import { StreamID } from '@dustil/streamid';
import { CID } from 'multiformats/cid';
export declare enum MsgType {
    UPDATE = 0,
    QUERY = 1,
    RESPONSE = 2,
    KEEPALIVE = 3
}
export declare type UpdateMessage = {
    typ: MsgType.UPDATE;
    stream: StreamID;
    tip: CID;
    model?: StreamID;
};
export declare type QueryMessage = {
    typ: MsgType.QUERY;
    id: string;
    stream: StreamID;
};
export declare type ResponseMessage = {
    typ: MsgType.RESPONSE;
    id: string;
    tips: Map<string, CID>;
};
export declare type KeepaliveMessage = {
    typ: MsgType.KEEPALIVE;
    ts: number;
    ver: string;
};
export declare type PubsubMessage = UpdateMessage | QueryMessage | ResponseMessage | KeepaliveMessage;
export declare function buildQueryMessage(streamId: StreamID): QueryMessage;
export declare function serialize(message: PubsubMessage): Uint8Array;
export declare function deserialize(message: any): PubsubMessage;
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