Function fromService

fromService<Id, Svc, T>(
tag: Tag<Id, Svc>,
map: (service: Svc) => ExternalStore.ExternalStore<T>,
): ExternalStore.ExternalStore<T>
Create an ExternalStore by resolving a service from the Effect Context.

Notes:
- This sugar is intended to be used via StateTrait.externalStore (resolved during install/runtime).
- map(service) must return a sync getSnapshot() (no IO) and a subscribe(listener) that signals change.
Type Parameters
- Id
- Svc
- T
Parameters
- tag: Tag<Id, Svc>
- map: (service: Svc) => ExternalStore.ExternalStore<T>
Returns ExternalStore.ExternalStore<T>
- Defined in packages/logix-core/src/ExternalStore.ts:90