/**
 * Returns a tuple [options, callback].
 *
 * @param args
 * @example
 * const [options = {}, callback] = resolveOptionsAndCallback(args);
 */
export declare function resolveOptionsAndCallback<Options extends object, Callback extends (...args: never[]) => unknown>(args: [callback?: Callback] | [options: Options, callback?: Callback]): [Options | undefined, Callback | undefined];