export declare const CURRENT_PROTOCOL_VERSION = 4;
export declare const REGISTER_ACK_TIMEOUT_MS = 15000;
export declare const SEND_ACK_TIMEOUT_MS = 15000;
export declare const MAX_RUNTIME_SESSION_ID_LENGTH = 256;
export interface RegisterEvent {
    event: "REGISTER";
    token: string;
    protocolVersion: number;
    clientVersion?: string;
    clientKind?: "runtime-broker";
    runtimeSessionId?: string;
    lastKnownSeq?: number;
}
export interface AddressedSendEvent {
    event: "SEND_MESSAGE";
    messageId: string;
    to: string;
    content: string;
    contentType: string;
    metadata?: Record<string, unknown>;
}
export interface AddressedTypingEvent {
    event: "TYPING";
    to: string;
    isTyping: boolean;
}
export interface AddressedDeliveryAckEvent {
    event: "DELIVERY_ACK";
    runtimeSessionId?: string;
    upToSeq: number;
}
export interface RequestGapFillEvent {
    event: "REQUEST_GAP_FILL";
    runtimeSessionId?: string;
    sinceSeq: number;
}
export interface RegisterAckEvent {
    event: "REGISTER_ACK";
    status: "ok" | "error";
    reason?: string;
    protocolVersion: number;
    agent?: {
        handle: string;
        name?: string;
    };
    owner?: {
        handle: string;
        displayName?: string;
    };
    deliverySeq?: number;
    deliveryRuntimeSessionId?: string;
}
export interface SendAckEvent {
    event: "SEND_ACK";
    messageId: string;
    status: "delivered" | "stored";
}
export interface AddressedMessageEvent {
    event: "MESSAGE_RECEIVED";
    messageId?: string;
    runtimeSessionId?: string;
    from: string;
    content: string;
    contentType: string;
    metadata: Record<string, unknown>;
    sentAt?: string;
    seq?: number;
}
export interface NodeRefView {
    kind: string;
    mstpAddress: string;
    handle?: string;
    displayName?: string;
    avatarUrl?: string;
}
export interface DeliveryPendingEvent {
    event: "DELIVERY_PENDING";
    count: number;
    upTo: string;
}
export interface StructuredErrorEvent {
    event: "ERROR";
    messageId?: string;
    to?: string;
    code: string;
    message: string;
}
export interface DeliveryStatusEvent {
    event: "DELIVERY_STATUS";
    messageId: string;
    status: "delivered";
    deliveredAt?: string;
}
export interface DeliveryCursorEvent {
    event: "DELIVERY_CURSOR";
    runtimeSessionId?: string;
    deliverySeq: number;
    deliveredSeq?: number;
}
export interface DeliverySkipEvent {
    event: "DELIVERY_SKIP";
    runtimeSessionId?: string;
    seq: number;
    reason: "runtime_mailbox_dismissed";
    messageId?: string;
    deliveredAt?: string;
}
export type PluginToConnectorEvent = RegisterEvent | AddressedSendEvent | AddressedTypingEvent | AddressedDeliveryAckEvent | RequestGapFillEvent;
export type ConnectorToPluginEvent = RegisterAckEvent | SendAckEvent | AddressedMessageEvent | DeliveryPendingEvent | DeliveryStatusEvent | DeliveryCursorEvent | DeliverySkipEvent | StructuredErrorEvent;
export declare function normalizeRuntimeSessionId(runtimeSessionId: string | undefined): string | undefined;
export declare function isRegisterAck(data: unknown): data is RegisterAckEvent;
export declare function isSendAck(data: unknown): data is SendAckEvent;
export declare function isAddressedMessage(data: unknown): data is AddressedMessageEvent;
export declare function isDeliveryPending(data: unknown): data is DeliveryPendingEvent;
export declare function isDeliveryStatus(data: unknown): data is DeliveryStatusEvent;
export declare function isDeliveryCursor(data: unknown): data is DeliveryCursorEvent;
export declare function isDeliverySkip(data: unknown): data is DeliverySkipEvent;
export declare function isStructuredError(data: unknown): data is StructuredErrorEvent;
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