refactor: use isDefined and isUndefined consistently

src/Angular.js

@@ -977,7 +977,7 @@ function equals(o1, o2) {
         for (key in o2) {
           if (!(key in keySet) &&
               key.charAt(0) !== '$' &&
-              o2[key] !== undefined &&
+              isDefined(o2[key]) &&
               !isFunction(o2[key])) return false;
         }
         return true;

src/jqLite.js

@@ -450,7 +450,7 @@ function jqLiteInheritedData(element, name, value) {
 
   while (element) {
     for (var i = 0, ii = names.length; i < ii; i++) {
-      if ((value = jqLite.data(element, names[i])) !== undefined) return value;
+      if (isDefined(value = jqLite.data(element, names[i]))) return value;
     }
 
     // If dealing with a document fragment node with a host element, and no parent, use the host
@@ -694,7 +694,7 @@ forEach({
     // in a way that survives minification.
     // jqLiteEmpty takes no arguments but is a setter.
     if (fn !== jqLiteEmpty &&
-        (((fn.length == 2 && (fn !== jqLiteHasClass && fn !== jqLiteController)) ? arg1 : arg2) === undefined)) {
+        (isUndefined((fn.length == 2 && (fn !== jqLiteHasClass && fn !== jqLiteController)) ? arg1 : arg2))) {
       if (isObject(arg1)) {
 
         // we are a write, but the object properties are the key/values
@@ -715,7 +715,7 @@ forEach({
         // TODO: do we still need this?
         var value = fn.$dv;
         // Only if we have $dv do we iterate over all, otherwise it is just the first element.
-        var jj = (value === undefined) ? Math.min(nodeCount, 1) : nodeCount;
+        var jj = (isUndefined(value)) ? Math.min(nodeCount, 1) : nodeCount;
         for (var j = 0; j < jj; j++) {
           var nodeValue = fn(this[j], arg1, arg2);
           value = value ? value + nodeValue : nodeValue;

src/ng/cacheFactory.js

@@ -67,10 +67,10 @@
            $scope.keys = [];
            $scope.cache = $cacheFactory('cacheId');
            $scope.put = function(key, value) {
-             if ($scope.cache.get(key) === undefined) {
+             if (isUndefined($scope.cache.get(key))) {
                $scope.keys.push(key);
              }
-             $scope.cache.put(key, value === undefined ? null : value);
+             $scope.cache.put(key, isUndefined(value) ? null : value);
            };
          }]);
      </file>

src/ng/compile.js

@@ -1165,7 +1165,7 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
         }
 
         if (writeAttr !== false) {
-          if (value === null || value === undefined) {
+          if (value === null || isUndefined(value)) {
             this.$$element.removeAttr(attrName);
           } else {
             this.$$element.attr(attrName, value);
@@ -2131,7 +2131,7 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
             i = 0, ii = directives.length; i < ii; i++) {
           try {
             directive = directives[i];
-            if ((maxPriority === undefined || maxPriority > directive.priority) &&
+            if ((isUndefined(maxPriority) || maxPriority > directive.priority) &&
                  directive.restrict.indexOf(location) != -1) {
               if (startAttrName) {
                 directive = inherit(directive, {$$start: startAttrName, $$end: endAttrName});

src/ng/cookieReader.js

@@ -39,7 +39,7 @@ function $$CookieReader($document) {
           // the first value that is seen for a cookie is the most
           // specific one.  values for the same cookie name that
           // follow are for less specific paths.
-          if (lastCookies[name] === undefined) {
+          if (isUndefined(lastCookies[name])) {
             lastCookies[name] = safeDecodeURIComponent(cookie.substring(index + 1));
           }
         }

