JS file size increases 291 kB -> 314 kB upon upgrading from v0.25.0 to v0.28.0

[elfey]

Do you want to request a feature or report a bug?

Bug.

What is the current behavior?
For some reason upon upgrading to v0.28.0 of css-loader from v0.25.0, our project's build size increased from 291 kB to 314 kB. This doesn't make sense... why is a loader for CSS increasing our JS build size when we're exporting it to CSS?

If the current behavior is a bug, please provide the steps to reproduce.

Take any JavaScript project, and build with both versions of css loader (v0.25.0 and v0.28.0)

What is the expected behavior?
It shouldn't touch the JS, we're exporting it to a separate file.

Please mention other relevant information such as your webpack version, Node.js version and Operating System.
Webpack 2.2.0
Tested on Node 6.9.10 and 7.7.3
Mac OS 10.12.4

[michael-ciniawsky]

Duplicate of #454