1. Dart
2. dart:html
3. WorkerGlobalScope
4. btoa method

WorkerGlobalScope class

1. Properties
2. addressSpace
3. caches
4. crypto
5. indexedDB
6. isSecureContext
7. location
8. navigator
9. onError
10. origin
11. performance
12. self
13. hashCode
14. on
15. runtimeType
16. Methods
17. atob
18. btoa
19. fetch
20. importScripts
21. addEventListener
22. dispatchEvent
23. noSuchMethod
24. removeEventListener
25. toString
26. Operators
27. operator ==
28. Static properties
29. instance
30. Constants
31. errorEvent

String btoa(String btoa) native;