Method constructor

deps/undici/undici.js:16772–16811

* Creates a new EventSource object. * @param {string} url * @param {EventSourceInit} [eventSourceInitDict={}] * @see https://html.spec.whatwg.org/multipage/server-sent-events.html#the-eventsource-interface

(url, eventSourceInitDict = {})

       * @see https://html.spec.whatwg.org/multipage/server-sent-events.html#the-eventsource-interface
       */
      constructor(url, eventSourceInitDict = {}) {
        super();
        webidl.util.markAsUncloneable(this);
        const prefix = "EventSource constructor";
        webidl.argumentLengthCheck(arguments, 1, prefix);
        if (!experimentalWarned) {
          experimentalWarned = true;
          process.emitWarning("EventSource is experimental, expect them to change at any time.", {
            code: "UNDICI-ES"
          });
        }
        url = webidl.converters.USVString(url);
        eventSourceInitDict = webidl.converters.EventSourceInitDict(eventSourceInitDict, prefix, "eventSourceInitDict");
        this.#dispatcher = eventSourceInitDict.node.dispatcher || eventSourceInitDict.dispatcher;
        this.#state = {
          lastEventId: "",
          reconnectionTime: eventSourceInitDict.node.reconnectionTime
        };
        const settings = environmentSettingsObject;
        let urlRecord;
        try {
          urlRecord = new URL(url, settings.settingsObject.baseUrl);
          this.#state.origin = urlRecord.origin;
        } catch (e) {
          throw new DOMException(e, "SyntaxError");
        }
        this.#url = urlRecord.href;
        let corsAttributeState = ANONYMOUS;
        if (eventSourceInitDict.withCredentials === true) {
          corsAttributeState = USE_CREDENTIALS;
          this.#withCredentials = true;
        }
        const request = createPotentialCORSRequest(urlRecord, "", corsAttributeState);
        request.client = environmentSettingsObject.settingsObject;
        request.headersList.set("Accept", "text/event-stream");
        request.cache = "no-store";
        request.initiator = "other";
        this.#request = request;
        this.#connect();
      }
      /**
       * Returns the state of this EventSource object's connection. It can have the
       * values described below.