Aria and data props now prefix sub-props

Resolves #70

Author: ethul

docs/React/DOM/Props.md

@@ -18,6 +18,12 @@ unsafeMkProps :: forall val. String -> val -> Props
 unsafeUnfoldProps :: forall vals. String -> {  | vals } -> Props
 ```
 
+#### `unsafePrefixProps`
+
+``` purescript
+unsafePrefixProps :: forall vals. String -> {  | vals } -> Props
+```
+
 #### `unsafeFromPropsArray`
 
 ``` purescript

src/React/DOM/Props.js

@@ -22,7 +22,7 @@ function unsafeUnfoldProps(key) {
 
     for (var subprop in value) {
       if (value.hasOwnProperty(subprop)) {
-          result[subprop] = value[subprop];
+        result[subprop] = value[subprop];
       }
     }
 
@@ -31,6 +31,21 @@ function unsafeUnfoldProps(key) {
 }
 exports.unsafeUnfoldProps = unsafeUnfoldProps;
 
+function unsafePrefixProps(prefix) {
+  return function(value){
+    var result = {};
+
+    for (var prop in value) {
+      if (value.hasOwnProperty(prop)) {
+        result[prefix + prop] = value[prop];
+      }
+    }
+
+    return result;
+  };
+}
+exports.unsafePrefixProps = unsafePrefixProps;
+
 function unsafeFromPropsArray(props) {
   var result = {};
 

src/React/DOM/Props.purs

@@ -8,13 +8,15 @@ foreign import unsafeMkProps :: forall val. String -> val -> Props
 
 foreign import unsafeUnfoldProps :: forall vals. String -> { | vals } -> Props
 
+foreign import unsafePrefixProps :: forall vals. String -> { | vals } -> Props
+
 foreign import unsafeFromPropsArray :: forall props. Array Props -> props
 
 aria :: forall ariaAttrs. { | ariaAttrs } -> Props
-aria = unsafeUnfoldProps "aria"
+aria = unsafePrefixProps "aria-"
 
 _data :: forall dataAttrs. { | dataAttrs } -> Props
-_data = unsafeUnfoldProps "data"
+_data = unsafePrefixProps "data-"
 
 style :: forall style. { | style } -> Props
 style = unsafeUnfoldProps "style"