import { Benchmark } from './reporters';
import { MaybeAsync, IDeferred } from './async';
export interface IOptions {
    readonly defer?: boolean;
    readonly delay?: number;
    readonly initCount?: number;
    readonly maxTime?: number;
    readonly minSamples?: number;
    readonly minTime?: number;
    readonly name?: string;
    readonly onComplete?: (event: {
        target: Benchmark;
    }) => void;
    readonly onCycle?: (event: {
        target: Benchmark;
    }) => void;
    readonly onStart?: (event: {
        target: Benchmark;
    }) => void;
    readonly onError?: (event: {
        target: Benchmark;
    }) => void;
    readonly onReset?: (event: {
        target: Benchmark;
    }) => void;
    readonly setup?: MaybeAsync;
    readonly teardown?: MaybeAsync;
    readonly fn?: (deferred: IDeferred) => void;
}
/**
 * Benchmark options. A subset of those that Benchmark.js has, and better typed.
 */
export declare class Options implements IOptions {
    /**
     * Empty options.
     */
    static readonly empty: Options;
    readonly defer?: boolean;
    readonly delay?: number;
    readonly initCount?: number;
    readonly maxTime?: number;
    readonly minSamples?: number;
    readonly minTime?: number;
    readonly name?: string;
    readonly onComplete?: (event: {
        target: Benchmark;
    }) => void;
    readonly onCycle?: (event: {
        target: Benchmark;
    }) => void;
    readonly onStart?: (event: {
        target: Benchmark;
    }) => void;
    readonly onError?: (event: {
        target: Benchmark;
    }) => void;
    readonly onReset?: (event: {
        target: Benchmark;
    }) => void;
    readonly setup?: MaybeAsync;
    readonly teardown?: MaybeAsync;
    readonly fn?: (deferred: IDeferred) => void;
    constructor(options?: IOptions);
    /**
     * Creates a new set of options by simply overwriting these ones.
     */
    assign(options: IOptions): any;
    /**
     * Creates a new set of options by merging the `other` onto these ones.
     */
    merge(other?: IOptions): Options;
}