Fixed: Make sure we handle undefined when testing for nil values (#2862)

2026-08-25 04:57:03 +00:00 · 2020-01-31 13:43:58 +01:00
parent 8daa53dd3e
commit 7dc77ed609
95 changed files with 280 additions and 280 deletions
@@ -271,7 +271,7 @@
    if (_disableSetContent)
        return;
-    if (value === nil)
+    if (value == nil)
        value = [];
    if (![value isKindOfClass:[CPArray class]])
@@ -754,7 +754,7 @@
        _filterPredicate = nil;
        [self _rearrangeObjects];
    }
-    else if (_filterPredicate === nil || [_filterPredicate evaluateWithObject:object])
+    else if (_filterPredicate == nil || [_filterPredicate evaluateWithObject:object])
    {
        // Insert directly into the array.
        var pos = [_arrangedObjects insertObject:object inArraySortedByDescriptors:_sortDescriptors];
@@ -767,7 +767,7 @@
            [_selectionIndexes shiftIndexesStartingAtIndex:pos by:1];
    }
    /*
-    else if (_filterPredicate !== nil)
+    else if (_filterPredicate != nil)
    ...
    // Implies _filterPredicate && ![_filterPredicate evaluateWithObject:object], so the new object does
    // not appear in arrangedObjects and we do not have to update at all.
@@ -867,7 +867,7 @@
    _disableSetContent = NO;
-    if (_filterPredicate === nil || [_filterPredicate evaluateWithObject:object])
+    if (_filterPredicate == nil || [_filterPredicate evaluateWithObject:object])
    {
        // selectionIndexes change notification will be fired as a result of the
        // content change. Don't fire manually.
@@ -807,7 +807,7 @@ CPButtonImageOffset   = 3.0;
 {
    var selfWindow = [self window];
-    if (selfWindow === aWindow || aWindow === nil)
+    if (selfWindow === aWindow || aWindow == nil)
        return;
    if ([selfWindow defaultButton] === self)
@@ -739,7 +739,7 @@ var HORIZONTAL_MARGIN = 2;
 */
 - (void)setMinItemSize:(CGSize)aSize
 {
-    if (aSize === nil || aSize === undefined)
+    if (aSize == nil)
        [CPException raise:CPInvalidArgumentException reason:"Invalid value provided for minimum size"];
    if (CGSizeEqualToSize(_minItemSize, aSize))
@@ -564,7 +564,7 @@ var CPComboBoxTextSubview = @"text",
    var selectedStringValue = [_listDelegate selectedStringValue];
-    if (selectedStringValue === nil)
+    if (selectedStringValue == nil)
        return NO;
    else
        _selectedStringValue = selectedStringValue;
@@ -622,15 +622,15 @@ var CPControlBlackColor = [CPColor blackColor];
 */
 - (CPString)stringValue
 {
-    if (_formatter && _value !== undefined)
+    if (_formatter && _value != nil)
    {
        var formattedValue = [self hasThemeState:CPThemeStateEditing] ? [_formatter editingStringForObjectValue:_value] : [_formatter stringForObjectValue:_value];
-        if (formattedValue !== nil && formattedValue !== undefined)
+        if (formattedValue != nil)
            return formattedValue;
    }
-    return (_value === undefined || _value === nil) ? @"" : String(_value);
+    return _value == nil ? @"" : String(_value);
 }
 /*!
@@ -639,7 +639,7 @@ var CPControlBlackColor = [CPColor blackColor];
 - (void)setStringValue:(CPString)aString
 {
    // Cocoa raises an invalid parameter assertion and returns if you pass nil.
-    if (aString === nil || aString === undefined)
+    if (aString == nil)
    {
        CPLog.warn("nil or undefined sent to CPControl -setStringValue");
        return;
@@ -1137,18 +1137,18 @@ var CPControlActionKey                  = @"CPControlActionKey",
    var objectValue = [self objectValue];
-    if (objectValue !== nil)
+    if (objectValue != nil)
        [aCoder encodeObject:objectValue forKey:CPControlValueKey];
-    if (_target !== nil)
+    if (_target != nil)
        [aCoder encodeConditionalObject:_target forKey:CPControlTargetKey];
-    if (_action !== nil)
+    if (_action != nil)
        [aCoder encodeObject:_action forKey:CPControlActionKey];
    [aCoder encodeInt:_sendActionOn forKey:CPControlSendActionOnKey];
-    if (_formatter !== nil)
+    if (_formatter != nil)
        [aCoder encodeObject:_formatter forKey:CPControlFormatterKey];
    [aCoder encodeInt:_controlSize forKey:CPControlControlSizeKey];
@@ -69,7 +69,7 @@
    aNewObject._controller = self;
    aNewObject._key = aKey;
-    if (aValue !== nil)
+    if (aValue != nil)
        [aNewObject setValue:aValue];
    return aNewObject;
@@ -98,7 +98,7 @@
    var iter = [[CPSet setWithArray:allKeys] objectEnumerator],
        obj;
-    while ((obj = [iter nextObject]) !== nil)
+    while ((obj = [iter nextObject]) != nil)
        if (![_excludedKeys containsObject:obj])
            [array addObject:[self _newObjectWithKey:obj value:nil]];
@@ -297,7 +297,7 @@ var CPSharedDocumentController = nil;
    var iter = [_documents objectEnumerator],
        obj;
-    while ((obj = [iter nextObject]) !== nil)
