https://quizfreely.org/docs/idb-api-layer
Quizfreely's IDB API Layer lets Quizfreely's web-app's frontend code interact with IndexedDB similar to how Quizfreely's backend API (Codeberg, GitHub) lets frontend code interact with Quizfreely's database on our server.
It's a client-side JavaScript API for storing & interacting with users' local studysets & data.
The API Layer uses IndexedDB with Dexie.js.