Modern-IDB

Modern IndexedDB wrapper with Promises, AsyncIterables and strict typing.

Motivation

IndexedDB API was available in browsers 3 years before Promises. Current event-based API is verbose and not as convenient to use in modern codebases as async/await.

Changes

1. IDBRequest<T> is converted to Promise<T> (except for IDBRequest<IDBCursor | IDBCursorWithValue>)
2. IDBTransaction<T> is extended with a promise: Promise<T> property to allow simpler async/await code.
3. .openCursor() and .openKeyCursor() return an AsyncIterable<Cursor | CursorWithValue>
4. openDatabase() has a generic to specify DB schema.
5. Automatic versioning and DB migrations with migrations argument of openDatabase()