+    while ((obj = [iter nextObject]) != nil)
    {
        if ([obj isDocumentEdited])
            return YES;
@@ -608,7 +608,7 @@ var _CPEventPeriodicEventPeriod         = 0,
 */
 + (void)stopPeriodicEvents
 {
-    if (_CPEventPeriodicEventTimer === nil)
+    if (_CPEventPeriodicEventTimer == nil)
        return;
    window.clearTimeout(_CPEventPeriodicEventTimer);
@@ -145,7 +145,7 @@ var IEFlashCLSID = "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000";
        var enumerator = [_params keyEnumerator],
            key;
-        while (_DOMObjectElement && (key = [enumerator nextObject]) !== nil)
+        while (_DOMObjectElement && (key = [enumerator nextObject]) != nil)
        {
            var param = document.createElement(@"param");
            param.name = key;
@@ -177,7 +177,7 @@ var IEFlashCLSID = "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000";
        paramEnumerator = [_params keyEnumerator],
        key;
-    while ((key = [paramEnumerator nextObject]) !== nil)
+    while ((key = [paramEnumerator nextObject]) != nil)
        paramString = [paramString stringByAppendingFormat:@"<param name='%@' value='%@' />", key, [_params objectForKey:key]];
    _DOMObjectElement = document.createElement(@"object");
@@ -207,7 +207,7 @@ CPRemoveTraitFontAction = 7;
 - (@action)addFontTrait:(id)sender
 {
    var tag = [sender tag];
-    _activeChange = tag === nil ? @{} : @{ @"addTraits": tag };
+    _activeChange = tag == nil ? @{} : @{ @"addTraits": tag };
    _fontAction = CPAddTraitFontAction;
    [self sendAction];
@@ -85,7 +85,7 @@ function CPImageInBundle()
    if (typeof(arguments[1]) === "number")
    {
-        if (arguments[1] !== nil && arguments[1] !== undefined)
+        if (arguments[1] != nil)
            size = CGSizeMake(arguments[1], arguments[2]);
        bundle = arguments[3];
@@ -161,7 +161,7 @@ function CPAppKitImage(aFilename, aSize)
 - (id)initByReferencingFile:(CPString)aFilename size:(CGSize)aSize
 {
    // Quietly return nil like in Cocoa, rather than crashing later.
-    if (aFilename === undefined || aFilename === nil)
+    if (aFilename == nil)
        return nil;
    self = [super init];
@@ -293,7 +293,7 @@ var CPBindingOperationAnd = 0,
    // If the value is nil AND the source doesn't respond to setPlaceholderString: then
    // we set the value to the placeholder. Otherwise, we do not want to short cut the process
    // of setting the placeholder that is based on the fact that the value is nil.
-    if ((aValue === undefined || aValue === nil || aValue === [CPNull null])
+    if ((aValue == nil || aValue === [CPNull null])
        && ![_source respondsToSelector:@selector(setPlaceholderString:)])
        aValue = [options objectForKey:CPNullPlaceholderBindingOption] || nil;
@@ -653,7 +653,7 @@ var CPBindingOperationAnd = 0,
            keyPath = [info objectForKey:CPObservedKeyPathKey],
            value   = [object valueForKeyPath:keyPath];
-        if (value === nil || value === undefined)
+        if (value == nil)
        {
            [_source setEnabled:NO];
            return;
@@ -796,7 +796,7 @@ var CPBindingOperationAnd = 0,
        else
            value = [theBinding transformValue:value withOptions:options];
-        if (value === nil || value === undefined)
+        if (value == nil)
            value = @"";
        result.value = result.value.replace("%{" + _patternPlaceholder + count + "}@", [value description]);
@@ -164,7 +164,7 @@ var _CPMenuBarVisible               = NO,
 + (void)_setOrRemoveMenuBarAttribute:(id)aValue forKey:(id)aKey
 {
-    if (aValue === nil)
+    if (aValue == nil)
        [_CPMenuBarAttributes removeObjectForKey:aKey];
    else
        [_CPMenuBarAttributes setObject:aValue forKey:aKey];
@@ -553,7 +553,7 @@ var STICKY_TIME_INTERVAL            = 0.4,
        var iter = [selectorNames objectEnumerator],
            obj;
-        while ((obj = [iter nextObject]) !== nil)
+        while ((obj = [iter nextObject]) != nil)
        {
            var aSelector = CPSelectorFromString(obj);
@@ -587,7 +587,7 @@ var STICKY_TIME_INTERVAL            = 0.4,
    var iter = [[menu itemArray] objectEnumerator],
        obj;
-    while ((obj = [iter nextObject]) !== nil)
+    while ((obj = [iter nextObject]) != nil)
    {
        if ([obj isHidden] || ![obj isEnabled])
            continue;
@@ -384,7 +384,7 @@
 */
 - (void)_selectionDidChange
 {
-    if (_selection === undefined || _selection === nil)
+    if (_selection == nil)
        _selection = [[CPControllerSelectionProxy alloc] initWithController:self];
    [_selection controllerDidChange];
@@ -770,7 +770,7 @@ var CPObjectControllerContentKey                        = @"CPObjectControllerCo
        }
    }
-    if (value === nil || value.isa && [value isEqual:[CPNull null]])
