import { SubscribableOrPromise } from 'rxjs';
export interface NonceTracker {
    up: (address: string) => SubscribableOrPromise<number>;
    down: (address: string) => SubscribableOrPromise<number>;
}
export declare type NonceLoader = (address: string) => SubscribableOrPromise<number>;
export declare function createNonceTracker(loadNonce: NonceLoader): NonceTracker;