/**
 * @license
 * Copyright 2024 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { EditHistory, EditHistoryController, EditHistoryCreator, EditHistoryEntry, GraphDescriptor } from "@breadboard-ai/types";
export declare class GraphEditHistory implements EditHistory {
    #private;
    constructor(controller: EditHistoryController);
    add(graph: GraphDescriptor, label: string, creator: EditHistoryCreator, timestamp: number): void;
    revertTo(newIndex: number): EditHistoryEntry;
    canUndo(): boolean;
    canRedo(): boolean;
    undo(): GraphDescriptor | null;
    redo(): GraphDescriptor | null;
    jump(newIndex: number): GraphDescriptor | null;
    entries(): EditHistoryEntry[];
    index(): number;
    current(): GraphDescriptor | null;
    get pending(): EditHistoryEntry | undefined;
}
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