+    if (value == nil || value.isa && [value isEqual:[CPNull null]])
        value = CPNullMarker;
    return value;
@@ -1438,7 +1438,7 @@ var CPOutlineViewCoalesceSelectionNotificationStateOff  = 0,
    _shouldRetargetChildIndex = YES;
    // set CPTableView's _retargetedDropRow based on retargetedItem and retargetedChildIndex
-    var retargetedItemInfo = (_retargetedItem !== nil) ? _itemInfosForItems[[_retargetedItem UID]] : _rootItemInfo;
+    var retargetedItemInfo = (_retargetedItem != nil) ? _itemInfosForItems[[_retargetedItem UID]] : _rootItemInfo;
    if (_retargedChildIndex === [retargetedItemInfo.children count])
    {
@@ -1940,7 +1940,7 @@ var CPOutlineViewCoalesceSelectionNotificationStateOff  = 0,
    if (theDropOperation === CPTableViewDropAbove)
    {
        var parentItem = [_outlineView _parentItemForUpperRow:theRow - 1 andLowerRow:theRow atMouseOffset:theOffset],
-            itemInfo = (parentItem !== nil) ? _outlineView._itemInfosForItems[[parentItem UID]] : _outlineView._rootItemInfo,
+            itemInfo = (parentItem != nil) ? _outlineView._itemInfosForItems[[parentItem UID]] : _outlineView._rootItemInfo,
            children = itemInfo.children;
        childIndex = [children indexOfObject:[_outlineView itemAtRow:theRow]];
@@ -397,7 +397,7 @@ var CPResponderNextResponderKey = @"CPResponderNextResponderKey",
 - (void)encodeWithCoder:(CPCoder)aCoder
 {
    // This will come out nil on the other side with decodeObjectForKey:
-    if (_nextResponder !== nil)
+    if (_nextResponder != nil)
        [aCoder encodeConditionalObject:_nextResponder forKey:CPResponderNextResponderKey];
    [aCoder encodeObject:_menu forKey:CPResponderMenuKey];
@@ -157,7 +157,7 @@ var CPRuleEditorItemPBoardType  = @"CPRuleEditorItemPBoardType",
 - (id)initWithFrame:(CGRect)frame
 {
    self = [super initWithFrame:frame];
-    if (self !== nil)
+    if (self)
    {
        _slices = [[CPMutableArray alloc] init];
@@ -419,7 +419,7 @@ var CPRuleEditorItemPBoardType  = @"CPRuleEditorItemPBoardType",
 */
 - (void)setFormattingStringsFilename:(CPString)stringsFilename
 {
-    if (_standardLocalizer === nil)
+    if (_standardLocalizer == nil)
        _standardLocalizer = [_CPRuleEditorLocalizer new];
    if (_stringsFilename !== stringsFilename)
@@ -427,14 +427,14 @@ var CPRuleEditorItemPBoardType  = @"CPRuleEditorItemPBoardType",
        // Convert an empty string to nil
        _stringsFilename = stringsFilename || nil;
-        if (stringsFilename !== nil)
+        if (stringsFilename != nil)
        {
            if (![stringsFilename hasSuffix:@".strings"])
                stringsFilename = stringsFilename + @".strings";
            var path = [[CPBundle mainBundle] pathForResource:stringsFilename];
-            if (path !== nil)
+            if (path != nil)
                [_standardLocalizer loadContentOfURL:[CPURL URLWithString:path]];
        }
    }
@@ -465,7 +465,7 @@ var CPRuleEditorItemPBoardType  = @"CPRuleEditorItemPBoardType",
 */
 - (void)setCriteria:(CPArray)criteria andDisplayValues:(CPArray)values forRowAtIndex:(int)rowIndex
 {
-    if (criteria === nil || values === nil)
+    if (criteria == nil || values == nil)
        [CPException raise:CPInvalidArgumentException reason:_cmd + @". criteria and values parameters must not be nil."];
    if (rowIndex < 0 || rowIndex >= [self numberOfRows])
@@ -852,7 +852,7 @@ TODO: implement
        while (current_index !== CPNotFound)
        {
            var subpredicate = [self predicateForRow:current_index];
-            if (subpredicate !== nil)
+            if (subpredicate != nil)
                [subpredicates addObject:subpredicate];
            current_index = [subrowsIndexes indexGreaterThanIndex:current_index];
@@ -888,33 +888,33 @@ TODO: implement
        modifier = [predicateParts objectForKey:CPRuleEditorPredicateComparisonModifier],
        selector = CPSelectorFromString([predicateParts objectForKey:CPRuleEditorPredicateCustomSelector]);
-    if (lhs === nil)
+    if (lhs == nil)
    {
        CPLogConsole(@"missing left expression in predicate parts dictionary");
        return NULL;
    }
-    if (rhs === nil)
+    if (rhs ==  nil)
    {
        CPLogConsole(@"missing right expression in predicate parts dictionary");
        return NULL;
    }
-    if (selector === nil && operator === nil)
+    if (selector == nil && operator == nil)
    {
        CPLogConsole(@"missing operator and selector in predicate parts dictionary");
        return NULL;
    }
-    if (modifier === nil)
+    if (modifier == nil)
        CPLogConsole(@"missing modifier in predicate parts dictionary. Setting default: CPDirectPredicateModifier");
-    if (options === nil)
+    if (options == nil)
        CPLogConsole(@"missing options in predicate parts dictionary. Setting default: CPCaseInsensitivePredicateOption");
