Logging output while running commander program

Question

I'm using commander.js to run a program that keeps Node running (watching for files and running tasks).

It seems like Commander is waiting until the command exits to log any output. Is there a way to log output to the console while the command is running?

import { program } from 'commander';
import chokidar from 'chokidar';

program
  .command('dev')
  .description('Start the development server')
  .action(async (options, command) => {
    // Doesn't get logged unless program exits
    console.log(`...`);
    chokidar.watch('...')
  });

// This also won't log until command is finished
process.stdout.write('...')

program.parse();

Answer 1

Commander does not modify the behaviour of console.log or process.stdout.write, so the problems with the delayed output are something other than Commander.

Note: you should be calling program.parseAsync() since you have an async action handler, but that isn't the solution to your problem.

(Disclaimer: I am a maintainer of Commander.)