qw.js

const qw = (strings, ...expr) => { 
  let words = [];

  for (let i = 0; i < strings.length; i++) {
    // all the words in the string part
    let to_add = strings[i].split(/\s+/).filter(s => !!s);

    //the previous was an expression AND we don't have a space aftr:
    if (to_add.length && words.length && i > 0 && expr[i-1] && strings[i][0] !== ' ') {
      words[words.length - 1] += to_add.pop();
    }

    words.push(...to_add);

    if (expr[i]) {
      // the previous was a string ending in a space (or this is the first expression), push
      if (!words.length || strings[i].substr(-1) === ' ') {
        words.push(expr[i]);
      } else {
        // we want to append an expression to the string
        words[words.length - 1] += expr[i];
      }
    }
  }

  return words;
}

/*
let $totes_perl;

$totes_perl = qw`foo   bar baz`;

console.log($totes_perl);
*/

module.exports = qw;