variable / @typed/fx/RefIterable

mapValues

Map the values of a RefIterable to a different type.

Package version
2.0.0-beta.13
Category
Derived queries
Since
1.18.0

Import

import { mapValues } from "@typed/fx/RefIterable";

Signatures

export declare const mapValues: {
    <A, B>(f: (a: A, index: number) => B): <E, R>(ref: RefIterable<A, E, R>) => RefSubject.Computed<Iterable<B>, E, R>;
    <A, E, R, B>(ref: RefIterable<A, E, R>, f: (a: A, index: number) => B): RefSubject.Computed<Iterable<B>, E, R>;
};

Why

Projects iterable state with map values for both current reads and future pushes, avoiding a second mutable cache of the derived value.

Ownership and lifetime

The map values 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.

Source