function _snakeCase()

in lib/helper.js [199:224]

• 26 lines of code
• 9 McCabe index (conditional complexity)

function _snakeCase(str) {
  if (!str) {
    return '';
  }
  let res = '';
  let tmp = '';
  for (const c of str) {
    if (/[A-Z|0-9]/.test(c)) {
      tmp += c;
    } else {
      if (tmp.length > 0) {
        res += res === '' ? tmp.toLowerCase() : '_' + tmp.toLowerCase();
        tmp = '';
      }
      res += c;
    }
  }
  if (tmp.length > 0) {
    res += '_' + tmp.toLowerCase();
  }
  res = res.replace(/-/g, '_');
  if (res[0] === '_' && str[0] !== '_') {
    res = res.substring(1);
  }
  return res;
}