fixup! refactor(*): replace HashMap with NgMap (former ES6Map)

Author: gkalpak

Diff for: src/apis.js

@@ -88,9 +88,19 @@ NgMapShim.prototype = {
   }
 };
 
-var NgMap = isFunction(window.Map) && toString.call(window.Map.prototype) === '[object Map]'
-  ? window.Map
-  : NgMapShim;
+// Support: Mobile Safari < 9
+function isNotSafari8BuggyImplementation(Map) {
+  // Although we don't need the tested feature (`.keys().next()`), its absence indicates a buggy
+  // implementation, such as the one of [Mobile] Safari 8, which sometimes leads to failures
+  // (e.g. failing to get a value associated with a jqLite collection).
+  var m = new Map();
+  return isFunction(m.keys) && isFunction(m.keys().next);
+}
+
+var NgMap = isFunction(window.Map) && toString.call(window.Map.prototype) === '[object Map]' &&
+            isNotSafari8BuggyImplementation(window.Map) ?
+                window.Map :
+                NgMapShim;
 
 var $$MapProvider = [/** @this */function() {
   this.$get = [function() {