fix: traverse nested mdast for JSX registrations

Fixes #203

src/plugins/jsx/LexicalJsxVisitor.ts

@@ -1,12 +1,26 @@
 import { MdxJsxFlowElement, MdxJsxTextElement } from 'mdast-util-mdx-jsx'
 import { $isLexicalJsxNode, LexicalJsxNode } from './LexicalJsxNode'
 import { LexicalExportVisitor } from '../../exportMarkdownFromLexical'
+import * as Mdast from 'mdast'
+import { isMdastJsxNode } from '.'
 
 export const LexicalJsxVisitor: LexicalExportVisitor<LexicalJsxNode, MdxJsxFlowElement | MdxJsxTextElement> = {
   testLexicalNode: $isLexicalJsxNode,
   visitLexicalNode({ actions, mdastParent, lexicalNode }) {
+    function traverseNestedJsxNodes(node: Mdast.Content | Mdast.Parent) {
+      if ('children' in node && node.children instanceof Array) {
+        node.children.forEach((child: Mdast.Content | Mdast.Parent) => {
+          if (isMdastJsxNode(child)) {
+            actions.registerReferredComponent(child.name!)
+          }
+          traverseNestedJsxNodes(child)
+        })
+      }
+    }
+
     const mdastNode = lexicalNode.getMdastNode()
     actions.registerReferredComponent(mdastNode.name!)
+    traverseNestedJsxNodes(mdastNode)
     actions.appendToParent(mdastParent, mdastNode)
   }
 }

src/plugins/jsx/index.ts

@@ -8,6 +8,7 @@ import { $createLexicalJsxNode, LexicalJsxNode } from './LexicalJsxNode'
 import { LexicalJsxVisitor } from './LexicalJsxVisitor'
 import { MdastMdxJsEsmVisitor } from './MdastMdxJsEsmVisitor'
 import { MdastMdxJsxElementVisitor } from './MdastMdxJsxElementVisitor'
+import * as Mdast from 'mdast'
 
 /**
  * @internal
@@ -93,6 +94,10 @@ type JsxFlowPayload = {
 
 type InsertJsxPayload = JsxTextPayload | JsxFlowPayload
 
+export function isMdastJsxNode(node: Mdast.Content | Mdast.Parent | Mdast.Root): node is MdastJsx {
+  return node.type === 'mdxJsxFlowElement' || node.type === 'mdxJsxTextElement'
+}
+
 function toMdastJsxAttributes(attributes: Record<string, string>): MdastJsx['attributes'] {
   return Object.entries(attributes).map(([name, value]) => ({
     type: 'mdxJsxAttribute',