# mapEffect

Transform a Versioned's output value as both an Fx and Effect using an Effect.

## Signatures

```ts
export declare const mapEffect: {
    <A, C, E3, R3, B, D, E4, R4>(options: {
        onFx: (a: A) => Effect.Effect<C, E3, R3>;
        onEffect: (b: B) => Effect.Effect<D, E4, R4>;
    }): <R0, E0, R, E, R2, E2>(versioned: Versioned<R0, E0, A, E, R, B, E2, R2>) => Versioned<never, never, C, E | E3, R | R3, D, E0 | E2 | E4, R0 | R2 | R4>;
    <R0, E0, A, E, R, B, E2, R2, C, E3, R3, D, E4, R4>(versioned: Versioned<R0, E0, A, E, R, B, E2, R2>, options: {
        onFx: (a: A) => Effect.Effect<C, E3, R3>;
        onEffect: (b: B) => Effect.Effect<D, E4, R4>;
    }): Versioned<never, never, C, E | E3, R | R3, D, E0 | E2 | E4, R0 | R2 | R4>;
};
```

## Why

Allows pushed and sampled projections to require services or fail, and exposes those additions
in the corresponding output channels.

## Ownership and lifetime

No subscription starts during transformation. Callback effects run when their push or read
channel is consumed and are interrupted with that consumer.