From 80341cb9badd952fdc80094df4123629313b4cc4 Mon Sep 17 00:00:00 2001
From: Misko Hevery
Date: Wed, 1 May 2013 20:55:25 -0400
Subject: feat(injector): add has method for querying

Closes #2556
---
 src/auto/injector.js |  5 ++++-
 src/ng/animation.js  | 10 +++-------
 2 files changed, 7 insertions(+), 8 deletions(-)

(limited to 'src')

diff --git a/src/auto/injector.js b/src/auto/injector.js
index b2795693..6b2865ef 100644
--- a/src/auto/injector.js
+++ b/src/auto/injector.js
@@ -597,7 +597,10 @@ function createInjector(modulesToLoad) {
       invoke: invoke,
       instantiate: instantiate,
       get: getService,
-      annotate: annotate
+      annotate: annotate,
+      has: function(name) {
+        return providerCache.hasOwnProperty(name + providerSuffix) || cache.hasOwnProperty(name);
+      }
     };
   }
 }
diff --git a/src/ng/animation.js b/src/ng/animation.js
index 9a5a5a95..76cf943e 100644
--- a/src/ng/animation.js
+++ b/src/ng/animation.js
@@ -51,13 +51,9 @@ function $AnimationProvider($provide) {
      */
     return function $animation(name) {
       if (name) {
-        try {
-          return $injector.get(camelCase(name) + suffix);
-        } catch (e) {
-          //TODO(misko): this is a hack! we should have a better way to test if the injector has a given key.
-          // The issue is that the animations are optional, and if not present they should be silently ignored.
-          // The proper way to fix this is to add API onto the injector so that we can ask to see if a given
-          // animation is supported.
+        var animationName = camelCase(name) + suffix;
+        if ($injector.has(animationName)) {
+          return $injector.get(animationName);
         }
       }
     }
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