diff --git a/modules/angular2/src/change_detection/coalesce.ts b/modules/angular2/src/change_detection/coalesce.ts
index 041a3f64c0..53d1d24957 100644
--- a/modules/angular2/src/change_detection/coalesce.ts
+++ b/modules/angular2/src/change_detection/coalesce.ts
@@ -1,5 +1,5 @@
 import {isPresent} from 'angular2/src/facade/lang';
-import {List, ListWrapper, Map, MapWrapper} from 'angular2/src/facade/collection';
+import {List, ListWrapper, Map} from 'angular2/src/facade/collection';
 import {RecordType, ProtoRecord} from './proto_record';
 
 /**
@@ -14,7 +14,7 @@ import {RecordType, ProtoRecord} from './proto_record';
  */
 export function coalesce(records: List<ProtoRecord>): List<ProtoRecord> {
   var res: List<ProtoRecord> = [];
-  var indexMap: Map<number, number> = MapWrapper.create();
+  var indexMap: Map<number, number> = new Map<number, number>();
 
   for (var i = 0; i < records.length; ++i) {
     var r = records[i];
@@ -23,14 +23,14 @@ export function coalesce(records: List<ProtoRecord>): List<ProtoRecord> {
 
     if (isPresent(matchingRecord) && record.lastInBinding) {
       res.push(_selfRecord(record, matchingRecord.selfIndex, res.length + 1));
-      MapWrapper.set(indexMap, r.selfIndex, matchingRecord.selfIndex);
+      indexMap.set(r.selfIndex, matchingRecord.selfIndex);
 
     } else if (isPresent(matchingRecord) && !record.lastInBinding) {
-      MapWrapper.set(indexMap, r.selfIndex, matchingRecord.selfIndex);
+      indexMap.set(r.selfIndex, matchingRecord.selfIndex);
 
     } else {
       res.push(record);
-      MapWrapper.set(indexMap, r.selfIndex, record.selfIndex);
+      indexMap.set(r.selfIndex, record.selfIndex);
     }
   }
 
@@ -59,6 +59,6 @@ function _replaceIndices(r: ProtoRecord, selfIndex: number, indexMap: Map<any, a
 }
 
 function _map(indexMap: Map<any, any>, value: number) {
-  var r = MapWrapper.get(indexMap, value);
+  var r = indexMap.get(value);
   return isPresent(r) ? r : value;
 }
diff --git a/modules/angular2/src/change_detection/parser/locals.ts b/modules/angular2/src/change_detection/parser/locals.ts
index 04396ebd0e..b45ac4f569 100644
--- a/modules/angular2/src/change_detection/parser/locals.ts
+++ b/modules/angular2/src/change_detection/parser/locals.ts
@@ -18,7 +18,7 @@ export class Locals {
 
   get(name: string) {
     if (MapWrapper.contains(this.current, name)) {
-      return MapWrapper.get(this.current, name);
+      return this.current.get(name);
     }
 
     if (isPresent(this.parent)) {
@@ -33,7 +33,7 @@ export class Locals {
     // exposed to the public API.
     // TODO: vsavkin maybe it should check only the local map
     if (MapWrapper.contains(this.current, name)) {
-      MapWrapper.set(this.current, name, value);
+      this.current.set(name, value);
     } else {
       throw new BaseException(
           `Setting of new keys post-construction is not supported. Key: ${name}.`);
diff --git a/modules/angular2/src/change_detection/pipes/iterable_changes.ts b/modules/angular2/src/change_detection/pipes/iterable_changes.ts
index 8df8aabb3c..c51cf33697 100644
--- a/modules/angular2/src/change_detection/pipes/iterable_changes.ts
+++ b/modules/angular2/src/change_detection/pipes/iterable_changes.ts
@@ -574,16 +574,16 @@ class _DuplicateItemRecordList {
 }
 
 class _DuplicateMap {
-  map: Map<any, _DuplicateItemRecordList> = MapWrapper.create();
+  map: Map<any, _DuplicateItemRecordList> = new Map();
 
   put(record: CollectionChangeRecord) {
     // todo(vicb) handle corner cases
     var key = getMapKey(record.item);
 
-    var duplicates = MapWrapper.get(this.map, key);
+    var duplicates = this.map.get(key);
     if (!isPresent(duplicates)) {
       duplicates = new _DuplicateItemRecordList();
-      MapWrapper.set(this.map, key, duplicates);
+      this.map.set(key, duplicates);
     }
     duplicates.add(record);
   }
@@ -598,7 +598,7 @@ class _DuplicateMap {
   get(value, afterIndex = null): CollectionChangeRecord {
     var key = getMapKey(value);
 
-    var recordList = MapWrapper.get(this.map, key);
+    var recordList = this.map.get(key);
     return isBlank(recordList) ? null : recordList.get(value, afterIndex);
   }
 
@@ -611,7 +611,7 @@ class _DuplicateMap {
     var key = getMapKey(record.item);
     // todo(vicb)
     // assert(this.map.containsKey(key));
-    var recordList: _DuplicateItemRecordList = MapWrapper.get(this.map, key);
+    var recordList: _DuplicateItemRecordList = this.map.get(key);
     // Remove the list of duplicates when it gets empty
     if (recordList.remove(record)) {
       MapWrapper.delete(this.map, key);
diff --git a/modules/angular2/src/change_detection/pipes/keyvalue_changes.ts b/modules/angular2/src/change_detection/pipes/keyvalue_changes.ts
index cb6471379e..e015a2bfde 100644
--- a/modules/angular2/src/change_detection/pipes/keyvalue_changes.ts
+++ b/modules/angular2/src/change_detection/pipes/keyvalue_changes.ts
@@ -19,7 +19,7 @@ export class KeyValueChangesFactory extends PipeFactory {
  * @exportedAs angular2/pipes
  */
 export class KeyValueChanges extends Pipe {
-  private _records: Map<any, any> = MapWrapper.create();
+  private _records: Map<any, any> = new Map();
   private _mapHead: KVChangeRecord = null;
   private _previousMapHead: KVChangeRecord = null;
   private _changesHead: KVChangeRecord = null;
@@ -106,10 +106,10 @@ export class KeyValueChanges extends Pipe {
           this._addToRemovals(oldSeqRecord);
         }
         if (MapWrapper.contains(records, key)) {
-          newSeqRecord = MapWrapper.get(records, key);
+          newSeqRecord = records.get(key);
         } else {
           newSeqRecord = new KVChangeRecord(key);
-          MapWrapper.set(records, key, newSeqRecord);
+          records.set(key, newSeqRecord);
           newSeqRecord.currentValue = value;
           this._addToAdditions(newSeqRecord);
         }
diff --git a/modules/angular2/src/core/compiler/compiler.ts b/modules/angular2/src/core/compiler/compiler.ts
index 19a3bf95c6..bd835d9761 100644
--- a/modules/angular2/src/core/compiler/compiler.ts
+++ b/modules/angular2/src/core/compiler/compiler.ts
@@ -32,24 +32,22 @@ import * as renderApi from 'angular2/src/render/api';
  */
 @Injectable()
 export class CompilerCache {
-  _cache: Map<Type, AppProtoView> = MapWrapper.create();
-  _hostCache: Map<Type, AppProtoView> = MapWrapper.create();
+  _cache: Map<Type, AppProtoView> = new Map();
+  _hostCache: Map<Type, AppProtoView> = new Map();
 
-  set(component: Type, protoView: AppProtoView): void {
-    MapWrapper.set(this._cache, component, protoView);
-  }
+  set(component: Type, protoView: AppProtoView): void { this._cache.set(component, protoView); }
 
   get(component: Type): AppProtoView {
-    var result = MapWrapper.get(this._cache, component);
+    var result = this._cache.get(component);
     return normalizeBlank(result);
   }
 
   setHost(component: Type, protoView: AppProtoView): void {
-    MapWrapper.set(this._hostCache, component, protoView);
+    this._hostCache.set(component, protoView);
   }
 
   getHost(component: Type): AppProtoView {
-    var result = MapWrapper.get(this._hostCache, component);
+    var result = this._hostCache.get(component);
     return normalizeBlank(result);
   }
 
@@ -79,7 +77,7 @@ export class Compiler {
               render: renderApi.RenderCompiler, protoViewFactory: ProtoViewFactory) {
     this._reader = reader;
     this._compilerCache = cache;
-    this._compiling = MapWrapper.create();
+    this._compiling = new Map();
     this._templateResolver = templateResolver;
     this._componentUrlMapper = componentUrlMapper;
     this._urlResolver = urlResolver;
@@ -132,7 +130,7 @@ export class Compiler {
       return protoView;
     }
 
-    var pvPromise = MapWrapper.get(this._compiling, component);
+    var pvPromise = this._compiling.get(component);
     if (isPresent(pvPromise)) {
       // The component is already being compiled, attach to the existing Promise
       // instead of re-compiling the component.
@@ -160,7 +158,7 @@ export class Compiler {
               return this._compileNestedProtoViews(componentBinding, renderPv, boundDirectives);
             });
 
-    MapWrapper.set(this._compiling, component, pvPromise);
+    this._compiling.set(component, pvPromise);
     return pvPromise;
   }
 
diff --git a/modules/angular2/src/core/compiler/component_url_mapper.ts b/modules/angular2/src/core/compiler/component_url_mapper.ts
index 8326a1b699..038ff34af3 100644
--- a/modules/angular2/src/core/compiler/component_url_mapper.ts
+++ b/modules/angular2/src/core/compiler/component_url_mapper.ts
@@ -16,15 +16,13 @@ export class RuntimeComponentUrlMapper extends ComponentUrlMapper {
 
   constructor() {
     super();
-    this._componentUrls = MapWrapper.create();
+    this._componentUrls = new Map();
   }
 
-  setComponentUrl(component: Type, url: string) {
-    MapWrapper.set(this._componentUrls, component, url);
-  }
+  setComponentUrl(component: Type, url: string) { this._componentUrls.set(component, url); }
 
   getUrl(component: Type): string {
-    var url = MapWrapper.get(this._componentUrls, component);
+    var url = this._componentUrls.get(component);
     if (isPresent(url)) return url;
     return super.getUrl(component);
   }
diff --git a/modules/angular2/src/core/compiler/element_injector.ts b/modules/angular2/src/core/compiler/element_injector.ts
index c41b4b890c..970305ec68 100644
--- a/modules/angular2/src/core/compiler/element_injector.ts
+++ b/modules/angular2/src/core/compiler/element_injector.ts
@@ -234,7 +234,7 @@ export class DirectiveBinding extends ResolvedBinding {
   get hostActions(): Map<string, string> {
     return isPresent(this.metadata) && isPresent(this.metadata.hostActions) ?
                this.metadata.hostActions :
-               MapWrapper.create();
+               new Map();
   }
 
   get changeDetection() { return this.metadata.changeDetection; }
@@ -418,14 +418,14 @@ export class ProtoElementInjector {
   private static _createHostInjectorBindingData(dirBindings: List<ResolvedBinding>,
                                                 bd: List<BindingData>,
                                                 firstBindingIsComponent: boolean) {
-    var visitedIds: Map<number, boolean> = MapWrapper.create();
+    var visitedIds: Map<number, boolean> = new Map();
     ListWrapper.forEach(dirBindings, dirBinding => {
       ListWrapper.forEach(dirBinding.resolvedHostInjectables, b => {
         if (MapWrapper.contains(visitedIds, b.key.id)) {
           throw new BaseException(
               `Multiple directives defined the same host injectable: "${stringify(b.key.token)}"`);
         }
-        MapWrapper.set(visitedIds, b.key.id, true);
+        visitedIds.set(b.key.id, true);
         bd.push(ProtoElementInjector._createBindingData(firstBindingIsComponent, dirBinding,
                                                         dirBindings,
                                                         ProtoElementInjector._createBinding(b)));
@@ -734,7 +734,7 @@ export class ElementInjector extends TreeNode<ElementInjector> {
   }
 
   getVariableBinding(name: string): any {
-    var index = MapWrapper.get(this._proto.directiveVariableBindings, name);
+    var index = this._proto.directiveVariableBindings.get(name);
     return isPresent(index) ? this.getDirectiveAtIndex(<number>index) : this.getElementRef();
   }
 
@@ -892,7 +892,7 @@ export class ElementInjector extends TreeNode<ElementInjector> {
   private _buildAttribute(dep: DirectiveDependency): string {
     var attributes = this._proto.attributes;
     if (isPresent(attributes) && MapWrapper.contains(attributes, dep.attributeName)) {
-      return MapWrapper.get(attributes, dep.attributeName);
+      return attributes.get(dep.attributeName);
     } else {
       return null;
     }
diff --git a/modules/angular2/src/core/compiler/proto_view_factory.ts b/modules/angular2/src/core/compiler/proto_view_factory.ts
index 63d6810f3b..86094974f5 100644
--- a/modules/angular2/src/core/compiler/proto_view_factory.ts
+++ b/modules/angular2/src/core/compiler/proto_view_factory.ts
@@ -20,7 +20,7 @@ import {ElementBinder} from './element_binder';
 import {ProtoElementInjector, DirectiveBinding} from './element_injector';
 
 class BindingRecordsCreator {
-  _directiveRecordsMap: Map<number, DirectiveRecord> = MapWrapper.create();
+  _directiveRecordsMap: Map<number, DirectiveRecord> = new Map();
   _textNodeIndex: number = 0;
 
   getBindingRecords(elementBinders: List<renderApi.ElementBinder>,
@@ -116,17 +116,18 @@ class BindingRecordsCreator {
     var id = boundElementIndex * 100 + directiveIndex;
 
     if (!MapWrapper.contains(this._directiveRecordsMap, id)) {
-      MapWrapper.set(this._directiveRecordsMap, id, new DirectiveRecord({
-                       directiveIndex: new DirectiveIndex(boundElementIndex, directiveIndex),
-                       callOnAllChangesDone: directiveMetadata.callOnAllChangesDone,
-                       callOnChange: directiveMetadata.callOnChange,
-                       callOnCheck: directiveMetadata.callOnCheck,
-                       callOnInit: directiveMetadata.callOnInit,
-                       changeDetection: directiveMetadata.changeDetection
-                     }));
+      this._directiveRecordsMap.set(
+          id, new DirectiveRecord({
+            directiveIndex: new DirectiveIndex(boundElementIndex, directiveIndex),
+            callOnAllChangesDone: directiveMetadata.callOnAllChangesDone,
+            callOnChange: directiveMetadata.callOnChange,
+            callOnCheck: directiveMetadata.callOnCheck,
+            callOnInit: directiveMetadata.callOnInit,
+            changeDetection: directiveMetadata.changeDetection
+          }));
     }
 
-    return MapWrapper.get(this._directiveRecordsMap, id);
+    return this._directiveRecordsMap.get(id);
   }
 }
 
@@ -245,10 +246,9 @@ function _collectNestedProtoViewsVariableBindings(
 }
 
 function _createVariableBindings(renderProtoView): Map<string, string> {
-  var variableBindings = MapWrapper.create();
-  MapWrapper.forEach(renderProtoView.variableBindings, (mappedName, varName) => {
-    MapWrapper.set(variableBindings, varName, mappedName);
-  });
+  var variableBindings = new Map();
+  MapWrapper.forEach(renderProtoView.variableBindings,
+                     (mappedName, varName) => { variableBindings.set(varName, mappedName); });
   return variableBindings;
 }
 
@@ -276,12 +276,11 @@ function _createVariableNames(parentVariableNames, renderProtoView): List<string
 
 export function createVariableLocations(
     elementBinders: List<renderApi.ElementBinder>): Map<string, number> {
-  var variableLocations = MapWrapper.create();
+  var variableLocations = new Map();
   for (var i = 0; i < elementBinders.length; i++) {
     var binder = elementBinders[i];
-    MapWrapper.forEach(binder.variableBindings, (mappedName, varName) => {
-      MapWrapper.set(variableLocations, mappedName, i);
-    });
+    MapWrapper.forEach(binder.variableBindings,
+                       (mappedName, varName) => { variableLocations.set(mappedName, i); });
   }
   return variableLocations;
 }
@@ -348,7 +347,7 @@ function _createProtoElementInjector(binderIndex, parentPeiWithDistance, renderE
   return protoElementInjector;
 }
 
