Dexie also supports queuing operations, meaning you can start using the database directly after having defined it. In case open() hasn’t been called, it will open it automatically and enqueue the operation to execute as soon as the database is finished opening. If open fails, queued operations will immediately fail with the error event from the open request.

Notice also that you don’t need to care for whether the database has been created or not. It all be created automatically first time use. You always define your schema and let the runtime decide whether to use that definition for creating the database or just for populating the table properties onto your db instance.