# RefSubjectStore

A native writable whose transactional writes settle with typed Exit results.

## Signatures

```ts
export interface RefSubjectStore<A, E, Initial = undefined> extends Readable<A | Initial> {
    readonly state: AsyncState<A, E>;
    readonly set: (value: A) => Promise<Exit.Exit<A, E>>;
    readonly update: (f: (value: A) => A) => Promise<Exit.Exit<A, E>>;
}
```