import { Observable } from '../../node_modules/rxjs';
import { EventKey, FixedStart, MsgType, SerializedStateSnap, Where } from '../types';
import { EventStore } from './eventStore';
import { Events } from './types';
export declare type StateMsg = {
    type: MsgType.state;
    snapshot: SerializedStateSnap;
};
export declare type EventsMsg = {
    type: MsgType.events;
    events: Events;
    caughtUp: boolean;
};
export declare type TimeTravelMsg = {
    type: MsgType.timetravel;
    trigger: EventKey;
};
export declare type EventsOrTimetravel = StateMsg | EventsMsg | TimeTravelMsg;
export declare type SubscribeMonotonic = (session: string, subscriptions: Where<unknown>, attemptStartFrom: FixedStart) => Observable<EventsOrTimetravel>;
/**
 * Create a new endpoint, based on the given EventStore and SnapshotStore.
 * The returned function itself is stateless between subsequent calls --
 * all state is within the EventStore itself.
 */
export declare const eventsMonotonic: (eventStore: EventStore) => SubscribeMonotonic;