build: Update eslint-config-wikimedia to 0.28.0

Change-Id: Ia565bd4d314b7b512a46c4bb2af74784d5c2edc1

modules/.eslintrc.json

@@ -1,12 +1,11 @@
 {
 	"root": true,
 	"extends": [
-		"wikimedia/client-es6",
+		"wikimedia/client",
 		"wikimedia/jquery",
 		"wikimedia/mediawiki"
 	],
 	"rules": {
-		"max-len": "off",
-		"prefer-arrow-callback": "error"
+		"max-len": "off"
 	}
 }

modules/ve-syntaxhighlight/ve.ce.MWSyntaxHighlightNode.js

@@ -28,9 +28,9 @@ ve.ce.MWSyntaxHighlightNode.static.name = 'mwSyntaxHighlight';
 
 // Inherits from ve.ce.GeneratedContentNode
 ve.ce.MWSyntaxHighlightNode.prototype.generateContents = function () {
-	return mw.loader.using( 'ext.pygments' ).then( () =>
+	return mw.loader.using( 'ext.pygments' ).then(
 		// Parent method
-		ve.ce.MWExtensionNode.prototype.generateContents.apply( this, arguments )
+		() => ve.ce.MWExtensionNode.prototype.generateContents.apply( this, arguments )
 	);
 };
 

modules/ve-syntaxhighlight/ve.ui.MWSyntaxHighlightWindow.js

@@ -40,8 +40,7 @@ ve.ui.MWSyntaxHighlightWindow.prototype.initialize = function () {
 		$overlay: this.$overlay,
 		menu: {
 			filterFromInput: true,
-			items: ve.dm.MWSyntaxHighlightNode.static.getLanguages().map( ( lang ) =>
-				new OO.ui.MenuOptionWidget( { data: lang, label: lang || noneMsg } )
+			items: ve.dm.MWSyntaxHighlightNode.static.getLanguages().map( ( lang ) => new OO.ui.MenuOptionWidget( { data: lang, label: lang || noneMsg } )
 			)
 		},
 		validate: function ( input ) {

package.json

@@ -5,7 +5,7 @@
 		"test": "grunt test"
 	},
 	"devDependencies": {
-		"eslint-config-wikimedia": "0.27.0",
+		"eslint-config-wikimedia": "0.28.0",
 		"grunt": "1.6.1",
 		"grunt-banana-checker": "0.13.0",
 		"grunt-contrib-watch": "1.1.0",