refactor(indexOf) use Array.prototype.indexOf exclusively

Replace helper functions with the native ES5 method

Closes #8847

Author: realityking

src/.jshintrc

@@ -58,7 +58,6 @@
     "map": false,
     "size": false,
     "includes": false,
-    "indexOf": false,
     "arrayRemove": false,
     "isLeafNode": false,
     "copy": false,

src/Angular.js

@@ -53,7 +53,6 @@
   map: true,
   size: true,
   includes: true,
-  indexOf: true,
   arrayRemove: true,
   isLeafNode: true,
   copy: true,
@@ -651,20 +650,11 @@ function size(obj, ownPropsOnly) {
 
 
 function includes(array, obj) {
-  return indexOf(array, obj) != -1;
-}
-
-function indexOf(array, obj) {
-  if (array.indexOf) return array.indexOf(obj);
-
-  for (var i = 0; i < array.length; i++) {
-    if (obj === array[i]) return i;
-  }
-  return -1;
+  return Array.prototype.indexOf.call(array, obj) != -1;
 }
 
 function arrayRemove(array, value) {
-  var index = indexOf(array, value);
+  var index = array.indexOf(value);
   if (index >=0)
     array.splice(index, 1);
   return value;
@@ -769,7 +759,7 @@ function copy(source, destination, stackSource, stackDest) {
     stackDest = stackDest || [];
 
     if (isObject(source)) {
-      var index = indexOf(stackSource, source);
+      var index = stackSource.indexOf(source);
       if (index !== -1) return stackDest[index];
 
       stackSource.push(source);

src/ng/directive/form.js

@@ -191,7 +191,7 @@ function FormController(element, attrs, $scope, $animate) {
     var pendingChange, pending = form.$pending && form.$pending[validationToken];
 
     if (pending) {
-      pendingChange = indexOf(pending, control) >= 0;
+      pendingChange = pending.indexOf(control) >= 0;
       if (pendingChange) {
         arrayRemove(pending, control);
         pendingCount--;

src/ng/http.js

@@ -1008,7 +1008,7 @@ function $HttpProvider() {
 
 
       function removePendingReq() {
-        var idx = indexOf($http.pendingRequests, config);
+        var idx = $http.pendingRequests.indexOf(config);
         if (idx !== -1) $http.pendingRequests.splice(idx, 1);
       }
     }

src/ng/rootScope.js

@@ -1094,7 +1094,7 @@ function $RootScopeProvider(){
 
         var self = this;
         return function() {
-          namedListeners[indexOf(namedListeners, listener)] = null;
+          namedListeners[namedListeners.indexOf(listener)] = null;
           decrementListenerCount(self, 1, name);
         };
       },

src/ngScenario/.jshintrc

@@ -9,7 +9,6 @@
     "browserTrigger": false,
     "console": false,
     "alert": false,
-    "indexOf": false,
     "_jQuery": false,
     "angularInit": false,
     "formatException": false,

src/ngScenario/Scenario.js

@@ -112,7 +112,7 @@ angular.scenario.setUpAndRun = function(config) {
   }
 
   angular.forEach(angular.scenario.output, function(fn, name) {
-    if (!output.length || indexOf(output,name) != -1) {
+    if (!output.length || output.indexOf(name) != -1) {
       var context = body.append('<div></div>').find('div:last');
       context.attr('id', name);
       fn.call({}, context, $runner, objModel);

src/ngScenario/browserTrigger.js

@@ -3,17 +3,6 @@
 (function() {
   var msie = parseInt((/msie (\d+)/.exec(navigator.userAgent.toLowerCase()) || [])[1], 10);
 
-  function indexOf(array, obj) {
-    if (array.indexOf) return array.indexOf(obj);
-
-    for ( var i = 0; i < array.length; i++) {
-      if (obj === array[i]) return i;
-    }
-    return -1;
-  }
-
-
-
   /**
    * Triggers a browser event. Attempts to choose the right event if one is
    * not specified.
@@ -60,7 +49,7 @@
 
     keys = keys || [];
     function pressed(key) {
-      return indexOf(keys, key) !== -1;
+      return keys.indexOf(key) !== -1;
     }
 
     if (msie < 9) {

test/.jshintrc

@@ -56,7 +56,6 @@
     "map": false,
     "size": false,
     "includes": false,
-    "indexOf": false,
     "arrayRemove": false,
     "isLeafNode": false,
     "copy": false,

test/helpers/matchers.js

@@ -167,7 +167,7 @@ beforeEach(function() {
 
 
     toBeOneOf: function() {
-      return indexOf(arguments, this.actual) !== -1;
+      return Array.prototype.indexOf.call(arguments, this.actual) !== -1;
     },
 
     toHaveClass: function(clazz) {