fetch(REQUEST_URL, {
      method: 'get',
      dataType: 'json',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      }
    })
    .then((response) =>
      {
        response.json() // << This is the problem
      })
    .then((responseData) => { // responseData = undefined

        console.log(responseData);
     });
     }).catch(function(err) {
        console.log(err);
      })
     .done();

JSON.parse(response._bodyText)

.then(response => response.json())
    .then(response => {

    console.log(response);

var makeRequest = function(){

    fetch('https://jsonplaceholder.typicode.com/posts/1', {
        method: 'get',
        dataType: 'jsonp',
        headers: {
           'Accept': 'application/json',
           'Content-Type': 'application/json'
        }
    })
    .then((response) => {
       return response.json() // << This is the problem
    })
    .then((responseData) => { // responseData = undefined
        addTestToPage(responseData.title);
        return responseData;
    })
  .catch(function(err) {
      console.log(err);
  })
}

function addTestToPage(textToAdd){
   var para = document.createElement("p");
   var node = document.createTextNode(textToAdd);
   para.appendChild(node);

  var element = document.getElementsByTagName("body")[0];
  element.appendChild(para);
}

makeRequest();

fetch('http://localhost:3001/questions', {
        method: 'GET',
        headers: {
        "Accept": "application/json",
        'Content-Type': 'application/json'
        }
    })
    .then(response => { return response.json();})
    .then(responseData => {console.log(responseData); return responseData;})
    .then(data => {this.setState({"questions" : data});})

    .catch(err => {
        console.log("fetch error" + err);
    });
}

.then(response => {
 console.log(response.main);
 this.setState({
   weather: ((response.main.temp * (9/5))-459.67).toFixed(0),
   humidity:((response.main.humidity * (9/5))-459.67).toFixed(0)
 })