Transpiles Sass/Scss files to CSS and minifies it instantly - every time you save the file
Download this extension from the Marketplace or get the CI build.
Right-click any .scss or .sass file and hit Transpile into CSS
That will now register the transpiler as a Custom Tool for that file and generate a .css file nested behind it.
Every time you save the .scss file, a transpiled and minified .css file will be generated instantly.