Import
import { flatMap } from "@typed/fx/RefOption";Signatures
export declare const flatMap: {
<A, B>(f: (a: A) => Option.Option<B>): <E, R>(ref: RefOption<A, E, R>) => RefSubject.Computed<Option.Option<B>, E, R>;
<A, E, R, B>(ref: RefOption<A, E, R>, f: (a: A) => Option.Option<B>): RefSubject.Computed<Option.Option<B>, E, R>;
};Why
Projects the optional value with Option.flatMap for both a current read and later source
pushes; it never changes the RefOption itself.
Ownership and lifetime
The flat map view retains no independent state. An Effect read samples the source once; Fx observation follows later pushes and its observing Scope owns subscription cleanup.
Other public imports
These import paths expose the same declaration. Each page retains its own public name and signature.