    try
    {
-        if (selector !== nil)
+        if (selector != nil)
            predicate = [CPComparisonPredicate predicateWithLeftExpression:lhs
                                                           rightExpression:rhs
                                                            customSelector:selector
@@ -1167,7 +1167,7 @@ TODO: implement
 - (BOOL)_wantsRowAnimations
 {
-    return (_currentAnimation !== nil);
+    return (_currentAnimation != nil);
 }
 - (void)_updateButtonVisibilities
@@ -1753,7 +1753,7 @@ TODO: implement
    {
        var subpredicate = [self predicateForRow:current_index];
-        if (subpredicate !== nil)
+        if (subpredicate != nil)
            [subpredicates addObject:subpredicate];
        current_index = [subindexes indexGreaterThanIndex:current_index];
@@ -1795,7 +1795,7 @@ TODO: implement
            startRect = [aslice frame],
            startIndex = [aslice rowIndex] - 1;
-        if ([aslice superview] === nil)
+        if ([aslice superview] == nil)
        {
            startRect = CGRectMake(0, startIndex * _sliceHeight, CGRectGetWidth(startRect), _sliceHeight);
            [aslice _reconfigureSubviews];
@@ -2129,7 +2129,7 @@ TODO: implement
 - (BOOL)_dragShouldBeginFromMouseDown:(CPView)view
 {
-    return (([self nestingMode] === CPRuleEditorNestingModeList ||  [view rowIndex] !== 0) && _editable && [view isKindOfClass:[_CPRuleEditorViewSliceRow class]] && _draggingRows === nil);
+    return (([self nestingMode] === CPRuleEditorNestingModeList ||  [view rowIndex] !== 0) && _editable && [view isKindOfClass:[_CPRuleEditorViewSliceRow class]] && _draggingRows == nil);
 }
 - (BOOL)_performDragForSlice:(id)slice withEvent:(CPEvent)event
@@ -2321,7 +2321,7 @@ TODO: implement
 - (void)_postRowCountChangedNotificationOfType:(CPString)notificationName indexes:indexes
 {
-    var userInfo = indexes === nil ? @{} : @{ "indexes": indexes };
+    var userInfo = indexes == nil ? @{} : @{ "indexes": indexes };
    [[CPNotificationCenter defaultCenter] postNotificationName:notificationName object:self userInfo:userInfo];
 }
@@ -2386,7 +2386,7 @@ TODO: implement
    var criteria = [self criteriaForRow:aRow];
    indexofCriterion = [criteria indexOfObject:criterion];
-    if (parentItem !== nil
+    if (parentItem != nil
        && indexofCriterion !== CPNotFound
        && indexofCriterion < [criteria count] - 1)
    {
@@ -2469,7 +2469,7 @@ var CPRuleEditorAlignmentGridWidthKey       = @"CPRuleEditorAlignmentGridWidth",
 - (id)initWithCoder:(CPCoder)coder
 {
    self = [super initWithCoder:coder];
-    if (self !== nil)
+    if (self)
    {
        [self setFormattingStringsFilename:[coder decodeObjectForKey:CPRuleEditorStringsFilenameKey]];
        _alignmentGridWidth      = [coder decodeFloatForKey:CPRuleEditorAlignmentGridWidthKey];
@@ -2553,7 +2553,7 @@ var CriteriaKey         = @"criteria",
 - (id)initWithCoder:(CPCoder)coder
 {
    self = [super init];
-    if (self !== nil)
+    if (self)
    {
        subrows = [coder decodeObjectForKey:SubrowsKey];
        criteria = [coder decodeObjectForKey:CriteriaKey];
@@ -131,7 +131,7 @@
 {
    var title = [self title];
-    if (title !== nil)
+    if (title != nil)
        return title;
    return [self templateView];
@@ -40,7 +40,7 @@ var LocalizerStringsRegex = new RegExp("\"(.+)\"\\s*=\\s*\"(.+)\"\\s*;\\s*(//.+)
 - (void)reloadIfNeeded
 {
-    if (connection !== nil) // Connection waiting
+    if (connection != nil) // Connection waiting
    {
        connection = nil;
@@ -51,7 +51,7 @@ var LocalizerStringsRegex = new RegExp("\"(.+)\"\\s*=\\s*\"(.+)\"\\s*;\\s*(//.+)
 - (void)connection:(CPURLConnection)aConnection didReceiveData:(CPString)rawString
 {
-    if (connection !== nil && rawString !== nil)
+    if (connection != nil && rawString != nil)
        [self loadContent:rawString];
    connection = nil;
@@ -83,11 +83,11 @@ var LocalizerStringsRegex = new RegExp("\"(.+)\"\\s*=\\s*\"(.+)\"\\s*;\\s*(//.+)
 {
    [self reloadIfNeeded];
-    if (_dictionary !== nil && aString !== nil)
+    if (_dictionary != nil && aString != nil)
    {
        var localized = [_dictionary objectForKey:aString];
-        if (localized !== nil)
+        if (localized != nil)
            return localized;
    }
@@ -147,7 +147,7 @@ var CPScrollerStyleGlobal                       = CPScrollerStyleOverlay,
    var globalValue = [[CPBundle mainBundle] objectForInfoDictionaryKey:@"CPScrollersGlobalStyle"];
-    if (globalValue === nil || globalValue === -1)
+    if (globalValue == nil || globalValue === -1)
        CPScrollerStyleGlobal = _isBrowserUsingOverlayScrollers() ? CPScrollerStyleOverlay : CPScrollerStyleLegacy
    else
        CPScrollerStyleGlobal = globalValue;
@@ -309,7 +309,7 @@ Notifies the delegate when the scroll view has finished scrolling.
