Wrapperless dart:html and friends

lib/runtime/dart/async.js

 dart_library.library('dart/async', null, /* Imports */[
   'dart/_runtime',
   'dart/core',
   'dart/_internal',
   'dart/collection'
 ], /* Lazy imports */[
   'dart/_isolate_helper'
 ], function(exports, dart, core, _internal, collection, _isolate_helper) {
   'use strict';
   let dartx = dart.dartx;
@@ skipping 5232 matching lines @@
     bindBinaryCallback(f, opts) {
       let runGuarded = opts && 'runGuarded' in opts ? opts.runGuarded : true;
       let registered = this.registerBinaryCallback(f);
       if (dart.notNull(runGuarded)) {
         return dart.fn((arg1, arg2) => this.runBinaryGuarded(registered, arg1, arg2));
       } else {
         return dart.fn((arg1, arg2) => this.runBinary(registered, arg1, arg2));
       }
     }
     get(key) {
-      let result = this[_map].get(key);
-      if (result != null || dart.notNull(this[_map].containsKey(key))) return result;
+      let result = this[_map][dartx.get](key);
+      if (result != null || dart.notNull(this[_map][dartx.containsKey](key))) return result;
       if (this.parent != null) {
         let value = this.parent.get(key);
         if (value != null) {
-          this[_map].set(key, value);
+          this[_map][dartx.set](key, value);
         }
         return value;
       }
       dart.assert(dart.equals(this, _ROOT_ZONE));
       return null;
     }
     handleUncaughtError(error, stackTrace) {
       let implementation = this[_handleUncaughtError];
       dart.assert(implementation != null);
       let parentDelegate = _parentDelegate(implementation.zone);
@@ skipping 541 matching lines @@
   exports.ScheduleMicrotaskHandler = ScheduleMicrotaskHandler;
   exports.CreateTimerHandler = CreateTimerHandler;
   exports.CreatePeriodicTimerHandler = CreatePeriodicTimerHandler;
   exports.PrintHandler = PrintHandler;
   exports.ForkHandler = ForkHandler;
   exports.ZoneSpecification = ZoneSpecification;
   exports.ZoneDelegate = ZoneDelegate;
   exports.Zone = Zone;
   exports.runZoned = runZoned;
 });