Function cleanup

packages/cli/src/commands/dev/dev.ts:237–276

(reason: string | number)

  let cleanupInProgress = false;
  const cleanup = async (reason: string | number) => {
    if (cleanupInProgress) return;
    cleanupInProgress = true;

    output.debug(
      typeof reason === 'number'
        ? `Exiting with code ${reason}, shutting down...`
        : `Received ${reason}, shutting down...`
    );

    clearTimeout(timeout);
    controller.abort();

    if (lockAcquired) {
      releaseDevLock(cwd);
    }

    await devServer.stop();

    let exitCode: number;
    if (typeof reason === 'number') {
      exitCode = reason;
    } else {
      switch (reason) {
        case 'SIGINT':
          exitCode = 130;
          break;
        case 'SIGTERM':
          exitCode = 143;
          break;
        case 'SIGHUP':
          exitCode = 129;
          break;
        default:
          exitCode = 0;
      }
    }

    process.exit(exitCode);
  };

  process.on('SIGTERM', async () => await cleanup('SIGTERM'));
  process.on('SIGINT', async () => await cleanup('SIGINT'));