Expo and uploading image Blobs?

Expo SDK
49

To get around this, I ended up just uploading the base64 as a raw string to firebaase, and when I need the data, I just initiate a fetch request, from the url returned by the firebase getDownloadURL() method. You can also attach meta data when uploading raw. Please see below for an example:

/* 
 * 
  Retrieves the requestedbase64
 *
 */

 //Gets the download url of the image requested, and returned as a promise
   this._imageDownloadPath.child('Imag2').getDownloadURL()
   .then( (url) => { 
      fetch(url)
      .then( (response) =>{
        //return response object
        return response
      })
      .then( (res) => {
        //Sets the state to the base64 of the image requested, so it can be displayed 
        this.setState({img: res._bodyInit})
      });
    })

/*
 *
 Uploads the base64 to firebase as a raw string
 *
 */
   upload = async () => {
      let result = await ImagePicker.launchImageLibraryAsync({
        allowsEditing: true,
        aspect: [4, 3],
        base64: true
      });
      if (!result.cancelled) {
        try{
        var metadata = {
          contentType: 'image/png',
          customMetadata: {
            'location': 'Egypt'
          }
        };
        //Concat the image type to the base64 data
        let message = 'data:image/png;base64, '+ result.base64;

        //Uploads the base64 to firebase as a raw string, with the specified metadata
        this._imageUploadPath.child('Imag2').putString(message,"raw",metadata).then( () => console.log("done")).catch( (err) => console.log(err) ) ;
        this.setState({ images: result.uri });
      }
      catch(err){
        console.log(err);
      }