dist/util.js
function underscore(s) {
  return typeof s === 'string' ? s.replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase() : s;
}
function underscore(s) {
  return typeof s === 'string' ? s.replace(/([a-z\d])([A-Z]+)/g, '$1_$2').replace(/[-\s]+/g, '_').toLowerCase() : s;
}
Public: Converts the given string to under_score_case.