import Stats from 'stats-accumulator';
import type { RunOptions, RunResult, TestFn } from './types.js';
export default class OperationsTest {
    name: string;
    fn: TestFn;
    constructor(name: string, fn: TestFn);
    run(options?: RunOptions): Promise<RunResult>;
    callibrate(_options: RunOptions): Promise<void>;
    runOnce(_options?: RunOptions): Promise<number>;
    metric(stats: Stats): number;
    formatStats(stats: Stats): string;
}