import { Knex } from 'knex';
export declare function initDatabaseMetrics(knex: Knex): {
    entities_count_prom: import("prom-client").Gauge<"kind">;
    registered_locations_prom: import("prom-client").Gauge<string>;
    relations_prom: import("prom-client").Gauge<string>;
    entities_count: void;
    registered_locations: void;
    relations: void;
};