1. Dart
2. dart:html
3. ServiceWorkerGlobalScope
4. onActivate property

ServiceWorkerGlobalScope class

1. Properties
2. clients
3. onActivate
4. onFetch
5. onForeignfetch
6. onInstall
7. onMessage
8. registration
9. addressSpace
10. caches
11. crypto
12. hashCode
13. indexedDB
14. isSecureContext
15. location
16. navigator
17. on
18. onError
19. origin
20. performance
21. runtimeType
22. self
23. Methods
24. skipWaiting
25. addEventListener
26. atob
27. btoa
28. dispatchEvent
29. fetch
30. importScripts
31. noSuchMethod
32. removeEventListener
33. toString
34. Operators
35. operator ==
36. Static properties
37. instance
38. Constants
39. activateEvent
40. fetchEvent
41. foreignfetchEvent
42. installEvent
43. messageEvent

Stream<Event> get onActivate => activateEvent.forTarget(this);