Prettified all files.

lib/interface.js

@@ -7,11 +7,10 @@ export default class Interface {
     static implementationError(klass) {
         let interfaceKeys = Reflect.ownKeys(this.prototype)
         let classKeys = Reflect.ownKeys(klass.prototype)
-        for(let key of interfaceKeys) {
+        for (let key of interfaceKeys) {
             let interfaceDesc = this.prototype[key]
             let classDesc = klass.prototype[key]
-            if (typeof(classDesc) == 'undefined')
-                return 'Missing ' + key
+            if (typeof classDesc == 'undefined') return 'Missing ' + key
         }
         return null
     }
@@ -23,8 +22,8 @@ export default class Interface {
         return error == null
     }
 
-        // TODO: Specify optional methods
-//     static optionalMethods() {
-//         return [this.onMouseWheel]
-//     }
+    // TODO: Specify optional methods
+    //     static optionalMethods() {
+    //         return [this.onMouseWheel]
+    //     }
 }