gistfile1.txt

function isomorphicString(str1, str2){
  if(str1.length == str2.length){
    var newMap = new Map();
    for(let i=0; i< str1.length; i++){
      let newKey = str1[i].toString();
      console.log(newKey)
      let mapValue = newMap.newKey;
      if(mapValue){
        console.log(mapValue)
          if(mapValue == str2[i]){
            continue;
          }else{
            console.log('Strings are not isomorphic!')
            return false
          }
      }else{
          newMap.str1[i] = str2[i];
      }
    }
  }else{
    console.log('Strings are not isomorphic!')
    return false
  }
}

isomorphicString('egg', 'add')