/// <reference types="node" />
import cp from 'child_process';
import { BaseEncodingOptions } from 'fs';
declare type ICommandName = 'cmd.exe' | 'open' | 'xdg-open';
declare type IExtraCommandName = ICommandName | string;
interface IOptions {
    command?: IExtraCommandName;
    encoding?: BaseEncodingOptions['encoding'];
}
declare function opener(args: string | string[], options?: IOptions, callback?: () => void): cp.ChildProcess;
export default opener;