src/ng/directive/ngBind.js

@@ -60,7 +60,7 @@ var ngBindDirective = ['$compile', function($compile) {
         $compile.$$addBindingInfo(element, attr.ngBind);
         element = element[0];
         scope.$watch(attr.ngBind, function ngBindWatchAction(value) {
-          element.textContent = value === undefined ? '' : value;
+          element.textContent = isUndefined(value) ? '' : value;
         });
       };
     }
@@ -128,7 +128,7 @@ var ngBindTemplateDirective = ['$interpolate', '$compile', function($interpolate
         $compile.$$addBindingInfo(element, interpolateFn.expressions);
         element = element[0];
         attr.$observe('ngBindTemplate', function(value) {
-          element.textContent = value === undefined ? '' : value;
+          element.textContent = isUndefined(value) ? '' : value;
         });
       };
     }

src/ng/directive/ngModel.js

@@ -556,7 +556,7 @@ var NgModelController = ['$scope', '$exceptionHandler', '$attrs', '$element', '$
 
     function processParseErrors() {
       var errorKey = ctrl.$$parserName || 'parse';
-      if (parserValid === undefined) {
+      if (isUndefined(parserValid)) {
         setValidity(errorKey, null);
       } else {
         if (!parserValid) {
@@ -1242,7 +1242,7 @@ var ngModelOptionsDirective = function() {
       var that = this;
       this.$options = copy($scope.$eval($attrs.ngModelOptions));
       // Allow adding/overriding bound events
-      if (this.$options.updateOn !== undefined) {
+      if (isDefined(this.$options.updateOn)) {
         this.$options.updateOnDefault = false;
         // extract "default" pseudo-event from list of events that can trigger a model update
         this.$options.updateOn = trim(this.$options.updateOn.replace(DEFAULT_REGEXP, function() {
@@ -1272,7 +1272,7 @@ function addSetValidityMethod(context) {
   ctrl.$setValidity = setValidity;
 
   function setValidity(validationErrorKey, state, controller) {
-    if (state === undefined) {
+    if (isUndefined(state)) {
       createAndSet('$pending', validationErrorKey, controller);
     } else {
       unsetAndCleanup('$pending', validationErrorKey, controller);

src/ng/httpBackend.js

@@ -126,7 +126,7 @@ function createHttpBackend($browser, createXhr, $browserDefer, callbacks, rawDoc
 
     function completeRequest(callback, status, response, headersString, statusText) {
       // cancel timeout and subsequent timeout promise resolution
-      if (timeoutId !== undefined) {
+      if (isDefined(timeoutId)) {
         $browserDefer.cancel(timeoutId);
       }
       jsonpDone = xhr = null;

src/ng/location.js

@@ -141,14 +141,14 @@ function LocationHtml5Url(appBase, appBaseNoFile, basePrefix) {
     var appUrl, prevAppUrl;
     var rewrittenUrl;
 
-    if ((appUrl = beginsWith(appBase, url)) !== undefined) {
+    if (isDefined(appUrl = beginsWith(appBase, url))) {
       prevAppUrl = appUrl;
-      if ((appUrl = beginsWith(basePrefix, appUrl)) !== undefined) {
+      if (isDefined(appUrl = beginsWith(basePrefix, appUrl))) {
         rewrittenUrl = appBaseNoFile + (beginsWith('/', appUrl) || appUrl);
       } else {
         rewrittenUrl = appBase + prevAppUrl;
       }
-    } else if ((appUrl = beginsWith(appBaseNoFile, url)) !== undefined) {
+    } else if (isDefined(appUrl = beginsWith(appBaseNoFile, url))) {
       rewrittenUrl = appBaseNoFile + appUrl;
     } else if (appBaseNoFile == url + '/') {
       rewrittenUrl = appBaseNoFile;

