How to prevent formatting？

[1714080902120]

I replaced postcss with lightningcss, but I found that one of my plugins didn't work, which relied on the format of the code, such as:

// default code
body { --test:a,b,c; }

// postcss keep original, work
body { --test:a,b,c; }
// lightningcss default perform don't work
body { 
  --test: a, b, c;
}

How to solve it?

[1714080902120]

Well, it looks like I'll have to rewrite the plugin anymore