# Fx.ToStreamOptions

Buffering and callback options accepted while adapting an `Fx` to an Effect `Stream`.

## Signatures

```ts
export type ToStreamOptions = Parameters<typeof Stream.callback<unknown, unknown, unknown>>[1];
```

## Why

The adapter exposes Effect Stream's own callback policy instead of inventing a
second buffering vocabulary.

## Ownership and lifetime

This type alias owns no queue or subscription. The selected policy takes effect
only when the resulting Stream is run.