-function _createElementBinder(protoView, boundElementIndex, renderElementBinder,
+function _createElementBinder(protoView: AppProtoView, boundElementIndex, renderElementBinder,
                               protoElementInjector, componentDirectiveBinding,
                               directiveBindings): ElementBinder {
   var parent = null;
@@ -363,19 +362,18 @@ function _createElementBinder(protoView, boundElementIndex, renderElementBinder,
   // in order to prevent new variables from being set later in the lifecycle. Since we don't want
   // to actually create variable bindings for the $implicit bindings, add to the
   // protoLocals manually.
-  MapWrapper.forEach(renderElementBinder.variableBindings, (mappedName, varName) => {
-    MapWrapper.set(protoView.protoLocals, mappedName, null);
-  });
+  MapWrapper.forEach(renderElementBinder.variableBindings,
+                     (mappedName, varName) => { protoView.protoLocals.set(mappedName, null); });
   return elBinder;
 }
 
 export function createDirectiveVariableBindings(
     renderElementBinder: renderApi.ElementBinder,
     directiveBindings: List<DirectiveBinding>): Map<string, number> {
-  var directiveVariableBindings = MapWrapper.create();
+  var directiveVariableBindings = new Map();
   MapWrapper.forEach(renderElementBinder.variableBindings, (templateName, exportAs) => {
     var dirIndex = _findDirectiveIndexByExportAs(renderElementBinder, directiveBindings, exportAs);
-    MapWrapper.set(directiveVariableBindings, templateName, dirIndex);
+    directiveVariableBindings.set(templateName, dirIndex);
   });
   return directiveVariableBindings;
 }
diff --git a/modules/angular2/src/core/compiler/template_resolver.ts b/modules/angular2/src/core/compiler/template_resolver.ts
index f0548a55d8..6125f632d6 100644
--- a/modules/angular2/src/core/compiler/template_resolver.ts
+++ b/modules/angular2/src/core/compiler/template_resolver.ts
@@ -9,14 +9,14 @@ import {reflector} from 'angular2/src/reflection/reflection';
 
 @Injectable()
 export class TemplateResolver {
-  _cache: Map<Type, /*node*/ any> = MapWrapper.create();
+  _cache: Map<Type, /*node*/ any> = new Map();
 
   resolve(component: Type): View {
-    var view = MapWrapper.get(this._cache, component);
+    var view = this._cache.get(component);
 
     if (isBlank(view)) {
       view = this._resolve(component);
-      MapWrapper.set(this._cache, component, view);
+      this._cache.set(component, view);
     }
 
     return view;
diff --git a/modules/angular2/src/core/compiler/view.ts b/modules/angular2/src/core/compiler/view.ts
index 3a4eef8f8d..9ef1ca5aa7 100644
--- a/modules/angular2/src/core/compiler/view.ts
+++ b/modules/angular2/src/core/compiler/view.ts
@@ -76,7 +76,7 @@ export class AppView implements ChangeDispatcher, EventDispatcher {
     if (!MapWrapper.contains(this.proto.variableBindings, contextName)) {
       return;
     }
-    var templateName = MapWrapper.get(this.proto.variableBindings, contextName);
+    var templateName = this.proto.variableBindings.get(contextName);
     this.locals.set(templateName, value);
   }
 
@@ -92,8 +92,8 @@ export class AppView implements ChangeDispatcher, EventDispatcher {
    * @param {int} binderIndex
    */
   triggerEventHandlers(eventName: string, eventObj, binderIndex: int): void {
-    var locals = MapWrapper.create();
-    MapWrapper.set(locals, '$event', eventObj);
+    var locals = new Map();
+    locals.set('$event', eventObj);
     this.dispatchEvent(binderIndex, eventName, locals);
   }
 
@@ -162,16 +162,15 @@ export class AppView implements ChangeDispatcher, EventDispatcher {
  */
 export class AppProtoView {
   elementBinders: List<ElementBinder> = [];
-  protoLocals: Map<string, any> = MapWrapper.create();
+  protoLocals: Map<string, any> = new Map();
 
   constructor(public render: renderApi.RenderProtoViewRef,
               public protoChangeDetector: ProtoChangeDetector,
               public variableBindings: Map<string, string>,
               public variableLocations: Map<string, number>) {
     if (isPresent(variableBindings)) {
-      MapWrapper.forEach(variableBindings, (templateName, _) => {
-        MapWrapper.set(this.protoLocals, templateName, null);
-      });
+      MapWrapper.forEach(variableBindings,
+                         (templateName, _) => { this.protoLocals.set(templateName, null); });
     }
   }
 
@@ -211,10 +210,10 @@ export class AppProtoView {
       var eventName = eventBinding.fullName;
       var event = StringMapWrapper.get(events, eventName);
       if (isBlank(event)) {
-        event = MapWrapper.create();
+        event = new Map();
         StringMapWrapper.set(events, eventName, event);
       }
-      MapWrapper.set(event, directiveIndex, eventBinding.source);
+      event.set(directiveIndex, eventBinding.source);
     }
   }
 }
diff --git a/modules/angular2/src/core/compiler/view_manager.ts b/modules/angular2/src/core/compiler/view_manager.ts
index 54c3816df3..31b04e5112 100644
--- a/modules/angular2/src/core/compiler/view_manager.ts
+++ b/modules/angular2/src/core/compiler/view_manager.ts
@@ -8,7 +8,6 @@ import {Renderer, RenderViewRef} from 'angular2/src/render/api';
 import {AppViewManagerUtils} from './view_manager_utils';
 import {AppViewPool} from './view_pool';
 import {AppViewListener} from './view_listener';
-import {MapWrapper} from 'angular2/src/facade/collection';
 
 /**
  * Entry point for creating, moving views in the view hierarchy and destroying views.
@@ -42,7 +41,7 @@ export class AppViewManager {
     if (isBlank(componentView)) {
       throw new BaseException(`There is no component directive at element ${boundElementIndex}`);
     }
-    var elementIndex = MapWrapper.get(componentView.proto.variableLocations, variableName);
+    var elementIndex = componentView.proto.variableLocations.get(variableName);
     if (isBlank(elementIndex)) {
       throw new BaseException(`Could not find variable ${variableName}`);
     }
diff --git a/modules/angular2/src/core/compiler/view_pool.ts b/modules/angular2/src/core/compiler/view_pool.ts
index 5fd4047ddb..b1369f94ef 100644
--- a/modules/angular2/src/core/compiler/view_pool.ts
+++ b/modules/angular2/src/core/compiler/view_pool.ts
@@ -10,15 +10,14 @@ export const APP_VIEW_POOL_CAPACITY = CONST_EXPR(new OpaqueToken('AppViewPool.vi
 @Injectable()
 export class AppViewPool {
   _poolCapacityPerProtoView: number;
-  _pooledViewsPerProtoView: Map<viewModule.AppProtoView, List<viewModule.AppView>> =
-      MapWrapper.create();
+  _pooledViewsPerProtoView: Map<viewModule.AppProtoView, List<viewModule.AppView>> = new Map();
 
   constructor(@Inject(APP_VIEW_POOL_CAPACITY) poolCapacityPerProtoView) {
     this._poolCapacityPerProtoView = poolCapacityPerProtoView;
   }
 
   getView(protoView: viewModule.AppProtoView): viewModule.AppView {
-    var pooledViews = MapWrapper.get(this._pooledViewsPerProtoView, protoView);
+    var pooledViews = this._pooledViewsPerProtoView.get(protoView);
     if (isPresent(pooledViews) && pooledViews.length > 0) {
       return ListWrapper.removeLast(pooledViews);
     }
@@ -27,10 +26,10 @@ export class AppViewPool {
 
   returnView(view: viewModule.AppView): boolean {
     var protoView = view.proto;
-    var pooledViews = MapWrapper.get(this._pooledViewsPerProtoView, protoView);
+    var pooledViews = this._pooledViewsPerProtoView.get(protoView);
     if (isBlank(pooledViews)) {
       pooledViews = [];
-      MapWrapper.set(this._pooledViewsPerProtoView, protoView, pooledViews);
+      this._pooledViewsPerProtoView.set(protoView, pooledViews);
     }
     var haveRemainingCapacity = pooledViews.length < this._poolCapacityPerProtoView;
     if (haveRemainingCapacity) {
diff --git a/modules/angular2/src/core/testability/testability.ts b/modules/angular2/src/core/testability/testability.ts
index 866c1a4361..70eea10336 100644
--- a/modules/angular2/src/core/testability/testability.ts
+++ b/modules/angular2/src/core/testability/testability.ts
@@ -58,13 +58,13 @@ export class TestabilityRegistry {
   _applications: Map<any, Testability>;
 
   constructor() {
-    this._applications = MapWrapper.create();
+    this._applications = new Map();
 
     getTestabilityModule.GetTestability.addToWindow(this);
   }
 
   registerApplication(token, testability: Testability) {
-    MapWrapper.set(this._applications, token, testability);
+    this._applications.set(token, testability);
   }
 
   findTestabilityInTree(elem): Testability {
@@ -72,7 +72,7 @@ export class TestabilityRegistry {
       return null;
     }
     if (MapWrapper.contains(this._applications, elem)) {
-      return MapWrapper.get(this._applications, elem);
+      return this._applications.get(elem);
     }
     if (DOM.isShadowRoot(elem)) {
       return this.findTestabilityInTree(DOM.getHost(elem));
diff --git a/modules/angular2/src/debug/debug_element_view_listener.ts b/modules/angular2/src/debug/debug_element_view_listener.ts
index 938ed22281..442a45944c 100644
--- a/modules/angular2/src/debug/debug_element_view_listener.ts
+++ b/modules/angular2/src/debug/debug_element_view_listener.ts
@@ -20,8 +20,9 @@ var NG_ID_SEPARATOR_RE = RegExpWrapper.create('#');
 var NG_ID_SEPARATOR = '#';
 
 // Need to keep the views in a global Map so that multiple angular apps are supported
-var _allIdsByView: Map<AppView, number> = CONST_EXPR(MapWrapper.create());
-var _allViewsById: Map<number, AppView> = CONST_EXPR(MapWrapper.create());
+var _allIdsByView = new Map<AppView, number>();
+var _allViewsById = new Map<number, AppView>();
+
 var _nextId = 0;
 
 function _setElementId(element, indices: List<number>) {
@@ -43,7 +44,7 @@ function _getElementId(element): List<number> {
 export function inspectDomElement(element): DebugElement {
   var elId = _getElementId(element);
   if (isPresent(elId)) {
-    var view = MapWrapper.get(_allViewsById, elId[0]);
+    var view = _allViewsById.get(elId[0]);
     if (isPresent(view)) {
       return new DebugElement(view, elId[1]);
     }
@@ -57,8 +58,8 @@ export class DebugElementViewListener implements AppViewListener {
 
   viewCreated(view: AppView) {
     var viewId = _nextId++;
-    MapWrapper.set(_allViewsById, viewId, view);
-    MapWrapper.set(_allIdsByView, view, viewId);
+    _allViewsById.set(viewId, view);
+    _allIdsByView.set(view, viewId);
     var renderView = resolveInternalDomView(view.render);
     for (var i = 0; i < renderView.boundElements.length; i++) {
       _setElementId(renderView.boundElements[i].element, [viewId, i]);
@@ -66,7 +67,7 @@ export class DebugElementViewListener implements AppViewListener {
   }
 
   viewDestroyed(view: AppView) {
-    var viewId = MapWrapper.get(_allIdsByView, view);
+    var viewId = _allIdsByView.get(view);
     MapWrapper.delete(_allIdsByView, view);
     MapWrapper.delete(_allViewsById, viewId);
   }
diff --git a/modules/angular2/src/di/injector.ts b/modules/angular2/src/di/injector.ts
index a9d0e969c3..8ee63b5e2d 100644
--- a/modules/angular2/src/di/injector.ts
+++ b/modules/angular2/src/di/injector.ts
@@ -89,7 +89,7 @@ export class Injector {
    */
   static resolve(bindings: List<Type | Binding | List<any>>): List<ResolvedBinding> {
     var resolvedBindings = resolveBindings(bindings);
-    var flatten = _flattenBindings(resolvedBindings, MapWrapper.create());
+    var flatten = _flattenBindings(resolvedBindings, new Map());
     return _createListOfBindings(flatten);
   }
 
@@ -389,7 +389,7 @@ export function resolveBindings(bindings: List<Type | Binding | List<any>>): Lis
 }
 
 function flattenBindings(bindings: List<ResolvedBinding>): List<ResolvedBinding> {
-  var map = _flattenBindings(bindings, MapWrapper.create());
+  var map = _flattenBindings(bindings, new Map());
   var res = [];
   MapWrapper.forEach(map, (binding, keyId) => res.push(binding));
   return res;
@@ -406,7 +406,7 @@ function _flattenBindings(bindings: List<ResolvedBinding | List<any>>,
                           res: Map<number, ResolvedBinding>): Map<number, ResolvedBinding> {
   ListWrapper.forEach(bindings, function(b) {
     if (b instanceof ResolvedBinding) {
-      MapWrapper.set(res, b.key.id, b);
+      res.set(b.key.id, b);
     } else if (b instanceof List) {
       _flattenBindings(b, res);
     }
diff --git a/modules/angular2/src/di/key.ts b/modules/angular2/src/di/key.ts
index 6b2627d09f..d19358ab35 100644
--- a/modules/angular2/src/di/key.ts
+++ b/modules/angular2/src/di/key.ts
@@ -44,7 +44,7 @@ export class Key {
  * @private
  */
 export class KeyRegistry {
-  private _allKeys: Map<Object, Key> = MapWrapper.create();
+  private _allKeys: Map<Object, Key> = new Map();
 
   get(token: Object): Key {
     if (token instanceof Key) return token;
@@ -57,11 +57,11 @@ export class KeyRegistry {
     token = theToken;
 
     if (MapWrapper.contains(this._allKeys, token)) {
-      return MapWrapper.get(this._allKeys, token);
+      return this._allKeys.get(token);
     }
 
     var newKey = new Key(token, Key.numberOfKeys);
-    MapWrapper.set(this._allKeys, token, newKey);
+    this._allKeys.set(token, newKey);
     return newKey;
   }
 
diff --git a/modules/angular2/src/directives/ng_switch.ts b/modules/angular2/src/directives/ng_switch.ts
index 2ece6d28de..24268fa65d 100644
--- a/modules/angular2/src/directives/ng_switch.ts
+++ b/modules/angular2/src/directives/ng_switch.ts
@@ -52,7 +52,7 @@ export class NgSwitch {
   _activeViews: List<SwitchView>;
 
   constructor() {
-    this._valueViews = MapWrapper.create();
+    this._valueViews = new Map();
     this._activeViews = [];
     this._useDefault = false;
   }
@@ -63,10 +63,10 @@ export class NgSwitch {
 
     // Add the ViewContainers matching the value (with a fallback to default)
     this._useDefault = false;
-    var views = MapWrapper.get(this._valueViews, value);
+    var views = this._valueViews.get(value);
     if (isBlank(views)) {
       this._useDefault = true;
-      views = normalizeBlank(MapWrapper.get(this._valueViews, _whenDefault));
+      views = normalizeBlank(this._valueViews.get(_whenDefault));
     }
     this._activateViews(views);
 
@@ -92,7 +92,7 @@ export class NgSwitch {
     // Switch to default when there is no more active ViewContainers
     if (this._activeViews.length === 0 && !this._useDefault) {
       this._useDefault = true;
-      this._activateViews(MapWrapper.get(this._valueViews, _whenDefault));
+      this._activateViews(this._valueViews.get(_whenDefault));
     }
   }
 
