Where is the location for sweetalert2?

Question

I am having a hard time installing the swwetalert2 package.

npm i sweetalert2 - its fine. the package is inside node_modules.

inside my app.css i tried different variation of the @import

@import '/sweetalert2';

@import '~sweetalert2';
@import 'sweetalert2/dist'; 

but every time I run npm run dev or production I get this:

ERROR in ./resources/css/app.css Module build failed (from ./node_modules/css-loader/index.js): ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/src/index.js):
Error: Failed to find 'sweetalert2'

no matter the variation I use for the location.