Interface ILiveWebSocketLike

interface ILiveWebSocketLike {
    addEventListener(type: "open", listener: () => void): void;
    addEventListener(
        type: "message",
        listener: (event: { data: unknown }) => void,
    ): void;
    addEventListener(
        type: "error",
        listener: (event: { error?: unknown; message?: string }) => void,
    ): void;
    addEventListener(
        type: "close",
        listener: (event: { code?: number; reason?: string }) => void,
    ): void;
    close(code?: number, reason?: string): void;
    send(data: string): void;
}