Where should I put my createGlobalTheme/createTheme when building a ui library?

[phil-lgr]

I have components in

@name/react-ui
src/theme.css.ts
src/button.css.ts
src/button.tsx

@name/website
src/theme.css.ts
src/app.tsx

And I have an app that consumes it

I have a default theme to apply and then in the app I want to override it with the apps' styles

My question is where should I place my createGlobalTheme? in the lib or application?

[phil-lgr]

I also see that vanilla is parsing both .js and .ts files

It's unclear on how to have the best setup