import type { Message, PeerId, PeerMetadata } from "@automerge/automerge-repo/slim";
import type { ProtocolVersion } from "./protocolVersion.js";
/** Sent by the client to the server to tell the server the clients PeerID */
export type JoinMessage = {
    type: "join";
    /** The PeerID of the client */
    senderId: PeerId;
    /** Metadata presented by the peer  */
    peerMetadata: PeerMetadata;
    /** The protocol version the client supports */
    supportedProtocolVersions: ProtocolVersion[];
};
/** Sent by the server in response to a "join" message to advertise the servers PeerID */
export type PeerMessage = {
    type: "peer";
    /** The PeerID of the server */
    senderId: PeerId;
    /** Metadata presented by the peer  */
    peerMetadata: PeerMetadata;
    /** The protocol version the server selected for this connection */
    selectedProtocolVersion: ProtocolVersion;
    /** The PeerID of the client */
    targetId: PeerId;
};
/** An error occurred. The other end will terminate the connection after sending this message */
export type ErrorMessage = {
    type: "error";
    /** The peer sending the message */
    senderId: PeerId;
    /** A description of the error*/
    message: string;
    /** The PeerID of the client */
    targetId: PeerId;
};
/** A message from the client to the server */
export type FromClientMessage = JoinMessage | Message;
/** A message from the server to the client */
export type FromServerMessage = PeerMessage | ErrorMessage | Message;
export declare const isJoinMessage: (message: FromClientMessage) => message is JoinMessage;
export declare const isPeerMessage: (message: FromServerMessage) => message is PeerMessage;
export declare const isErrorMessage: (message: FromServerMessage) => message is ErrorMessage;
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