import { PackageManager } from './packageManagers';
/**
 * Spawn a package manager installation.
 *
 * @returns A Promise that resolves once the installation is finished.
 *   On failure it rejects with an `Error` whose message includes the command,
 *   the exit code, and the tail of the captured output.
 */
export declare function install(packageManager: PackageManager, verboseOutput: boolean): Promise<void>;