@@ -115,10 +115,10 @@ export class NgSwitch {
   }
 
   _registerView(value, view: SwitchView): void {
-    var views = MapWrapper.get(this._valueViews, value);
+    var views = this._valueViews.get(value);
     if (isBlank(views)) {
       views = [];
-      MapWrapper.set(this._valueViews, value, views);
+      this._valueViews.set(value, views);
     }
     views.push(view);
   }
@@ -126,7 +126,7 @@ export class NgSwitch {
   _deregisterView(value, view: SwitchView): void {
     // `_whenDefault` is used a marker for non-registered whens
     if (value == _whenDefault) return;
-    var views = MapWrapper.get(this._valueViews, value);
+    var views = this._valueViews.get(value);
     if (views.length == 1) {
       MapWrapper.delete(this._valueViews, value);
     } else {
diff --git a/modules/angular2/src/dom/browser_adapter.ts b/modules/angular2/src/dom/browser_adapter.ts
index 99e79e4132..e055873aa1 100644
--- a/modules/angular2/src/dom/browser_adapter.ts
+++ b/modules/angular2/src/dom/browser_adapter.ts
@@ -168,11 +168,11 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
   getStyle(element, stylename: string) { return element.style[stylename]; }
   tagName(element): string { return element.tagName; }
   attributeMap(element) {
-    var res = MapWrapper.create();
+    var res = new Map();
     var elAttrs = element.attributes;
     for (var i = 0; i < elAttrs.length; i++) {
       var attrib = elAttrs[i];
-      MapWrapper.set(res, attrib.name, attrib.value);
+      res.set(attrib.name, attrib.value);
     }
     return res;
   }
diff --git a/modules/angular2/src/dom/parse5_adapter.ts b/modules/angular2/src/dom/parse5_adapter.ts
index a1e137987d..936f60f59a 100644
--- a/modules/angular2/src/dom/parse5_adapter.ts
+++ b/modules/angular2/src/dom/parse5_adapter.ts
@@ -339,11 +339,11 @@ export class Parse5DomAdapter extends DomAdapter {
   }
   tagName(element): string { return element.tagName == "style" ? "STYLE" : element.tagName; }
   attributeMap(element) {
-    var res = MapWrapper.create();
+    var res = new Map();
     var elAttrs = treeAdapter.getAttrList(element);
     for (var i = 0; i < elAttrs.length; i++) {
       var attrib = elAttrs[i];
-      MapWrapper.set(res, attrib.name, attrib.value);
+      res.set(attrib.name, attrib.value);
     }
     return res;
   }
diff --git a/modules/angular2/src/facade/collection.dart b/modules/angular2/src/facade/collection.dart
index 6682bce221..099dd1efe9 100644
--- a/modules/angular2/src/facade/collection.dart
+++ b/modules/angular2/src/facade/collection.dart
@@ -30,17 +30,12 @@ class IterableMap extends IterableBase<List> {
 }
 
 class MapWrapper {
-  static Map create() => {};
   static Map clone(Map m) => new Map.from(m);
   static Map createFromStringMap(Map m) => m;
   static Map createFromPairs(List pairs) => pairs.fold({}, (m, p) {
     m[p[0]] = p[1];
     return m;
   });
-  static get(Map m, k) => m[k];
-  static void set(Map m, k, v) {
-    m[k] = v;
-  }
   static contains(Map m, k) => m.containsKey(k);
   static forEach(Map m, fn(v, k)) {
     m.forEach((k, v) => fn(v, k));
diff --git a/modules/angular2/src/facade/collection.ts b/modules/angular2/src/facade/collection.ts
index 3e50ff6ece..48a21268ca 100644
--- a/modules/angular2/src/facade/collection.ts
+++ b/modules/angular2/src/facade/collection.ts
@@ -55,18 +55,15 @@ var _clearValues: {(m: Map<any, any>)} = (function() {
 })();
 
 export class MapWrapper {
-  static create(): Map<any, any> { return new Map(); }
   static clone<K, V>(m: Map<K, V>): Map<K, V> { return createMapFromMap(m); }
   static createFromStringMap(stringMap): Map<string, any> {
-    var result = MapWrapper.create();
+    var result = new Map();
     for (var prop in stringMap) {
-      MapWrapper.set(result, prop, stringMap[prop]);
+      result.set(prop, stringMap[prop]);
     }
     return result;
   }
   static createFromPairs(pairs: List<any>): Map<any, any> { return createMapFromPairs(pairs); }
-  static get<K, V>(m: Map<K, V>, k: K): V { return m.get(k); }
-  static set<K, V>(m: Map<K, V>, k: K, v: V) { m.set(k, v); }
   static contains<K>(m: Map<K, any>, k: K) { return m.has(k); }
   static forEach<K, V>(m: Map<K, V>, fn: /*(V, K) => void*/ Function) { m.forEach(<any>fn); }
   static size(m: Map<any, any>) { return m.size; }
diff --git a/modules/angular2/src/http/headers.ts b/modules/angular2/src/http/headers.ts
index 16a6ec099a..cf0c6efa0d 100644
--- a/modules/angular2/src/http/headers.ts
+++ b/modules/angular2/src/http/headers.ts
@@ -23,7 +23,7 @@ export class Headers {
   _headersMap: Map<string, List<string>>;
   constructor(headers?: Headers | Object) {
     if (isBlank(headers)) {
-      this._headersMap = MapWrapper.create();
+      this._headersMap = new Map();
       return;
     }
 
@@ -35,25 +35,23 @@ export class Headers {
         if (!isListLikeIterable(v)) {
           var list = [];
           list.push(v);
-          MapWrapper.set(this._headersMap, k, list);
+          this._headersMap.set(k, list);
         }
       });
     }
   }
 
   append(name: string, value: string): void {
-    var list = MapWrapper.get(this._headersMap, name) || [];
+    var list = this._headersMap.get(name) || [];
     list.push(value);
-    MapWrapper.set(this._headersMap, name, list);
+    this._headersMap.set(name, list);
   }
 
   delete (name: string): void { MapWrapper.delete(this._headersMap, name); }
 
   forEach(fn: Function) { return MapWrapper.forEach(this._headersMap, fn); }
 
-  get(header: string): string {
-    return ListWrapper.first(MapWrapper.get(this._headersMap, header));
-  }
+  get(header: string): string { return ListWrapper.first(this._headersMap.get(header)); }
 
   has(header: string) { return MapWrapper.contains(this._headersMap, header); }
 
@@ -68,12 +66,12 @@ export class Headers {
       list.push(ListWrapper.toString((<List<string>>value)));
     }
 
-    MapWrapper.set(this._headersMap, header, list);
+    this._headersMap.set(header, list);
   }
 
   values() { return MapWrapper.values(this._headersMap); }
 
-  getAll(header: string): Array<string> { return MapWrapper.get(this._headersMap, header) || []; }
+  getAll(header: string): Array<string> { return this._headersMap.get(header) || []; }
 
   entries() { throw new BaseException('"entries" method is not implemented on Headers class'); }
 }
diff --git a/modules/angular2/src/http/url_search_params.ts b/modules/angular2/src/http/url_search_params.ts
index 86a04ae50f..becf9e88f4 100644
--- a/modules/angular2/src/http/url_search_params.ts
+++ b/modules/angular2/src/http/url_search_params.ts
@@ -2,15 +2,15 @@ import {isPresent, isBlank, StringWrapper} from 'angular2/src/facade/lang';
 import {Map, MapWrapper, List, ListWrapper} from 'angular2/src/facade/collection';
 
 function paramParser(rawParams: string): Map<string, List<string>> {
-  var map: Map<string, List<string>> = MapWrapper.create();
+  var map: Map<string, List<string>> = new Map();
   var params: List<string> = StringWrapper.split(rawParams, '&');
   ListWrapper.forEach(params, (param: string) => {
     var split: List<string> = StringWrapper.split(param, '=');
     var key = ListWrapper.get(split, 0);
     var val = ListWrapper.get(split, 1);
-    var list = MapWrapper.get(map, key) || [];
+    var list = map.get(key) || [];
     list.push(val);
-    MapWrapper.set(map, key, list);
+    map.set(key, list);
   });
   return map;
 }
@@ -21,14 +21,14 @@ export class URLSearchParams {
 
   has(param: string): boolean { return MapWrapper.contains(this.paramsMap, param); }
 
-  get(param: string): string { return ListWrapper.first(MapWrapper.get(this.paramsMap, param)); }
+  get(param: string): string { return ListWrapper.first(this.paramsMap.get(param)); }
 
-  getAll(param: string): List<string> { return MapWrapper.get(this.paramsMap, param) || []; }
+  getAll(param: string): List<string> { return this.paramsMap.get(param) || []; }
 
   append(param: string, val: string): void {
-    var list = MapWrapper.get(this.paramsMap, param) || [];
+    var list = this.paramsMap.get(param) || [];
     list.push(val);
-    MapWrapper.set(this.paramsMap, param, list);
+    this.paramsMap.set(param, list);
   }
 
   toString(): string {
diff --git a/modules/angular2/src/mock/template_resolver_mock.ts b/modules/angular2/src/mock/template_resolver_mock.ts
index b332a545ca..02e00b16aa 100644
--- a/modules/angular2/src/mock/template_resolver_mock.ts
+++ b/modules/angular2/src/mock/template_resolver_mock.ts
@@ -13,10 +13,10 @@ export class MockTemplateResolver extends TemplateResolver {
 
   constructor() {
     super();
-    this._views = MapWrapper.create();
-    this._inlineTemplates = MapWrapper.create();
-    this._viewCache = MapWrapper.create();
-    this._directiveOverrides = MapWrapper.create();
+    this._views = new Map();
+    this._inlineTemplates = new Map();
+    this._viewCache = new Map();
+    this._directiveOverrides = new Map();
   }
 
   /**
@@ -27,7 +27,7 @@ export class MockTemplateResolver extends TemplateResolver {
    */
   setView(component: Type, view: View): void {
     this._checkOverrideable(component);
-    MapWrapper.set(this._views, component, view);
+    this._views.set(component, view);
   }
 
   /**
@@ -38,7 +38,7 @@ export class MockTemplateResolver extends TemplateResolver {
    */
   setInlineTemplate(component: Type, template: string): void {
     this._checkOverrideable(component);
-    MapWrapper.set(this._inlineTemplates, component, template);
+    this._inlineTemplates.set(component, template);
   }
 
   /**
@@ -51,14 +51,14 @@ export class MockTemplateResolver extends TemplateResolver {
   overrideViewDirective(component: Type, from: Type, to: Type): void {
     this._checkOverrideable(component);
 
-    var overrides = MapWrapper.get(this._directiveOverrides, component);
+    var overrides = this._directiveOverrides.get(component);
 
     if (isBlank(overrides)) {
-      overrides = MapWrapper.create();
-      MapWrapper.set(this._directiveOverrides, component, overrides);
+      overrides = new Map();
+      this._directiveOverrides.set(component, overrides);
     }
 
-    MapWrapper.set(overrides, from, to);
+    overrides.set(from, to);
   }
 
   /**
@@ -73,16 +73,16 @@ export class MockTemplateResolver extends TemplateResolver {
    * @returns {ViewDefinition}
    */
   resolve(component: Type): View {
-    var view = MapWrapper.get(this._viewCache, component);
+    var view = this._viewCache.get(component);
     if (isPresent(view)) return view;
 
-    view = MapWrapper.get(this._views, component);
+    view = this._views.get(component);
     if (isBlank(view)) {
       view = super.resolve(component);
     }
 
     var directives = view.directives;
-    var overrides = MapWrapper.get(this._directiveOverrides, component);
+    var overrides = this._directiveOverrides.get(component);
 
     if (isPresent(overrides) && isPresent(directives)) {
       directives = ListWrapper.clone(view.directives);
@@ -98,12 +98,12 @@ export class MockTemplateResolver extends TemplateResolver {
           {template: view.template, templateUrl: view.templateUrl, directives: directives});
     }
 
-    var inlineTemplate = MapWrapper.get(this._inlineTemplates, component);
+    var inlineTemplate = this._inlineTemplates.get(component);
     if (isPresent(inlineTemplate)) {
       view = new View({template: inlineTemplate, templateUrl: null, directives: view.directives});
     }
 
-    MapWrapper.set(this._viewCache, component, view);
+    this._viewCache.set(component, view);
     return view;
   }
 
@@ -116,7 +116,7 @@ export class MockTemplateResolver extends TemplateResolver {
    * @param {Type} component
    */
   _checkOverrideable(component: Type): void {
-    var cached = MapWrapper.get(this._viewCache, component);
+    var cached = this._viewCache.get(component);
 
     if (isPresent(cached)) {
       throw new BaseException(
diff --git a/modules/angular2/src/reflection/reflector.ts b/modules/angular2/src/reflection/reflector.ts
index 5582ece148..d27ab4fbf3 100644
--- a/modules/angular2/src/reflection/reflector.ts
+++ b/modules/angular2/src/reflection/reflector.ts
@@ -20,15 +20,15 @@ export class Reflector {
   reflectionCapabilities: PlatformReflectionCapabilities;
 
   constructor(reflectionCapabilities: PlatformReflectionCapabilities) {
-    this._typeInfo = MapWrapper.create();
-    this._getters = MapWrapper.create();
-    this._setters = MapWrapper.create();
-    this._methods = MapWrapper.create();
+    this._typeInfo = new Map();
+    this._getters = new Map();
+    this._setters = new Map();
+    this._methods = new Map();
     this.reflectionCapabilities = reflectionCapabilities;
   }
 
   registerType(type: Type, typeInfo: StringMap<string, any>): void {
-    MapWrapper.set(this._typeInfo, type, typeInfo);
+    this._typeInfo.set(type, typeInfo);
   }
 
   registerGetters(getters: StringMap<string, GetterFn>): void {
@@ -77,7 +77,7 @@ export class Reflector {
 
   getter(name: string): GetterFn {
     if (MapWrapper.contains(this._getters, name)) {
-      return MapWrapper.get(this._getters, name);
+      return this._getters.get(name);
     } else {
       return this.reflectionCapabilities.getter(name);
     }
@@ -85,7 +85,7 @@ export class Reflector {
 
   setter(name: string): SetterFn {
     if (MapWrapper.contains(this._setters, name)) {
-      return MapWrapper.get(this._setters, name);
+      return this._setters.get(name);
     } else {
       return this.reflectionCapabilities.setter(name);
     }
@@ -93,14 +93,14 @@ export class Reflector {
 
   method(name: string): MethodFn {
     if (MapWrapper.contains(this._methods, name)) {
-      return MapWrapper.get(this._methods, name);
+      return this._methods.get(name);
     } else {
       return this.reflectionCapabilities.method(name);
     }
   }
 
   _getTypeInfoField(typeOrFunc, key, defaultValue) {
-    var res = MapWrapper.get(this._typeInfo, typeOrFunc)[key];
+    var res = this._typeInfo.get(typeOrFunc)[key];
     return isPresent(res) ? res : defaultValue;
   }
 
@@ -108,5 +108,5 @@ export class Reflector {
 }
 
 function _mergeMaps(target: Map<any, any>, config: StringMap<string, Function>): void {
-  StringMapWrapper.forEach(config, (v, k) => MapWrapper.set(target, k, v));
+  StringMapWrapper.forEach(config, (v, k) => target.set(k, v));
 }
diff --git a/modules/angular2/src/render/api.ts b/modules/angular2/src/render/api.ts
index dd440ad7a6..3230d5dd8d 100644
--- a/modules/angular2/src/render/api.ts
+++ b/modules/angular2/src/render/api.ts
@@ -205,22 +205,22 @@ export class DirectiveMetadata {
     changeDetection?: string,
     exportAs?: string
   }) {
-    let hostListeners = MapWrapper.create();
-    let hostProperties = MapWrapper.create();
-    let hostAttributes = MapWrapper.create();
-    let hostActions = MapWrapper.create();
+    let hostListeners = new Map();
+    let hostProperties = new Map();
+    let hostAttributes = new Map();
+    let hostActions = new Map();
 
     if (isPresent(host)) {
       MapWrapper.forEach(host, (value: string, key: string) => {
         var matches = RegExpWrapper.firstMatch(hostRegExp, key);
         if (isBlank(matches)) {
-          MapWrapper.set(hostAttributes, key, value);
+          hostAttributes.set(key, value);
         } else if (isPresent(matches[1])) {
-          MapWrapper.set(hostProperties, matches[1], value);
+          hostProperties.set(matches[1], value);
         } else if (isPresent(matches[2])) {
-          MapWrapper.set(hostListeners, matches[2], value);
+          hostListeners.set(matches[2], value);
         } else if (isPresent(matches[3])) {
-          MapWrapper.set(hostActions, matches[3], value);
+          hostActions.set(matches[3], value);
         }
       });
     }
diff --git a/modules/angular2/src/render/dom/compiler/compile_element.ts b/modules/angular2/src/render/dom/compiler/compile_element.ts
index af5e6eee17..1d64db7b16 100644
--- a/modules/angular2/src/render/dom/compiler/compile_element.ts
+++ b/modules/angular2/src/render/dom/compiler/compile_element.ts
@@ -83,8 +83,8 @@ function getElementDescription(domElement): string {
   buf.add(DOM.tagName(domElement).toLowerCase());
 
