We can customize exactly which Bootstrap files are loaded in our application by copying the contents of /node_modules/bootstrap/scss/bootstrap.scss and customizing their import paths so that they use our advanced sass-loader mechanism instead:

// Core variables and mixins
@import "~bootstrap/scss/variables";
@import "~bootstrap/scss/mixins";
@import "~bootstrap/scss/custom";

// Reset and dependencies
@import "~bootstrap/scss/normalize";
@import "~bootstrap/scss/print";

// Core CSS
@import "~bootstrap/scss/reboot";
@import "~bootstrap/scss/type";
@import "~bootstrap/scss/images";
@import "~bootstrap/scss/code";
@import "~bootstrap/scss/grid";
@import "~bootstrap/scss/tables";
@import "~bootstrap/scss/forms";
@import "~bootstrap/scss/buttons";

// Components
@import "~bootstrap/scss/transitions";
@import "~bootstrap/scss/dropdown";
@import "~bootstrap/scss/button-group";
@import "~bootstrap/scss/input-group";
@import "~bootstrap/scss/custom-forms";
@import "~bootstrap/scss/nav";
@import "~bootstrap/scss/navbar";
@import "~bootstrap/scss/card";
@import "~bootstrap/scss/breadcrumb";
@import "~bootstrap/scss/pagination";
@import "~bootstrap/scss/badge";
@import "~bootstrap/scss/jumbotron";
@import "~bootstrap/scss/alert";
@import "~bootstrap/scss/progress";
@import "~bootstrap/scss/media";
@import "~bootstrap/scss/list-group";
@import "~bootstrap/scss/responsive-embed";
@import "~bootstrap/scss/close";

// Components w/ JavaScript
// @import "~bootstrap/scss/modal";
// @import "~bootstrap/scss/tooltip";
// @import "~bootstrap/scss/popover";
// @import "~bootstrap/scss/carousel";

// Utility classes
@import "~bootstrap/scss/utilities";

In our custom Bootstrap loader file, we can now comment out or remove modules we don't want in our application, such as these JavaScript-dependent components.