# RefOption.RefOption

A RefOption is a RefSubject specialized over an Option value.

## Signatures

```ts
export interface RefOption<in out A, in out E = never, out R = never> extends RefSubject.RefSubject<Option.Option<A>, E, R> {
}
```

## Why

Defines option state with the same current-read, pushed-update, and synchronized-write contract
as RefSubject.

## Ownership and lifetime

RefOption is a contract and performs no acquisition. Implementations retain the errors,
services, interruption, and Scope requirements expressed by its members.