fix: selection contenteditable node detection

Author: atk

packages/selection/dev/index.tsx

@@ -34,6 +34,11 @@ const App: Component = () => {
         <div contentEditable>
           t<b>e</b>
           <i>s</i>t
+          <ul>
+            <li>first item</li>
+            <li>second item</li>
+            <li>third item</li>
+          </ul>
         </div>
       </div>
       <div>

packages/selection/src/index.ts

@@ -17,7 +17,7 @@ export const getTextNodes = (startNode: Node) => {
 const addNodeLength = (length: number, node: Node) => length + (node as Text).data.length;
 
 const getRangePos = (container: Node, offset: number, texts: Node[]) => {
-  const index = texts.indexOf(container);
+  const index = texts.findIndex((text) => text === container || text.parentElement === container);
   return index === -1 ? NaN : texts.slice(0, index).reduce(addNodeLength, 0) + offset;
 };