build: Replace jscs+jshint with eslint

Change-Id: I7f114267fbb4efd62a9162758445cff4fb3c0973

.eslintrc.json

@@ -0,0 +1,16 @@
+{
+	"extends": "wikimedia",
+	"env": {
+		"browser": true,
+		"jquery": true,
+		"qunit": true
+	},
+	"globals": {
+		"mediaWiki": false,
+		"OO": false
+	},
+	"rules": {
+		"dot-notation": 0,
+		"wrap-iife": 0
+	}
+}

.jsbeautifyrc

@@ -1,17 +0,0 @@
-{
-    "preserve_newlines": true,
-    "jslint_happy": true,
-    "keep_array_indentation": true,
-    "space_before_conditional": true,
-    "max_preserve_newlines": 10,
-    "brace_style": "collapse",
-    "keep_function_indentation": false,
-    "break_chained_methods": false,
-    "eval_code": false,
-    "unescape_strings": false,
-    "wrap_line_length": 0,
-    "space_in_paren": true,
-    "git_happy": true,
-    "indent_with_tabs": true,
-    "end_with_newline": true
-}

.jscsrc

@@ -1,21 +0,0 @@
-{
-	"preset": "wikimedia",
-
-	"jsDoc": {
-		"checkAnnotations": {
-			"preset": "jsduck5",
-			"extra": {
-				"this": true,
-				"source": true,
-				"see": true
-			}
-		},
-		"checkTypes": "strictNativeCase",
-		"checkParamNames": true,
-		"checkRedundantAccess": true,
-		"checkRedundantReturns": true,
-		"requireNewlineAfterDescription": true,
-		"requireParamTypes": true,
-		"requireReturnTypes": true
-	}
-}

.jshintignore

@@ -1,5 +0,0 @@
-# upstream libs
-lib/*
-# Generated file that contains JSON. Would fail "Strings must use singlequote."
-resources/js/ext.uls.webfonts.repository.js
-vendor/*

.jshintrc

@@ -1,26 +0,0 @@
-{
-	// Enforcing
-	"bitwise": true,
-	"eqeqeq": true,
-	"freeze": true,
-	"latedef": "nofunc",
-	"futurehostile": true,
-	"noarg": true,
-	"nonew": true,
-	"undef": true,
-	"unused": true,
-
-	"strict": false,
-
-	// Relaxing
-
-	// Environment
-	"browser": true,
-	"jquery": true,
-
-	"globals": {
-		"mediaWiki": false,
-		"OO": false,
-		"QUnit": false
-	}
-}

Gruntfile.js

@@ -1,19 +1,21 @@
-/*jshint node:true */
+/* eslint-env node */
 module.exports = function ( grunt ) {
 	'use strict';
 
 	grunt.loadNpmTasks( 'grunt-banana-checker' );
-	grunt.loadNpmTasks( 'grunt-contrib-jshint' );
+	grunt.loadNpmTasks( 'grunt-eslint' );
-	grunt.loadNpmTasks( 'grunt-jscs' );
 	grunt.loadNpmTasks( 'grunt-jsonlint' );
 	grunt.loadNpmTasks( 'grunt-stylelint' );
 
 	grunt.initConfig( {
-		jshint: {
+		eslint: {
+			fix: {
 				options: {
-				jshintrc: true
+					fix: true
 				},
-			all: [
+				src: '<%= eslint.main %>'
+			},
+			main: [
 				'**/*.js',
 				'!lib/**',
 				'!node_modules/**',
@@ -21,9 +23,6 @@ module.exports = function ( grunt ) {
 				'!resources/js/ext.uls.webfonts.repository.js'
 			]
 		},
-		jscs: {
-			src: '<%= jshint.all %>'
-		},
 		stylelint: {
 			options: {
 				syntax: 'less'
@@ -48,6 +47,6 @@ module.exports = function ( grunt ) {
 		}
 	} );
 
-	grunt.registerTask( 'test', [ 'jshint', 'jscs', 'stylelint', 'jsonlint', 'banana' ] );
+	grunt.registerTask( 'test', [ 'eslint:main', 'stylelint', 'jsonlint', 'banana' ] );
 	grunt.registerTask( 'default', 'test' );
 };

package.json

@@ -4,11 +4,11 @@
     "test": "grunt test"
   },
   "devDependencies": {
+    "eslint-config-wikimedia": "0.2.0",
     "grunt": "1.0.1",
     "grunt-banana-checker": "0.5.0",
-    "grunt-contrib-jshint": "1.0.0",
+    "grunt-eslint": "19.0.0",
-    "grunt-jscs": "2.8.0",
+    "grunt-jsonlint": "1.1.0",
-    "grunt-jsonlint": "1.0.7",
     "grunt-stylelint": "0.6.0",
     "stylelint-config-wikimedia": "0.3.0"
   }

resources/js/ext.uls.common.js

@@ -132,9 +132,7 @@
 	};
 
 	mw.uls.getCountryCode = function () {
-		// jscs:disable requireCamelCaseOrUpperCaseIdentifiers
 		return window.Geo && ( window.Geo.country || window.Geo.country_code );
-		// jscs:enable requireCamelCaseOrUpperCaseIdentifiers
 	};
 
 	mw.uls.getAcceptLanguageList = function () {

resources/js/ext.uls.compactlinks.js

@@ -17,6 +17,8 @@
  * @licence MIT License
  */
 
+/* eslint-disable no-use-before-define */
+
 ( function ( $, mw ) {
 	'use strict';
 
