title: Save Firebase - Firestore Database to JSON or CSV?
body: <p>I created a react-app for a study, where I save many different datas on a Firestore database.
  Now that the study is over, I want to save those datas as a json or better as a .csv-file.</p>
  <p>Is there an easy way to get this done? I searched for a solution, but somehow couldnt find anything...</p>