Method constructor

out/cli.cjs:63612–63664

* @param {string} url * @param {string|string[]} protocols

(url2, protocols = [])

      };
      #bufferedAmount = 0;
      #protocol = "";
      #extensions = "";
      /**
       * @param {string} url
       * @param {string|string[]} protocols
       */
      constructor(url2, protocols = []) {
        super();
        webidl.argumentLengthCheck(arguments, 1, { header: "WebSocket constructor" });
        if (!experimentalWarned) {
          experimentalWarned = true;
          process.emitWarning("WebSockets are experimental, expect them to change at any time.", {
            code: "UNDICI-WS"
          });
        }
        const options = webidl.converters["DOMString or sequence<DOMString> or WebSocketInit"](protocols);
        url2 = webidl.converters.USVString(url2);
        protocols = options.protocols;
        const baseURL = getGlobalOrigin();
        let urlRecord;
        try {
          urlRecord = new URL(url2, baseURL);
        } catch (e3) {
          throw new DOMException3(e3, "SyntaxError");
        }
        if (urlRecord.protocol === "http:") {
          urlRecord.protocol = "ws:";
        } else if (urlRecord.protocol === "https:") {
          urlRecord.protocol = "wss:";
        }
        if (urlRecord.protocol !== "ws:" && urlRecord.protocol !== "wss:") {
          throw new DOMException3(
            `Expected a ws: or wss: protocol, got ${urlRecord.protocol}`,
            "SyntaxError"
          );
        }
        if (urlRecord.hash || urlRecord.href.endsWith("#")) {
          throw new DOMException3("Got fragment", "SyntaxError");
        }
        if (typeof protocols === "string") {
          protocols = [protocols];
        }
        if (protocols.length !== new Set(protocols.map((p4) => p4.toLowerCase())).size) {
          throw new DOMException3("Invalid Sec-WebSocket-Protocol value", "SyntaxError");
        }
        if (protocols.length > 0 && !protocols.every((p4) => isValidSubprotocol(p4))) {
          throw new DOMException3("Invalid Sec-WebSocket-Protocol value", "SyntaxError");
        }
        this[kWebSocketURL] = new URL(urlRecord.href);
        this[kController] = establishWebSocketConnection(
          urlRecord,
          protocols,
          this,
          (response) => this.#onConnectionEstablished(response),
          options
        );