/**
 * Flowchart Graph Operations
 *
 * Graph surgery and chain operations for the Flowchart class.
 * These methods are added to the Flowchart prototype.
 */
import type { Flowchart } from './flowchart.js';
import type { AddLinkOptions } from './flowchart-types.js';
/**
 * Insert a node between two connected nodes.
 * If A --> B exists, insertBetween('X', 'A', 'B') creates A --> X --> B
 */
export declare function insertBetween(this: Flowchart, newNodeId: string, source: string, target: string, nodeText?: string): Flowchart;
/**
 * Remove a node and reconnect its neighbors.
 * If A --> B --> C, removeAndReconnect('B') creates A --> C
 */
export declare function removeAndReconnect(this: Flowchart, nodeId: string): Flowchart;
/**
 * Get all nodes that can be reached from a starting node.
 */
export declare function getReachable(this: Flowchart, startId: string): string[];
/**
 * Get all nodes that can reach a target node.
 */
export declare function getAncestors(this: Flowchart, targetId: string): string[];
/**
 * Get the shortest path between two nodes.
 */
export declare function getPath(this: Flowchart, source: string, target: string): string[];
/**
 * Get a linear chain of nodes between two points.
 * Only works if there's a single path (no branching).
 */
export declare function getChain(this: Flowchart, startId: string, endId: string): string[];
/**
 * Yank (remove) a chain of nodes and reconnect around them.
 * If we have X -> A -> B -> C -> Y and we yank [A, B, C], we get X -> Y.
 */
export declare function yankChain(this: Flowchart, nodeIds: string[]): Flowchart;
/**
 * Splice a chain of existing nodes between two points.
 */
export declare function spliceChain(this: Flowchart, nodeIds: string[], source: string, target: string, options?: AddLinkOptions): Flowchart;
/**
 * Reverse the direction of all links in a chain.
 */
export declare function reverseChain(this: Flowchart, nodeIds: string[]): Flowchart;
/**
 * Extract a subchain from the graph, removing it but keeping internal links intact.
 * Returns the extracted nodes as a new Flowchart.
 */
export declare function extractChain(this: Flowchart, nodeIds: string[]): Flowchart;
/**
 * Rebase nodes - move a set of nodes to be children of a new parent.
 */
export declare function rebaseNodes(this: Flowchart, nodeIds: string[], newParent: string): Flowchart;
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