I\'m trying to use bootstrap 4 with my angular installation. i\'ve run npm install --save bootstrap@next but i have a break at runtime :
./node_modules/css-l
The issue could be that you got the latest build with some bug. I noticed that bootstrap@4.0.0-beta.3 is causing this issue, but not bootstrap@4.0.0-beta.2. Check if yours is the same. Try uninstalling that and run something with a specific version.
npm install bootstrap@4.0.0-alpha.6
This resolved my problem.