Based on the Bootstrap 5 Sass & JS example
Include Bootstrap's source Sass and compiled JavaScript bundle via npm. Also includes the Autoprefixer for cross-browser CSS, Stylelint for Sass code quality, and Popper, a peer dependency of Bootstrap's JS used to position dropdowns, popovers, and tooltips.
git clone https://github.com/ytgov/yukon-bootstrap5-sass-js
cd yukon-bootstrap5-sass-js/
npm install
npm start