variable / @typed/fx

RefGraph.hasNode

Check if a node exists.

Package version
2.0.0-beta.13
Category
State predicates
Since
1.18.0
Member of
RefGraph

Import

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

Access RefGraph.hasNode through the imported RefGraph 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 hasNode: {
    (nodeIndex: Graph.NodeIndex): <N, E, T extends Graph.Kind, Err, R>(ref: RefGraph<N, E, T, Err, R>) => RefSubject.Computed<boolean, Err, R>;
    <N, E, T extends Graph.Kind, Err, R>(ref: RefGraph<N, E, T, Err, R>, nodeIndex: Graph.NodeIndex): RefSubject.Computed<boolean, Err, R>;
};

Why

Makes has node a live projection of the graph; consumers can sample it now or observe it without copying the source state.

Ownership and lifetime

The has node 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