Build: Add jscs task for code style checking

.jscs.json

@@ -0,0 +1,23 @@
+{
+    "requireCurlyBraces": [ "if", "else", "for", "while", "do" ],
+    "requireSpaceAfterKeywords": [ "if", "else", "for", "while", "do", "switch", "return" ],
+    "requireSpacesInFunctionExpression": {
+        "beforeOpeningCurlyBrace": true
+    },
+    "disallowSpacesInFunctionExpression": {
+        "beforeOpeningRoundBrace": true
+    },
+    "requireMultipleVarDecl": true,
+    "requireSpacesInsideObjectBrackets": "all",
+    "requireSpacesInsideArrayBrackets": "all",
+    "disallowLeftStickedOperators": [ "?", "-", "/", "*", "=", "==", "===", "!=", "!==", ">", ">=", "<", "<=" ],
+    "disallowRightStickedOperators": [ "?", "/", "*", ":", "=", "==", "===", "!=", "!==", ">", ">=", "<", "<="],
+    "requireRightStickedOperators": [ "!" ],
+    "requireLeftStickedOperators": [ "," ],
+    "disallowKeywords": [ "with" ],
+    "disallowMultipleLineBreaks": true,
+    "disallowKeywordsOnNewLine": [ "else" ],
+    "requireLineFeedAtFileEnd": true,
+
+    "excludeFiles": [ "src/intro.js", "src/outro.js" ]
+}

Gruntfile.js

@@ -105,6 +105,7 @@ grunt.loadNpmTasks( "grunt-contrib-uglify" );
 grunt.loadNpmTasks( "grunt-contrib-concat" );
 grunt.loadNpmTasks( "grunt-contrib-qunit" );
 grunt.loadNpmTasks( "grunt-contrib-csslint" );
+grunt.loadNpmTasks( "grunt-jscs-checker" );
 grunt.loadNpmTasks( "grunt-html" );
 grunt.loadNpmTasks( "grunt-compare-size" );
 grunt.loadNpmTasks( "grunt-git-authors" );
@@ -161,6 +162,13 @@ grunt.initConfig({
 			dest: "dist/jquery-ui.css"
 		}
 	},
+	jscs: {
+		// datepicker, sortable, resizable and draggable are getting rewritten, ignore until that's done
+		ui: [ "ui/jquery.ui.*.js", "!ui/jquery.ui.datepicker.js", "!ui/jquery.ui.sortable.js", "!ui/jquery.ui.resizable.js", "!ui/jquery.ui.draggable.js" ],
+		// TODO enable this once we have a tool that can help with fixing formatting of existing files
+		// tests: "tests/unit/**/*.js",
+		grunt: "Gruntfile.js"
+	},
 	uglify: minify,
 	htmllint: {
 		// ignore files that contain invalid html, used only for ajax content testing
@@ -197,7 +205,7 @@ grunt.initConfig({
 });
 
 grunt.registerTask( "default", [ "lint", "test" ] );
-grunt.registerTask( "lint", [ "asciilint", "jshint", "csslint", "htmllint" ] );
+grunt.registerTask( "lint", [ "asciilint", "jshint", "jscs", "csslint", "htmllint" ] );
 grunt.registerTask( "test", [ "qunit" ] );
 grunt.registerTask( "sizer", [ "concat:ui", "uglify:main", "compare_size:all" ] );
 grunt.registerTask( "sizer_all", [ "concat:ui", "uglify", "compare_size" ] );

package.json

@@ -63,6 +63,7 @@
 		"grunt-contrib-qunit": "0.2.0",
 		"grunt-contrib-csslint": "0.1.1",
 		"grunt-compare-size": "0.4.0-rc.3",
+		"grunt-jscs-checker": "0.2.0",
 		"grunt-html": "0.3.3",
 		"grunt-git-authors": "1.2.0",
 		"rimraf": "2.1.4",