import type { OntologyTypeVertexId, Subgraph } from "../../../types/subgraph.js";
import type { BaseUrl, EntityTypeWithMetadata, VersionedUrl } from "@blockprotocol/type-system";
/**
 * Returns all `EntityTypeWithMetadata`s within the vertices of the subgraph
 *
 * @param subgraph
 */
export declare const getEntityTypes: (subgraph: Subgraph) => EntityTypeWithMetadata[];
/**
 * Gets an `EntityTypeWithMetadata` by its `VersionedUrl` from within the vertices of the subgraph. Returns `undefined`
 * if the entity type couldn't be found.
 *
 * @param subgraph
 * @param entityTypeId
 * @throws if the vertex isn't a `EntityTypeVertex`
 */
export declare const getEntityTypeById: (subgraph: Subgraph, entityTypeId: VersionedUrl) => EntityTypeWithMetadata | undefined;
/**
 * Gets a `EntityTypeWithMetadata` by its `OntologyTypeVertexId` from within the vertices of the subgraph. Returns
 * `undefined` if the entity type couldn't be found.
 *
 * @param subgraph
 * @param vertexId
 * @throws if the vertex isn't a `EntityTypeVertex`
 */
export declare const getEntityTypeByVertexId: (subgraph: Subgraph, vertexId: OntologyTypeVertexId) => EntityTypeWithMetadata | undefined;
/**
 * Returns all `EntityTypeWithMetadata`s within the vertices of the subgraph that match a given `BaseUrl`
 *
 * @param subgraph
 * @param baseUrl
 */
export declare const getEntityTypesByBaseUrl: (subgraph: Subgraph, baseUrl: BaseUrl) => EntityTypeWithMetadata[];
/**
 * Gets an array of `EntityTypeWithMetadata` containing the requested entity type and all its ancestors
 * i.e. entity types it inherits from, whether directly or indirectly.
 *
 * @param subgraph a subgraph containing the entity type and its ancestors
 * @param entityTypeId the `VersionedUrl` of the entity type
 * @throws Error if the entity type or any of its ancestors aren't present in the subgraph
 * @returns EntityTypeWithMetadata[] an array of `EntityTypeWithMetadata`, where the first element is the entity type
 */
export declare const getEntityTypeAndParentsById: (subgraph: Subgraph, entityTypeId: VersionedUrl) => EntityTypeWithMetadata[];
/**
 * Gets an array of `EntityTypeWithMetadata` containing the requested entity types and all their ancestors
 * i.e. entity types they inherit from, whether directly or indirectly, ordered for breadth-first traversal.
 *
 * Note that each EntityType will only appear once in the result. If an EntityType appears multiple times in the
 * inheritance chains of different requested EntityTypes, it will only appear in the position it is first encountered.
 *
 * @param subgraph a subgraph containing the entity types and their ancestors
 * @param entityTypeIds the `VersionedUrl`s of the entity types
 * @throws Error if any requested entity type or any of its ancestors aren't present in the subgraph
 * @returns EntityTypeWithMetadata[] an array containing the requested entity types and their ancestors, breadth-first.
 */
export declare const getBreadthFirstEntityTypesAndParents: (subgraph: Subgraph, entityTypeIds: VersionedUrl[]) => EntityTypeWithMetadata[];
/**
 * Gets an array of `EntityTypeWithMetadata` containing the requested entity type and all its descendants
 * i.e. entity types which inherit from it, whether directly or indirectly.
 *
 * @param subgraph a subgraph containing the entity type and its descendants
 * @param entityTypeId the `VersionedUrl` of the entity type
 * @throws Error if the entity type or any of its descendants aren't present in the subgraph
 * @returns EntityTypeWithMetadata[] an array of `EntityTypeWithMetadata`, where the first element is the entity type
 */
export declare const getEntityTypeAndDescendantsById: (subgraph: Subgraph, entityTypeId: VersionedUrl) => EntityTypeWithMetadata[];