improve attributes

packages/core/src/utils/injectExtensionAttributesToParseRule.ts

@@ -26,9 +26,12 @@ export default function injectExtensionAttributesToParseRule(parseRule: ParseRul
               [item.name]: (node as HTMLElement).dataset[item.name],
             }
 
+          const filteredAttributes = Object.fromEntries(Object.entries(attributes)
+            .filter(([, value]) => value !== undefined && value !== null))
+
           return {
             ...items,
-            ...attributes,
+            ...filteredAttributes,
           }
         }, {})
 

packages/extension-link/index.ts

@@ -39,8 +39,7 @@ const Link = createMark({
           target: attributes.target,
         }),
         parseHTML: node => ({
-          // TODO: always return default value on `null` or `undefined`
+          target: node.getAttribute('target'),
-          target: node.getAttribute('target') || this.options.target,
         }),
       },
     }