A simple custom importer to get around the deprecation of importing .css files in LibSass.
In early 2018, LibSass deprecated importing files ending in .css, suggesting to instead use a custom importer (see sass/node-sass#2362). This is problematic because we have no control over what file types third-party packages provide. This module functions as a simple custom importer for .css files for use with node-sass.
const SASS = require("node-sass");
const CSS_IMPORTER = require("node-sass-simple-css-importer");
sass.render({
...
importer: CSS_IMPORTER(),
...
});