   // show id and class first to ease element identification
-  addDescriptionAttribute(buf, "id", MapWrapper.get(atts, "id"));
-  addDescriptionAttribute(buf, "class", MapWrapper.get(atts, "class"));
+  addDescriptionAttribute(buf, "id", atts.get("id"));
+  addDescriptionAttribute(buf, "class", atts.get("class"));
   MapWrapper.forEach(atts, (attValue, attName) => {
     if (attName !== "id" && attName !== "class") {
       addDescriptionAttribute(buf, attName, attValue);
diff --git a/modules/angular2/src/render/dom/compiler/directive_parser.ts b/modules/angular2/src/render/dom/compiler/directive_parser.ts
index bb6397d739..628f755309 100644
--- a/modules/angular2/src/render/dom/compiler/directive_parser.ts
+++ b/modules/angular2/src/render/dom/compiler/directive_parser.ts
@@ -135,11 +135,10 @@ export class DirectiveParser implements CompileStep {
       pipes = [];
     }
 
-    var bindingAst =
-        MapWrapper.get(compileElement.bindElement().propertyBindings, dashCaseToCamelCase(elProp));
+    var bindingAst = compileElement.bindElement().propertyBindings.get(dashCaseToCamelCase(elProp));
 
     if (isBlank(bindingAst)) {
-      var attributeValue = MapWrapper.get(compileElement.attrs(), camelCaseToDashCase(elProp));
+      var attributeValue = compileElement.attrs().get(camelCaseToDashCase(elProp));
       if (isPresent(attributeValue)) {
         bindingAst =
             this._parser.wrapLiteralPrimitive(attributeValue, compileElement.elementDescription);
diff --git a/modules/angular2/src/render/dom/compiler/property_binding_parser.ts b/modules/angular2/src/render/dom/compiler/property_binding_parser.ts
index 381a4e6771..1304ce5d0f 100644
--- a/modules/angular2/src/render/dom/compiler/property_binding_parser.ts
+++ b/modules/angular2/src/render/dom/compiler/property_binding_parser.ts
@@ -27,7 +27,7 @@ export class PropertyBindingParser implements CompileStep {
 
   process(parent: CompileElement, current: CompileElement, control: CompileControl) {
     var attrs = current.attrs();
-    var newAttrs = MapWrapper.create();
+    var newAttrs = new Map();
 
     MapWrapper.forEach(attrs, (attrValue, attrName) => {
       var bindParts = RegExpWrapper.firstMatch(BIND_NAME_REGEXP, attrName);
@@ -66,13 +66,12 @@ export class PropertyBindingParser implements CompileStep {
       }
     });
 
-    MapWrapper.forEach(newAttrs,
-                       (attrValue, attrName) => { MapWrapper.set(attrs, attrName, attrValue); });
+    MapWrapper.forEach(newAttrs, (attrValue, attrName) => { attrs.set(attrName, attrValue); });
   }
 
-  _bindVariable(identifier, value, current: CompileElement, newAttrs) {
+  _bindVariable(identifier, value, current: CompileElement, newAttrs: Map<any, any>) {
     current.bindElement().bindVariable(dashCaseToCamelCase(identifier), value);
-    MapWrapper.set(newAttrs, identifier, value);
+    newAttrs.set(identifier, value);
   }
 
   _bindProperty(name, expression, current: CompileElement, newAttrs) {
@@ -80,10 +79,10 @@ export class PropertyBindingParser implements CompileStep {
                           current, newAttrs);
   }
 
-  _bindPropertyAst(name, ast, current: CompileElement, newAttrs) {
+  _bindPropertyAst(name, ast, current: CompileElement, newAttrs: Map<any, any>) {
     var binder = current.bindElement();
     binder.bindProperty(dashCaseToCamelCase(name), ast);
-    MapWrapper.set(newAttrs, name, ast.source);
+    newAttrs.set(name, ast.source);
   }
 
   _bindAssignmentEvent(name, expression, current: CompileElement, newAttrs) {
diff --git a/modules/angular2/src/render/dom/compiler/selector.ts b/modules/angular2/src/render/dom/compiler/selector.ts
index a339488c56..45e261fe19 100644
--- a/modules/angular2/src/render/dom/compiler/selector.ts
+++ b/modules/angular2/src/render/dom/compiler/selector.ts
@@ -141,12 +141,12 @@ export class SelectorMatcher {
     return notMatcher;
   }
 
-  private _elementMap: Map<string, List<SelectorContext>> = MapWrapper.create();
-  private _elementPartialMap: Map<string, SelectorMatcher> = MapWrapper.create();
-  private _classMap: Map<string, List<SelectorContext>> = MapWrapper.create();
-  private _classPartialMap: Map<string, SelectorMatcher> = MapWrapper.create();
-  private _attrValueMap: Map<string, Map<string, List<SelectorContext>>> = MapWrapper.create();
-  private _attrValuePartialMap: Map<string, Map<string, SelectorMatcher>> = MapWrapper.create();
+  private _elementMap: Map<string, List<SelectorContext>> = new Map();
+  private _elementPartialMap: Map<string, SelectorMatcher> = new Map();
+  private _classMap: Map<string, List<SelectorContext>> = new Map();
+  private _classPartialMap: Map<string, SelectorMatcher> = new Map();
+  private _attrValueMap: Map<string, Map<string, List<SelectorContext>>> = new Map();
+  private _attrValuePartialMap: Map<string, Map<string, SelectorMatcher>> = new Map();
   private _listContexts: List<SelectorListContext> = [];
 
   addSelectables(cssSelectors: List<CssSelector>, callbackCtxt?: any) {
@@ -201,18 +201,18 @@ export class SelectorMatcher {
         var attrValue = attrs[index++];
         if (isTerminal) {
           var terminalMap = matcher._attrValueMap;
-          var terminalValuesMap = MapWrapper.get(terminalMap, attrName);
+          var terminalValuesMap = terminalMap.get(attrName);
           if (isBlank(terminalValuesMap)) {
-            terminalValuesMap = MapWrapper.create();
-            MapWrapper.set(terminalMap, attrName, terminalValuesMap);
+            terminalValuesMap = new Map();
+            terminalMap.set(attrName, terminalValuesMap);
           }
           this._addTerminal(terminalValuesMap, attrValue, selectable);
         } else {
           var parttialMap = matcher._attrValuePartialMap;
-          var partialValuesMap = MapWrapper.get(parttialMap, attrName);
+          var partialValuesMap = parttialMap.get(attrName);
           if (isBlank(partialValuesMap)) {
-            partialValuesMap = MapWrapper.create();
-            MapWrapper.set(parttialMap, attrName, partialValuesMap);
+            partialValuesMap = new Map();
+            parttialMap.set(attrName, partialValuesMap);
           }
           matcher = this._addPartial(partialValuesMap, attrValue);
         }
@@ -222,19 +222,19 @@ export class SelectorMatcher {
 
   private _addTerminal(map: Map<string, List<SelectorContext>>, name: string,
                        selectable: SelectorContext) {
-    var terminalList = MapWrapper.get(map, name);
+    var terminalList = map.get(name);
     if (isBlank(terminalList)) {
       terminalList = [];
-      MapWrapper.set(map, name, terminalList);
+      map.set(name, terminalList);
     }
     terminalList.push(selectable);
   }
 
   private _addPartial(map: Map<string, SelectorMatcher>, name: string): SelectorMatcher {
-    var matcher = MapWrapper.get(map, name);
+    var matcher = map.get(name);
     if (isBlank(matcher)) {
       matcher = new SelectorMatcher();
-      MapWrapper.set(map, name, matcher);
+      map.set(name, matcher);
     }
     return matcher;
   }
@@ -276,7 +276,7 @@ export class SelectorMatcher {
         var attrName = attrs[index++];
         var attrValue = attrs[index++];
 
-        var terminalValuesMap = MapWrapper.get(this._attrValueMap, attrName);
+        var terminalValuesMap = this._attrValueMap.get(attrName);
         if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {
           result = this._matchTerminal(terminalValuesMap, _EMPTY_ATTR_VALUE, cssSelector,
                                        matchedCallback) ||
@@ -285,7 +285,7 @@ export class SelectorMatcher {
         result = this._matchTerminal(terminalValuesMap, attrValue, cssSelector, matchedCallback) ||
                  result;
 
-        var partialValuesMap = MapWrapper.get(this._attrValuePartialMap, attrName);
+        var partialValuesMap = this._attrValuePartialMap.get(attrName);
         if (!StringWrapper.equals(attrValue, _EMPTY_ATTR_VALUE)) {
           result = this._matchPartial(partialValuesMap, _EMPTY_ATTR_VALUE, cssSelector,
                                       matchedCallback) ||
@@ -304,8 +304,8 @@ export class SelectorMatcher {
       return false;
     }
 
-    var selectables = MapWrapper.get(map, name);
-    var starSelectables = MapWrapper.get(map, "*");
+    var selectables = map.get(name);
+    var starSelectables = map.get("*");
     if (isPresent(starSelectables)) {
       selectables = ListWrapper.concat(selectables, starSelectables);
     }
@@ -326,7 +326,7 @@ export class SelectorMatcher {
     if (isBlank(map) || isBlank(name)) {
       return false;
     }
-    var nestedSelector = MapWrapper.get(map, name);
+    var nestedSelector = map.get(name);
     if (isBlank(nestedSelector)) {
       return false;
     }
diff --git a/modules/angular2/src/render/dom/compiler/template_loader.ts b/modules/angular2/src/render/dom/compiler/template_loader.ts
index b22506edbe..4d79bb1758 100644
--- a/modules/angular2/src/render/dom/compiler/template_loader.ts
+++ b/modules/angular2/src/render/dom/compiler/template_loader.ts
@@ -15,7 +15,7 @@ import {UrlResolver} from 'angular2/src/services/url_resolver';
  */
 @Injectable()
 export class TemplateLoader {
-  _cache: Map<string, Promise<string>> = MapWrapper.create();
+  _cache: Map<string, Promise<string>> = new Map();
 
   constructor(private _xhr: XHR, urlResolver: UrlResolver) {}
 
@@ -52,7 +52,7 @@ export class TemplateLoader {
   }
 
   private _loadText(url: string): Promise<string> {
-    var response = MapWrapper.get(this._cache, url);
+    var response = this._cache.get(url);
 
     if (isBlank(response)) {
       // TODO(vicb): change error when TS gets fixed
@@ -62,7 +62,7 @@ export class TemplateLoader {
           this._xhr.get(url),
           _ => PromiseWrapper.reject(new BaseException(`Failed to fetch url "${url}"`), null));
 
-      MapWrapper.set(this._cache, url, response);
+      this._cache.set(url, response);
     }
 
     return response;
diff --git a/modules/angular2/src/render/dom/compiler/view_splitter.ts b/modules/angular2/src/render/dom/compiler/view_splitter.ts
index acdf3daf72..9329b9bfd0 100644
--- a/modules/angular2/src/render/dom/compiler/view_splitter.ts
+++ b/modules/angular2/src/render/dom/compiler/view_splitter.ts
@@ -30,7 +30,7 @@ export class ViewSplitter implements CompileStep {
 
   process(parent: CompileElement, current: CompileElement, control: CompileControl) {
     var attrs = current.attrs();
-    var templateBindings = MapWrapper.get(attrs, 'template');
+    var templateBindings = attrs.get('template');
     var hasTemplateBinding = isPresent(templateBindings);
 
     // look for template shortcuts such as *ng-if="condition" and treat them as template="if
@@ -106,11 +106,11 @@ export class ViewSplitter implements CompileStep {
       var binding = bindings[i];
       if (binding.keyIsVar) {
         compileElement.bindElement().bindVariable(dashCaseToCamelCase(binding.key), binding.name);
-        MapWrapper.set(compileElement.attrs(), binding.key, binding.name);
+        compileElement.attrs().set(binding.key, binding.name);
       } else if (isPresent(binding.expression)) {
         compileElement.bindElement().bindProperty(dashCaseToCamelCase(binding.key),
                                                   binding.expression);
-        MapWrapper.set(compileElement.attrs(), binding.key, binding.expression.source);
+        compileElement.attrs().set(binding.key, binding.expression.source);
       } else {
         DOM.setAttribute(compileElement.element, binding.key, '');
       }
diff --git a/modules/angular2/src/render/dom/convert.ts b/modules/angular2/src/render/dom/convert.ts
index b73b4f3d86..7259b9fdff 100644
--- a/modules/angular2/src/render/dom/convert.ts
+++ b/modules/angular2/src/render/dom/convert.ts
@@ -37,24 +37,24 @@ export function directiveMetadataToMap(meta: DirectiveMetadata): Map<string, any
  */
 export function directiveMetadataFromMap(map: Map<string, any>): DirectiveMetadata {
   return new DirectiveMetadata({
-    id:<string>MapWrapper.get(map, 'id'),
-    selector:<string>MapWrapper.get(map, 'selector'),
-    compileChildren:<boolean>MapWrapper.get(map, 'compileChildren'),
-    hostProperties:<Map<string, string>>_cloneIfPresent(MapWrapper.get(map, 'hostProperties')),
-    hostListeners:<Map<string, string>>_cloneIfPresent(MapWrapper.get(map, 'hostListeners')),
-    hostActions:<Map<string, string>>_cloneIfPresent(MapWrapper.get(map, 'hostActions')),
-    hostAttributes:<Map<string, string>>_cloneIfPresent(MapWrapper.get(map, 'hostAttributes')),
-    properties:<List<string>>_cloneIfPresent(MapWrapper.get(map, 'properties')),
-    readAttributes:<List<string>>_cloneIfPresent(MapWrapper.get(map, 'readAttributes')),
-    type:<number>MapWrapper.get(map, 'type'),
-    exportAs:<string>MapWrapper.get(map, 'exportAs'),
-    callOnDestroy:<boolean>MapWrapper.get(map, 'callOnDestroy'),
-    callOnCheck:<boolean>MapWrapper.get(map, 'callOnCheck'),
-    callOnChange:<boolean>MapWrapper.get(map, 'callOnChange'),
-    callOnInit:<boolean>MapWrapper.get(map, 'callOnInit'),
-    callOnAllChangesDone:<boolean>MapWrapper.get(map, 'callOnAllChangesDone'),
-    events:<List<string>>_cloneIfPresent(MapWrapper.get(map, 'events')),
-    changeDetection:<string>MapWrapper.get(map, 'changeDetection'),
+    id:<string>map.get('id'),
+    selector:<string>map.get('selector'),
+    compileChildren:<boolean>map.get('compileChildren'),
+    hostProperties:<Map<string, string>>_cloneIfPresent(map.get('hostProperties')),
+    hostListeners:<Map<string, string>>_cloneIfPresent(map.get('hostListeners')),
+    hostActions:<Map<string, string>>_cloneIfPresent(map.get('hostActions')),
+    hostAttributes:<Map<string, string>>_cloneIfPresent(map.get('hostAttributes')),
+    properties:<List<string>>_cloneIfPresent(map.get('properties')),
+    readAttributes:<List<string>>_cloneIfPresent(map.get('readAttributes')),
+    type:<number>map.get('type'),
+    exportAs:<string>map.get('exportAs'),
+    callOnDestroy:<boolean>map.get('callOnDestroy'),
+    callOnCheck:<boolean>map.get('callOnCheck'),
+    callOnChange:<boolean>map.get('callOnChange'),
+    callOnInit:<boolean>map.get('callOnInit'),
+    callOnAllChangesDone:<boolean>map.get('callOnAllChangesDone'),
+    events:<List<string>>_cloneIfPresent(map.get('events')),
+    changeDetection:<string>map.get('changeDetection'),
   });
 }
 
diff --git a/modules/angular2/src/render/dom/shadow_dom/shadow_dom_compile_step.ts b/modules/angular2/src/render/dom/shadow_dom/shadow_dom_compile_step.ts
index 4b4df8b154..0670befa2e 100644
--- a/modules/angular2/src/render/dom/shadow_dom/shadow_dom_compile_step.ts
+++ b/modules/angular2/src/render/dom/shadow_dom/shadow_dom_compile_step.ts
@@ -44,7 +44,7 @@ export class ShadowDomCompileStep implements CompileStep {
       return;
     }
     var attrs = current.attrs();
-    var selector = MapWrapper.get(attrs, 'select');
+    var selector = attrs.get('select');
     selector = isPresent(selector) ? selector : '';
 
