could we define browser version support to filter the result generated

[gjunming]

give a browser support list, depends on the list to generate the result. this kind would be more effective.

for very old old browser, some one / team wouldn't want to support any more, So, it needn't generated codes for them.

[gjunming]

does anyone has any comments on this requirement?

[notslang]

we could do this by integrating autoprefixer

[adius]

Sounds like a good idea!
Including autoprefixer sounds like a good idea as well!