variable / @typed/fx

RefTrie.map

Map values into a read-only derived trie.

Package version
2.0.0-beta.13
Category
State updates
Since
1.18.0
Member of
RefTrie

Import

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

Access RefTrie.map through the imported RefTrie export. Its declaration below describes the member.

This public exposure is a re-export. Its import path is supported; declaration documentation is shared with the other public exposures below.

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