     // The content tag should be replaced by a pair of marker tags (start & end).
diff --git a/modules/angular2/src/render/dom/shadow_dom/util.ts b/modules/angular2/src/render/dom/shadow_dom/util.ts
index 1e3bb20dd6..bbb1e86250 100644
--- a/modules/angular2/src/render/dom/shadow_dom/util.ts
+++ b/modules/angular2/src/render/dom/shadow_dom/util.ts
@@ -5,16 +5,16 @@ import {DOM} from 'angular2/src/dom/dom_adapter';
 
 import {ShadowCss} from './shadow_css';
 
-var _componentUIDs: Map<string, int> = MapWrapper.create();
+var _componentUIDs: Map<string, int> = new Map();
 var _nextComponentUID: int = 0;
-var _sharedStyleTexts: Map<string, boolean> = MapWrapper.create();
+var _sharedStyleTexts: Map<string, boolean> = new Map();
 var _lastInsertedStyleEl;
 
 export function getComponentId(componentStringId: string) {
-  var id = MapWrapper.get(_componentUIDs, componentStringId);
+  var id = _componentUIDs.get(componentStringId);
   if (isBlank(id)) {
     id = _nextComponentUID++;
-    MapWrapper.set(_componentUIDs, componentStringId, id);
+    _componentUIDs.set(componentStringId, id);
   }
   return id;
 }
@@ -23,7 +23,7 @@ export function insertSharedStyleText(cssText, styleHost, styleEl) {
   if (!MapWrapper.contains(_sharedStyleTexts, cssText)) {
     // Styles are unscoped and shared across components, only append them to the head
     // when there are not present yet
-    MapWrapper.set(_sharedStyleTexts, cssText, true);
+    _sharedStyleTexts.set(cssText, true);
     insertStyleElement(styleHost, styleEl);
   }
 }
diff --git a/modules/angular2/src/render/dom/view/proto_view_builder.ts b/modules/angular2/src/render/dom/view/proto_view_builder.ts
index fb1a95055e..716720b3a3 100644
--- a/modules/angular2/src/render/dom/view/proto_view_builder.ts
+++ b/modules/angular2/src/render/dom/view/proto_view_builder.ts
@@ -20,7 +20,7 @@ import * as api from '../../api';
 import {NG_BINDING_CLASS, EVENT_TARGET_SEPARATOR} from '../util';
 
 export class ProtoViewBuilder {
-  variableBindings: Map<string, string> = MapWrapper.create();
+  variableBindings: Map<string, string> = new Map();
   elements: List<ElementBinderBuilder> = [];
 
   constructor(public rootElement, public type: api.ViewType) {}
@@ -40,7 +40,7 @@ export class ProtoViewBuilder {
     // by the "value", or exported identifier. For example, ng-for sets a view local of "index".
     // When this occurs, a lookup keyed by "index" must occur to find if there is a var referencing
     // it.
-    MapWrapper.set(this.variableBindings, value, name);
+    this.variableBindings.set(value, name);
   }
 
   build(setterFactory: PropertySetterFactory): api.ProtoViewDto {
@@ -49,20 +49,20 @@ export class ProtoViewBuilder {
     var apiElementBinders = [];
     var transitiveContentTagCount = 0;
     ListWrapper.forEach(this.elements, (ebb: ElementBinderBuilder) => {
-      var propertySetters = MapWrapper.create();
-      var hostActions = MapWrapper.create();
+      var propertySetters = new Map();
+      var hostActions = new Map();
 
       var apiDirectiveBinders = ListWrapper.map(ebb.directives, (dbb: DirectiveBuilder) => {
         ebb.eventBuilder.merge(dbb.eventBuilder);
 
         MapWrapper.forEach(dbb.hostPropertyBindings, (_, hostPropertyName) => {
-          MapWrapper.set(propertySetters, hostPropertyName,
-                         setterFactory.createSetter(ebb.element, isPresent(ebb.componentId),
-                                                    hostPropertyName));
+          propertySetters.set(hostPropertyName,
+                              setterFactory.createSetter(ebb.element, isPresent(ebb.componentId),
+                                                         hostPropertyName));
         });
 
         ListWrapper.forEach(dbb.hostActions, (hostAction) => {
-          MapWrapper.set(hostActions, hostAction.actionExpression, hostAction.expression);
+          hostActions.set(hostAction.actionExpression, hostAction.expression);
         });
 
         return new api.DirectiveBinder({
@@ -74,8 +74,9 @@ export class ProtoViewBuilder {
       });
 
       MapWrapper.forEach(ebb.propertyBindings, (_, propertyName) => {
-        MapWrapper.set(
-            propertySetters, propertyName,
+
+        propertySetters.set(
+            propertyName,
             setterFactory.createSetter(ebb.element, isPresent(ebb.componentId), propertyName));
       });
 
@@ -149,14 +150,14 @@ export class ElementBinderBuilder {
   distanceToParent: number = 0;
   directives: List<DirectiveBuilder> = [];
   nestedProtoView: ProtoViewBuilder = null;
-  propertyBindings: Map<string, ASTWithSource> = MapWrapper.create();
-  variableBindings: Map<string, string> = MapWrapper.create();
+  propertyBindings: Map<string, ASTWithSource> = new Map();
+  variableBindings: Map<string, string> = new Map();
   eventBindings: List<api.EventBinding> = [];
   eventBuilder: EventBuilder = new EventBuilder();
   textBindingIndices: List<number> = [];
   textBindings: List<ASTWithSource> = [];
   contentTagSelector: string = null;
-  readAttributes: Map<string, string> = MapWrapper.create();
+  readAttributes: Map<string, string> = new Map();
   componentId: string = null;
 
   constructor(public index: number, public element, description: string) {}
@@ -170,8 +171,8 @@ export class ElementBinderBuilder {
   }
 
   readAttribute(attrName: string) {
-    if (isBlank(MapWrapper.get(this.readAttributes, attrName))) {
-      MapWrapper.set(this.readAttributes, attrName, DOM.getAttribute(this.element, attrName));
+    if (isBlank(this.readAttributes.get(attrName))) {
+      this.readAttributes.set(attrName, DOM.getAttribute(this.element, attrName));
     }
   }
 
@@ -189,7 +190,7 @@ export class ElementBinderBuilder {
     return this.nestedProtoView;
   }
 
-  bindProperty(name, expression) { MapWrapper.set(this.propertyBindings, name, expression); }
+  bindProperty(name, expression) { this.propertyBindings.set(name, expression); }
 
   bindVariable(name, value) {
     // When current is a view root, the variable bindings are set to the *nested* proto view.
@@ -205,7 +206,7 @@ export class ElementBinderBuilder {
       // When this occurs, a lookup keyed by "index" must occur to find if there is a var
       // referencing
       // it.
-      MapWrapper.set(this.variableBindings, value, name);
+      this.variableBindings.set(value, name);
     }
   }
 
@@ -224,19 +225,17 @@ export class ElementBinderBuilder {
 }
 
 export class DirectiveBuilder {
-  propertyBindings: Map<string, ASTWithSource> = MapWrapper.create();
-  hostPropertyBindings: Map<string, ASTWithSource> = MapWrapper.create();
+  propertyBindings: Map<string, ASTWithSource> = new Map();
+  hostPropertyBindings: Map<string, ASTWithSource> = new Map();
   hostActions: List<HostAction> = [];
   eventBindings: List<api.EventBinding> = [];
   eventBuilder: EventBuilder = new EventBuilder();
 
   constructor(public directiveIndex: number) {}
 
-  bindProperty(name, expression) { MapWrapper.set(this.propertyBindings, name, expression); }
+  bindProperty(name, expression) { this.propertyBindings.set(name, expression); }
 
-  bindHostProperty(name, expression) {
-    MapWrapper.set(this.hostPropertyBindings, name, expression);
-  }
+  bindHostProperty(name, expression) { this.hostPropertyBindings.set(name, expression); }
 
   bindHostAction(actionName: string, actionExpression: string, expression: ASTWithSource) {
     this.hostActions.push(new HostAction(actionName, actionExpression, expression));
diff --git a/modules/angular2/src/render/dom/view/view.ts b/modules/angular2/src/render/dom/view/view.ts
index 41ca42764c..e4b804351d 100644
--- a/modules/angular2/src/render/dom/view/view.ts
+++ b/modules/angular2/src/render/dom/view/view.ts
@@ -40,20 +40,19 @@ export class DomView {
   }
 
   setElementProperty(elementIndex: number, propertyName: string, value: any) {
-    var setter =
-        MapWrapper.get(this.proto.elementBinders[elementIndex].propertySetters, propertyName);
+    var setter = this.proto.elementBinders[elementIndex].propertySetters.get(propertyName);
     setter(this.boundElements[elementIndex].element, value);
   }
 
   callAction(elementIndex: number, actionExpression: string, actionArgs: any) {
     var binder = this.proto.elementBinders[elementIndex];
-    var hostAction = MapWrapper.get(binder.hostActions, actionExpression);
+    var hostAction = binder.hostActions.get(actionExpression);
     hostAction.eval(this.boundElements[elementIndex].element, this._localsWithAction(actionArgs));
   }
 
   _localsWithAction(action: Object): Locals {
-    var map = MapWrapper.create();
-    MapWrapper.set(map, '$action', action);
+    var map = new Map();
+    map.set('$action', action);
     return new Locals(null, map);
   }
 
@@ -62,8 +61,8 @@ export class DomView {
   dispatchEvent(elementIndex, eventName, event): boolean {
     var allowDefaultBehavior = true;
     if (isPresent(this.eventDispatcher)) {
-      var evalLocals = MapWrapper.create();
-      MapWrapper.set(evalLocals, '$event', event);
+      var evalLocals = new Map();
+      evalLocals.set('$event', event);
       // TODO(tbosch): reenable this when we are parsing element properties
       // out of action expressions
       // var localValues = this.proto.elementBinders[elementIndex].eventLocals.eval(null, new
diff --git a/modules/angular2/src/render/xhr_mock.ts b/modules/angular2/src/render/xhr_mock.ts
index b74e1920ac..606f63acb8 100644
--- a/modules/angular2/src/render/xhr_mock.ts
+++ b/modules/angular2/src/render/xhr_mock.ts
@@ -11,7 +11,7 @@ export class MockXHR extends XHR {
   constructor() {
     super();
     this._expectations = [];
-    this._definitions = MapWrapper.create();
+    this._definitions = new Map();
     this._requests = [];
   }
 
@@ -26,7 +26,7 @@ export class MockXHR extends XHR {
     this._expectations.push(expectation);
   }
 
-  when(url: string, response: string) { MapWrapper.set(this._definitions, url, response); }
+  when(url: string, response: string) { this._definitions.set(url, response); }
 
   flush() {
     if (this._requests.length === 0) {
@@ -66,7 +66,7 @@ export class MockXHR extends XHR {
     }
 
     if (MapWrapper.contains(this._definitions, url)) {
-      var response = MapWrapper.get(this._definitions, url);
+      var response = this._definitions.get(url);
       request.complete(normalizeBlank(response));
       return;
     }
diff --git a/modules/angular2/src/router/route_recognizer.ts b/modules/angular2/src/router/route_recognizer.ts
index 8e2efac859..440d54f598 100644
--- a/modules/angular2/src/router/route_recognizer.ts
+++ b/modules/angular2/src/router/route_recognizer.ts
@@ -27,12 +27,12 @@ export class RouteRecognizer {
   matchers: Map<RegExp, PathRecognizer>;
 
   constructor() {
-    this.names = MapWrapper.create();
-    this.matchers = MapWrapper.create();
-    this.redirects = MapWrapper.create();
+    this.names = new Map();
+    this.matchers = new Map();
+    this.redirects = new Map();
   }
 
-  addRedirect(path: string, target: string): void { MapWrapper.set(this.redirects, path, target); }
+  addRedirect(path: string, target: string): void { this.redirects.set(path, target); }
 
   addConfig(path: string, handler: any, alias: string = null): void {
     var recognizer = new PathRecognizer(path, handler);
@@ -42,9 +42,9 @@ export class RouteRecognizer {
             `Configuration '${path}' conflicts with existing route '${matcher.path}'`);
       }
     });
-    MapWrapper.set(this.matchers, recognizer.regex, recognizer);
+    this.matchers.set(recognizer.regex, recognizer);
     if (isPresent(alias)) {
-      MapWrapper.set(this.names, alias, recognizer);
+      this.names.set(alias, recognizer);
     }
   }
 
@@ -93,7 +93,7 @@ export class RouteRecognizer {
   hasRoute(name: string): boolean { return MapWrapper.contains(this.names, name); }
 
   generate(name: string, params: any): string {
-    var pathRecognizer = MapWrapper.get(this.names, name);
+    var pathRecognizer = this.names.get(name);
     return isPresent(pathRecognizer) ? pathRecognizer.generate(params) : null;
   }
 }
diff --git a/modules/angular2/src/router/route_registry.ts b/modules/angular2/src/router/route_registry.ts
index 6a09ac82b1..92a2de95e3 100644
--- a/modules/angular2/src/router/route_registry.ts
+++ b/modules/angular2/src/router/route_registry.ts
@@ -29,7 +29,7 @@ import {reflector} from 'angular2/src/reflection/reflection';
 export class RouteRegistry {
   _rules: Map<any, RouteRecognizer>;
 
-  constructor() { this._rules = MapWrapper.create(); }
+  constructor() { this._rules = new Map(); }
 
   /**
    * Given a component and a configuration object, add the route to this registry
@@ -37,11 +37,11 @@ export class RouteRegistry {
   config(parentComponent, config: StringMap<string, any>): void {
     assertValidConfig(config);
 
