fix: UMD fixes and formatting

widget.js

@@ -5,10 +5,10 @@
     module.exports = factory.apply(root, modules.map(require));
   } else {
     root["mu-jquery-widget/widget"] = factory.apply(root, modules.map(function (m) {
-      return {
+      return this[m] || root[m];
+    }, {
         "jquery": root.jQuery
-      }[m] || root[m];
-    }));
+      }));
   }
 })(["jquery"], this, function ($) {
   var re_space = /\s+/;
@@ -41,30 +41,30 @@
       }
     });
   }, {
-      "on": function (events, selector, data, handler) {
-        var me = this;
+    "on": function (events, selector, data, handler) {
+      var me = this;
 
-        switch (arguments.length) {
-          case 3:
-            handler = data;
-            data = undefined;
-            break;
-
-          case 2:
-            handler = selector;
-            selector = undefined;
-            data = undefined;
-            break;
+      switch (arguments.length) {
+        case 3:
+          handler = data;
+          data = undefined;
+          break;
 
-          case 1:
-            throw new Error("not enough arguments");
-        }
+        case 2:
+          handler = selector;
+          selector = undefined;
+          data = undefined;
+          break;
 
-        me.$element.on(name.call(events, me.ns), selector, data, $.proxy(handler, me));
-      },
-      "off": function (events, selector, handler) {
-        var me = this;
-        me.$element.off(name.call(events, me.ns), selector, handler);
+        case 1:
+          throw new Error("not enough arguments");
       }
-    }];
+
+      me.$element.on(name.call(events, me.ns), selector, data, $.proxy(handler, me));
+    },
+    "off": function (events, selector, handler) {
+      var me = this;
+      me.$element.off(name.call(events, me.ns), selector, handler);
+    }
+  }];
 });