    _delegate = aDelegate;
    _implementedDelegateMethods = 0;
-    if (_delegate === nil)
+    if (_delegate == nil)
        return;
    if ([_delegate respondsToSelector:@selector(scrollViewWillScroll:)])
@@ -183,7 +183,7 @@ var CPAutosavedRecentsChangedNotification = @"CPAutosavedRecentsChangedNotificat
 - (void)resetSearchButton
 {
    var button = [self searchButton],
-        searchButtonImage = (_searchMenuTemplate === nil) ? [self currentValueForThemeAttribute:@"image-search"] : [self currentValueForThemeAttribute:@"image-find"];
+        searchButtonImage = (_searchMenuTemplate == nil) ? [self currentValueForThemeAttribute:@"image-search"] : [self currentValueForThemeAttribute:@"image-find"];
    [button setBordered:NO];
    [button setImageScaling:CPImageScaleAxesIndependently];
@@ -491,7 +491,7 @@ var CPAutosavedRecentsChangedNotification = @"CPAutosavedRecentsChangedNotificat
 - (void)_addStringToRecentSearches:(CPString)string
 {
-    if (string === nil || string === @"" || [_recentSearches containsObject:string])
+    if (string == nil || string === @"" || [_recentSearches containsObject:string])
        return;
    var searches = [CPMutableArray arrayWithArray:_recentSearches];
@@ -598,7 +598,7 @@ var CPAutosavedRecentsChangedNotification = @"CPAutosavedRecentsChangedNotificat
 - (void)_updateSearchMenu
 {
-    if (_searchMenuTemplate === nil)
+    if (_searchMenuTemplate == nil)
        return;
    var menu = [[CPMenu alloc] init],
@@ -678,7 +678,7 @@ var CPAutosavedRecentsChangedNotification = @"CPAutosavedRecentsChangedNotificat
 - (void)_showMenu
 {
-    if (_searchMenu === nil || [_searchMenu numberOfItems] === 0 || ![self isEnabled])
+    if (_searchMenu == nil || [_searchMenu numberOfItems] === 0 || ![self isEnabled])
        return;
    var aFrame = [[self superview] convertRect:[self frame] toView:nil],
@@ -752,12 +752,12 @@ var CPAutosavedRecentsChangedNotification = @"CPAutosavedRecentsChangedNotificat
 - (void)_loadRecentSearchList
 {
    var name = [self recentsAutosaveName];
-    if (name === nil)
+    if (name == nil)
        return;
    var list = [[CPUserDefaults standardUserDefaults] objectForKey:name];
-    if (list !== nil)
+    if (list != nil)
        _recentSearches = list;
 }
@@ -1168,7 +1168,7 @@ The sum of the views and the sum of the dividers should be equal to the size of
        {
            var item = preCollapseArray[i];
-            if (item === nil)
+            if (item == nil)
                [_preCollapsePositions removeObjectForKey:String(i)];
            else
                [_preCollapsePositions setObject:item forKey:String(i)];
@@ -275,7 +275,7 @@ var CPTabViewDidSelectTabViewItemSelector           = 1 << 1,
 */
 - (void)selectNextTabViewItem:(id)aSender
 {
-    if (_selectedTabViewItem === nil)
+    if (_selectedTabViewItem == nil)
        return;
    var nextIndex = [self indexOfTabViewItem:_selectedTabViewItem] + 1;
@@ -293,7 +293,7 @@ var CPTabViewDidSelectTabViewItemSelector           = 1 << 1,
 */
 - (void)selectPreviousTabViewItem:(id)aSender
 {
-    if (_selectedTabViewItem === nil)
+    if (_selectedTabViewItem == nil)
        return;
    var previousIndex = [self indexOfTabViewItem:_selectedTabViewItem] - 1;
@@ -353,15 +353,15 @@ var CPTabViewDidSelectTabViewItemSelector           = 1 << 1,
 {
    var controller = [aTabViewItem viewController];
-    if (controller !== nil && ![controller isViewLoaded])
+    if (controller != nil && ![controller isViewLoaded])
    {
        [controller loadViewWithCompletionHandler:function(view, error)
        {
-            if (error !== nil)
+            if (error != nil)
            {
                CPLog.warn("Could not load the view for item " + aTabViewItem + ". " + error);
            }
-            else if (view !== nil)
+            else if (view != nil)
            {
                [aTabViewItem setView:view];
@@ -599,7 +599,7 @@ var CPTabViewDidSelectTabViewItemSelector           = 1 << 1,
 {
    var theBinder = [self binderForBinding:CPSelectionIndexesBinding];
-    if (theBinder !== nil)
+    if (theBinder != nil)
        [theBinder reverseSetValueFor:@"selectionIndexes"];
    else
    {
@@ -593,7 +593,7 @@ CPTableColumnUserResizingMask   = 1 << 1;
 {
    var options = [_info objectForKey:CPOptionsKey],
        optionValue = [options objectForKey:CPCreatesSortDescriptorBindingOption];
-    return optionValue === nil ? YES : [optionValue boolValue];
+    return optionValue == nil ? YES : [optionValue boolValue];
 }
@end
@@ -2977,7 +2977,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
        oldMainSortDescriptor = [[self sortDescriptors] objectAtIndex: 0];
    // Remove every main descriptor equivalents (normally only one)
-    while ((descriptor = [e nextObject]) !== nil)
+    while ((descriptor = [e nextObject]) != nil)
    {
        if ([[descriptor key] isEqual: [newMainSortDescriptor key]])
            [outdatedDescriptors addObject:descriptor];
@@ -3319,7 +3319,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
    var oldSortDescriptors = [[self sortDescriptors] copy],
        newSortDescriptors = [CPArray array];
-    if (sortDescriptors !== nil)
+    if (sortDescriptors != nil)
        [newSortDescriptors addObjectsFromArray:sortDescriptors];
    if ([newSortDescriptors isEqual:oldSortDescriptors])
@@ -3380,7 +3380,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
        objectValue = tableColumnObjectValues[aRowIndex];
    // tableView:objectValueForTableColumn:row: is optional if content bindings are in place.
-    if (objectValue === undefined)
+    if (objectValue == nil)
    {
        if ([self _dataSourceRespondsToObjectValueForTableColumn])
        {
@@ -3835,7 +3835,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
    else if ([self _delegateRespondsToDataViewForTableColumn])
        _viewForTableColumnRowSelector = @selector(_sendDelegateDataViewForTableColumn:row:);
-     _isViewBased = (_viewForTableColumnRowSelector !== nil || _archivedDataViews !== nil);
+     _isViewBased = (_viewForTableColumnRowSelector != nil || _archivedDataViews != nil);
 }
 /*!
