Import
import { pick } from "@typed/fx/RefStruct";Signatures
export declare const pick: {
<S extends object, const Keys extends ReadonlyArray<keyof S>>(keys: Keys): <E, R>(ref: RefStruct<S, E, R>) => RefSubject.Computed<Pick<S, Keys[number]>, E, R>;
<S extends object, const Keys extends ReadonlyArray<keyof S>, E, R>(ref: RefStruct<S, E, R>, keys: Keys): RefSubject.Computed<Pick<S, Keys[number]>, E, R>;
};Why
Projects struct state with pick for both current reads and future pushes, avoiding a second mutable cache of the derived value.
Ownership and lifetime
The pick 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.