exec

const spawn = require('child_process').spawn;
// const exec = require('child_process').execSync;

const exec = function (cmd, args) {
  return new Promise(function (resolve) {
    const execution = spawn(cmd, args);
    execution.stdout.on('data', (data) => {
      var str = data.toString();
      var lines = str.split(/(\r?\n)/g);
      for (var i = 0; i < lines.length; i++) {
        if (lines[i].trim()) {
          console.log(lines[i]);
        }
      }
    });
    execution.stderr.on('data', (data) => {
      var str = data.toString();
      var lines = str.split(/(\r?\n)/g);
      for (var i = 0; i < lines.length; i++) {
        if (lines[i].trim()) {
          console.log('[Error]: ' + lines[i]);
        }
      }
    });
    execution.on('close', (code) => {
      resolve();
    });
  });
};