Function detectBuildConfig

src/lib/build-detector.ts:146–194

(sessionId: string)

 * Auto-detect build configuration from package.json
 */
export async function detectBuildConfig(sessionId: string): Promise<BuildConfig> {
  try {
    logger.info('Detecting build configuration', { sessionId });

    // Read package.json
    const packageJsonContent = await readFile(sessionId, '/workspace/package.json');
    const packageJson: PackageJson = JSON.parse(packageJsonContent);

    // Detect framework
    const framework = detectFramework(packageJson);
    logger.info('Framework detected', { framework });

    // Detect package manager
    const packageManager = await detectPackageManager(sessionId);
    logger.info('Package manager detected', { packageManager });

    // Detect commands
    const devScriptName = detectDevCommand(framework, packageJson.scripts);
    const buildScriptName = detectBuildCommand(packageJson.scripts);
    const defaultPort = detectDefaultPort(framework, packageJson.scripts);

    const buildConfig: BuildConfig = {
      framework,
      packageManager,
      installCommand: packageManager === 'npm' ? 'npm install'
        : packageManager === 'pnpm' ? 'pnpm install'
        : 'yarn install',
      buildCommand: buildScriptName
        ? `${packageManager} run ${buildScriptName}`
        : undefined,
      devCommand: `${packageManager} run ${devScriptName}`,
      defaultPort,
    };

    logger.info('Build configuration detected', buildConfig);
    return buildConfig;
  } catch (error) {
    logger.error('Failed to detect build configuration', { sessionId, error });

    // Return sensible defaults
    return {
      framework: 'Unknown',
      packageManager: 'npm',
      installCommand: 'npm install',
      devCommand: 'npm run dev',
      defaultPort: 3000,
    };
  }
}