Hi @jackchoumine,
Thank you for joining the Auth0 Community and for reading this article. I have a few caveats about it.
First, it was written some time ago, and if you check the accompanying project on GitHub, you can see it uses Stencil 1.12. The current version of Stencil is 2.11, so many things may have changed in the meantime.
For specific and updated information about how to integrate Stencil with React and Vue, I suggest you check out the official documentation: