| 1234567891011121314151617181920212223 | const numeric = /^[0-9]+$/const compareIdentifiers = (a, b) => {  const anum = numeric.test(a)  const bnum = numeric.test(b)  if (anum && bnum) {    a = +a    b = +b  }  return a === b ? 0    : (anum && !bnum) ? -1    : (bnum && !anum) ? 1    : a < b ? -1    : 1}const rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)module.exports = {  compareIdentifiers,  rcompareIdentifiers,}
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