.platform === "darwin" && command in MACOS_APP_PATHS) {
    for (const appPath of MACOS_APP_PATHS[command]) {
      try {
        const stats = await fs.stat(appPath);
        // Check if it's a file and any executable bit is set
        if (stats.isFile() && (stats.mode & 0o111) !== 0) {
          return true;
        }
      } catch {
        // Try next path
      }
    }
  }

  // Fall back to which (inherits enriched PATH from process.env)
  try {
    const result = spawnSync("which", [command], { encoding: "utf8" });
    return result.status === 0;
  } catch {
    return false;
  }
}

/**
 * Find the first available command from a list of candidates.