fn = () => {
  return {
    element: {
      enter: (node) => {
        for (const [name, value] of Object.entries(node.attributes)) {
          if (
            value === '' &&
            // empty conditional processing attributes prevents elements from rendering
            !attrsGroups.conditionalProcessing.has(name)
          ) {
            delete node.attributes[name];
          }
        }
      },
    },
  };
}
Remove attributes with empty values.

@author Kir Belevich

@type {import('../lib/types.js').Plugin}