method WebSocket.addEventListener
          
Private
WebSocket.addEventListener<K extends keyof WebSocketEventMap>(type: K,listener: (this: WebSocket,ev: WebSocketEventMap[K],) => any,options?: boolean | AddEventListenerOptions,): void 
      
K extends keyof WebSocketEventMap
      
    
type: K
      
    
listener: (this: WebSocket,ev: WebSocketEventMap[K],) => any
      
    optional
options: boolean | AddEventListenerOptions
      
    void
      
    
WebSocket.addEventListener(type: string,listener: EventListenerOrEventListenerObject,options?: boolean | AddEventListenerOptions,): void 
      
listener: EventListenerOrEventListenerObject
      
    optional
options: boolean | AddEventListenerOptions
      
    void