Method constructor

deps/undici/undici.js:14592–14600

(type, eventInitDict = {})

      }
      #eventInit;
      constructor(type, eventInitDict = {}) {
        const prefix = "CloseEvent constructor";
        webidl.argumentLengthCheck(arguments, 1, prefix);
        type = webidl.converters.DOMString(type, prefix, "type");
        eventInitDict = webidl.converters.CloseEventInit(eventInitDict);
        super(type, eventInitDict);
        this.#eventInit = eventInitDict;
        webidl.util.markAsUncloneable(this);
      }
      get wasClean() {
        webidl.brandCheck(this, _CloseEvent);
        return this.#eventInit.wasClean;