import { CommittedEvent, Messages } from "./messages";
/**
 * Basic event store statistics
 * TODO: implement as projection of all events (by artifact)
 */
export type StoreStat = {
    name: string;
    count: number;
    firstId?: number;
    lastId?: number;
    firstCreated?: Date;
    lastCreated?: Date;
};
/**
 * Consumer subscription
 */
export type Subscription = {
    readonly consumer: string;
    readonly watermark: number;
    readonly lease?: string;
    readonly expires?: Date;
};
/**
 * Consumer lease
 */
export type Lease<E extends Messages> = Subscription & {
    readonly lease: string;
    readonly expires: Date;
    readonly events: CommittedEvent<E>[];
};
/**
 * Poll options
 * - `names` event names to poll
 * - `timeout` lease timeout in ms
 * - `limit` max number of events to poll
 * - `times` number of times to poll
 */
export type PollOptions = {
    readonly names: string[];
    readonly timeout: number;
    readonly limit: number;
    readonly times?: number;
};
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