module.exports = function downcase(str) {
  // parity verified: Ruby 3.3
  //      discuss at: https://locutus.io/ruby/String/downcase/
  //     original by: Kevin van Zonneveld (https://kvz.io)
  //          note 1: Returns a copy of str with all uppercase letters replaced with lowercase.
  //       example 1: downcase('hELLo')
  //       returns 1: 'hello'

  return (str + '').toLowerCase()
}