fallback for admonitions

sometimes innerHTML for 2nd td is undefined, need to figure out which case this is.

Author: osfameron

lib/markdown-for-llm.js

@@ -7,7 +7,7 @@ let nhm
 const customTranslators = {
   DIV:  ({ visitor }) => ({
     surroundingNewlines: 2,
-    postprocess: ({ nodeMetadata, node }) => {
+    postprocess: ({ content, nodeMetadata, node }) => {
       // <div class="admonitionblock note">
       if (node.classList.contains('admonitionblock')) {
 
@@ -16,13 +16,11 @@ const customTranslators = {
             find(v => v != 'admonitionblock') || 'NOTE'
             ).toUpperCase()
 
-        const content = (
-          nhm.translate(
-            node.querySelector('td:nth-child(2)')
-            .innerHTML
-          ).replace(/^/mg, '> '))
+        const admonition = node.querySelector('td:nth-child(2)')?.innerHTML || `BAD ADMONITION ${content}`
+        const body = (
+          nhm.translate(admonition).replace(/^/mg, '> '))
 
-        return `> [!${type}]\n${content}`
+        return `> [!${type}]\n${body}`
       }
     }
   })