Can I use this on any react web page wihout changing source code?

[timepp]

I tried using tempermonkey to insert "<script>" at runtime but failed:

(function() {
    'use strict';
    const scr = document.createElement('script');
    scr.type="text/javascript";
    scr.src='https://cdn.jsdelivr.net/npm/react-render-tracker';
    scr['data-config'] = "inpage:true"
    const h = document.getElementsByTagName('head')[0]
    h.insertBefore(scr, h.firstChild)
})();