code: function atimport() {
      var pos = position();
      var m = match(new RegExp('^@import *([^;\\n]+);'));
      if (!m) return;
  
      var val = trim(m[1]);
      m = new RegExp('^"([^"]+)"( +with +(.+))?$').exec(val);
      if (m) {
        return pos({
          type: 'import',
          require: trim(m[1]),
          args: trim(m[3])
        });
      } else {
        return pos({
          type: 'import',
          import: val
        });
      }
    }
docs: Parse import