@@ -51,6 +53,9 @@
 
 	/**
 	 * @class
+	 * @constructor
+	 * @param {string|jQuery} interlanguageList Selector for interlanguage list
+	 * @param {Object} options
 	 */
 	function CompactInterlanguageList( interlanguageList, options ) {
 		this.$interlanguageList = $( interlanguageList );
@@ -289,7 +294,8 @@
 	 * Not all previous languages will be present in interlanguage links,
 	 * so we are filtering them.
 	 *
-	 * @return {Array} List of language codes supported by the article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	function filterByPreviousLanguages( languages ) {
 		var previousLanguages = mw.uls.getPreviousLanguages();
@@ -302,7 +308,8 @@
 	/**
 	 * Filter the language list by site picks.
 	 *
-	 * @return {Array} List of language codes supported by the article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	function filterBySitePicks( languages ) {
 		var picks = mw.config.get( 'wgULSCompactLinksPrepend' ) || [];
@@ -316,7 +323,8 @@
 	 * Filter the language list by common languages.
 	 * Common languages are the most probable languages predicted by ULS.
 	 *
-	 * @return {Array} List of language codes supported by the article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	function filterByCommonLanguages( languages ) {
 		var commonLanguages = mw.uls.getFrequentLanguageList();
@@ -330,12 +338,15 @@
 	 * Filter the language list by globally common languages, i.e.
 	 * this list is not user specific.
 	 *
-	 * @return {Array} List of language codes supported by the article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	function getExtraCommonLanguages( languages ) {
-		var commonLanguages = [ 'zh', 'en', 'hi', 'ur', 'es', 'ar', 'ru', 'id', 'ms', 'pt',
+		var commonLanguages = [
+			'zh', 'en', 'hi', 'ur', 'es', 'ar', 'ru', 'id', 'ms', 'pt',
 			'fr', 'de', 'bn', 'ja', 'pnb', 'pa', 'jv', 'te', 'ta', 'ko', 'mr', 'tr', 'vi',
-				'it', 'fa', 'sv', 'nl', 'pl' ];
+			'it', 'fa', 'sv', 'nl', 'pl'
+		];
 
 		return $.grep( commonLanguages, function ( language ) {
 			return $.inArray( language, languages ) >= 0;
@@ -346,7 +357,8 @@
 	 * Filter the language list by Translate's assistant languages.
 	 * Where available, they're languages deemed useful by the user.
 	 *
-	 * @return {Array} List of those language codes which are supported by article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	function filterByAssistantLanguages( languages ) {
 		var assistantLanguages = mw.user.options.get( 'translate-editlangs' );
@@ -369,7 +381,8 @@
 	 * The reader doesn't necessarily know this language, but it
 	 * appears relevant to the page.
 	 *
-	 * @return {Array} List of language codes supported by the article
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of language codes supported by the article
 	 */
 	CompactInterlanguageList.prototype.filterByLangsInText = function ( languages ) {
 		var languagesInText = [];
@@ -440,7 +453,8 @@
 	/**
 	 * Get common languages - the most probable languages predicted by ULS.
 	 *
-	 * @param {Array} languages Array of all languages.
+	 * @param {string[]} languages Language codes
+	 * @return {string[]} List of all common language codes
 	 */
 	CompactInterlanguageList.prototype.getCommonLanguages = function ( languages ) {
 		if ( this.commonInterlanguageList === null ) {

resources/js/ext.uls.displaysettings.js

@@ -625,6 +625,8 @@
 
 		/**
 		 * Callback for save preferences
+		 *
+		 * @param {boolean} success
 		 */
 		onSave: function ( success ) {
 			if ( success ) {

resources/js/ext.uls.inputsettings.js

@@ -498,6 +498,8 @@
 
 		/**
 		 * Callback for save preferences
+		 *
+		 * @param {boolean} success
 		 */
 		onSave: function ( success ) {
 			if ( success ) {

resources/js/ext.uls.interface.js

@@ -194,6 +194,9 @@
 	/**
 	 * The tooltip to be shown when language changed using ULS.
 	 * It also allows to undo the language selection.
+	 *
+	 * @param {string} previousLang
+	 * @param {string} previousAutonym
 	 */
 	function showUndoTooltip( previousLang, previousAutonym ) {
 		var $ulsTrigger, ulsPopup,

resources/js/ext.uls.preferences.js

@@ -26,6 +26,8 @@
 	/**
 	 * Wrapper for localStorage, falls back to cookie
 	 * when localStorage not supported by browser.
+	 *
+	 * @return {Object}
 	 */
 	function preferenceStore() {
 
@@ -110,6 +112,7 @@
 		 * Get a preference value for the given preference name
 		 *
 		 * @param {string} key
+		 * @return {Mixed}
 		 */
 		get: function ( key ) {
 			return this.preferences[ key ];

resources/js/ext.uls.webfonts.js

@@ -139,7 +139,8 @@
 			 *
 			 * @param {Object} repository
 			 * @param {string} language
-			 * @param {Array} classes
+			 * @param {string[]} classes
+			 * @return {string|null}
 			 */
 			fontSelector: function ( repository, language, classes ) {
 				var font, autonym, defaultFont;