I've seen a post on how to create a Map in the Firebase console for the realtime database, but how do you create a Map (in order to create a mutable/queryable list structure) in Firebase from the console? This is in order to create dummy data without doing so from the client.
Firestore documents are essentially JSON, and JSON doesn't have a native map data type. The most direct mapping is to create a JSON object:
Now you can add the keys and values under the new field.