/// <reference types="node" />
import EventEmitter from 'events';
export declare const EVENT_INIT = "init";
export declare const EVENT_REFRESH_RELAYS = "refresh-relays";
export declare const EVENT_REFRESHED_RELAYS = "refreshed-relays";
export declare const EVENT_NEXT_RELAY = "next-relay";
export declare const EVENT_SIGN_REQUEST = "sign-request";
export declare const EVENT_VALIDATE_REQUEST = "validate-request";
export declare const EVENT_SEND_TO_RELAYER = "send-to-relayer";
export declare const EVENT_RELAYER_RESPONSE = "relayer-response";
declare const events: {
    readonly init: "init";
    readonly "refresh-relays": "refresh-relays";
    readonly "refreshed-relays": "refreshed-relays";
    readonly "next-relay": "next-relay";
    readonly "sign-request": "sign-request";
    readonly "validate-request": "validate-request";
    readonly "send-to-relayer": "send-to-relayer";
    readonly "relayer-response": "relayer-response";
};
declare type Event = keyof typeof events;
declare class EnvelopingEventEmitter extends EventEmitter {
    registerEventListener(eventHandler: (event: Event, ...args: unknown[]) => void): void;
    unregisterEventListener(eventHandler: (event: Event, ...args: unknown[]) => void): void;
    emit(eventName: Event, ...args: unknown[]): boolean;
}
export default EnvelopingEventEmitter;
export { events as envelopingEvents };
export type { Event as EnvelopingEvent };