diff --git a/docs/txtnode.html b/docs/txtnode.html
index 46e37df8..92beb171 100644
--- a/docs/txtnode.html
+++ b/docs/txtnode.html
@@ -77,8 +77,6 @@ <h3><a class="anchor" aria-hidden="true" id="txtnode"></a><a href="#txtnode" ari
     <span class="hljs-comment">// Not need in AST</span>
     <span class="hljs-comment">// For example, top Root Node like `Document` has not parent.</span>
     parent?: TxtNode;
-
-    [index: <span class="hljs-built_in">string</span>]: <span class="hljs-built_in">any</span>;
 }