/**
 * Launch game payload definition.
 */
type Launch = {
    /**
     * Application ID to launch.
     *
     * @example 211
     */
    id: string | number;
    /**
     * Optional launch arguments passed to the application.
     *
     * @example '-windowed -noborder'
     */
    args?: string;
};
/**
 * Runs an application. It will be installed if necessary.
 *
 * @param payload Launch payload.
 * @returns Steam launch URL.
 * @example
 * launch({ id: 211 })
 * // => 'steam://run/211'
 * @example
 * launch({ id: 211, args: '-windowed' })
 * // => 'steam://run/211//-windowed/'
 * @link https://developer.valvesoftware.com/wiki/Steam_browser_protocol
 */
export declare function launch(payload: Launch): string;
export {};