-    var recognizer: RouteRecognizer = MapWrapper.get(this._rules, parentComponent);
+    var recognizer: RouteRecognizer = this._rules.get(parentComponent);
 
     if (isBlank(recognizer)) {
       recognizer = new RouteRecognizer();
-      MapWrapper.set(this._rules, parentComponent, recognizer);
+      this._rules.set(parentComponent, recognizer);
     }
 
     if (StringMapWrapper.contains(config, 'redirectTo')) {
@@ -90,7 +90,7 @@ export class RouteRegistry {
    * the application into the state specified by the
    */
   recognize(url: string, parentComponent): Promise<Instruction> {
-    var componentRecognizer = MapWrapper.get(this._rules, parentComponent);
+    var componentRecognizer = this._rules.get(parentComponent);
     if (isBlank(componentRecognizer)) {
       return PromiseWrapper.resolve(null);
     }
@@ -145,7 +145,7 @@ export class RouteRegistry {
 
   generate(name: string, params: StringMap<string, string>, hostComponent): string {
     // TODO: implement for hierarchical routes
-    var componentRecognizer = MapWrapper.get(this._rules, hostComponent);
+    var componentRecognizer = this._rules.get(hostComponent);
     return isPresent(componentRecognizer) ? componentRecognizer.generate(name, params) : null;
   }
 }
diff --git a/modules/angular2/src/test_lib/test_component_builder.ts b/modules/angular2/src/test_lib/test_component_builder.ts
index c6a2dc45f4..c8a44b88ad 100644
--- a/modules/angular2/src/test_lib/test_component_builder.ts
+++ b/modules/angular2/src/test_lib/test_component_builder.ts
@@ -59,9 +59,9 @@ export class TestComponentBuilder {
 
   constructor(injector: Injector) {
     this._injector = injector;
-    this._viewOverrides = MapWrapper.create();
-    this._directiveOverrides = MapWrapper.create();
-    this._templateOverrides = MapWrapper.create();
+    this._viewOverrides = new Map();
+    this._directiveOverrides = new Map();
+    this._templateOverrides = new Map();
   }
 
   _clone(): TestComponentBuilder {
@@ -83,7 +83,7 @@ export class TestComponentBuilder {
    */
   overrideTemplate(componentType: Type, template: string): TestComponentBuilder {
     var clone = this._clone();
-    MapWrapper.set(clone._templateOverrides, componentType, template);
+    clone._templateOverrides.set(componentType, template);
     return clone;
   }
 
@@ -97,7 +97,7 @@ export class TestComponentBuilder {
    */
   overrideView(componentType: Type, view: View): TestComponentBuilder {
     var clone = this._clone();
-    MapWrapper.set(clone._viewOverrides, componentType, view);
+    clone._viewOverrides.set(componentType, view);
     return clone;
   }
 
@@ -112,12 +112,12 @@ export class TestComponentBuilder {
    */
   overrideDirective(componentType: Type, from: Type, to: Type): TestComponentBuilder {
     var clone = this._clone();
-    var overridesForComponent = MapWrapper.get(clone._directiveOverrides, componentType);
+    var overridesForComponent = clone._directiveOverrides.get(componentType);
     if (!isPresent(overridesForComponent)) {
-      MapWrapper.set(clone._directiveOverrides, componentType, MapWrapper.create());
-      overridesForComponent = MapWrapper.get(clone._directiveOverrides, componentType);
+      clone._directiveOverrides.set(componentType, new Map());
+      overridesForComponent = clone._directiveOverrides.get(componentType);
     }
-    MapWrapper.set(overridesForComponent, from, to);
+    overridesForComponent.set(from, to);
     return clone;
   }
 
diff --git a/modules/angular2/src/test_lib/utils.ts b/modules/angular2/src/test_lib/utils.ts
index bc45a0614c..371920ee9b 100644
--- a/modules/angular2/src/test_lib/utils.ts
+++ b/modules/angular2/src/test_lib/utils.ts
@@ -75,7 +75,7 @@ export function stringifyElement(el): string {
     ListWrapper.sort(keys);
     for (let i = 0; i < keys.length; i++) {
       var key = keys[i];
-      var attValue = MapWrapper.get(attributeMap, key);
+      var attValue = attributeMap.get(key);
       if (!isString(attValue)) {
         result += ` ${key}`;
       } else {
diff --git a/modules/angular2/test/change_detection/change_detector_config.ts b/modules/angular2/test/change_detection/change_detector_config.ts
index 213565b833..c813fc203d 100644
--- a/modules/angular2/test/change_detection/change_detector_config.ts
+++ b/modules/angular2/test/change_detection/change_detector_config.ts
@@ -120,8 +120,8 @@ class _ExpressionWithLocals {
     'functionFromLocals': new _ExpressionWithLocals(
         'key()', new Locals(null, MapWrapper.createFromPairs([['key', () => 'value']]))),
     'nestedLocals': new _ExpressionWithLocals(
-        'key', new Locals(new Locals(null, MapWrapper.createFromPairs([['key', 'value']])),
-                          MapWrapper.create())),
+        'key',
+        new Locals(new Locals(null, MapWrapper.createFromPairs([['key', 'value']])), new Map())),
     'fallbackLocals': new _ExpressionWithLocals(
         'name', new Locals(null, MapWrapper.createFromPairs([['key', 'value']]))),
     'contextNestedPropertyWithLocals': new _ExpressionWithLocals(
diff --git a/modules/angular2/test/change_detection/parser/parser_spec.ts b/modules/angular2/test/change_detection/parser/parser_spec.ts
index 68a7e48321..fac5bdfbfb 100644
--- a/modules/angular2/test/change_detection/parser/parser_spec.ts
+++ b/modules/angular2/test/change_detection/parser/parser_spec.ts
@@ -41,7 +41,7 @@ export function main() {
 
   function addPipes(ast, pipes): any { return createParser().addPipes(ast, pipes); }
 
-  function emptyLocals() { return new Locals(null, MapWrapper.create()); }
+  function emptyLocals() { return new Locals(null, new Map()); }
 
   function evalAction(text, passedInContext = null, passedInLocals = null) {
     var c = isBlank(passedInContext) ? td() : passedInContext;
@@ -195,14 +195,14 @@ export function main() {
 
         it("should handle nested Locals", () => {
           var nested = new Locals(null, MapWrapper.createFromPairs([["key", "value"]]));
-          var locals = new Locals(nested, MapWrapper.create());
+          var locals = new Locals(nested, new Map());
           expectEval("key", null, locals).toEqual("value");
         });
 
         it("should fall back to a regular field read when Locals " +
                "does not have the requested field",
            () => {
-             var locals = new Locals(null, MapWrapper.create());
+             var locals = new Locals(null, new Map());
              expectEval("a", td(999), locals).toEqual(999);
            });
       });
@@ -256,7 +256,7 @@ export function main() {
         it('should fall back to the parent context when Locals does not ' +
                'have the requested method',
            () => {
-             var locals = new Locals(null, MapWrapper.create());
+             var locals = new Locals(null, new Map());
              expectEval("fn()", td(0, 0, 'parent'), locals).toEqual('parent');
            });
       });
@@ -356,7 +356,7 @@ export function main() {
 
         it('should reassign when no variable binding with the given name', () => {
           var context = td();
-          var locals = new Locals(null, MapWrapper.create());
+          var locals = new Locals(null, new Map());
           expectEval('a = 200', context, locals).toEqual(200);
           expect(context.a).toEqual(200);
         });
diff --git a/modules/angular2/test/change_detection/pipes/iterable_changes_spec.ts b/modules/angular2/test/change_detection/pipes/iterable_changes_spec.ts
index 76d2915ffd..2691b36796 100644
--- a/modules/angular2/test/change_detection/pipes/iterable_changes_spec.ts
+++ b/modules/angular2/test/change_detection/pipes/iterable_changes_spec.ts
@@ -20,7 +20,7 @@ export function main() {
       it('should support list and iterables', () => {
         expect(IterableChanges.supportsObj([])).toBeTruthy();
         expect(IterableChanges.supportsObj(new TestIterable())).toBeTruthy();
-        expect(IterableChanges.supportsObj(MapWrapper.create())).toBeFalsy();
+        expect(IterableChanges.supportsObj(new Map())).toBeFalsy();
         expect(IterableChanges.supportsObj(null)).toBeFalsy();
       });
 
diff --git a/modules/angular2/test/change_detection/pipes/keyvalue_changes_spec.ts b/modules/angular2/test/change_detection/pipes/keyvalue_changes_spec.ts
index 967fef6a2b..ac4b7ac3a3 100644
--- a/modules/angular2/test/change_detection/pipes/keyvalue_changes_spec.ts
+++ b/modules/angular2/test/change_detection/pipes/keyvalue_changes_spec.ts
@@ -9,11 +9,11 @@ export function main() {
   describe('keyvalue_changes', function() {
     describe('KeyValueChanges', function() {
       var changes;
-      var m;
+      var m: Map<any, any>;
 
       beforeEach(() => {
         changes = new KeyValueChanges();
-        m = MapWrapper.create();
+        m = new Map();
       });
 
       afterEach(() => { changes = null; });
@@ -21,12 +21,12 @@ export function main() {
       it('should detect additions', () => {
         changes.check(m);
 
-        MapWrapper.set(m, 'a', 1);
+        m.set('a', 1);
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString({map: ['a[null->1]'], additions: ['a[null->1]']}));
 
-        MapWrapper.set(m, 'b', 2);
+        m.set('b', 2);
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString(
@@ -34,12 +34,12 @@ export function main() {
       });
 
       it('should handle changing key/values correctly', () => {
-        MapWrapper.set(m, 1, 10);
-        MapWrapper.set(m, 2, 20);
+        m.set(1, 10);
+        m.set(2, 20);
         changes.check(m);
 
-        MapWrapper.set(m, 2, 10);
-        MapWrapper.set(m, 1, 20);
+        m.set(2, 10);
+        m.set(1, 20);
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString({
@@ -52,10 +52,10 @@ export function main() {
       it('should expose previous and current value', () => {
         var previous, current;
 
-        MapWrapper.set(m, 1, 10);
+        m.set(1, 10);
         changes.check(m);
 
-        MapWrapper.set(m, 1, 20);
+        m.set(1, 20);
         changes.check(m);
 
         changes.forEachChangedItem((record) => {
@@ -70,19 +70,19 @@ export function main() {
       it('should do basic map watching', () => {
         changes.check(m);
 
-        MapWrapper.set(m, 'a', 'A');
+        m.set('a', 'A');
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString({map: ['a[null->A]'], additions: ['a[null->A]']}));
 
-        MapWrapper.set(m, 'b', 'B');
+        m.set('b', 'B');
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString(
                 {map: ['a', 'b[null->B]'], previous: ['a'], additions: ['b[null->B]']}));
 
-        MapWrapper.set(m, 'b', 'BB');
-        MapWrapper.set(m, 'd', 'D');
+        m.set('b', 'BB');
+        m.set('d', 'D');
         changes.check(m);
         expect(changes.toString())
             .toEqual(kvChangesAsString({
@@ -106,7 +106,7 @@ export function main() {
       });
 
       it('should test string by value rather than by reference (DART)', () => {
-        MapWrapper.set(m, 'foo', 'bar');
+        m.set('foo', 'bar');
         changes.check(m);
 
         var f = 'f';
@@ -114,14 +114,14 @@ export function main() {
         var b = 'b';
         var ar = 'ar';
 
-        MapWrapper.set(m, f + oo, b + ar);
+        m.set(f + oo, b + ar);
         changes.check(m);
 
         expect(changes.toString()).toEqual(kvChangesAsString({map: ['foo'], previous: ['foo']}));
       });
 
       it('should not see a NaN value as a change (JS)', () => {
-        MapWrapper.set(m, 'foo', NumberWrapper.NaN);
+        m.set('foo', NumberWrapper.NaN);
         changes.check(m);
 
         changes.check(m);
@@ -139,7 +139,7 @@ export function main() {
           });
 
           it('should do basic object watching', () => {
-            m = {};
+            let m = {};
             changes.check(m);
 
             m['a'] = 'A';
diff --git a/modules/angular2/test/core/compiler/compiler_spec.ts b/modules/angular2/test/core/compiler/compiler_spec.ts
index 52d4a05273..467bcd9223 100644
--- a/modules/angular2/test/core/compiler/compiler_spec.ts
+++ b/modules/angular2/test/core/compiler/compiler_spec.ts
@@ -471,7 +471,7 @@ function createDirectiveBinding(directiveResolver, type) {
 }
 
 function createProtoView(elementBinders = null) {
-  var pv = new AppProtoView(null, null, MapWrapper.create(), null);
+  var pv = new AppProtoView(null, null, new Map(), null);
   if (isBlank(elementBinders)) {
     elementBinders = [];
   }
@@ -581,11 +581,11 @@ class FakeTemplateResolver extends TemplateResolver {
 
   constructor() {
     super();
-    this._cmpTemplates = MapWrapper.create();
+    this._cmpTemplates = new Map();
   }
 
   resolve(component: Type): viewAnn.View {
-    var template = MapWrapper.get(this._cmpTemplates, component);
+    var template = this._cmpTemplates.get(component);
     if (isBlank(template)) {
       // dynamic component
       return null;
@@ -593,9 +593,7 @@ class FakeTemplateResolver extends TemplateResolver {
     return template;
   }
 
-  setView(component: Type, template: viewAnn.View) {
-    MapWrapper.set(this._cmpTemplates, component, template);
-  }
+  setView(component: Type, template: viewAnn.View) { this._cmpTemplates.set(component, template); }
 }
 
 class FakeProtoViewFactory extends ProtoViewFactory {
diff --git a/modules/angular2/test/core/compiler/element_injector_spec.ts b/modules/angular2/test/core/compiler/element_injector_spec.ts
index 7505c582f2..2871ec2c46 100644
--- a/modules/angular2/test/core/compiler/element_injector_spec.ts
+++ b/modules/angular2/test/core/compiler/element_injector_spec.ts
@@ -879,9 +879,9 @@ export function main() {
 
         describe('static attributes', () => {
           it('should be injectable', () => {
-            var attributes = MapWrapper.create();
-            MapWrapper.set(attributes, 'type', 'text');
-            MapWrapper.set(attributes, 'title', '');
+            var attributes = new Map();
+            attributes.set( 'type', 'text');
+            attributes.set( 'title', '');
 
             var inj = injector(ListWrapper.concat([NeedsAttribute], extraBindings), null, false, null,
                                attributes);
@@ -893,8 +893,8 @@ export function main() {
           });
 
           it('should be injectable without type annotation', () => {
-            var attributes = MapWrapper.create();
-            MapWrapper.set(attributes, 'foo', 'bar');
+            var attributes = new Map();
+            attributes.set( 'foo', 'bar');
 
             var inj = injector(ListWrapper.concat([NeedsAttributeNoType], extraBindings), null, false,
                                null, attributes);
diff --git a/modules/angular2/test/core/compiler/proto_view_factory_spec.ts b/modules/angular2/test/core/compiler/proto_view_factory_spec.ts
index aec9d94b6c..6f9c823493 100644
--- a/modules/angular2/test/core/compiler/proto_view_factory_spec.ts
+++ b/modules/angular2/test/core/compiler/proto_view_factory_spec.ts
@@ -131,7 +131,7 @@ export function main() {
       it("should not throw when not binding to a name exported by two directives", () => {
         expect(() => {
           createDirectiveVariableBindings(
-              new renderApi.ElementBinder({variableBindings: MapWrapper.create()}), [
+              new renderApi.ElementBinder({variableBindings: new Map()}), [
                 directiveBinding(
                     {metadata: renderApi.DirectiveMetadata.create({exportAs: 'exportName'})}),
                 directiveBinding(
@@ -167,7 +167,7 @@ function createRenderProtoView(elementBinders = null, type: renderApi.ViewType =
     elementBinders = [];
   }
   return new renderApi.ProtoViewDto(
-      {elementBinders: elementBinders, type: type, variableBindings: MapWrapper.create()});
+      {elementBinders: elementBinders, type: type, variableBindings: new Map()});
 }
 
 function createRenderComponentElementBinder(directiveIndex) {
diff --git a/modules/angular2/test/core/compiler/view_container_ref_spec.ts b/modules/angular2/test/core/compiler/view_container_ref_spec.ts
index b1d7c88687..c228a349b9 100644
--- a/modules/angular2/test/core/compiler/view_container_ref_spec.ts
+++ b/modules/angular2/test/core/compiler/view_container_ref_spec.ts
@@ -37,7 +37,7 @@ export function main() {
 
     function createProtoView() { return new AppProtoView(null, null, null, null); }
 
-    function createView() { return new AppView(null, createProtoView(), MapWrapper.create()); }
+    function createView() { return new AppView(null, createProtoView(), new Map()); }
 
     function createViewContainer() { return new ViewContainerRef(viewManager, location); }
 
