Crear funciones lesscss

less.js

less = {
  functions: {
    test: function(value, context){
      // return new(tree.Dimension)(valor, unidad)
      // return new(tree.Anonymous)
      // return new(tree.Quoted)
      // return new(tree.URL)
      // return new(tree.color)(color, alpha)
    }
  }
}