import type { MetadataIndex } from '../../services/metadata-index/types.js';
import type { AgentDiagramData } from '../../types/diagram.js';
/**
 * Infer an object's domain group from its API name:
 * - `ns__Object__c` → the package namespace (`ns`) — e.g. `cgcloud`.
 * - `Object__c` (no namespace) → `custom`.
 * - `Object` (no `__c`) → `core` (a standard sObject).
 * A junction refinement (an object that only points OUT at >= 2 others and is
 * pointed at by none) overrides this to `junction` in {@link forceAppToErd}.
 */
export declare function inferObjectGroup(apiName: string): string;
/**
 * Build an ER `AgentDiagramData` from a metadata index.
 *
 * Nodes: every `CustomObject` entry (standard + custom), grouped by namespace.
 * Edges: each `referenceTo` relationship, with the source collapsed to the
 * relationship field's PARENT object and the field→own-parent ownership edge
 * dropped. Object→object edges that survive are deduped; the relationship field
 * name (when known) becomes the edge label.
 *
 * @param index   the metadata index from `buildMetadataIndex`
 * @param title   diagram title (default "Data Model")
 */
export declare function forceAppToErd(index: MetadataIndex, title?: string): AgentDiagramData;