Stricter JSHint rules

.jshintrc

@@ -1,7 +1,7 @@
 {
     "camelcase": true,
     "curly": true,
-    "eqnull": true,
+    "eqeqeq": true,
     "forin": true,
     "immed": true,
     "indent": 4,
@@ -11,8 +11,9 @@
     "noempty": true,
     "nonbsp": true,
     "quotmark": "double",
-    "unused": true,
+    "strict": true,
     "undef": true,
+    "unused": true,
     "globals": {
         "CSSLint": true,
         "YUITest": true

Gruntfile.js

@@ -1,5 +1,7 @@
 /* jshint camelcase:false, evil:true, node:true */
 
+"use strict";
+
 module.exports = function(grunt) {
 
     // Project configuration.

demos/CSSLintDemo.htm

@@ -78,14 +78,15 @@ <h1>CSSLint Demo</h1>
     <div id="output"></div>
     <script>
         (function() {
+            "use strict";
 
             document.body.onclick = function(event) {
                 event = event || window.event;
                 var target = event.target || event.srcElement,
                     results, messages, i, len;
 
 
-                if (target.id == "lint-btn") {
+                if (target.id === "lint-btn") {
                     document.getElementById("output").innerHTML = "";
                     results = CSSLint.verify(document.getElementById("input").value);
                     messages = results.messages;

src/cli/common.js

@@ -6,6 +6,7 @@
 /* exported cli */
 
 function cli(api){
+    "use strict";
 
     var globalOptions = {
         "help"        : { "format" : "",                       "description" : "Displays this information."},

src/cli/node.js

@@ -14,14 +14,17 @@ cli({
     args: process.argv.slice(2),
 
     print: function(message){
+        "use strict";
         fs.writeSync(1, message + "\n");
     },
 
     quit: function(code){
+        "use strict";
         process.exit(code || 0);
     },
 
     isDirectory: function(name){
+        "use strict";
         try {
             return fs.statSync(name).isDirectory();
         } catch (ex) {
@@ -30,6 +33,7 @@ cli({
     },
 
     getFiles: function(dir){
+        "use strict";
         var files = [];
 
         try {
@@ -44,7 +48,7 @@ cli({
                 var path = stack.concat([file]).join("/"),
                     stat = fs.statSync(path);
 
-                if (file[0] == ".") {
+                if (file[0] === ".") {
                     return;
                 } else if (stat.isFile() && /\.css$/.test(file)){
                     files.push(path);
@@ -61,14 +65,17 @@ cli({
     },
 
     getWorkingDirectory: function() {
+        "use strict";
         return process.cwd();
     },
 
     getFullPath: function(filename){
+        "use strict";
         return path.resolve(process.cwd(), filename);
     },
 
     readFile: function(filename){
+        "use strict";
         try {
             return fs.readFileSync(filename, "utf-8");
         } catch (ex) {

src/cli/rhino.js

@@ -8,16 +8,19 @@
 importPackage(java.io);
 
 cli({
+
     args: Array.prototype.concat.call(arguments),
     print: print,
     quit: quit,
 
     isDirectory: function(name){
+        "use strict";
         var dir = new File(name);
         return dir.isDirectory();
     },
 
     getFiles: function(dir){
+        "use strict";
         var files = [];
 
         function traverse(dir) {
@@ -37,14 +40,17 @@ cli({
     },
 
     getWorkingDirectory: function() {
+        "use strict";
         return (new File(".")).getCanonicalPath();
     },
 
     getFullPath: function(filename){
+        "use strict";
         return (new File(filename)).getCanonicalPath();
     },
 
     readFile: function(filename) {
+        "use strict";
         try {
             return readFile(filename);
         } catch (ex) {

src/cli/wsh.js

@@ -8,6 +8,8 @@
 /* global cli */
 
 var wshapi = (function(){
+    "use strict";
+
     var fso = new ActiveXObject("Scripting.FileSystemObject");
     var shell = WScript.CreateObject("WScript.Shell");
     var finalArgs = [], i, args = WScript.Arguments;
@@ -22,7 +24,7 @@ var wshapi = (function(){
 
     if (typeof Array.prototype.filter !== "function") {
         Array.prototype.filter = function(fn /*, thisp*/) {
-            if (typeof fn != "function") {
+            if (typeof fn !== "function") {
                 throw new Error("not a function");
             }
             var res = [], val, thisp = finalArgs[1];
@@ -41,7 +43,6 @@ var wshapi = (function(){
 
     if (!Array.prototype.indexOf) {
         Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) {
-            "use strict";
             if (this === void 0 || this === null) {
                 throw new Error("unknown instance");
             }

src/core/CSSLint.js

@@ -9,6 +9,7 @@
 /* exported CSSLint */
 
 var CSSLint = (function(){
+    "use strict";
 
     var rules           = [],
         formatters      = [],

src/core/Reporter.js

@@ -8,6 +8,7 @@
  *      they are errors or warnings.
  */
 function Reporter(lines, ruleset){
+    "use strict";
 
     /**
      * List of messages being reported.
@@ -54,6 +55,7 @@ Reporter.prototype = {
      * @method error
      */
     error: function(message, line, col, rule){
+        "use strict";
         this.messages.push({
             type    : "error",
             line    : line,
@@ -74,6 +76,7 @@ Reporter.prototype = {
      * @deprecated Use report instead.
      */
     warn: function(message, line, col, rule){
+        "use strict";
         this.report(message, line, col, rule);
     },
 
