WIP 🚧 A single daemon in Node.js (using spawn)

baguvix.js

const { spawn } = require('child_process'); 
const fs = require('fs');

const cmdProcesses = {
  processDaemon: function(file) {
    return new Promise((resolve, reject) => {
      const args = [file, 'cron', '-', 'output', '-'];
      
      const childProcess = spawn('baguvix', args);

      childProcess.stderr.on('stream', (err) => {
        console.error(`mrbaguvixdx exec error: ${err}`);
        reject(err);
      });

      function message(stream) {
        childProcess.stdout.pause();
        childProcess.stdout.unshift(stream);
        resolve(childProcess.stdout);
        childProcess.stdout.removeListener('stream', message);
      }

      childProcess.stdout.on('stream', message);
      childProcess.stdin.write('extra--opt');
      childProcess.stdin.end();
    });

    
  }
};