import type { Knex } from "knex";
/**
 * In order to ignore the items (types, views, etc.) that belong to extensions,
 * we use these queries to figure out what the OID's of those are. We can then
 * ignore them in fetchClasses.
 * @param db Knex instance
 * @returns the oids of the Postgres extension classes and types
 */
declare const fetchExtensionItemIds: (db: Knex) => Promise<{
    extClassOids: number[];
    extTypeOids: number[];
    extProcOids: number[];
}>;
export default fetchExtensionItemIds;