Are you talking about an application using the ArcGIS Maps SDK for JavaScript with React & TypeScript?
If so, it should be totally fine as explained here:
Screenshot 2026-06-22 at 13.50.25.png
You can see how to get started with:
`npx @ArcGIS/create -n my-arcgis-app -t react`On the getting started page.
I hope this helps.
Raul