diff --git a/runtime/JavaScript/src/antlr4/atn/ParserATNSimulator.js b/runtime/JavaScript/src/antlr4/atn/ParserATNSimulator.js
index 9a262949f..b740ed92a 100644
--- a/runtime/JavaScript/src/antlr4/atn/ParserATNSimulator.js
+++ b/runtime/JavaScript/src/antlr4/atn/ParserATNSimulator.js
@@ -1258,10 +1258,10 @@ ParserATNSimulator.prototype.closureCheckingStopState = function(config, configs
                     }
                     continue;
                 }
-                returnState = this.atn.states[config.context.getReturnState(i)];
-                newContext = config.context.getParent(i); // "pop" return state
+                var returnState = this.atn.states[config.context.getReturnState(i)];
+                var newContext = config.context.getParent(i); // "pop" return state
                 var parms = {state:returnState, alt:config.alt, context:newContext, semanticContext:config.semanticContext};
-                c = new ATNConfig(parms, null);
+                var c = new ATNConfig(parms, null);
                 // While we have context to pop back from, we may have
                 // gotten that context AFTER having falling off a rule.
                 // Make sure we track that we are now out of context.
diff --git a/runtime/JavaScript/src/lib/require.js b/runtime/JavaScript/src/lib/require.js
index 9a8069c35..d14210d24 100644
--- a/runtime/JavaScript/src/lib/require.js
+++ b/runtime/JavaScript/src/lib/require.js
@@ -62,7 +62,13 @@
 //      anchor element as parser in that case. Thes breaks web worker support,
 //      but we don't care since these browsers also don't support web workers.
 
-    var parser = URL ? new URL(location.href) : document.createElement('A');
+    try {
+        var parser = new URL(location.href);
+    }
+    catch (e) {
+        console.warn("Honey: falling back to DOM workaround for URL parser ("+e+")");
+        parser = document.createElement('A');
+    }
 
 // INFO Module cache
 //      Contains getter functions for the exports objects of all the loaded
@@ -81,7 +87,7 @@
         delete cache.foo;
     }
     catch (e) {
-        console.warn("Honey: falling back to DOM workaround for defineProperty ("+e+")");
+        console.warn("Honey: falling back to DOM workaround for cache object ("+e+")");
         cache = document.createElement('DIV');
     }