export declare const enum WebSocketReadyState {
    connecting = 0,
    open = 1,
    closing = 2,
    closed = 3
}
export interface IWebSocketLike {
    readonly readyState: WebSocketReadyState;
    close(code?: number, reason?: string): void;
    send(data: string): void;
    addEventListener(type: 'open', handler: () => void): void;
    addEventListener(type: 'message', handler: (event: {
        data: any;
    }) => void): void;
    addEventListener(type: 'close', handler: (event: {
        code: number;
        reason: string;
    }) => void): void;
    addEventListener(type: 'error', handler: () => void): void;
}
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