This package delegates a large amount of functionality to css-modules-loader-core, which is very outdated as of now:

• Dependency on postcss v6 (while this package uses v7, so every install results in multiple postcss verisons and their deps)
• Fixed and outdated versions of postcss-modules-x plugins

I saw a major version bump of this package just two weeks ago, but I think css-modules-loader-core really needs an update if this package is meant to be the recommended way of using CSS Modules with postcss.

AFAIK, webpack's css-loader pretty much rolls their own css modules postcss plugin that sidesteps this problem.