• Operating System: Windows 10
• Node Version: 10.15.3
• NPM Version: 6.9.0
• webpack Version: 4.31.0
• mini-css-extract-plugin Version: 0.7.0

Expected Behavior

When offered compiled CSS content backed by a source map where sources are relative URLs, extracts a .css file with a source map that has correct path information. That is: the sources are resolved against this.context of the compiled CSS content, producing the correct source locations.

Actual Behavior

When offered compiled CSS content backed by a source map where sources are relative URLs, extracts a css file with a source map that has incorrect path information. The sources seem to be output as-is to be interpreted by debuggers and dev-tools as relative to the extracted CSS file. This produces incorrect source locations.

Code

N/A

How Do We Reproduce?

Minimal repro case:

https://github.com/NetMatch/mini-css-extract-plugin-testcase