@@ -4724,7 +4724,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
        dropOperation = [self _proposedDropOperationAtPoint:location],
        row = [self _proposedRowAtPoint:location];
-    if (_retargetedDropRow !== nil)
+    if (_retargetedDropRow != nil)
        row = _retargetedDropRow;
    var draggedTypes = [self registeredDraggedTypes],
@@ -4780,7 +4780,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
 */
 - (CPTableViewDropOperation)_proposedDropOperationAtPoint:(CGPoint)theDragPoint
 {
-    if (_retargetedDropOperation !== nil)
+    if (_retargetedDropOperation != nil)
        return _retargetedDropOperation;
    var row = [self _proposedRowAtPoint:theDragPoint],
@@ -4859,10 +4859,10 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
        row = [self _proposedRowAtPoint:location],
        dragOperation = [self _sendDataSourceValidateDrop:sender proposedRow:row proposedDropOperation:dropOperation];
-    if (_retargetedDropRow !== nil)
+    if (_retargetedDropRow != nil)
        row = _retargetedDropRow;
-    if (_retargetedDropOperation !== nil)
+    if (_retargetedDropOperation != nil)
        dropOperation = _retargetedDropOperation;
    if (dropOperation === CPTableViewDropOn && row >= numberOfRows)
@@ -4907,7 +4907,7 @@ Your delegate can implement this method to avoid subclassing the tableview to ad
        operation = [self _proposedDropOperationAtPoint:location],
        row = _retargetedDropRow;
-    if (row === nil)
+    if (row == nil)
        row = [self _proposedRowAtPoint:location];
    return [self _sendDataSourceAcceptDrop:sender row:row dropOperation:operation];
@@ -1332,7 +1332,7 @@ CPTextFieldStatePlaceholder = CPThemeState("placeholder");
        // If there is a formatter, make sure the object value can be formatted successfully
        var formattedString = [self hasThemeState:CPThemeStateEditing] ? [formatter editingStringForObjectValue:aValue] : [formatter stringForObjectValue:aValue];
-        if (formattedString === nil)
+        if (formattedString == nil)
        {
            var value = nil;
@@ -1342,7 +1342,7 @@ CPTextFieldStatePlaceholder = CPThemeState("placeholder");
                value = undefined;
            [super setObjectValue:value];
-            _stringValue = (value === nil || value === undefined) ? @"" : String(value);
+            _stringValue = (value == nil) ? @"" : String(value);
        }
        else
            _stringValue = formattedString;
@@ -1498,7 +1498,7 @@ CPTextFieldStatePlaceholder = CPThemeState("placeholder");
                else
                    [[CPRunLoop mainRunLoop] performBlock:function(){ element.select(); } argument:nil order:0 modes:[CPDefaultRunLoopMode]];
            }
-            else if (wind !== nil && [wind makeFirstResponder:self])
+            else if (wind != nil && [wind makeFirstResponder:self])
                [self _selectText:sender immediately:immediately];
        }
        else
@@ -1508,7 +1508,7 @@ CPTextFieldStatePlaceholder = CPThemeState("placeholder");
 #else
        // Even if we can't actually select the text we need to preserve the first
        // responder side effect.
-        if (wind !== nil && [wind firstResponder] !== self)
+        if (wind != nil && [wind firstResponder] !== self)
            [wind makeFirstResponder:self];
 #endif
    }
@@ -2153,7 +2153,7 @@ var CPTextFieldIsEditableKey            = "CPTextFieldIsEditableKey",
        newValue    = [self valueForBinding:aBinding],
        value       = [destination valueForKeyPath:keyPath];
-    if (CPIsControllerMarker(value) && newValue === nil)
+    if (CPIsControllerMarker(value) && newValue == nil)
        return;
    newValue = [self reverseTransformValue:newValue withOptions:options];
@@ -94,7 +94,7 @@ var _availableTraits= [@"Normal", @"Italic", @"Bold", @"Bold Italic"],
 */
 + (BOOL)sharedFontPanelExists
 {
-    return _sharedFontPanel !== nil;
+    return _sharedFontPanel != nil;
 }
 /*!
@@ -980,7 +980,7 @@ Sets the selection to a range of characters in response to user action.
