Update dangling comma eslint rule.

- In ESLint v6, dangling commas on functions are now linted.

.eslintrc.yml

@@ -24,7 +24,9 @@ rules:
   #     allow: [^vfunc_, ^on_, _instance_init]
   comma-dangle:
     - error
-    - always-multiline
+    - arrays: always-multiline
+      objects: always-multiline
+      functions: never
   comma-spacing:
     - error
     - before: false

examples/gtk-application.js

@@ -20,7 +20,7 @@ var ExampleApplication = GObject.registerClass({
             'ExampleProperty',                  // nickname
             'An example read write property',   // description
             GObject.ParamFlags.READWRITE,       // read/write/construct...
-            'a default value',
+            'a default value'
         ),
     },
     Signals: {'examplesig': {param_types: [GObject.TYPE_INT]}},
@@ -83,7 +83,7 @@ var ExampleApplication = GObject.registerClass({
         notif.set_title('Example Notification');
         notif.set_body('Example Body');
         notif.set_icon(
-            new Gio.ThemedIcon({name: 'dialog-information-symbolic'}),
+            new Gio.ThemedIcon({name: 'dialog-information-symbolic'})
         );
 
         // A default action for when the body of the notification is clicked
@@ -92,7 +92,7 @@ var ExampleApplication = GObject.registerClass({
         // A button for the notification
         notif.add_button(
             'Button Text',
-            "app.exampleAction('exampleParameter')",
+            "app.exampleAction('exampleParameter')"
         );
 
         // This won't actually be shown, since an application needs a .desktop

installed-tests/js/testTweener.js

@@ -282,7 +282,7 @@ describe('Tweener', function () {
             },
             function (obj, val) {
                 obj.x = -val;
-            },
+            }
         );
 
         var objectA = {
@@ -343,7 +343,7 @@ describe('Tweener', function () {
             function (val) {
                 return [{name: 'x', value: val},
                     {name: 'y', value: -val}];
-            },
+            }
         );
 
         var objectA = {