Merge branch 'ie11-maps-support' of https://github.com/Volox/jasmine into Volox-ie11-maps-support

- Merges #1477 from @Volox
- Fixes #1472

src/core/matchers/matchersUtil.js

@@ -213,7 +213,7 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       diffBuilder.record(a, b);
       return false;
     }
-    
+
     var aIsPromise = j$.isPromise(a);
     var bIsPromise = j$.isPromise(b);
     if (aIsPromise && bIsPromise) {
@@ -253,26 +253,34 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       if (!result) {
         return false;
       }
-    } else if (className == '[object Map]') {
+    } else if (j$.isMap(a) && j$.isMap(b)) {
       if (a.size != b.size) {
         diffBuilder.record(a, b);
         return false;
       }
 
+      var keysA = [];
+      var keysB = [];
+      a.forEach( function( valueA, keyA ) {
+        keysA.push( keyA );
+      });
+      b.forEach( function( valueB, keyB ) {
+        keysB.push( keyB );
+      });
+
       // For both sets of keys, check they map to equal values in both maps.
       // Keep track of corresponding keys (in insertion order) in order to handle asymmetric obj keys.
-      var mapKeys = [a.keys(), b.keys()];
-      var cmpKeys = [b.keys(), a.keys()];
-      var mapIter, mapKeyIt, mapKey, mapValueA, mapValueB;
-      var cmpIter, cmpKeyIt, cmpKey;
+      var mapKeys = [keysA, keysB];
+      var cmpKeys = [keysB, keysA];
+      var mapIter, mapKey, mapValueA, mapValueB;
+      var cmpIter, cmpKey;
       for (i = 0; result && i < mapKeys.length; i++) {
         mapIter = mapKeys[i];
         cmpIter = cmpKeys[i];
-        mapKeyIt = mapIter.next();
-        cmpKeyIt = cmpIter.next();
-        while (result && !mapKeyIt.done) {
-          mapKey = mapKeyIt.value;
-          cmpKey = cmpKeyIt.value;
+
+        for (var j = 0; result && j < mapIter.length; j++) {
+          mapKey = mapIter[j];
+          cmpKey = cmpIter[j];
           mapValueA = a.get(mapKey);
 
           // Only use the cmpKey when one of the keys is asymmetric and the corresponding key matches,
@@ -285,8 +293,6 @@ getJasmineRequireObj().matchersUtil = function(j$) {
             mapValueB = b.get(mapKey);
           }
           result = eq(mapValueA, mapValueB, aStack, bStack, customTesters, j$.NullDiffBuilder());
-          mapKeyIt = mapIter.next();
-          cmpKeyIt = cmpIter.next();
         }
       }