Filter proxy by extension

[winston0410]

It is not always a good idea to append styling through JS to DOM as <style>, if a static stylesheet is already there. I would like to have a switch to disable CSS proxy.

I know this proxy was made for people who want less configuration, but I found a filter that could disable proxy behavior selectively useful for those who want to make a more complex config and custom build logic. Right now snowpack is only able to have proxy all disable it for a dir completely, which is not that user-friendly.

Any thought on this?

[winston0410]

And I found this issue here:

#206