Fix warning of constraints in ffi

Author: Jan Vincent Liwanag

src/React/Basic/Emotion.js

@@ -33,8 +33,8 @@ exports.elementKeyed_ = (component, props) =>
 
 exports.global = Emotion.Global;
 
-exports.css = _homogeneousDict => Emotion.css;
+exports._css = Emotion.css;
 
 exports.important = prop => typeof prop === "string" ? prop + " !important" : prop;
 
-exports.keyframes = _homogeneousDict => Emotion.keyframes;
+exports._keyframes = Emotion.keyframes;

src/React/Basic/Emotion.purs

@@ -177,11 +177,17 @@ foreign import elementKeyed_ ::
 
 foreign import global :: ReactComponent { styles :: Style }
 
-foreign import css :: forall r. Homogeneous r StyleProperty => { | r } -> Style
+css :: forall r. Homogeneous r StyleProperty => { | r } -> Style
+css = _css
+
+foreign import _css :: forall r. { | r } -> Style
 
 foreign import important :: StyleProperty -> StyleProperty
 
-foreign import keyframes :: forall r. Homogeneous r Style => { | r } -> StyleProperty
+keyframes :: forall r. Homogeneous r Style => { | r } -> StyleProperty
+keyframes = _keyframes
+
+foreign import _keyframes :: forall r. { | r } -> StyleProperty
 
 nested :: Style -> StyleProperty
 nested = unsafeCoerce