str2arg.js

const minimist = require('minimist');

console.log(`text=${text}`)

// https://stackoverflow.com/questions/16261635/javascript-split-string-by-space-but-ignore-space-in-quotes-notice-not-to-spli#answer-46946490
const idxAt = text.indexOf(' ')
const arg = text
  .slice(idxAt + 1)
  .match(/\\?.|^$/g)
  .reduce((p, c) => {
    if(c === '"'){
        p.quote ^= 1;
    }else if(!p.quote && c === ' '){
        p.a.push('');
    }else{
        p.a[p.a.length-1] += c.replace(/\\(.)/,"$1");
    }
    return  p;
  },
  {a: ['']}
  ).a

console.log(`arg=${arg}`)

const conf = minimist(arg)
console.dir(conf)
\*
  {
    _:  ['mandabotao' ],
    o: 'pa',
    grande: 'com espaço'
  } 
*/