import { SubgraphInput } from './SubgraphInput';
import { SubgraphOutputNode } from './SubgraphOutputNode';
import { INodeInputSlot, INodeOutputSlot, Point, ReadOnlyRect } from '../interfaces';
import { LGraphNode } from '../LGraphNode';
import { RerouteId } from '../Reroute';
import { LLink } from '../LLink';
import { SubgraphSlot } from './SubgraphSlotBase';
/**
 * An output "slot" from a subgraph to a parent graph.
 *
 * IMPORTANT: A subgraph "output" is both an output AND an input.  It creates an extra link connection point between
 * a parent graph and a subgraph, so is conceptually similar to a reroute.
 *
 * This can be a little confusing, but is easier to visualise when imagining editing a subgraph.
 * You have "Subgraph Outputs", because they go from inside the subgraph and out, but links to them come from "node outputs".
 *
 * Functionally, however, when editing a subgraph, that "subgraph output" is the "target" or "input side" of a link.
 */
export declare class SubgraphOutput extends SubgraphSlot {
    parent: SubgraphOutputNode;
    connect(slot: INodeOutputSlot, node: LGraphNode, afterRerouteId?: RerouteId): LLink | undefined;
    get labelPos(): Point;
    arrange(rect: ReadOnlyRect): void;
    /**
     * Checks if this slot is a valid target for a connection from the given slot.
     * For SubgraphOutput (which acts as an input inside the subgraph),
     * the fromSlot should be an output slot.
     */
    isValidTarget(fromSlot: INodeInputSlot | INodeOutputSlot | SubgraphInput | SubgraphOutput): boolean;
}