function uploadHandleError()

in storage/upload-files.js [159:212]
39 lines of code
6 McCabe index (conditional complexity)

function uploadHandleError(file) {
  const storageRef = firebase.storage().ref();

  // [START storage_upload_handle_error]
  // Create the file metadata
  var metadata = {
    contentType: 'image/jpeg'
  };

  // Upload file and metadata to the object 'images/mountains.jpg'
  var uploadTask = storageRef.child('images/' + file.name).put(file, metadata);

  // Listen for state changes, errors, and completion of the upload.
  uploadTask.on(firebase.storage.TaskEvent.STATE_CHANGED, // or 'state_changed'
    (snapshot) => {
      // Get task progress, including the number of bytes uploaded and the total number of bytes to be uploaded
      var progress = (snapshot.bytesTransferred / snapshot.totalBytes) * 100;
      console.log('Upload is ' + progress + '% done');
      switch (snapshot.state) {
        case firebase.storage.TaskState.PAUSED: // or 'paused'
          console.log('Upload is paused');
          break;
        case firebase.storage.TaskState.RUNNING: // or 'running'
          console.log('Upload is running');
          break;
      }
    }, 
    (error) => {
      // A full list of error codes is available at
      // https://firebase.google.com/docs/storage/web/handle-errors
      switch (error.code) {
        case 'storage/unauthorized':
          // User doesn't have permission to access the object
          break;
        case 'storage/canceled':
          // User canceled the upload
          break;

        // ...

        case 'storage/unknown':
          // Unknown error occurred, inspect error.serverResponse
          break;
      }
    }, 
    () => {
      // Upload completed successfully, now we can get the download URL
      uploadTask.snapshot.ref.getDownloadURL().then((downloadURL) => {
        console.log('File available at', downloadURL);
      });
    }
  );
  // [END storage_upload_handle_error]
}