variable / @typed/fx/RefGraph

findEdge

Find an edge matching a predicate.

Package version
2.0.0-beta.13
Category
Optional queries
Since
1.18.0

Import

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

Signatures

export declare const findEdge: {
    <E>(predicate: (edge: E) => boolean): <N, T extends Graph.Kind, Err, R>(ref: RefGraph<N, E, T, Err, R>) => RefSubject.Filtered<Graph.EdgeIndex, Err, R>;
    <N, E, T extends Graph.Kind, Err, R>(ref: RefGraph<N, E, T, Err, R>, predicate: (edge: E) => boolean): RefSubject.Filtered<Graph.EdgeIndex, Err, R>;
};

Why

Models the possibly absent result of find edge as Filtered state, so absence stays explicit while later source versions can make a value available.

Ownership and lifetime

The find edge view retains no independent value. Its Effect read fails with NoSuchElement while absent; the observing Scope owns and finalizes its Fx subscription.

Other public imports

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

Source