        if (!isNewSelection && _mouseDownOldSelection)
            isNewSelection = !CPEqualRanges(newSelectionRange, _mouseDownOldSelection);
-        if (doOverwrite && _placeholderString === nil && isNewSelection)
+        if (doOverwrite && _placeholderString == nil && isNewSelection)
            [self setTypingAttributes:[_textStorage attributesAtIndex:CPMaxRange(range) effectiveRange:nil]];
        [[CPNotificationCenter defaultCenter] postNotificationName:CPTextViewDidChangeSelectionNotification object:self];
@@ -2916,7 +2916,7 @@ var _CPCopyPlaceholder = '-';
 - (void)setValue:(id)aValue forBinding:(CPString)aBinding
 {
-    if (aValue === nil || (aValue.isa && [aValue isMemberOfClass:CPNull]))
+    if (aValue == nil || (aValue.isa && [aValue isMemberOfClass:CPNull]))
        [_source _setPlaceholderString:[self _placeholderForMarker:CPNullMarker]];
    else
        [_source _setPlaceholderString:nil];
@@ -113,7 +113,7 @@ function _points2twips(a) { return (a) * 20.0; }
    keyArray = [keyArray sortedArrayUsingSelector:@selector(compare:)];
    fontEnum = [keyArray objectEnumerator];
-    while ((currFont = [fontEnum nextObject]) !== nil)
+    while ((currFont = [fontEnum nextObject]) != nil)
    {
        var fontFamily,
            detail;
@@ -149,7 +149,7 @@ function _points2twips(a) { return (a) * 20.0; }
        next,
        i;
-    while ((next = [keyEnum nextObject]) !== nil)
+    while ((next = [keyEnum nextObject]) != nil)
    {
        var cn = [colorDict objectForKey:next];
        [list insertObject:[CPColor colorWithCSSString:next] atIndex:[cn intValue]-1];
@@ -259,7 +259,7 @@ var CPThemesByName          = { },
        attributeNames = [attributes keyEnumerator],
        objectThemeClass = [anObject themeClass];
-    while ((attributeName = [attributeNames nextObject]) !== nil)
+    while ((attributeName = [attributeNames nextObject]) != nil)
        [self _recordAttribute:[attributes objectForKey:attributeName] forClass:objectThemeClass];
 }
@@ -687,7 +687,7 @@ CPThemeStateNormalString        = String(CPThemeStateNormal);
 {
    var attribute = [[_CPThemeAttribute alloc] initWithName:_name defaultValue:_defaultValue defaultAttribute:_themeDefaultAttribute];
-    if (aValue !== undefined && aValue !== nil)
+    if (aValue != nil)
        attribute._values = @{ CPThemeStateNormalString: aValue };
    return attribute;
@@ -695,7 +695,7 @@ CPThemeStateNormalString        = String(CPThemeStateNormal);
 - (_CPThemeAttribute)attributeBySettingValue:(id)aValue forState:(ThemeState)aState
 {
-    var shouldRemoveValue = aValue === undefined || aValue === nil,
+    var shouldRemoveValue = aValue == nil,
        attribute = [[_CPThemeAttribute alloc] initWithName:_name defaultValue:_defaultValue defaultAttribute:_themeDefaultAttribute],
        values = _values;
@@ -738,7 +738,7 @@ CPThemeStateNormalString        = String(CPThemeStateNormal);
    // Not in cache. OK, search in values.
    value = [_values objectForKey:stateName];
-    if ((value !== undefined) && (value !== nil))
+    if (value != nil)
        return _cache[stateName] = value;
    // No direct match in values.
@@ -754,13 +754,13 @@ CPThemeStateNormalString        = String(CPThemeStateNormal);
    // Still don't have a value? OK, let's use the normal value.
    value = [_values objectForKey:String(CPThemeStateNormal)];
-    if ((value !== undefined) && (value !== nil))
+    if (value != nil)
        return _cache[stateName] = value;
    // No normal value, try asking _themeDefaultAttribute
    value = [_themeDefaultAttribute valueForState:aState];
-    if ((value !== undefined) && (value !== nil))
+    if (value != nil)
        return _cache[stateName] = value;
    // Well, last option, use default value
@@ -630,7 +630,7 @@ CPTokenFieldDeleteButtonType     = 1;
 - (void)setObjectValue:(id)aValue
 {
-    if (aValue !== nil && ![aValue isKindOfClass:[CPArray class]])
+    if (aValue != nil && ![aValue isKindOfClass:[CPArray class]])
    {
        [super setObjectValue:nil];
        return;
@@ -645,7 +645,7 @@ CPTokenFieldDeleteButtonType     = 1;
        newTokens = [];
    // Preserve as many existing tokens as possible to reduce redraw flickering.
-    if (aValue !== nil)
+    if (aValue != nil)
    {
        for (var i = 0, count = [aValue count]; i < count; i++)
        {
@@ -666,7 +666,7 @@ CPTokenFieldDeleteButtonType     = 1;
                }
            }
-            if (newToken === nil)
+            if (newToken == nil)
            {
                newToken = [_CPTokenFieldToken new];
                [newToken setTokenField:self];
@@ -1310,7 +1310,7 @@ CPTokenFieldDeleteButtonType     = 1;
    {
        var stringForRepresentedObject = [_tokenFieldDelegate tokenField:self displayStringForRepresentedObject:representedObject];
-        if (stringForRepresentedObject !== nil)
+        if (stringForRepresentedObject != nil)
            return stringForRepresentedObject;
    }
@@ -1332,7 +1332,7 @@ CPTokenFieldDeleteButtonType     = 1;
    {
        var approvedObjects = [_tokenFieldDelegate tokenField:self shouldAddObjects:tokens atIndex:index];
-        if (approvedObjects !== nil)
+        if (approvedObjects != nil)
            return approvedObjects;
    }
@@ -1354,7 +1354,7 @@ CPTokenFieldDeleteButtonType     = 1;
    {
        var token = [_tokenFieldDelegate tokenField:self representedObjectForEditingString:aString];
-        if (token !== nil && token !== undefined)
+        if (token != nil)
            return token;
        // If nil was returned, assume the string is the represented object. The alternative would have been
        // to not add anything to the object value array for a nil response.
@@ -363,7 +363,7 @@ var CPToolbarsByIdentifier              = nil,
        item = [item copy];
-        if (item === nil)
+        if (item == nil)
            [CPException raise:CPInvalidArgumentException
                         reason:@"Toolbar delegate " + _delegate + " returned nil toolbar item for identifier \"" + identifier + "\""];
@@ -51,7 +51,7 @@ CPTrackingOwnerImplementsCursorUpdate = 1 << 4;
 /*!
 @ingroup appkit
- 
+
 A CPTrackingArea defines a region of view that generates mouse-tracking and
 cursor-update events when the mouse is over that region.
