Firebase Storage example

firebase-storage.ts

// Create a reference to Firebase Storage
this.driverProfilePictureRef = firebase.storage().ref('/driverProfilePicture/');

// Upload the picture to Firebase Storage
const uploadPicture = this.driverProfilePictureRef.child("driver's id")
  .child('profilePicture.png').putString(pictureInBase64StringHere, 'base64', {contentType: 'image/png'});

// After the picture successfully uploads, you'll want to add that picture's url to the drivers node

uploadPicture.then( profilePicture => {
  firebase.database().ref("path to the drivers node").child("driver id").child('profilePicture')
    .set(profilePicture.downloadURL);
  });        
}

// Then you can use it in the html
<img [src]="driver.profilePicture" />
// This assuming that driver is the driver object