import { FeedSuccess, QueryValue, StreamEventData, QueryStats } from "../wire-protocol";
/**
 * A token used to initiate a Fauna event source at a particular snapshot in time.
 *
 * The example below shows how to request an event token from Fauna and use it
 * to establish an event steam.
 *
 * @example
 * ```javascript
 *  const response = await client.query(fql`
 *    Messages.byRecipient(User.byId("1234"))
 *  `);
 *  const eventSource = response.data;
 *
 *  const stream = client.stream(eventSource)
 *    .on("add", (event) => console.log("New message", event))
 *
 *  stream.start();
 * ```
 */
export interface EventSource {
    readonly token: string;
}
export declare function isEventSource(value: any): value is EventSource;
export declare class StreamToken implements EventSource {
    readonly token: string;
    constructor(token: string);
}
/**
 * A class to represent a page of events from a Fauna stream.
 */
export declare class FeedPage<T extends QueryValue> {
    #private;
    readonly events: IterableIterator<StreamEventData<T>>;
    readonly cursor: string;
    readonly hasNext: boolean;
    readonly stats?: QueryStats;
    constructor({ events, cursor, has_next, stats }: FeedSuccess<T>);
}