Function detectRootFolder

cli/src/utils/project-detection.ts:228–245

(targetPath: string)

 * For React Native CLI, it could be 'src' or the root
 */
export async function detectRootFolder(targetPath: string): Promise<string> {
  // Check for common folders in order of preference
  const possibleRoots = ["app", "src"];

  for (const root of possibleRoots) {
    const rootPath = path.join(targetPath, root);
    if (await fs.pathExists(rootPath)) {
      const stats = await fs.stat(rootPath);
      if (stats.isDirectory()) {
        return root;
      }
    }
  }

  // Default fallback to 'app' for Expo projects or '.' for others
  const isExpoProject = await isExpo(targetPath);
  return isExpoProject ? "app" : ".";
}