my-component
dist
maps
my-component.css.map
css3-full Created with Sketch.
my-component.css
YAML Created with Sketch.
libraries.yml
Twig Created with Sketch.
my-component.html.twig
sass Created with Sketch.
my-component.scss

Sourcemapping enables you to trace back from which .scss file any rule of CSS is generated by. This can be handy when you are inspecting CSS in the browser. This would also be handy if you decide to use partial .scss files within a component.