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variable / @typed/fx

RefIterable.filterMap

Filter and map values in place.

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

Import

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

Access RefIterable.filterMap through the imported RefIterable 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 filterMap: {
    <A>(f: (a: A, index: number) => Option.Option<A>): <E, R>(ref: RefIterable<A, E, R>) => Effect.Effect<Iterable<A>, E, R>;
    <A, E, R>(ref: RefIterable<A, E, R>, f: (a: A, index: number) => Option.Option<A>): Effect.Effect<Iterable<A>, E, R>;
};

Why

Applies filterMap to the committed Iterable through RefSubject.update and publishes one coherent replacement; this is a mutation, not a read-only Computed projection.

Ownership and lifetime

The Effect starts when run, participates in the source ref’s serialized update boundary, and acquires no resource. It returns the committed Iterable and retains the ref’s E and R channels.

Other public imports

These import paths expose the same declaration. Each page retains its own public name and signature.

Source