1. Dart
2. dart:indexed_db
3. ObserverCallback typedef

##### dart:indexed_db library

1. Classes
2. Cursor
3. CursorWithValue
4. Database
5. IdbFactory
6. Index
7. KeyRange
8. ObjectStore
9. Observation
10. Observer
11. ObserverChanges
12. OpenDBRequest
13. Request
14. Transaction
15. VersionChangeEvent
16. Typedefs
17. ObserverCallback

description

# ObserverCallback typedef Null safety

void ObserverCallback (

1. ObserverChanges changes

)

## Implementation

    typedef void ObserverCallback(ObserverChanges changes);