diff --git a/modules/angular2/test/core/compiler/view_manager_spec.ts b/modules/angular2/test/core/compiler/view_manager_spec.ts
index f76824d49c..867628b608 100644
--- a/modules/angular2/test/core/compiler/view_manager_spec.ts
+++ b/modules/angular2/test/core/compiler/view_manager_spec.ts
@@ -100,7 +100,7 @@ export function main() {
       if (isBlank(renderViewRef)) {
         renderViewRef = new RenderViewRef();
       }
-      var view = new AppView(renderer, pv, MapWrapper.create());
+      var view = new AppView(renderer, pv, new Map());
       view.render = renderViewRef;
       var elementInjectors = ListWrapper.createFixedSize(pv.elementBinders.length);
       for (var i = 0; i < pv.elementBinders.length; i++) {
diff --git a/modules/angular2/test/core/compiler/view_manager_utils_spec.ts b/modules/angular2/test/core/compiler/view_manager_utils_spec.ts
index e4354b61c7..c5c99d0fbe 100644
--- a/modules/angular2/test/core/compiler/view_manager_utils_spec.ts
+++ b/modules/angular2/test/core/compiler/view_manager_utils_spec.ts
@@ -86,7 +86,7 @@ export function main() {
       if (isBlank(pv)) {
         pv = createProtoView();
       }
-      var view = new AppView(null, pv, MapWrapper.create());
+      var view = new AppView(null, pv, new Map());
       var elementInjectors = ListWrapper.createFixedSize(pv.elementBinders.length);
       var preBuiltObjects = ListWrapper.createFixedSize(pv.elementBinders.length);
       for (var i = 0; i < pv.elementBinders.length; i++) {
diff --git a/modules/angular2/test/core/compiler/view_pool_spec.ts b/modules/angular2/test/core/compiler/view_pool_spec.ts
index 2533434b31..abfbb61c78 100644
--- a/modules/angular2/test/core/compiler/view_pool_spec.ts
+++ b/modules/angular2/test/core/compiler/view_pool_spec.ts
@@ -26,7 +26,7 @@ export function main() {
 
     function createProtoView() { return new AppProtoView(null, null, null, null); }
 
-    function createView(pv) { return new AppView(null, pv, MapWrapper.create()); }
+    function createView(pv) { return new AppView(null, pv, new Map()); }
 
     it('should support multiple AppProtoViews', () => {
       var vf = createViewPool({capacity: 2});
diff --git a/modules/angular2/test/render/dom/compiler/compiler_common_tests.ts b/modules/angular2/test/render/dom/compiler/compiler_common_tests.ts
index 695eaab17a..bfb5be6567 100644
--- a/modules/angular2/test/render/dom/compiler/compiler_common_tests.ts
+++ b/modules/angular2/test/render/dom/compiler/compiler_common_tests.ts
@@ -34,7 +34,7 @@ export function runCompilerCommonTests() {
 
     function createCompiler(processClosure, urlData = null) {
       if (isBlank(urlData)) {
-        urlData = MapWrapper.create();
+        urlData = new Map();
       }
       var tplLoader = new FakeTemplateLoader(urlData);
       mockStepFactory = new MockStepFactory([new MockStep(processClosure)]);
@@ -99,7 +99,7 @@ export function runCompilerCommonTests() {
          }));
 
       it('should report loading errors', inject([AsyncTestCompleter], (async) => {
-           var compiler = createCompiler(EMPTY_STEP, MapWrapper.create());
+           var compiler = createCompiler(EMPTY_STEP, new Map());
            PromiseWrapper.catchError(
                compiler.compile(
                    new ViewDefinition({componentId: 'someId', templateAbsUrl: 'someUrl'})),
@@ -209,7 +209,7 @@ class FakeTemplateLoader extends TemplateLoader {
     }
 
     if (isPresent(template.templateAbsUrl)) {
-      var content = MapWrapper.get(this._urlData, template.templateAbsUrl);
+      var content = this._urlData.get(template.templateAbsUrl);
       return isPresent(content) ?
                  PromiseWrapper.resolve(DOM.createTemplate(content)) :
                  PromiseWrapper.reject(`Failed to fetch url "${template.templateAbsUrl}"`, null);
diff --git a/modules/angular2/test/render/dom/compiler/directive_parser_spec.ts b/modules/angular2/test/render/dom/compiler/directive_parser_spec.ts
index f8c24db235..e5edf160c0 100644
--- a/modules/angular2/test/render/dom/compiler/directive_parser_spec.ts
+++ b/modules/angular2/test/render/dom/compiler/directive_parser_spec.ts
@@ -83,16 +83,15 @@ export function main() {
       var results = process(el('<div some-decor-props></div>'),
                             {'elProp': parser.parseBinding('someExpr', '')});
       var directiveBinding = results[0].directives[0];
-      expect(MapWrapper.get(directiveBinding.propertyBindings, 'dirProp').source)
-          .toEqual('someExpr');
+      expect(directiveBinding.propertyBindings.get('dirProp').source).toEqual('someExpr');
     });
 
     it('should bind directive properties with pipes', () => {
       var results = process(el('<div some-decor-props></div>'),
                             {'elProp': parser.parseBinding('someExpr', '')});
       var directiveBinding = results[0].directives[0];
-      var pipedProp = <any>MapWrapper.get(directiveBinding.propertyBindings, 'doubleProp');
-      var simpleProp = <any>MapWrapper.get(directiveBinding.propertyBindings, 'dirProp');
+      var pipedProp = <any>directiveBinding.propertyBindings.get('doubleProp');
+      var simpleProp = <any>directiveBinding.propertyBindings.get('dirProp');
       expect(pipedProp.ast.name).toEqual('double');
       expect(pipedProp.ast.exp).toEqual(simpleProp.ast);
       expect(simpleProp.source).toEqual('someExpr');
@@ -101,7 +100,7 @@ export function main() {
     it('should bind directive properties from attribute values', () => {
       var results = process(el('<div some-decor-props el-prop="someValue"></div>'));
       var directiveBinding = results[0].directives[0];
-      var simpleProp = MapWrapper.get(directiveBinding.propertyBindings, 'dirProp');
+      var simpleProp = directiveBinding.propertyBindings.get('dirProp');
       expect(simpleProp.source).toEqual('someValue');
     });
 
@@ -111,7 +110,7 @@ export function main() {
 
       var directiveBinding = results[0].directives[0];
 
-      var ast = MapWrapper.get(directiveBinding.hostPropertyBindings, 'hostProp');
+      var ast = directiveBinding.hostPropertyBindings.get('hostProp');
       expect(ast.source).toEqual('dirProp');
     });
 
@@ -145,7 +144,7 @@ export function main() {
     it('should read attribute values', () => {
       var element = el('<input some-decor-props some-attr="someValue">');
       var results = process(element);
-      expect(MapWrapper.get(results[0].readAttributes, 'some-attr')).toEqual('someValue');
+      expect(results[0].readAttributes.get('some-attr')).toEqual('someValue');
     });
 
     it('should bind directive events', () => {
diff --git a/modules/angular2/test/render/dom/compiler/property_binding_parser_spec.ts b/modules/angular2/test/render/dom/compiler/property_binding_parser_spec.ts
index 9719f6c45e..e052d6ada1 100644
--- a/modules/angular2/test/render/dom/compiler/property_binding_parser_spec.ts
+++ b/modules/angular2/test/render/dom/compiler/property_binding_parser_spec.ts
@@ -9,7 +9,7 @@ import {CompileControl} from 'angular2/src/render/dom/compiler/compile_control';
 import {Lexer, Parser} from 'angular2/change_detection';
 import {ElementBinderBuilder} from 'angular2/src/render/dom/view/proto_view_builder';
 
-var EMPTY_MAP = MapWrapper.create();
+var EMPTY_MAP = new Map();
 
 export function main() {
   describe('PropertyBindingParser', () => {
@@ -31,7 +31,7 @@ export function main() {
 
     it('should detect [] syntax', () => {
       var results = process(el('<div [a]="b"></div>'));
-      expect(MapWrapper.get(results[0].propertyBindings, 'a').source).toEqual('b');
+      expect(results[0].propertyBindings.get('a').source).toEqual('b');
     });
 
     it('should detect [] syntax only if an attribute name starts and ends with []', () => {
@@ -41,7 +41,7 @@ export function main() {
 
     it('should detect bind- syntax', () => {
       var results = process(el('<div bind-a="b"></div>'));
-      expect(MapWrapper.get(results[0].propertyBindings, 'a').source).toEqual('b');
+      expect(results[0].propertyBindings.get('a').source).toEqual('b');
     });
 
     it('should detect bind- syntax only if an attribute name starts with bind',
@@ -49,53 +49,51 @@ export function main() {
 
     it('should detect interpolation syntax', () => {
       var results = process(el('<div a="{{b}}"></div>'));
-      expect(MapWrapper.get(results[0].propertyBindings, 'a').source).toEqual('{{b}}');
+      expect(results[0].propertyBindings.get('a').source).toEqual('{{b}}');
     });
 
     it('should store property setters as camel case', () => {
       var element = el('<div bind-some-prop="1">');
       var results = process(element);
-      expect(MapWrapper.get(results[0].propertyBindings, 'someProp')).toBeTruthy();
+      expect(results[0].propertyBindings.get('someProp')).toBeTruthy();
     });
 
     it('should detect var- syntax', () => {
       var results = process(el('<template var-a="b"></template>'));
-      expect(MapWrapper.get(results[0].variableBindings, 'b')).toEqual('a');
+      expect(results[0].variableBindings.get('b')).toEqual('a');
     });
 
     it('should store variable binding for a template element on the nestedProtoView', () => {
       var results = process(el('<template var-george="washington"></p>'), true);
       expect(results[0].variableBindings).toEqual(EMPTY_MAP);
-      expect(MapWrapper.get(results[0].nestedProtoView.variableBindings, 'washington'))
-          .toEqual('george');
+      expect(results[0].nestedProtoView.variableBindings.get('washington')).toEqual('george');
     });
 
     it('should store variable binding for a non-template element using shorthand syntax on the nestedProtoView',
        () => {
          var results = process(el('<template #george="washington"></template>'), true);
          expect(results[0].variableBindings).toEqual(EMPTY_MAP);
-         expect(MapWrapper.get(results[0].nestedProtoView.variableBindings, 'washington'))
-             .toEqual('george');
+         expect(results[0].nestedProtoView.variableBindings.get('washington')).toEqual('george');
        });
 
     it('should store variable binding for a non-template element', () => {
       var results = process(el('<p var-george="washington"></p>'));
-      expect(MapWrapper.get(results[0].variableBindings, 'washington')).toEqual('george');
+      expect(results[0].variableBindings.get('washington')).toEqual('george');
     });
 
     it('should store variable binding for a non-template element using shorthand syntax', () => {
       var results = process(el('<p #george="washington"></p>'));
-      expect(MapWrapper.get(results[0].variableBindings, 'washington')).toEqual('george');
+      expect(results[0].variableBindings.get('washington')).toEqual('george');
     });
 
     it('should store a variable binding with an implicit value', () => {
       var results = process(el('<p var-george></p>'));
-      expect(MapWrapper.get(results[0].variableBindings, '\$implicit')).toEqual('george');
+      expect(results[0].variableBindings.get('\$implicit')).toEqual('george');
     });
 
     it('should store a variable binding with an implicit value using shorthand syntax', () => {
       var results = process(el('<p #george></p>'));
-      expect(MapWrapper.get(results[0].variableBindings, '\$implicit')).toEqual('george');
+      expect(results[0].variableBindings.get('\$implicit')).toEqual('george');
     });
 
     it('should detect variable bindings only if an attribute name starts with #', () => {
@@ -143,25 +141,25 @@ export function main() {
 
     it('should store bound properties as temporal attributes', () => {
       var results = createPipeline().process(el('<div bind-a="b" [c]="d"></div>'));
-      expect(MapWrapper.get(results[0].attrs(), 'a')).toEqual('b');
-      expect(MapWrapper.get(results[0].attrs(), 'c')).toEqual('d');
+      expect(results[0].attrs().get('a')).toEqual('b');
+      expect(results[0].attrs().get('c')).toEqual('d');
     });
 
     it('should store variables as temporal attributes', () => {
       var results = createPipeline().process(el('<div var-a="b" #c="d"></div>'));
-      expect(MapWrapper.get(results[0].attrs(), 'a')).toEqual('b');
-      expect(MapWrapper.get(results[0].attrs(), 'c')).toEqual('d');
+      expect(results[0].attrs().get('a')).toEqual('b');
+      expect(results[0].attrs().get('c')).toEqual('d');
     });
 
     it('should detect [()] syntax', () => {
       var results = process(el('<div [(a)]="b"></div>'));
-      expect(MapWrapper.get(results[0].propertyBindings, 'a').source).toEqual('b');
+      expect(results[0].propertyBindings.get('a').source).toEqual('b');
       expect(results[0].eventBindings[0].source.source).toEqual('b=$event');
     });
 
     it('should detect bindon- syntax', () => {
       var results = process(el('<div bindon-a="b"></div>'));
-      expect(MapWrapper.get(results[0].propertyBindings, 'a').source).toEqual('b');
+      expect(results[0].propertyBindings.get('a').source).toEqual('b');
       expect(results[0].eventBindings[0].source.source).toEqual('b=$event');
     });
   });
diff --git a/modules/angular2/test/render/dom/compiler/view_splitter_spec.ts b/modules/angular2/test/render/dom/compiler/view_splitter_spec.ts
index 5838ecb31e..44cecd1d43 100644
--- a/modules/angular2/test/render/dom/compiler/view_splitter_spec.ts
+++ b/modules/angular2/test/render/dom/compiler/view_splitter_spec.ts
@@ -110,10 +110,9 @@ export function main() {
       it('should add property bindings from the template attribute', () => {
         var rootElement = el('<div><div template="some-prop:expr"></div></div>');
         var results = createPipeline().process(rootElement);
-        expect(
-            MapWrapper.get(results[1].inheritedElementBinder.propertyBindings, 'someProp').source)
+        expect(results[1].inheritedElementBinder.propertyBindings.get('someProp').source)
             .toEqual('expr');
-        expect(MapWrapper.get(results[1].attrs(), 'some-prop')).toEqual('expr');
+        expect(results[1].attrs().get('some-prop')).toEqual('expr');
       });
 
       it('should add variable mappings from the template attribute to the nestedProtoView', () => {
@@ -126,9 +125,9 @@ export function main() {
       it('should add entries without value as attributes to the element', () => {
         var rootElement = el('<div><div template="varname"></div></div>');
         var results = createPipeline().process(rootElement);
-        expect(MapWrapper.get(results[1].attrs(), 'varname')).toEqual('');
-        expect(results[1].inheritedElementBinder.propertyBindings).toEqual(MapWrapper.create());
-        expect(results[1].inheritedElementBinder.variableBindings).toEqual(MapWrapper.create());
+        expect(results[1].attrs().get('varname')).toEqual('');
+        expect(results[1].inheritedElementBinder.propertyBindings).toEqual(new Map());
+        expect(results[1].inheritedElementBinder.variableBindings).toEqual(new Map());
       });
 
       it('should iterate properly after a template dom modification', () => {
@@ -197,9 +196,9 @@ export function main() {
       it('should add property bindings from the template attribute', () => {
         var rootElement = el('<div><div *prop="expr"></div></div>');
         var results = createPipeline().process(rootElement);
-        expect(MapWrapper.get(results[1].inheritedElementBinder.propertyBindings, 'prop').source)
+        expect(results[1].inheritedElementBinder.propertyBindings.get('prop').source)
             .toEqual('expr');
-        expect(MapWrapper.get(results[1].attrs(), 'prop')).toEqual('expr');
+        expect(results[1].attrs().get('prop')).toEqual('expr');
       });
 
