nextcss
Postcss alternative.
Playground
Use
package main
import (
"fmt"
"github.com/yisar/cssnext/parser"
)
func main() {
parser := parser.NewParser()
s := []byte(".a{color:#fff;}")
ast := parser.Parse(s)
fmt.Printf("ast: %s\n", ast.ToPrettyJSON())
}