Function waitForUpgrade

packages/socket.io/client-dist/socket.io.js:2076–2080

()

        close();
      };
      var waitForUpgrade = function waitForUpgrade() {
        class="cm">// wait for upgrade to finish since we can't send packets while pausing a transport
        _this6.once(class="st">"upgrade", cleanupAndClose);
        _this6.once(class="st">"upgradeError", cleanupAndClose);
      };
      if (class="st">"opening" === this.readyState || class="st">"open" === this.readyState) {
        this.readyState = class="st">"closing";
        if (this.writeBuffer.length) {