Backslash urls when using duo on Windows

[SittingCandle]

When using duo on windows, the generated urls on CSS have backslashes instead of slashes, which breaks them all. Example
CSS:
background: url('components\[email protected]\select2.png')

Server running:
http://localhost:8765/build/[email protected] Failed to load resource: the server responded with a status of 404 (Not Found)

Could you please advise how to solve?

[stephenmathieson]

looks like it's this: https://github.com/duojs/pack/blob/3.0.5/lib/css/index.js#L87