# genScoped

Builds an Fx with a subscription-owned Scope shared by setup and streaming.

## Signatures

```ts
export declare const genScoped: <Yield extends Effect.Effect<any, any, any>, Return extends Fx.Any>(f: () => Generator<Yield, Return, any>) => Fx<Fx.Success<Return>, Fx.Error<Return> | ([
    Yield
] extends [
    never
] ? never : Effect.Error<Yield>), Exclude<Fx.Services<Return> | ([
    Yield
] extends [
    never
] ? never : Effect.Services<Yield>), Scope.Scope>>;
```

## Why

Resourceful setup must remain alive while the returned producer runs and be
released when that subscription ends. `genScoped` supplies that exact
acquisition-to-stream lifetime while removing `Scope` from the public
service requirement.

## Ownership and lifetime

Every subscription creates one child Scope, runs the generator inside it,
then runs the returned Fx in the same Scope. Normal completion, failure,
defect, or interruption closes the Scope and its finalizers. Setup failures
prevent streaming; all non-Scope errors and services remain in the result.

## Examples

```ts
import { Effect } from "effect"
import { genScoped } from "@typed/fx/Fx"
import { succeed } from "@typed/fx/Fx"

const resourceful = genScoped(function* () {
  const handle = yield* Effect.acquireRelease(
    Effect.succeed({ open: true }),
    () => Effect.void
  )
  return succeed(handle.open)
})
```