import { WsAgentRequestTransformFn } from './types';
import { Nonce } from '@dfinity/agent';
/**
 * Create a Nonce transform, which takes a function that returns a Buffer, and adds it
 * as the nonce to every call requests.
 * @param nonceFn A function that returns a buffer. By default uses a semi-random method.
 */
export declare function makeWsNonceTransform(nonceFn?: () => Nonce): WsAgentRequestTransformFn;