import { BenchmarkOpts } from "../types.js";
import { BenchmarkRunOptsWithFn } from "./runBenchFn.js";
type PartialBy<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
interface ItBenchFn {
    <T, T2>(opts: BenchmarkRunOptsWithFn<T, T2>): void;
    <T, T2>(idOrOpts: string | Omit<BenchmarkRunOptsWithFn<T, T2>, "fn">, fn: (arg: T) => void): void;
    <T, T2>(idOrOpts: string | PartialBy<BenchmarkRunOptsWithFn<T, T2>, "fn">, fn?: (arg: T) => void | Promise<void>): void;
}
interface ItBench extends ItBenchFn {
    only: ItBenchFn;
    skip: ItBenchFn;
}
export declare const itBench: ItBench;
/**
 * Customize benchmark opts for a describe block. Affects only tests within that Mocha.Suite
 * ```ts
 * describe("suite A1", function () {
 *   setBenchOpts({runs: 100});
 *   // 100 runs
 *   itBench("bench A1.1", function() {});
 *   itBench("bench A1.2", function() {});
 *   // 300 runs
 *   itBench({id: "bench A1.3", runs: 300}, function() {});
 *
 *   // Supports nesting, child has priority over parent.
 *   // Arrow functions can be used, won't break it.
 *   describe("suite A2", () => {
 *     setBenchOpts({runs: 200});
 *     // 200 runs.
 *     itBench("bench A2.1", () => {});
 *   })
 * })
 * ```
 */
export declare function setBenchOpts(opts: BenchmarkOpts): void;
export {};
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