src/ng/sce.js

@@ -294,7 +294,7 @@ function $SceDelegateProvider() {
             'Attempted to trust a value in invalid context. Context: {0}; Value: {1}',
             type, trustedValue);
       }
-      if (trustedValue === null || trustedValue === undefined || trustedValue === '') {
+      if (trustedValue === null || isUndefined(trustedValue) || trustedValue === '') {
         return trustedValue;
       }
       // All the current contexts in SCE_CONTEXTS happen to be strings.  In order to avoid trusting
@@ -349,7 +349,7 @@ function $SceDelegateProvider() {
      *     `$sceDelegate.trustAs`} if valid in this context.  Otherwise, throws an exception.
      */
     function getTrusted(type, maybeTrusted) {
-      if (maybeTrusted === null || maybeTrusted === undefined || maybeTrusted === '') {
+      if (maybeTrusted === null || isUndefined(maybeTrusted) || maybeTrusted === '') {
         return maybeTrusted;
       }
       var constructor = (byType.hasOwnProperty(type) ? byType[type] : null);

src/ngAnimate/shared.js

@@ -36,7 +36,7 @@ var CSS_PREFIX = '', TRANSITION_PROP, TRANSITIONEND_EVENT, ANIMATION_PROP, ANIMA
 // Also, the only modern browser that uses vendor prefixes for transitions/keyframes is webkit
 // therefore there is no reason to test anymore for other vendor prefixes:
 // http://caniuse.com/#search=transition
-if (window.ontransitionend === undefined && window.onwebkittransitionend !== undefined) {
+if (isUndefined(window.ontransitionend) && isDefined(window.onwebkittransitionend)) {
   CSS_PREFIX = '-webkit-';
   TRANSITION_PROP = 'WebkitTransition';
   TRANSITIONEND_EVENT = 'webkitTransitionEnd transitionend';
@@ -45,7 +45,7 @@ if (window.ontransitionend === undefined && window.onwebkittransitionend !== und
   TRANSITIONEND_EVENT = 'transitionend';
 }
 
-if (window.onanimationend === undefined && window.onwebkitanimationend !== undefined) {
+if (isUndefined(window.onanimationend) && isDefined(window.onwebkitanimationend)) {
   CSS_PREFIX = '-webkit-';
   ANIMATION_PROP = 'WebkitAnimation';
   ANIMATIONEND_EVENT = 'webkitAnimationEnd animationend';

src/ngCookies/cookieWriter.js

@@ -20,7 +20,7 @@ function $$CookieWriter($document, $log, $browser) {
     options = options || {};
     expires = options.expires;
     path = angular.isDefined(options.path) ? options.path : cookiePath;
-    if (value === undefined) {
+    if (angular.isUndefined(value)) {
       expires = 'Thu, 01 Jan 1970 00:00:00 GMT';
       value = '';
     }

src/ngMock/angular-mocks.js

@@ -87,7 +87,7 @@ angular.mock.$Browser = function() {
       if (fn.id === deferId) fnIndex = index;
     });
 
-    if (fnIndex !== undefined) {
+    if (angular.isDefined(fnIndex)) {
       self.deferredFns.splice(fnIndex, 1);
       return true;
     }
@@ -462,7 +462,7 @@ angular.mock.$IntervalProvider = function() {
             if (fn.id === promise.$$intervalId) fnIndex = index;
           });
 
-          if (fnIndex !== undefined) {
+          if (angular.isDefined(fnIndex)) {
             repeatFns.splice(fnIndex, 1);
           }
         }
@@ -504,7 +504,7 @@ angular.mock.$IntervalProvider = function() {
         if (fn.id === promise.$$intervalId) fnIndex = index;
       });
 
