Safari versions below 8

• No support for indexedDB
• There’s a shim that builds indexedDB support on top of WebSQL: IndexedDBShim.

Safari version 8.x

• Native support for indexedDB but has lots of issues:
  1. Transactions can only target a single object store at a time.
  2. Primary keys must be unique across different objects stores.
  3. Compound indexes or primary keys are not supported.
  4. MultiEntry indexes not supported.

Safari version >= 10.1

Native support for IndexedDB 2.0. Lots of issues solved and performance boosted. For the most stable Safari support, use Dexie 3.0 (npm install dexie@latest). It works around the most major Safari issue and it continuously runs its unit tests on Safari browsers in browserstack for every commit.

A list of Safari related issues that has been reported can be found here

Chrome and Opera on IOS

Due to Apples restricted policies for iOS, Chrome and Opera running on iOS is actually a Safari browser in the backend pretending to be Chrome or Opera. Thus, it’s IndexedDB is actually provided by Safari even on Chrome, Opera or Firefox, see issue #110.

If your application must target iPhone 6 or below, it is recommended to include the indexedDB shim before requiring/including Dexie.js. iPhone 7 users will have a Safari engine of version >= 10.3.