module.exports = function octdec(octString) {
  //  discuss at: https://locutus.io/php/octdec/
  // original by: Philippe Baumann
  //   example 1: octdec('77')
  //   returns 1: 63

  octString = (octString + '').replace(/[^0-7]/gi, '')
  return parseInt(octString, 8)
}