Css module support is broken in 3.1.3

In 3.1.2 docs example works, imports in js return correct objects.

postcss({
  modules: true
})

In 3.1.3 same code imports return undefined. From https://github.com/egoist/rollup-plugin-postcss/pull/292 there is new onlyModules option I believe. Using it brings back correct objects.

postcss({
  modules: true,
  onlyModules: false
})

However, it’s a breaking change, this option is not documented and I have no idea if using it is a correct workaround.

Would be awesome to see official solution to this one 🙏

[song-jia]

I’ve same issue, set autoModules: false resolve my problem. My settings:

postcss({
    modules: {
        generateScopedName: 'myapp_[name]_[local]'
    },
    extract: true,
    autoModules: false
})

[slavafomin]

Wow, it almost broke our release, good thing that tests caught this.

After upgrading to 4.0.0 our styles stopped being processed as CSS modules therefore returning undefined to JS and emitting stylesheets without properly rewritten classnames. Setting autoModules to false helped it. By the way, we are not using .module in our filenames.