/**
 * @license
 * Copyright 2024 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { AffectedNode, ChangeEventType, ErrorRejection, GraphChangeEvent, GraphChangeRejectEvent, GraphDescriptor, GraphIdentifier, NoChangeRejection, NodeIdentifier } from "@breadboard-ai/types";
/**
 * This event is dispatched whenever the graph changes due to edits.
 */
export declare class ChangeEvent extends Event implements GraphChangeEvent {
    readonly graph: GraphDescriptor;
    readonly visualOnly: boolean;
    readonly changeType: ChangeEventType;
    readonly affectedNodes: AffectedNode[];
    readonly affectedModules: NodeIdentifier[];
    readonly affectedGraphs: GraphIdentifier[];
    readonly label: string | null;
    static eventName: string;
    constructor(graph: GraphDescriptor, visualOnly: boolean, changeType: ChangeEventType, affectedNodes: AffectedNode[], affectedModules: NodeIdentifier[], affectedGraphs: GraphIdentifier[], label: string | null);
}
/**
 * This event is dispatched whenever a proposed change to the graph is
 * rejected. The rejection may happen for two reasons
 * - error: the change would create an invalid graph. For instance, adding an edge to a non-existent node.
 * - nochange: the change is unnecessary, because it results in no actual change to the graph. For example, adding an edge that already exists.
 */
export declare class ChangeRejectEvent extends Event implements GraphChangeRejectEvent {
    graph: GraphDescriptor;
    reason: ErrorRejection | NoChangeRejection;
    static eventName: string;
    constructor(graph: GraphDescriptor, reason: ErrorRejection | NoChangeRejection);
}
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