import * as proto from "../../proto/topic_only_message";
import type { Decoder, Message, ProtoMessage } from "../interfaces";
export declare class TopicOnlyMessage implements Message {
    private proto;
    payload: undefined;
    rateLimitProof: undefined;
    timestamp: undefined;
    constructor(proto: proto.TopicOnlyMessage);
    get contentTopic(): string;
}
export declare class TopicOnlyDecoder implements Decoder<TopicOnlyMessage> {
    contentTopic: string;
    fromWireToProtoObj(bytes: Uint8Array): Promise<ProtoMessage | undefined>;
    fromProtoObj(proto: ProtoMessage): Promise<TopicOnlyMessage | undefined>;
}