/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: BSD-3-Clause
 */
import { MountPoint } from './server.js';
import { BenchmarkSpec, GitDependency, NpmPackageJson, PackageVersion } from './types.js';
interface GitDependencyWithTempDir extends GitDependency {
    tempDir: string;
    sha: string;
}
/**
 * Parse an array of strings of the form <package>@<version>.
 */
export declare function parsePackageVersions(flags: string[]): PackageVersion[];
export interface ServerPlan {
    /** The benchmarks this server will handle. */
    specs: BenchmarkSpec[];
    /** NPM installations needed for this server. */
    npmInstalls: NpmInstall[];
    /** URL to disk path mappings. */
    mountPoints: MountPoint[];
}
export interface NpmInstall {
    installDir: string;
    packageJson: NpmPackageJson;
}
export declare function makeServerPlans(benchmarkRoot: string, npmInstallRoot: string, specs: BenchmarkSpec[]): Promise<{
    plans: ServerPlan[];
    gitInstalls: GitDependencyWithTempDir[];
}>;
export declare function hashStrings(...strings: string[]): string;
export declare const tachometerVersion: any;
/**
 * Write the given package.json to the given directory and run "npm install" in
 * it. If the directory already exists, don't do anything except log.
 */
export declare function prepareVersionDirectory({ installDir, packageJson }: NpmInstall, forceCleanInstall: boolean, npmrc?: string): Promise<void>;
/**
 * Check out the given commit from the given git repo, and run setup commands.
 * If the directory already exists, don't do anything except log.
 */
export declare function installGitDependency(gitInstall: GitDependencyWithTempDir, forceCleanInstall: boolean): Promise<void>;
export {};