       it('should add variable mappings from the template attribute to the nestedProtoView', () => {
@@ -212,9 +211,9 @@ export function main() {
       it('should add entries without value as attribute to the element', () => {
         var rootElement = el('<div><div *varname></div></div>');
         var results = createPipeline().process(rootElement);
-        expect(MapWrapper.get(results[1].attrs(), 'varname')).toEqual('');
-        expect(results[1].inheritedElementBinder.propertyBindings).toEqual(MapWrapper.create());
-        expect(results[1].inheritedElementBinder.variableBindings).toEqual(MapWrapper.create());
+        expect(results[1].attrs().get('varname')).toEqual('');
+        expect(results[1].inheritedElementBinder.propertyBindings).toEqual(new Map());
+        expect(results[1].inheritedElementBinder.variableBindings).toEqual(new Map());
       });
 
       it('should iterate properly after a template dom modification', () => {
diff --git a/modules/angular2/test/render/dom/convert_spec.ts b/modules/angular2/test/render/dom/convert_spec.ts
index 276ff6fdce..140e868c94 100644
--- a/modules/angular2/test/render/dom/convert_spec.ts
+++ b/modules/angular2/test/render/dom/convert_spec.ts
@@ -27,28 +27,24 @@ export function main() {
         changeDetection: 'CHECK_ONCE'
       });
       var map = directiveMetadataToMap(someComponent);
-      expect(MapWrapper.get(map, 'compileChildren')).toEqual(false);
-      expect(MapWrapper.get(map, 'hostListeners'))
-          .toEqual(MapWrapper.createFromPairs([['LKey', 'LVal']]));
-      expect(MapWrapper.get(map, 'hostProperties'))
-          .toEqual(MapWrapper.createFromPairs([['PKey', 'PVal']]));
-      expect(MapWrapper.get(map, 'hostActions'))
-          .toEqual(MapWrapper.createFromPairs([['AcKey', 'AcVal']]));
-      expect(MapWrapper.get(map, 'hostAttributes'))
-          .toEqual(MapWrapper.createFromPairs([['AtKey', 'AtVal']]));
-      expect(MapWrapper.get(map, 'id')).toEqual('someComponent');
-      expect(MapWrapper.get(map, 'properties')).toEqual(['propKey: propVal']);
-      expect(MapWrapper.get(map, 'readAttributes')).toEqual(['read1', 'read2']);
-      expect(MapWrapper.get(map, 'selector')).toEqual('some-comp');
-      expect(MapWrapper.get(map, 'type')).toEqual(DirectiveMetadata.COMPONENT_TYPE);
-      expect(MapWrapper.get(map, 'callOnDestroy')).toEqual(true);
-      expect(MapWrapper.get(map, 'callOnCheck')).toEqual(true);
-      expect(MapWrapper.get(map, 'callOnChange')).toEqual(true);
-      expect(MapWrapper.get(map, 'callOnInit')).toEqual(true);
-      expect(MapWrapper.get(map, 'callOnAllChangesDone')).toEqual(true);
-      expect(MapWrapper.get(map, 'exportAs')).toEqual('aaa');
-      expect(MapWrapper.get(map, 'events')).toEqual(['onFoo', 'onBar']);
-      expect(MapWrapper.get(map, 'changeDetection')).toEqual('CHECK_ONCE');
+      expect(map.get('compileChildren')).toEqual(false);
+      expect(map.get('hostListeners')).toEqual(MapWrapper.createFromPairs([['LKey', 'LVal']]));
+      expect(map.get('hostProperties')).toEqual(MapWrapper.createFromPairs([['PKey', 'PVal']]));
+      expect(map.get('hostActions')).toEqual(MapWrapper.createFromPairs([['AcKey', 'AcVal']]));
+      expect(map.get('hostAttributes')).toEqual(MapWrapper.createFromPairs([['AtKey', 'AtVal']]));
+      expect(map.get('id')).toEqual('someComponent');
+      expect(map.get('properties')).toEqual(['propKey: propVal']);
+      expect(map.get('readAttributes')).toEqual(['read1', 'read2']);
+      expect(map.get('selector')).toEqual('some-comp');
+      expect(map.get('type')).toEqual(DirectiveMetadata.COMPONENT_TYPE);
+      expect(map.get('callOnDestroy')).toEqual(true);
+      expect(map.get('callOnCheck')).toEqual(true);
+      expect(map.get('callOnChange')).toEqual(true);
+      expect(map.get('callOnInit')).toEqual(true);
+      expect(map.get('callOnAllChangesDone')).toEqual(true);
+      expect(map.get('exportAs')).toEqual('aaa');
+      expect(map.get('events')).toEqual(['onFoo', 'onBar']);
+      expect(map.get('changeDetection')).toEqual('CHECK_ONCE');
     });
 
     it('mapToDirectiveMetadata', () => {
diff --git a/modules/angular2/test/render/dom/dom_renderer_integration_spec.ts b/modules/angular2/test/render/dom/dom_renderer_integration_spec.ts
index 8ab33112b7..a3ee55aaf7 100644
--- a/modules/angular2/test/render/dom/dom_renderer_integration_spec.ts
+++ b/modules/angular2/test/render/dom/dom_renderer_integration_spec.ts
@@ -177,7 +177,7 @@ export function main() {
                // event type
                expect(eventEntry[1]).toEqual('change');
                // actual event
-               expect((<any>MapWrapper.get(eventEntry[2], '$event')).type).toEqual('change');
+               expect((<Map<any, any>>eventEntry[2]).get('$event').type).toEqual('change');
                async.done();
              });
 
diff --git a/modules/angular2/test/render/dom/events/event_manager_spec.ts b/modules/angular2/test/render/dom/events/event_manager_spec.ts
index cbe2846eb6..8dc5bc969e 100644
--- a/modules/angular2/test/render/dom/events/event_manager_spec.ts
+++ b/modules/angular2/test/render/dom/events/event_manager_spec.ts
@@ -31,7 +31,7 @@ export function main() {
       var plugin = new FakeEventManagerPlugin(['click']);
       var manager = new EventManager([plugin, domEventPlugin], new FakeNgZone());
       manager.addEventListener(element, 'click', handler);
-      expect(MapWrapper.get(plugin._nonBubbleEventHandlers, 'click')).toBe(handler);
+      expect(plugin._nonBubbleEventHandlers.get('click')).toBe(handler);
     });
 
     it('should delegate bubbling events to plugins', () => {
@@ -40,7 +40,7 @@ export function main() {
       var plugin = new FakeEventManagerPlugin(['click']);
       var manager = new EventManager([plugin, domEventPlugin], new FakeNgZone());
       manager.addEventListener(element, '^click', handler);
-      expect(MapWrapper.get(plugin._bubbleEventHandlers, 'click')).toBe(handler);
+      expect(plugin._bubbleEventHandlers.get('click')).toBe(handler);
     });
 
     it('should delegate event bindings to the first plugin supporting the event', () => {
@@ -53,9 +53,9 @@ export function main() {
       manager.addEventListener(element, 'click', clickHandler);
       manager.addEventListener(element, 'dblclick', dblClickHandler);
       expect(MapWrapper.contains(plugin1._nonBubbleEventHandlers, 'click')).toBe(false);
-      expect(MapWrapper.get(plugin2._nonBubbleEventHandlers, 'click')).toBe(clickHandler);
+      expect(plugin2._nonBubbleEventHandlers.get('click')).toBe(clickHandler);
       expect(MapWrapper.contains(plugin2._nonBubbleEventHandlers, 'dblclick')).toBe(false);
-      expect(MapWrapper.get(plugin1._nonBubbleEventHandlers, 'dblclick')).toBe(dblClickHandler);
+      expect(plugin1._nonBubbleEventHandlers.get('dblclick')).toBe(dblClickHandler);
     });
 
     it('should throw when no plugin can handle the event', () => {
@@ -126,15 +126,18 @@ class FakeEventManagerPlugin extends EventManagerPlugin {
   constructor(supports: List<string>) {
     super();
     this._supports = supports;
-    this._nonBubbleEventHandlers = MapWrapper.create();
-    this._bubbleEventHandlers = MapWrapper.create();
+    this._nonBubbleEventHandlers = new Map();
+    this._bubbleEventHandlers = new Map();
   }
 
   supports(eventName: string): boolean { return ListWrapper.contains(this._supports, eventName); }
 
   addEventListener(element, eventName: string, handler: Function, shouldSupportBubble: boolean) {
-    MapWrapper.set(shouldSupportBubble ? this._bubbleEventHandlers : this._nonBubbleEventHandlers,
-                   eventName, handler);
+    if (shouldSupportBubble) {
+      this._bubbleEventHandlers.set(eventName, handler);
+    } else {
+      this._nonBubbleEventHandlers.set(eventName, handler);
+    }
     return () => {
       MapWrapper.delete(
           shouldSupportBubble ? this._bubbleEventHandlers : this._nonBubbleEventHandlers, eventName)
diff --git a/modules/angular2/test/render/dom/shadow_dom/emulated_scoped_shadow_dom_strategy_spec.ts b/modules/angular2/test/render/dom/shadow_dom/emulated_scoped_shadow_dom_strategy_spec.ts
index 451f7de806..ae7cae8acf 100644
--- a/modules/angular2/test/render/dom/shadow_dom/emulated_scoped_shadow_dom_strategy_spec.ts
+++ b/modules/angular2/test/render/dom/shadow_dom/emulated_scoped_shadow_dom_strategy_spec.ts
@@ -142,11 +142,11 @@ class FakeXHR extends XHR {
 
   constructor() {
     super();
-    this._responses = MapWrapper.create();
+    this._responses = new Map();
   }
 
   get(url: string): Promise<string> {
-    var response = MapWrapper.get(this._responses, url);
+    var response = this._responses.get(url);
     if (isBlank(response)) {
       return PromiseWrapper.reject('xhr error', null);
     }
@@ -154,5 +154,5 @@ class FakeXHR extends XHR {
     return PromiseWrapper.resolve(response);
   }
 
-  reply(url: string, response: string) { MapWrapper.set(this._responses, url, response); }
+  reply(url: string, response: string) { this._responses.set(url, response); }
 }
diff --git a/modules/angular2/test/render/dom/shadow_dom/style_inliner_spec.ts b/modules/angular2/test/render/dom/shadow_dom/style_inliner_spec.ts
index 4f41b83cb8..db7cedd386 100644
--- a/modules/angular2/test/render/dom/shadow_dom/style_inliner_spec.ts
+++ b/modules/angular2/test/render/dom/shadow_dom/style_inliner_spec.ts
@@ -187,11 +187,11 @@ class FakeXHR extends XHR {
 
   constructor() {
     super();
-    this._responses = MapWrapper.create();
+    this._responses = new Map();
   }
 
   get(url: string): Promise<string> {
-    var response = MapWrapper.get(this._responses, url);
+    var response = this._responses.get(url);
     if (isBlank(response)) {
       return PromiseWrapper.reject('xhr error', null);
     }
@@ -199,5 +199,5 @@ class FakeXHR extends XHR {
     return PromiseWrapper.resolve(response);
   }
 
-  reply(url: string, response: string) { MapWrapper.set(this._responses, url, response); }
+  reply(url: string, response: string) { this._responses.set(url, response); }
 }
diff --git a/modules/angular2/traceur-runtime.d.ts b/modules/angular2/traceur-runtime.d.ts
index 2b151029cb..9ccbc4aed7 100644
--- a/modules/angular2/traceur-runtime.d.ts
+++ b/modules/angular2/traceur-runtime.d.ts
@@ -48,8 +48,8 @@ declare var Map: {
   new (): Map<any, any>;
   new<K, V>(): Map<K, V>;
   // alexeagle: PATCHED
-  new<K, V>(m: Map<K, V>): Map<K, V>;
-  new<K, V>(l: List<any>): Map<K, V>;
+  new<K, V>(m: Map<K, V>): Map<any, any>;
+  new<K, V>(l: List<any>): Map<any, any>;
   prototype: Map<any, any>;
 };
 
diff --git a/modules/angular2_material/src/components/grid_list/grid_list.ts b/modules/angular2_material/src/components/grid_list/grid_list.ts
index c13fae1844..756c729875 100644
--- a/modules/angular2_material/src/components/grid_list/grid_list.ts
+++ b/modules/angular2_material/src/components/grid_list/grid_list.ts
@@ -50,7 +50,7 @@ export class MdGridList {
     this.rows = 0;
   }
 
-  set cols(value) {
+  set cols(value: any) {
     this._cols = isString(value) ? NumberWrapper.parseInt(value, 10) : <number>value;
   }
 
diff --git a/modules/benchmarks/src/compiler/compiler_benchmark.ts b/modules/benchmarks/src/compiler/compiler_benchmark.ts
index 7c115a624c..5ff4b5e038 100644
--- a/modules/benchmarks/src/compiler/compiler_benchmark.ts
+++ b/modules/benchmarks/src/compiler/compiler_benchmark.ts
@@ -101,7 +101,7 @@ class MultipleTemplateResolver extends TemplateResolver {
   constructor(multiple: number, components: List<Type>) {
     super();
     this._multiple = multiple;
-    this._cache = MapWrapper.create();
+    this._cache = new Map();
     ListWrapper.forEach(components, (c) => this._warmUp(c));
   }
 
@@ -111,13 +111,13 @@ class MultipleTemplateResolver extends TemplateResolver {
     for (var i = 0; i < this._multiple; ++i) {
       multiplier[i] = view.template;
     }
-    MapWrapper.set(this._cache, component, ListWrapper.join(multiplier, ''));
+    this._cache.set(component, ListWrapper.join(multiplier, ''));
   }
 
   resolve(component: Type): viewModule.View {
     var view = super.resolve(component);
     var myView = new viewModule.View(
-        {template:<string>MapWrapper.get(this._cache, component), directives: view.directives});
+        {template:<string>this._cache.get(component), directives: view.directives});
     return myView;
   }
 }
diff --git a/modules/benchmarks/src/naive_infinite_scroll/cells.ts b/modules/benchmarks/src/naive_infinite_scroll/cells.ts
index 709ef38b47..57a605ed28 100644
--- a/modules/benchmarks/src/naive_infinite_scroll/cells.ts
+++ b/modules/benchmarks/src/naive_infinite_scroll/cells.ts
@@ -7,9 +7,9 @@ import {Component, Directive, View} from 'angular2/angular2';
 export class HasStyle {
   style: Map<any, any>;
 
-  constructor() { this.style = MapWrapper.create(); }
+  constructor() { this.style = new Map(); }
 
-  set width(w) { MapWrapper.set(this.style, 'width', w); }
+  set width(w) { this.style.set('width', w); }
 }
 
 @Component({selector: 'company-name', properties: ['width: cell-width', 'company']})
@@ -33,7 +33,7 @@ export class OfferingNameComponent extends HasStyle {
 export class Stage {
   name: string;
   isDisabled: boolean;
-  style: Map;
+  style: Map<string, string>;
   apply: Function;
 }
 
@@ -73,9 +73,8 @@ export class StageButtonsComponent extends HasStyle {
       var stage = new Stage();
       stage.name = status;
       stage.isDisabled = disabled;
-      var stageStyle = MapWrapper.create();
-      MapWrapper.set(stageStyle, 'background-color',
-                     disabled ? '#DDD' : isCurrent ? '#DDF' : '#FDD');
+      var stageStyle = new Map<string, string>();
+      stageStyle.set('background-color', disabled ? '#DDD' : isCurrent ? '#DDF' : '#FDD');
       stage.style = stageStyle;
       if (isCurrent) {
         disabled = false;
diff --git a/modules/benchmarks/src/naive_infinite_scroll/common.ts b/modules/benchmarks/src/naive_infinite_scroll/common.ts
index 4ed1c36da1..8858cd3c1e 100644
--- a/modules/benchmarks/src/naive_infinite_scroll/common.ts
+++ b/modules/benchmarks/src/naive_infinite_scroll/common.ts
@@ -57,7 +57,7 @@ export class CustomDate {
 export class RawEntity {
   _data: Map<any, any>;
 
-  constructor() { this._data = MapWrapper.create(); }
+  constructor() { this._data = new Map(); }
 
   get(key: string) {
     if (key.indexOf('.') == -1) {