Quick example of uploading and retrieving images from Firebase storage.

firebase-storage.ts

// You create a reference for the picture:

this.profilePictureRef.child(newGuest.key).child('profilePicture.png')

  // Then you upload it:
  .putString(guestPicture, 'base64', {contentType: 'image/png'})
  // Since it returns a promise, you save the downloadURL somewhere to use later:
    .then((savedPicture) => {
      this.eventList.child(eventId).child('guestList').child(newGuest.key).child('profilePicture')
      .set(savedPicture.downloadURL);
  });


// When you're going to use it you'll just need to retrieve that download URL and use it inside 
// the `src` property of the `<img />` tag

`<img [src]="profilePicture" />`