/**
 * @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 { BrowserConfig } from './browser';
export declare class Deferred<T> {
    readonly promise: Promise<T>;
    resolve: (value: T) => void;
    reject: (error: Error) => void;
    constructor();
}
/**
 * A mapping from NPM package name to version specifier, as used in a
 * package.json's "dependencies" and "devDependencies".
 */
export interface PackageDependencyMap {
    [pkg: string]: string;
}
/**
 * The descriptor of a package version as specified by the --package-version
 * flag.
 */
export interface PackageVersion {
    label: string;
    dependencyOverrides: PackageDependencyMap;
}
/** The subset of the format of an NPM package.json file we care about. */
export interface NpmPackageJson {
    private: boolean;
    dependencies: PackageDependencyMap;
}
/** The kinds of intervals we can measure. */
export declare type Measurement = CallbackMeasurement | PerformanceEntryMeasurement | ExpressionMeasurement;
export interface CallbackMeasurement {
    mode: 'callback';
}
export interface PerformanceEntryMeasurement {
    mode: 'performance';
    entryName: string;
}
export interface ExpressionMeasurement {
    mode: 'expression';
    expression: string;
}
export declare type CommandLineMeasurements = 'callback' | 'fcp' | 'global';
export declare const measurements: Set<string>;
/** A specification of a benchmark to run. */
export interface BenchmarkSpec {
    url: LocalUrl | RemoteUrl;
    measurement: Measurement[];
    name: string;
    browser: BrowserConfig;
}
export interface LocalUrl {
    kind: 'local';
    version?: PackageVersion;
    urlPath: string;
    queryString: string;
}
export interface RemoteUrl {
    kind: 'remote';
    url: string;
}
export interface BenchmarkResponse {
    millis: number;
}
/**
 * Benchmark results for a particular measurement on a particular page, across
 * all samples.
 */
export interface BenchmarkResult {
    /**
     * Label for this result. When there is more than one per page, this will
     * contain both the page and measurement labels as "page [measurement]".
     */
    name: string;
    /**
     * A single page can return multiple measurements. The offset into the array
     * of measurements in the spec that this particular result corresponds to.
     */
    measurementIndex: number;
    /**
     * Millisecond measurements for each sample.
     */
    millis: number[];
    queryString: string;
    version: string;
    browser: BrowserConfig;
    userAgent: string;
    bytesSent: number;
}