Added guard against undefined versions

highcharts · Apr 26, 2023 · 15dc326 · 15dc326
1 parent 4ddeee8
commit 15dc326
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build.js b/build.js
@@ -214,7 +214,7 @@ function embed(version, scripts, out, fn, optionals) {
 
         let nversion = version;
 
-        if (nversion.indexOf('11') === 0) {
+        if (nversion && (nversion || '').indexOf('11') === 0) {
           nversion += '/es5/';
         }