Fixed toHaveSize matcher on IE 10 & 11

src/core/base.js

@@ -148,6 +148,24 @@ getJasmineRequireObj().base = function(j$, jasmineGlobal) {
     );
   };
 
+  j$.isWeakMap = function(obj) {
+    return (
+      obj !== null &&
+      typeof obj !== 'undefined' &&
+      typeof jasmineGlobal.WeakMap !== 'undefined' &&
+      obj.constructor === jasmineGlobal.WeakMap
+    );
+  };
+
+  j$.isDataView = function(obj) {
+    return (
+      obj !== null &&
+      typeof obj !== 'undefined' &&
+      typeof jasmineGlobal.DataView !== 'undefined' &&
+      obj.constructor === jasmineGlobal.DataView
+    );
+  };
+
   j$.isPromise = function(obj) {
     return (
       typeof jasmineGlobal.Promise !== 'undefined' &&

src/core/matchers/toHaveSize.js

@@ -16,11 +16,11 @@ getJasmineRequireObj().toHaveSize = function(j$) {
             pass: false
           };
 
-        if (j$.isA_('WeakSet', actual) || j$.isA_('WeakMap', actual) || j$.isA_('DataView', actual)) {
+        if (j$.isA_('WeakSet', actual) || j$.isWeakMap(actual) || j$.isDataView(actual)) {
           throw new Error('Cannot get size of ' + actual + '.');
         }
 
-        if (actual instanceof Set || actual instanceof Map) {
+        if (j$.isSet(actual) || j$.isMap(actual)) {
           result.pass = actual.size === expected;
         } else if (isLength(actual.length)) {
           result.pass = actual.length === expected;