import type { OntologyTypeVertexId, Subgraph } from "../../../types/subgraph.js";
import type { BaseUrl, DataTypeWithMetadata, VersionedUrl } from "@blockprotocol/type-system";
/**
 * Returns all `DataTypeWithMetadata`s within the vertices of the subgraph
 *
 * @param subgraph
 */
export declare const getDataTypes: (subgraph: Subgraph) => DataTypeWithMetadata[];
/**
 * Gets a `DataTypeWithMetadata` by its `VersionedUrl` from within the vertices of the subgraph. Returns `undefined` if
 * the data type couldn't be found.
 *
 * @param subgraph
 * @param dataTypeId
 * @throws if the vertex isn't a `DataTypeVertex`
 */
export declare const getDataTypeById: (subgraph: Subgraph, dataTypeId: VersionedUrl) => DataTypeWithMetadata | undefined;
/**
 * Gets a `DataTypeWithMetadata` by its `OntologyTypeVertexId` from within the vertices of the subgraph. Returns
 * `undefined` if the data type couldn't be found.
 *
 * @param subgraph
 * @param vertexId
 * @throws if the vertex isn't a `DataTypeVertex`
 */
export declare const getDataTypeByVertexId: (subgraph: Subgraph, vertexId: OntologyTypeVertexId) => DataTypeWithMetadata | undefined;
/**
 * Returns all `DataTypeWithMetadata`s within the vertices of the subgraph that match a given `BaseUrl`
 *
 * @param subgraph
 * @param baseUrl
 */
export declare const getDataTypesByBaseUrl: (subgraph: Subgraph, baseUrl: BaseUrl) => DataTypeWithMetadata[];