code: def less_compile(source, options=None):
      
      options = options or {}
      res = NodeLikeInterpreter().evaljs(
          ('var result = null;'
           'var less = require("less/less-node");',
           'less.render(dukpy.lesscode, dukpy.lessoptions, function(error, output) {'
           '  result = {"error": error, "output": output};'
           '});'
           'result;'),
          lesscode=source,
          lessoptions=options
      )
      if not res:
          raise RuntimeError('Results or errors unavailable')
  
      if res.get('error'):
          raise LessCompilerError(res['error']['message'])
  
      return res['output']['css']
docs: Compiles the given ``source`` from LESS to CSS