# computedFromService

Lifts an Effect-provided Computed into a Computed facade.

## Signatures

```ts
export declare function computedFromService<R, A, E, R2>(effect: Effect.Effect<Computed<A, E, R2>, never, R>): Computed<A, E, R | R2>;
```

## Why

Defers service lookup until each version read, current read, interruption, or Fx observation, so
callers can compose a Context-provided Computed without manually flat-mapping the service Effect.

## Ownership and lifetime

The facade caches neither the resolved Computed nor its value. Each operation runs the supplied
Effect, then delegates to the resolved Computed. Service requirements combine as `R | R2`, source
failures remain `E`, and the observing Scope owns the delegated subscription.