return if MathJax not loaded

bnmnetp · bnmnetp · commit 271ad198bb9d · 2022-11-18T14:15:27.000-08:00
diff --git a/runestone/common/js/runestonebase.js b/runestone/common/js/runestonebase.js
@@ -443,6 +443,9 @@ export default class RunestoneBase {
     }
 
     queueMathJax(component) {
+        if (typeof(MathJax) === "undefined") {
+            return Promise.resolve(null);
+        }
         if (MathJax.version.substring(0, 1) === "2") {
             MathJax.Hub.Queue(["Typeset", MathJax.Hub, component]);
         } else {

Original file line number	Diff line number	Diff line change
`@@ -443,6 +443,9 @@ export default class RunestoneBase {`
`443`	`443`	`}`
`444`	`444`
`445`	`445`	`queueMathJax(component) {`
	`446`	`+ if (typeof(MathJax) === "undefined") {`
	`447`	`+ return Promise.resolve(null);`
	`448`	`+ }`
`446`	`449`	`if (MathJax.version.substring(0, 1) === "2") {`
`447`	`450`	`MathJax.Hub.Queue(["Typeset", MathJax.Hub, component]);`
`448`	`451`	`} else {`