import { OnError } from '../client/query/subscription/types.js';
import { DbServer } from '../index.js';
type OnData = (res: Uint8Array) => void;
export type SubscriptionFullType = {
    listeners: Set<() => void>;
};
export type SubscriptionNow = {
    lastEval: number;
    next: number;
    listeners: Set<() => void>;
};
export type SubscriptionId = {
    types?: Uint16Array;
    ids: Map<number, Set<() => void>>;
    typesListener?: () => void;
    nowListener?: () => void;
};
export type Subscriptions = {
    updateId: number;
    active: number;
    updateHandler: ReturnType<typeof setTimeout>;
    ids: Map<number, SubscriptionId>;
    fullType: Map<number, SubscriptionFullType>;
    now: {
        listeners: Set<() => void>;
        lastUpdated: number;
    };
    subInterval: number;
};
export declare const initDefaultSubscriptions: () => Subscriptions;
export declare const startUpdateHandler: (server: DbServer) => void;
export declare const registerSubscription: (server: DbServer, query: Uint8Array, sub: Uint8Array, onData: OnData, onError: OnError, subInterval?: number) => () => void;
export {};