variable / @typed/fx/RefTrie

map

Map values into a read-only derived trie.

Package version
2.0.0-beta.7
Category
State updates
Since
1.18.0

Import

import { map } from "@typed/fx/RefTrie";

Signatures

export declare const map: {
    <V>(f: (value: V, key: string) => V): <E, R>(ref: RefTrie<V, E, R>) => RefSubject.Computed<Trie.Trie<V>, E, R>;
    <V, E, R>(ref: RefTrie<V, E, R>, f: (value: V, key: string) => V): RefSubject.Computed<Trie.Trie<V>, E, R>;
};

Why

Creates a read-only Computed trie whose values are mapped for current reads and every later source push; it does not modify the RefTrie.

Ownership and lifetime

The 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.

Source