From fad25c2b104685b5ea290cdf7095f503db6480a1 Mon Sep 17 00:00:00 2001
From: Kevin Moore <kevmoo@google.com>
Date: Mon, 23 Feb 2015 11:44:59 -0800
Subject: [PATCH] chore: Adding return types to Dart facades

Closes #758
---
 modules/angular2/src/facade/dom.dart  | 14 +++++++-------
 modules/angular2/src/facade/lang.dart |  6 +++---
 modules/angular2/src/facade/math.dart |  2 +-
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/modules/angular2/src/facade/dom.dart b/modules/angular2/src/facade/dom.dart
index 25283272a1..43613afbfe 100644
--- a/modules/angular2/src/facade/dom.dart
+++ b/modules/angular2/src/facade/dom.dart
@@ -144,13 +144,13 @@ class DOM {
   static bool hasClass(Element element, String classname) =>
       element.classes.contains(classname);
 
-  static setStyle(Element element, String stylename, String stylevalue) {
+  static void setStyle(Element element, String stylename, String stylevalue) {
       element.style.setProperty(stylename, stylevalue);
   }
-  static removeStyle(Element element, String stylename) {
+  static void removeStyle(Element element, String stylename) {
       element.style.removeProperty(stylename);
   }
-  static getStyle(Element element, String stylename) {
+  static String getStyle(Element element, String stylename) {
       return element.style.getPropertyValue(stylename);
   }
 
@@ -193,8 +193,8 @@ class DOM {
 }
 
 class CSSRuleWrapper {
-  static isPageRule(CssRule rule) => rule is CssPageRule;
-  static isStyleRule(CssRule rule) => rule is CssStyleRule;
-  static isMediaRule(CssRule rule) => rule is CssMediaRule;
-  static isKeyframesRule(CssRule rule) => rule is CssKeyframesRule;
+  static bool isPageRule(CssRule rule) => rule is CssPageRule;
+  static bool isStyleRule(CssRule rule) => rule is CssStyleRule;
+  static bool isMediaRule(CssRule rule) => rule is CssMediaRule;
+  static bool isKeyframesRule(CssRule rule) => rule is CssKeyframesRule;
 }
diff --git a/modules/angular2/src/facade/lang.dart b/modules/angular2/src/facade/lang.dart
index ceb79f6633..e6a121f01c 100644
--- a/modules/angular2/src/facade/lang.dart
+++ b/modules/angular2/src/facade/lang.dart
@@ -193,14 +193,14 @@ bool assertionsEnabled() {
 // Can't be all uppercase as our transpiler would think it is a special directive...
 class Json {
   static parse(String s) => convert.JSON.decode(s);
-  static stringify(data) => convert.JSON.encode(data);
+  static String stringify(data) => convert.JSON.encode(data);
 }
 
 class DateWrapper {
-  static fromMillis(int ms) {
+  static DateTime fromMillis(int ms) {
     return new DateTime.fromMillisecondsSinceEpoch(ms);
   }
-  static now() {
+  static DateTime now() {
     return new DateTime.now();
   }
 }
diff --git a/modules/angular2/src/facade/math.dart b/modules/angular2/src/facade/math.dart
index ef37a0b178..034723fd5d 100644
--- a/modules/angular2/src/facade/math.dart
+++ b/modules/angular2/src/facade/math.dart
@@ -3,7 +3,7 @@ library angular.core.facade.math;
 import 'dart:core' show double, num;
 import 'dart:math' as math;
 
-var NaN = double.NAN;
+const NaN = double.NAN;
 
 class Math {
   static num pow(num x, num exponent) {