MathJax not present bug

thebe_lite/_static/sphinx-thebe.js

@@ -186,6 +186,7 @@ var configureThebe = () => {
       thebelab.events.listeners.status.clear(); // Remove further status message handling
       thebelab.on("status", function (evt, data) { // But we add one to trigger automatic Mathjax rendering
         if (data.subject == 'cell' && data.status == 'idle') {
+          if (window.MathJax === undefined) { return; }
           MathJax.typeset()
         }
       })
@@ -434,11 +435,13 @@ var initThebe = async () => {
   modifyDOMForThebe();
   await thebelab.bootstrap(thebeLiteConfig);
   
-  // Setup MathJax settings for handling Jupyter output
-  localStorage.setItem("MathJax-Menu-Settings", '{"renderer":"SVG"}')
-  MathJax.config.tex.inlineMath = [['$', '$']]                          // Include $ delimeter to indicate Maths (used by IPython)
-  MathJax.config.options.processHtmlClass += "|jp-OutputArea-output"    // Include Thebe output cells as containing Maths
-  MathJax.startup.getComponents()                                       // Reset all built-in components
+  if (window.MathJax !== undefined) { 
+    // Setup MathJax settings for handling Jupyter output
+    localStorage.setItem("MathJax-Menu-Settings", '{"renderer":"SVG"}')
+    MathJax.config.tex.inlineMath = [['$', '$']]                          // Include $ delimeter to indicate Maths (used by IPython)
+    MathJax.config.options.processHtmlClass += "|jp-OutputArea-output"    // Include Thebe output cells as containing Maths
+    MathJax.startup.getComponents()                                       // Reset all built-in components
+  }
   
 
   document.querySelectorAll(".keep").forEach((kept, _) => {