persist and hydrate < A Behavior Subject for Flutter with automatic > 1

persist and hydrate

hydrated provides a behaviorsubject that automatically persists to flutter’s local storage and hydrates on creation!

easy to consume

all values are persisted with shared_preferences and restored with automatic hydration.

final count$ = hydratedsubject<int>("count", seedvalue: 0);

/// count$ will automagically be hydrated with 42 next time it is created
count$.add(42);

ready for bloc

class hydratedbloc {
  final _count$ = hydratedsubject<int>("count", seedvalue: 0);

  valueobservable<int> get count$ => _count$.stream;
  sink<int> get setcount => _count$.sink;

  dispose() {
    _count$.close();
  }
}

supports simple types and serialized classes

we support all shared_preferences types.

• int
• double
• bool
• string
• list<string>

final count$ = hydratedsubject<int>("count");

we also support serialized classes with hydrate and persist arguments.

final user$ = hydratedsubject<user>(
  "user",
  hydrate: (string s) => user.fromjson(s),
  persist: (user user) => user.tojson(),
);

reliable

hydrated is mock tested with all supported types and is dogfooded by its creator.

demo