workaround for latests JS script engine which cannot evaluate the toString() method for dynamically created class

Author: PhilippSalvisberg

sqlcl/format.js

@@ -759,8 +759,12 @@ var unregisterTvdFormat = function () {
         .stream().map(function(l) {return l.getClass()}).collect(javaCollectors.toSet());
     // re-register all commands except for class TvdFormat and remaining (not removed) listener classes
     for (var i in listeners) {
-        if (listeners.get(i).toString() !== "TvdFormat" && !remainingListeners.contains(listeners.get(i).getClass())) {
-            javaCommandRegistry.addForAllStmtsListener(listeners.get(i).getClass());
+        try {
+            if (listeners.get(i).toString() !== "TvdFormat" && !remainingListeners.contains(listeners.get(i).getClass())) {
+                javaCommandRegistry.addForAllStmtsListener(listeners.get(i).getClass());
+            }
+        } catch (e) {
+            // ignore, assume toString() cannot be evaluated and therefore a class that does not need to be registered.
         }
     }
 }