import { E as EventTarget, W as WebSocket, C as CloseEvent, a as Event, M as MessageEvent } from '../shared/crossws.BQXMA5bH.js';

type Ctor<T> = {
    prototype: T;
    new (): T;
};
declare const _EventTarget: Ctor<EventTarget>;
interface WebSocketSSEOptions {
    protocols?: string | string[];
    /** enabled by default */
    bidir?: boolean;
    /** enabled by default */
    stream?: boolean;
    headers?: HeadersInit;
}
declare class WebSocketSSE extends _EventTarget implements WebSocket {
    #private;
    static CONNECTING: number;
    static OPEN: number;
    static CLOSING: number;
    static CLOSED: number;
    readonly CONNECTING = 0;
    readonly OPEN = 1;
    readonly CLOSING = 2;
    readonly CLOSED = 3;
    onclose: ((this: WebSocket, ev: CloseEvent) => any) | null;
    onerror: ((this: WebSocket, ev: Event) => any) | null;
    onopen: ((this: WebSocket, ev: Event) => any) | null;
    onmessage: ((this: WebSocket, ev: MessageEvent<any>) => any) | null;
    binaryType: BinaryType;
    readyState: number;
    readonly url: string;
    readonly protocol: string;
    readonly extensions: string;
    readonly bufferedAmount: number;
    constructor(url: string, init?: string | string[] | WebSocketSSEOptions);
    close(_code?: number, _reason?: string): void;
    send(data: any): Promise<void>;
}

export { WebSocketSSE };
export type { WebSocketSSEOptions };