[js] extract numbers from text

gistfile1.txt

// converts '7-foo me, 30-boo me, 30-baz me' to '7,30,30'
function serialize(text) {
  return text.replace(/[^\d,]/g, '');
}

// converts  '7,30,30' to '7-foo me, 30-boo me, 30-baz me'
function humanize(text) {
 const words = [
   '-foo',
   '-boo',
   '-baz',
 ];
  
 arr = text.split(',');
 arr.forEach((el, i) => arr[i] = el + words[i]);
 return arr.join(', ');
}