So far i have been using scss / sass with create react app, so i was downloading the node-sass package. But I have just discovered CSS module, I like the principle, and I would like to know if it is possible to use both at the same time, ie to have "MyComponent.module.scss" files?
Yes, it is possible. You can make files with the extension ".module.scss" to use SCSS and CSS Module at the same time.