text: module.exports =   class DnaTranscriber {
  toRna(text){
    let dna2rna = {
      C: 'G',
      G: 'C',
      T: 'A',
      A: 'U'
    }
    const value = text.split('').map(x => dna2rna[x]).join('')
    return value
  }
  }
  //let dnaTranscriber = new DnaTranscriber()
  //console.log(dnaTranscriber.toRna('C'))
  