title: React native and Firebase database doesnt map function
body: <p>I have been working for a long time in object parse, this object from Firebase but I can't parse, pls help me how can I do?</p>
  
  <pre><code>{
     "user" : {
         "qweqwe1231" : {
             "-LKmfJ8X9FtL75-03yBf" : {
             "gonderilenkisi":"asdasdad",
             "gonderimzamani":"3123",
             "metin":"dqweqweqe",
             "okundumu":0
         },
         "-LKmgiBm8EB7LFDeOGbH" : {
             "gonderilenkisi":"asdasdad",
             "gonderimzamani":"3123",
             "metin":"dqweqweqe",
             "okundumu":0
         }
     }
  }
  </code></pre>
  
  <p>I get data like this</p>
  
  <pre><code>firebase.database().ref().child('user').child('qweqwe1231').on('value', 
       (data)=&gt;{
           console.log(data.val())
  
  });
  </code></pre>
  
  <p>And I use to map function but I get an error message "map is not a function"</p>
  
  <pre><code>firebase.database().ref().child('user').child('qweqwe1231').on('value', 
       (data)=&gt;{
           data.val().map((item)=&gt;{ console.log(item.gonderilenkisi)})
  
  });
  </code></pre>