export declare enum BushitsuTransportReadyState {
    CONNECTING = 0,
    OPEN = 1,
    CLOSING = 2,
    CLOSED = 3
}
export interface BushitsuTransportMessageEvent {
    data: string;
}
export interface BushitsuTransportCloseEvent {
    code?: number;
    reason?: string;
    wasClean?: boolean;
}
export interface BushitsuTransportHandlers {
    onOpen?: () => void;
    onMessage?: (event: BushitsuTransportMessageEvent) => void;
    onClose?: (event: BushitsuTransportCloseEvent) => void;
    onError?: (error: unknown) => void;
}
export interface BushitsuTransport {
    connect(url: string, handlers: BushitsuTransportHandlers): Promise<void>;
    send(data: string): Promise<void> | void;
    disconnect(code?: number, reason?: string): void;
    getReadyState(): BushitsuTransportReadyState;
}
export declare const mapReadyState: (readyState: number | undefined) => BushitsuTransportReadyState;