import type { SigDbCounts } from './stats';
/**
 * Counts the bundles of the mounted signature database, what they describe, and what they occupy.
 * Every step is defensive, as this also runs against older databases when the history is filled in, and a
 * machine without a mounted database simply yields `undefined` instead of failing the benchmark.
 */
export declare function countSignatureDatabase(): Promise<SigDbCounts | undefined>;