import type ThebeCodeCell from './cell';
import type ThebeNotebook from './notebook';
import type ThebeServer from './server';
import type ThebeSession from './session';
import type { IError } from '@jupyterlab/nbformat';
export declare enum ServerStatusEvent {
    'launching' = "launching",
    'ready' = "server-ready",
    'closed' = "closed",
    'unknown' = "unknown"
}
export declare enum SessionStatusEvent {
    'starting' = "starting",
    'ready' = "ready",
    'shutdown' = "shutdown"
}
export declare enum KernelStatusEvent {
    'starting' = "starting",
    'ready' = "ready",
    'shutdown' = "shutdown"
}
export declare enum NotebookStatusEvent {
    'attached' = "attached",
    'detached' = "detached",
    'executing' = "executing",
    'idle' = "idle"
}
export declare enum CellStatusEvent {
    'attached' = "attached",
    'detached' = "detached",
    'executing' = "executing",
    'idle' = "idle"
}
export declare enum EventSubject {
    'server' = "server",
    'session' = "session",
    'kernel' = "kernel",
    'notebook' = "notebook",
    'cell' = "cell"
}
export declare enum ErrorStatusEvent {
    'warning' = "warning",
    'executeError' = "execute-error",
    'error' = "error",
    'server' = "server-error",
    'session' = "session-error"
}
export declare function errorToMessage(json: IError): string;
export declare enum ThebeEventType {
    'status' = "status",
    'error' = "error"
}
export type EventObject = ThebeServer | ThebeSession | ThebeNotebook | ThebeCodeCell;
export type StatusEvent = ServerStatusEvent | SessionStatusEvent | NotebookStatusEvent | CellStatusEvent | KernelStatusEvent | ErrorStatusEvent;
export interface ThebeEventData {
    subject?: EventSubject;
    id?: string;
    status?: StatusEvent;
    message: string;
    object?: EventObject;
}
export type ThebeEventCb = (event: string, data: ThebeEventData) => void;
export declare class ThebeEvents {
    listeners: Record<string, Map<ThebeEventCb, {
        unbind: boolean;
    }>>;
    constructor();
    _ensureMap(event: string): void;
    trigger(event: ThebeEventType, evt: ThebeEventData): void;
    on(event: ThebeEventType, cb: ThebeEventCb): () => void;
    one(event: ThebeEventType, cb: ThebeEventCb): () => void;
    off(event: ThebeEventType, cb: ThebeEventCb): void;
}