code: function getAttributesFromSelector(sel, existingAttributes) {
  	  // For example:
  	  // '.test' to { class: 'test' }
  	  // '#test' to { id: 'test' }
  	  // '[data-test="test"]' to { 'data-test': 'test' }
  	  if (!is$1.string(sel) || is$1.empty(sel)) {
  	    return {};
  	  }
  
  	  var attributes = {};
  	  var existing = extend({}, existingAttributes);
  	  sel.split(',').forEach(function (s) {
  	    // Remove whitespace
  	    var selector = s.trim();
  	    var className = selector.replace('.', '');
  	    var stripped = selector.replace(/[[\]]/g, ''); // Get the parts and value
  
  	    var parts = stripped.split('=');
  
  	    var _parts = _slicedToArray(parts, 1),
  	        key = _parts[0];
  
  	    var value = parts.length > 1 ? parts[1].replace(/["']/g, '') : ''; // Get the first character
  
  	    var start = selector.charAt(0);
  
  	    switch (start) {
  	      case '.':
  	        // Add to existing classname
  	        if (is$1.string(existing.class)) {
  	          attributes.class = "".concat(existing.class, " ").concat(className);
  	        } else {
  	          attributes.class = className;
  	        }
  
  	        break;
  
  	      case '#':
  	        // ID selector
  	        attributes.id = selector.replace('#', '');
  	        break;
  
  	      case '[':
  	        // Attribute selector
  	        attributes[key] = value;
  	        break;
  
  	      default:
  	        break;
  	    }
  	  });
  	  return extend(existing, attributes);
  	}
docs: Get an attribute object from a string selector