@@ -86,8 +89,9 @@ Reporter.prototype = {
      * @method report
      */
     report: function(message, line, col, rule){
+        "use strict";
         this.messages.push({
-            type    : this.ruleset[rule.id] == 2 ? "error" : "warning",
+            type    : this.ruleset[rule.id] === 2 ? "error" : "warning",
             line    : line,
             col     : col,
             message : message,
@@ -105,6 +109,7 @@ Reporter.prototype = {
      * @method info
      */
     info: function(message, line, col, rule){
+        "use strict";
         this.messages.push({
             type    : "info",
             line    : line,
@@ -122,6 +127,7 @@ Reporter.prototype = {
      * @method rollupError
      */
     rollupError: function(message, rule){
+        "use strict";
         this.messages.push({
             type    : "error",
             rollup  : true,
@@ -137,6 +143,7 @@ Reporter.prototype = {
      * @method rollupWarn
      */
     rollupWarn: function(message, rule){
+        "use strict";
         this.messages.push({
             type    : "warning",
             rollup  : true,
@@ -152,6 +159,7 @@ Reporter.prototype = {
      * @method stat
      */
     stat: function(name, value){
+        "use strict";
         this.stats[name] = value;
     }
 };

src/core/Util.js

@@ -11,6 +11,7 @@ CSSLint.Util = {
      * @return {Object} The receiver
      */
     mix: function(receiver, supplier){
+        "use strict";
         var prop;
 
         for (prop in supplier){
@@ -29,6 +30,7 @@ CSSLint.Util = {
      * @return {int} The index of the value if found, -1 if not.
      */
     indexOf: function(values, value){
+        "use strict";
         if (values.indexOf){
             return values.indexOf(value);
         } else {
@@ -48,6 +50,7 @@ CSSLint.Util = {
      * @return {void}
      */
     forEach: function(values, func) {
+        "use strict";
         if (values.forEach){
             return values.forEach(func);
         } else {

src/formatters/checkstyle-xml.js

@@ -1,4 +1,5 @@
 (function() {
+    "use strict";
 
     /**
      * Replace special characters before write to output.

src/formatters/compact.js

@@ -8,6 +8,7 @@ CSSLint.addFormatter({
      * @return {String} to prepend before all results
      */
     startFormat: function() {
+        "use strict";
         return "";
     },
 
@@ -16,6 +17,7 @@ CSSLint.addFormatter({
      * @return {String} to append after all results
      */
     endFormat: function() {
+        "use strict";
         return "";
     },
 
@@ -27,6 +29,7 @@ CSSLint.addFormatter({
      * @return {String} output for results
      */
     formatResults: function(results, filename, options) {
+        "use strict";
         var messages = results.messages,
             output = "";
         options = options || {};
@@ -41,7 +44,7 @@ CSSLint.addFormatter({
         };
 
         if (messages.length === 0) {
-            return options.quiet ? "" : filename + ": Lint Free!";
+              return options.quiet ? "" : filename + ": Lint Free!";
         }
 
         CSSLint.Util.forEach(messages, function(message) {

src/formatters/csslint-xml.js

@@ -8,6 +8,7 @@ CSSLint.addFormatter({
      * @return {String} to prepend before all results
      */
     startFormat: function(){
+        "use strict";
         return "<?xml version=\"1.0\" encoding=\"utf-8\"?><csslint>";
     },
 
@@ -16,6 +17,7 @@ CSSLint.addFormatter({
      * @return {String} to append after all results
      */
     endFormat: function(){
+        "use strict";
         return "</csslint>";
     },
 
@@ -27,6 +29,7 @@ CSSLint.addFormatter({
      * @return {String} output for results
      */
     formatResults: function(results, filename/*, options*/) {
+        "use strict";
         var messages = results.messages,
             output = [];
 

src/formatters/junit-xml.js

@@ -8,6 +8,7 @@ CSSLint.addFormatter({
      * @return {String} to prepend before all results
      */
     startFormat: function(){
+        "use strict";
         return "<?xml version=\"1.0\" encoding=\"utf-8\"?><testsuites>";
     },
 
@@ -16,6 +17,7 @@ CSSLint.addFormatter({
      * @return {String} to append after all results
      */
     endFormat: function() {
+        "use strict";
         return "</testsuites>";
     },
 
@@ -27,6 +29,7 @@ CSSLint.addFormatter({
      * @return {String} output for results
      */
     formatResults: function(results, filename/*, options*/) {
+        "use strict";
 
         var messages = results.messages,
             output = [],

src/formatters/lint-xml.js

@@ -8,6 +8,7 @@ CSSLint.addFormatter({
      * @return {String} to prepend before all results
      */
     startFormat: function(){
+        "use strict";
         return "<?xml version=\"1.0\" encoding=\"utf-8\"?><lint>";
     },
 
@@ -16,6 +17,7 @@ CSSLint.addFormatter({
      * @return {String} to append after all results
      */
     endFormat: function(){
+        "use strict";
         return "</lint>";
     },
 
@@ -27,6 +29,7 @@ CSSLint.addFormatter({
      * @return {String} output for results
      */
     formatResults: function(results, filename/*, options*/) {
+        "use strict";
         var messages = results.messages,
             output = [];