import { Node, Connection, NodeId, ConnectionId, PortId } from '../../../../types/core';
import { NodeDefinition } from '../../../../types/NodeDefinition';
/**
 * @file Render optimization utilities using memoization for the node editor
 * Provides custom equality functions and hooks for optimizing React component re-renders
 * during node and connection rendering, especially for performance-critical drag operations
 */
import * as React from "react";
/**
 * Custom equality function for nodes that ignores position changes during drag
 */
export declare function areNodesEqual(prevNode: Node, nextNode: Node, isDragging: boolean): boolean;
/**
 * Custom equality function for connections that considers endpoint positions
 */
export declare function areConnectionsEqual(prevConnection: Connection, nextConnection: Connection, prevNodes: Record<NodeId, Node>, nextNodes: Record<NodeId, Node>): boolean;
/**
 * Memoized sorted nodes calculation
 */
export declare function useSortedNodes(nodes: Record<NodeId, Node>, nodeDefinitions: NodeDefinition[]): Node[];
/**
 * Memoized connected ports calculation
 */
export declare function useConnectedPorts(connections: Record<ConnectionId, Connection>): Set<string>;
/**
 * Memoized per-node connected port ids.
 * Ensures stable Set references for nodes whose connected port ids did not change.
 */
export declare function useConnectedPortIdsByNode(connections: Record<ConnectionId, Connection>): ReadonlyMap<NodeId, ReadonlySet<PortId>>;
/**
 * Create a memoized component with custom comparison
 */
export declare function createMemoizedComponent<P extends object>(Component: React.ComponentType<P>, propsAreEqual?: (prevProps: P, nextProps: P) => boolean): React.ComponentType<P>;