/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
import * as webdriver from 'selenium-webdriver';
import { BenchmarkSpec } from './types.js';
import { ResultStatsWithDifferences } from './stats.js';
import { Config } from './config.js';
import { Server } from './server.js';
export declare class Runner {
    private readonly config;
    private readonly specs;
    private readonly servers;
    private readonly browsers;
    private readonly bar;
    private readonly results;
    /**
     * How many times we will load a page and try to collect all measurements
     * before fully failing.
     */
    private readonly maxAttempts;
    /**
     * Maximum milliseconds we will wait for all measurements to be collected per
     * attempt before reloading and trying a new attempt.
     */
    private readonly attemptTimeout;
    /**
     * How many milliseconds we will wait between each poll for measurements.
     */
    private readonly pollTime;
    private completeGithubCheck?;
    private hitTimeout;
    constructor(config: Config, servers: Map<BenchmarkSpec, Server>);
    run(): Promise<Array<ResultStatsWithDifferences> | undefined>;
    private launchBrowsers;
    private closeBrowsers;
    /**
     * Do one throw-away run per benchmark to warm up our server (especially
     * when expensive bare module resolution is enabled), and the browser.
     */
    private warmup;
    private recordSamples;
    private takeMinimumSamples;
    private takeAdditionalSamples;
    private takeSamples;
    capturePerfTraces(spec: BenchmarkSpec, driver: webdriver.WebDriver, sampleLabel: string): Promise<void>;
    makeResults(): ResultStatsWithDifferences[];
    private outputResults;
}