Function upgrade

github-actions/browserstack/set-browserstack-env.js:10686–10707

(opts, callback)

            throw new InvalidArgumentError("signal must be an EventEmitter or EventTarget");
          }
          super("UNDICI_UPGRADE");
          this.responseHeaders = responseHeaders || null;
          this.opaque = opaque || null;
          this.callback = callback;
          this.abort = null;
          this.context = null;
          addSignal(this, signal);
        }
        onConnect(abort, context) {
          if (this.reason) {
            abort(this.reason);
            return;
          }
          assert(this.callback);
          this.abort = abort;
          this.context = null;
        }
        onHeaders() {
          throw new SocketError("bad upgrade", null);
        }
        onUpgrade(statusCode, rawHeaders, socket) {
          assert(statusCode === 101);
          const { callback, opaque, context } = this;
          removeSignal(this);
          this.callback = null;