# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1461212596 -7200
# Node ID 685193e0d79320b6786dceb4d1a925c18c02e830
# Parent  9ca946fc4f0172af253b907e1351e7c714648130
Convert undefined value read from arrays into null

diff -r 9ca946fc4f01 -r 685193e0d793 rt/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/lang/java_lang_String.js
--- a/rt/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/lang/java_lang_String.js	Tue Apr 19 07:24:30 2016 +0200
+++ b/rt/emul/mini/src/main/resources/org/apidesign/vm4brwsr/emul/lang/java_lang_String.js	Thu Apr 21 06:23:16 2016 +0200
@@ -4,10 +4,13 @@
 
 Object.defineProperty(Array, "at", { configurable: true, writable: true, value : function(arr, indx, value) {
   var prev = arr[indx];
-  if (typeof prev === 'undefined' && (indx < 0 || indx >= arr.length)) {
-    var e = vm.java_lang_ArrayIndexOutOfBoundsException(true);
-    e.constructor.cons__VLjava_lang_String_2.call(e, indx.toString());
-    throw e;
+  if (typeof prev === 'undefined') {
+    if (indx < 0 || indx >= arr.length) {
+      var e = vm.java_lang_ArrayIndexOutOfBoundsException(true);
+      e.constructor.cons__VLjava_lang_String_2.call(e, indx.toString());
+      throw e;
+    }
+    prev = null;
   }
   if (arguments.length === 3) {
     arr[indx] = value;