This repo gives a simple demonstration of an apparenty bug in the dart implementation of sass (the sass npm package).
Addtionally it demonstrates that the bug did not exist within the libsass-based implementation (the node-sass npm
package).
Run yarn install to install dependencies (sass and node-sass).
The problematic scss input is present in the index.scss file. Run yarn build to
see the output when this file is processed with the sass compiler (dart-sass). Run yarn node-sass-build to see
the output when the file is process with the node-sass compiler. The node-sass compiler gives the output that I
would expect - it includes the .foo.bar styles. The sass output does not include that selector.