manual FB login integration ( without SDK)

Question

FB dialog gives me no feedback so that I can parse token from url and close it. Window event is stuck in onunload event.

The below code builds my FB url which I then open in Window.open function. But my token is never resolved or rejected because load is never fired.

  buildUrlFb = () => {
    let params = "fbloged=1";
    return `https://www.facebook.com/v13.0/dialog/oauth?client_id=${FB_ID}&redirect_uri=${redirectUri}&state=${params}`;
  };

  
popupWindow = (url, windowName, win, w, h) => {
    const y = win.top.outerHeight / 2 + win.top.screenY - h / 2;
    const x = win.top.outerWidth / 2 + win.top.screenX - w / 2;
    return win.open(
      url,
      windowName,
      `toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width=${w}, height=${h}, top=${y}, left=${x}`
    );
  };


  openFbDialog = async () => {
    return new Promise((resolve, reject) => {
      let uri = this.buildUrlFb();
      let window01 = this.popupWindow(uri, "Sign in with Fb", window, 500, 500);


      window01.addEventListener("load", (event) => {
        try {
          let uri02 = window01.location.href;
          let token = this.getUrlParameter("code", uri02); //  when the server will be handling the token
          // console.log("pop up token", token);
          resolve(token);
          window01.close();
        } catch (ex) {
          console.log("ex", ex);
          reject(null);
        }
      });
    });
  };

I tried to capture url token on load event, but for that I need to close pop up window and reopen it.

I want to basically capture/detect the redirect from facebook to my domain inside the pop up window.