Remove JSHint and JSCS and install ESLint.

.eslintrc.json

@@ -0,0 +1,34 @@
+{
+	"extends": "wikimedia",
+	"env": {
+		"browser": true,
+		"jquery": true
+	},
+	"globals": {
+		"AFCH": true,
+		"Hogan": false,
+		"importScript": false,
+		"mediaWiki": true,
+		"mw": true,
+		"OO": false
+	},
+	"rules": {
+		"camelcase": 0,
+		"eqeqeq": 0,
+		"no-console": 0,
+		"no-global-assign": 0,
+		"no-implicit-globals": 0,
+		"no-native-reassign": 0,
+		"no-new": 0,
+		"no-undef": 0,
+		"no-underscore-dangle": 0,
+		"no-unused-vars": 0,
+		"no-use-before-define": 0,
+		"no-useless-concat": 0,
+		"no-useless-escape": 0,
+		"one-var": 0,
+		"spaced-comment": 0,
+		"valid-jsdoc": 0,
+		"vars-on-top": 0
+	}
+}

.jscsrc

@@ -1,21 +0,0 @@
-{
-	"requireCurlyBraces": ["if", "else", "for", "while", "do"],
-	"requireSpaceAfterKeywords": ["if", "else", "for", "while", "do", "switch", "return", "function"],
-	"requireParenthesesAroundIIFE": true,
-	"requireSpacesInFunctionExpression": {
-		"beforeOpeningCurlyBrace": true
-	},
-	"requireMultipleVarDecl": true,
-	"disallowEmptyBlocks": true,
-	"requireSpacesInsideObjectBrackets": "all",
-	"disallowSpaceAfterObjectKeys": true,
-	"requireCommaBeforeLineBreak": true,
-	"requireSpacesInConditionalExpression": true,
-	"disallowMultipleLineBreaks": true,
-	"validateLineBreaks": "LF",
-	"validateQuoteMarks": "'",
-	"disallowMixedSpacesAndTabs": "smart",
-	"disallowTrailingWhitespace": true,
-	"requireLineFeedAtFileEnd": true,
-	"requireDotNotation": true
-}

.jshintignore

@@ -1 +0,0 @@
-node_modules

.jshintrc

@@ -1,19 +0,0 @@
-{
-	// Enforcing
-	"camelcase": true,
-	"eqeqeq": true,
-	"latedef": true,
-	"noarg": true,
-	"nonew": true,
-	"undef": true,
-	"unused": true,
-	"trailing": true,
-
-	// Environment
-	"browser": true,
-
-	"globals": {
-		"jQuery": false,
-		"mediaWiki": false
-	}
-}

Gruntfile.js

@@ -55,16 +55,12 @@ module.exports = function ( grunt ) {
 			build: {
 				files: {
 					'build/afch.css': [ 'build/**/*.css' ]
-		    	}
-		    }
+				}
+			}
 		},
 
-		jshint: {
-			src: [ 'src/**/*.js', 'contrib/**/*.js', '__tests__/**/*.js', ]
-		},
-
-		jscs: {
-			src: [ 'src/**/*.js', 'contrib/**/*.js', '__tests__/**/*.js' ]
+		eslint: {
+			target: [ 'src/**/*.js', 'contrib/**/*.js', '__tests__/**/*.js', 'Gruntfile.js' ]
 		},
 
 		exec: {
@@ -79,15 +75,14 @@ module.exports = function ( grunt ) {
 	grunt.loadNpmTasks( 'grunt-contrib-concat' );
 	grunt.loadNpmTasks( 'grunt-contrib-copy' );
 	grunt.loadNpmTasks( 'grunt-contrib-cssmin' );
-	grunt.loadNpmTasks( 'grunt-contrib-jshint' );
 	grunt.loadNpmTasks( 'grunt-contrib-less' );
+	grunt.loadNpmTasks( 'grunt-eslint' );
 	grunt.loadNpmTasks( 'grunt-exec' );
-	grunt.loadNpmTasks( 'grunt-jscs' );
 
 	grunt.registerTask(
 		'teststyle',
 		'Tests files for code style and code quality.',
-		[ 'jshint', 'jscs' ]
+		[ 'eslint' ]
 	);
 
 	grunt.registerTask(

package.json

@@ -17,16 +17,17 @@
   "dependencies": {
   },
   "devDependencies": {
+    "eslint": "^4.15.0",
+    "eslint-config-wikimedia": "^0.5.0",
     "grunt": "^1.0.1",
     "grunt-autoprefixer": "^3.0.4",
     "grunt-contrib-clean": "^1.1.0",
     "grunt-contrib-concat": "^1.0.1",
     "grunt-contrib-copy": "^1.0.0",
     "grunt-contrib-cssmin": "^2.2.1",
-    "grunt-contrib-jshint": "^1.1.0",
     "grunt-contrib-less": "^1.4.1",
+    "grunt-eslint": "^20.1.0",
     "grunt-exec": "^3.0.0",
-    "grunt-jscs": "^3.0.1",
     "jest-cli": "^12.1.1",
     "jquery": "^3.2.1"
   }