variable / @typed/fx/RefTuple

appendElement

Append an element to the end of the current state of a RefTuple.

Package version
2.0.0-beta.7
Category
Derived queries
Since
1.18.0

Import

import { appendElement } from "@typed/fx/RefTuple";

Signatures

export declare const appendElement: {
    <E>(element: E): <T extends ReadonlyArray<unknown>, Err, R>(ref: RefTuple<T, Err, R>) => RefSubject.Computed<[
        ...T,
        E
    ], Err, R>;
    <T extends ReadonlyArray<unknown>, E, Err, R>(ref: RefTuple<T, Err, R>, element: E): RefSubject.Computed<[
        ...T,
        E
    ], Err, R>;
};

Why

Expresses append element as one ordered tuple transition; readers never observe the intermediate collection used to build the result.

Ownership and lifetime

The append element 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