sub_state 2.0.0

A lightweight, type-safe state management helper for Dart and Flutter — model initial, loading, success and failure states with exhaustive pattern matching.

0.0.01

• initial release.

1.1.0

• add progress in loading

1.2.0

• add TError

2.0.0

• Rewritten on native Dart 3 sealed classes — sub_state is now a pure-Dart package you just add and import.
• State variants are now public (SubInitial, SubLoading, SubSuccess, SubFailure, and the Sub2…–Sub5… families), enabling native, exhaustive switch pattern matching.
• Added copyWith on the failure variants (previously only on success).
• Fix: SubState3.isFailure now correctly reports failures (it previously checked the wrong variant type and always returned false).
• Same public API as v1 (when, maybeWhen, whenOrNull, map, maybeMap, mapOrNull, the is* getters, dataOrNull / errorOrNull).
• Added a full test suite.