The @import does not work well without preprocessor (less, etc)

[LastLeaf]

Currently the stylesheet compiler does not handle @import itself.

Other preprocessors (like less-loader) can transform it properly. However, if use without preprocessors, the @import will be passed to css-loader which inlines the imported content directly, missing proper transform of rpx and class prefixes.

[LastLeaf]

Added a compiler feature to convert @import to a comment (for further compilation). However, this problem is still not solved.