-      if (fnIndex !== undefined) {
+      if (angular.isDefined(fnIndex)) {
         repeatFns[fnIndex].deferred.reject('canceled');
         repeatFns.splice(fnIndex, 1);
         return true;

src/ngResource/resource.js

@@ -17,7 +17,7 @@ function lookupDottedPath(obj, path) {
     throw $resourceMinErr('badmember', 'Dotted member path "@{0}" is invalid.', path);
   }
   var keys = path.split('.');
-  for (var i = 0, ii = keys.length; i < ii && obj !== undefined; i++) {
+  for (var i = 0, ii = keys.length; i < ii && angular.isDefined(obj); i++) {
     var key = keys[i];
     obj = (obj !== null) ? obj[key] : undefined;
   }

src/ngScenario/Scenario.js

@@ -293,7 +293,7 @@ _jQuery.fn.bindings = function(windowJquery, bindExp) {
   }
 
   function push(value) {
-    if (value === undefined) {
+    if (angular.isUndefined(value)) {
       value = '';
     } else if (typeof value !== 'string') {
       value = angular.toJson(value);

test/ng/httpSpec.js

@@ -764,8 +764,8 @@ describe('$http', function() {
         $httpBackend.expect('POST', '/url', 'messageBody', function(headers) {
           return headers['accept'] == 'Rewritten' &&
                  headers['content-type'] == 'Content-Type Rewritten' &&
-                 headers['Accept'] === undefined &&
-                 headers['Content-Type'] === undefined;
+                 isUndefined(headers['Accept']) &&
+                 isUndefined(headers['Content-Type']);
         }).respond('');
 
         $http({url: '/url', method: 'POST', data: 'messageBody', headers: {
@@ -779,7 +779,7 @@ describe('$http', function() {
         mockedCookies['XSRF-TOKEN'] =  'secret';
         $browser.url('http://host.com/base');
         $httpBackend.expect('GET', 'http://www.test.com/url', undefined, function(headers) {
-          return headers['X-XSRF-TOKEN'] === undefined;
+          return isUndefined(headers['X-XSRF-TOKEN']);
         }).respond('');
 
         $http({url: 'http://www.test.com/url', method: 'GET', headers: {}});

test/ng/intervalSpec.js

@@ -29,7 +29,7 @@ describe('$interval', function() {
           if (fn.id === id) fnIndex = index;
         });
 
-        if (fnIndex !== undefined) {
+        if (isDefined(fnIndex)) {
           repeatFns.splice(fnIndex, 1);
           return true;
         }

test/ng/qSpec.js

@@ -51,7 +51,7 @@ describe('q', function() {
       log.push(logPrefix + '->throw(' +  _argToString(returnVal) + ')');
       throw returnVal;
     } else {
-      if (returnVal === undefined) {
+      if (isUndefined(returnVal)) {
         log.push(logPrefix);
       } else {
         log.push(logPrefix + '->' +  _argToString(returnVal));

test/ng/sceSpecs.js

@@ -282,10 +282,10 @@ describe('SCE', function() {
     function runTest(cfg, testFn) {
       return function() {
         module(function($sceDelegateProvider) {
-          if (cfg.whiteList !== undefined) {
+          if (isDefined(cfg.whiteList)) {
             $sceDelegateProvider.resourceUrlWhitelist(cfg.whiteList);
           }
-          if (cfg.blackList !== undefined) {
+          if (isDefined(cfg.blackList)) {
             $sceDelegateProvider.resourceUrlBlacklist(cfg.blackList);
           }
         });

test/ngCookies/cookieWriterSpec.js

@@ -138,8 +138,8 @@ describe('cookie options', function() {
               .reduce(function(prev, value) {
                 var pair = value.split('=', 2);
                 if (pair[0] === key) {
-                  if (prev === undefined) {
-                    return pair[1] === undefined ? true : pair[1];
+                  if (isUndefined(prev)) {
+                    return isUndefined(pair[1]) ? true : pair[1];
                   } else {
                     throw 'duplicate key in cookie string';
                   }

test/ngScenario/matchersSpec.js

@@ -6,7 +6,7 @@ describe('angular.scenario.matchers', function() {
   function expectMatcher(value, test) {
     delete matchers.error;
     delete matchers.future.value;
-    if (value !== undefined) {
+    if (isDefined(value)) {
       matchers.future.value = value;
     }
     test();