/**
 * @license
 * Copyright (c) 2019 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt The complete set of authors may be found
 * at http://polymer.github.io/AUTHORS.txt The complete set of contributors may
 * be found at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by
 * Google as part of the polymer project is also subject to an additional IP
 * rights grant found at http://polymer.github.io/PATENTS.txt
 */
import { BenchmarkSpec } from './types';
import { ResultStatsWithDifferences } from './stats';
import { Config } from './config';
import { Server } from './server';
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;
    makeResults(): ResultStatsWithDifferences[];
    private outputResults;
}