Make emitters via energy.to(target) from energy 0.4.0: ryanve/energy#3

Author: ryanve

package.json

@@ -13,12 +13,12 @@
   },
   "dependencies": {
     "cargo": "~0.7.0",
-    "energy": "~0.3.0"
+    "energy": "~0.4.0"
   },
   "optionalDependencies": {},
   "devDependencies": {
     "aok": "~1.8.1",
-    "universal": "ryanve/universal#08f6e375fc6a6fd508280c7f1bddf91a5df7d53c",
+    "universal": "0.1.0",
     "grunt-contrib-uglify": "~0.4.0",
     "grunt-contrib-concat": "~0.3.0",
     "grunt-contrib-jshint": "~0.9.0"

src/index.js

@@ -113,22 +113,12 @@
     else throw new Error
     forget.emit(feature, feature)
   }
-  
-  /**
-   * @param {Object} o
-   * @param {Object} src
-   * @return {Object}
-   */
-  function extend(o, src) {
-    for (var k in src) if (src[k] != null) o[k] = src[k]
-    return o
-  }
 
   return {
     // convert the setters into emitters
-    'enable': extend(setter(true), energy()),
-    'disable': extend(setter(false), energy()),
-    'forget': extend(forget, energy()),
+    'enable': energy.to(setter(true)),
+    'disable': energy.to(setter(false)),
+    'forget': energy.to(forget),
     'enabled': getter(true),
     'disabled': getter(false),
     'known': known