Import
import { filterMap } from "@typed/fx/RefTrie";Signatures
export declare const filterMap: {
<V>(f: (value: V, key: string) => Option.Option<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) => Option.Option<V>): RefSubject.Computed<Trie.Trie<V>, E, R>;
};Why
Creates a read-only Computed trie that can transform or omit each entry; it leaves the writable source trie unchanged.
Ownership and lifetime
The filter 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.