import { ServiceNowInstance } from "../ServiceNowInstance.js";
import { GetRelationshipsOptions, TraverseGraphOptions, RelationshipsResult, GraphTraversalResult } from './CMDBModels.js';
/**
 * CMDBRelationships provides methods for querying and traversing
 * CMDB relationship graphs. Supports single-level lookups and
 * multi-level BFS traversal with configurable depth and direction.
 */
export declare class CMDBRelationships {
    private static readonly CMDB_CI_TABLE;
    private static readonly CMDB_REL_CI_TABLE;
    private static readonly MAX_DEPTH;
    private static readonly MAX_NODES;
    private _logger;
    private _tableAPI;
    private _instance;
    /** Cache for CI records to minimize API calls during traversal */
    private _ciCache;
    constructor(instance: ServiceNowInstance);
    /**
     * Get direct relationships of a CI (single level).
     *
     * @param options Relationship query options
     * @returns RelationshipsResult with the CI and its direct relationships
     * @throws Error if ciSysId is empty
     */
    getRelationships(options: GetRelationshipsOptions): Promise<RelationshipsResult>;
    /**
     * Traverse the CMDB relationship graph using BFS starting from a CI.
     *
     * @param options Traversal options
     * @returns GraphTraversalResult with all nodes, edges, and metadata
     * @throws Error if ciSysId is empty
     */
    traverseGraph(options: TraverseGraphOptions): Promise<GraphTraversalResult>;
    /**
     * Look up a single CI by sys_id. Uses cache when available.
     * @private
     */
    private _lookupCI;
    /**
     * Batch look up multiple CIs by sys_id.
     * @private
     */
    private _batchLookupCIs;
    /**
     * Query relationships from cmdb_rel_ci.
     * @private
     */
    private _queryRelationships;
    /**
     * Extract sys_id from a field that may be a string or reference object.
     * @private
     */
    private _extractSysId;
    /**
     * Extract display value or value from a field.
     * @private
     */
    private _extractDisplayValue;
}