/**
 * Copyright 2025 The Artinet Project
 * SPDX-License-Identifier: Apache-2.0
 */
import { A2A } from "../../../types/index.js";
export declare function updateArtifact(_artifact: A2A.Artifact, update: A2A.TaskArtifactUpdateEvent): A2A.Artifact;
export declare function upsertArtifact(artifacts: A2A.Artifact[], update: A2A.TaskArtifactUpdateEvent): A2A.Artifact[];