import { Port, Node, Connection } from '../../../types/core';
import { PortDefinition } from '../../../types/NodeDefinition';
/**
 * Get all connections for a specific port (both directions)
 */
export declare function getPortConnections(port: Port, connections: Record<string, Connection>): Connection[];
/**
 * Get connections for a port in a specific direction
 */
export declare function getPortConnectionsByDirection(port: Port, connections: Record<string, Connection>, direction: "from" | "to"): Connection[];
/**
 * Check if a port has any connections
 */
export declare function hasPortConnections(port: Port, connections: Record<string, Connection>): boolean;
/**
 * Count the number of connections for a port (both directions)
 */
export declare function countPortConnections(port: Port, connections: Record<string, Connection>): number;
/**
 * Result of checking port capacity
 */
export type PortCapacityResult = {
    /** Whether the port is at capacity */
    atCapacity: boolean;
    /** Existing connections for the port in the specified direction */
    existingConnections: Connection[];
    /** Normalized max connections (undefined = unlimited) */
    maxConnections: number | undefined;
};
/**
 * Check port capacity and return detailed information.
 * Single source of truth for capacity checking logic.
 *
 * @param port - The port to check
 * @param connections - All connections in the editor
 * @param direction - Direction to check ("from" for output, "to" for input)
 * @param portDefinition - Optional port definition for fallback maxConnections
 */
export declare function checkPortCapacity(port: Port, connections: Record<string, Connection>, direction: "from" | "to", portDefinition?: PortDefinition): PortCapacityResult;
/**
 * Get the other port information for a connection.
 * This function requires a context callback (getNodePorts) to resolve ports.
 */
export declare function getOtherPortInfo(connection: Connection, port: Port, nodes: Record<string, Node>, getNodePorts: (nodeId: string) => Port[]): {
    otherNode: Node;
    otherPort: Port;
    isFromPort: boolean;
} | null;