 */
@@ -61,7 +61,7 @@ CPTrackingOwnerImplementsCursorUpdate = 1 << 4;
    CPTrackingAreaOptions   _options                    @accessors(getter=options);
    id                      _owner                      @accessors(getter=owner);
    CPDictionary            _userInfo                   @accessors(getter=userInfo);
-    
+
    CPView                  _referencingView            @accessors(property=view);
    CGRect                  _windowRect                 @accessors(getter=windowRect);
@@ -72,13 +72,13 @@ CPTrackingOwnerImplementsCursorUpdate = 1 << 4;
 #pragma mark -
 #pragma mark Initialization
-/*! 
+/*!
- Initializes and returns an object defining a region of a view to receive mouse-tracking events, mouse-moved events, cursor-update events, or possibly 
+ Initializes and returns an object defining a region of a view to receive mouse-tracking events, mouse-moved events, cursor-update events, or possibly
 all these events.
 */
 - (CPTrackingArea)initWithRect:(CGRect)aRect options:(CPTrackingAreaOptions)options owner:(id)owner userInfo:(CPDictionary)userInfo
 {
-    if (owner === nil)
+    if (owner == nil)
        [CPException raise:CPInternalInconsistencyException reason:"No owner specified"];
    if (options === 0)
@@ -116,7 +116,7 @@ CPTrackingOwnerImplementsCursorUpdate = 1 << 4;
        if ([_owner respondsToSelector:@selector(cursorUpdate:)])
            _implementedOwnerMethods |= CPTrackingOwnerImplementsCursorUpdate;
    }
-    
+
    return self;
 }
@@ -156,7 +156,7 @@ CPTrackingOwnerImplementsCursorUpdate = 1 << 4;
        _referencingView = [aCoder decodeObjectForKey:CPTrackingAreaReferencingViewKey];
        _windowRect      = [aCoder decodeObjectForKey:CPTrackingAreaWindowRect];
    }
-    
+
    return self;
 }
@@ -160,13 +160,13 @@ var CPUserDefaultsControllerSharedKey = "CPUserDefaultsControllerSharedKey";
 - (id)valueForKey:(CPString)aKey
 {
    var value = [_cachedValues objectForKey:aKey];
-    if (value === nil)
+    if (value == nil)
    {
        value = [[_controller defaults] objectForKey:aKey];
-        if (value === nil)
+        if (value == nil)
            value = [[_controller initialValues] objectForKey:aKey];
-        if (value !== nil)
+        if (value != nil)
            [_cachedValues setObject:value forKey:aKey];
    }
    return value;
@@ -220,7 +220,7 @@ var CPUserDefaultsControllerSharedKey = "CPUserDefaultsControllerSharedKey";
        [self willChangeValueForKey:key];
        var initialValue = [initial objectForKey:key];
-        if (initialValue !== nil)
+        if (initialValue != nil)
            [_cachedValues setObject:initialValue forKey:key];
        else
            [_cachedValues removeObjectForKey:key];
@@ -800,7 +800,7 @@ var CPViewHighDPIDrawingEnabled = YES;
    var addedSubview = nil,
        addedSubviewEnumerator = [addedSubviews objectEnumerator];
-    while ((addedSubview = [addedSubviewEnumerator nextObject]) !== nil)
+    while ((addedSubview = [addedSubviewEnumerator nextObject]) != nil)
        [self addSubview:addedSubview];
    // If the order is fine, no need to reorder.
@@ -1703,8 +1703,8 @@ var CPViewHighDPIDrawingEnabled = YES;
 - (void)_setSuperview:(CPView)aSuperview
 {
-    var hasOldSuperview = (_superview !== nil),
+    var hasOldSuperview = (_superview != nil),
-        hasNewSuperview = (aSuperview !== nil),
+        hasNewSuperview = (aSuperview != nil),
        oldSuperviewIsHidden = hasOldSuperview && [_superview isHiddenOrHasHiddenAncestor],
        newSuperviewIsHidden = hasNewSuperview && [aSuperview isHiddenOrHasHiddenAncestor];
@@ -3802,7 +3802,7 @@ var CPViewAutoresizingMaskKey       = @"CPViewAutoresizingMask",
        // Other views (CPBox) might set an autoresizes mask on their subviews before it is actually decoded.
        // We make sure we don't override the value by checking if it was already set.
-        if (_autoresizingMask === nil)
+        if (_autoresizingMask == nil)
            _autoresizingMask = [aCoder decodeIntForKey:CPViewAutoresizingMaskKey] || CPViewNotSizable;
        _autoresizesSubviews = ![aCoder containsValueForKey:CPViewAutoresizesSubviewsKey] || [aCoder decodeBoolForKey:CPViewAutoresizesSubviewsKey];
@@ -3876,7 +3876,7 @@ var CPViewAutoresizingMaskKey       = @"CPViewAutoresizingMask",
    [aCoder encodeRect:_bounds forKey:CPViewBoundsKey];
    // This will come out nil on the other side with decodeObjectForKey:
-    if (_window !== nil)
+    if (_window != nil)
        [aCoder encodeConditionalObject:_window forKey:CPViewWindowKey];
    var count = [_subviews count],
@@ -3895,7 +3895,7 @@ var CPViewAutoresizingMaskKey       = @"CPViewAutoresizingMask",
        [aCoder encodeObject:encodedSubviews forKey:CPViewSubviewsKey];
    // This will come out nil on the other side with decodeObjectForKey:
-    if (_superview !== nil)
+    if (_superview != nil)
        [aCoder encodeConditionalObject:_superview forKey:CPViewSuperviewKey];
    if (_autoresizingMask !== CPViewNotSizable)
@@ -3904,7 +3904,7 @@ var CPViewAutoresizingMaskKey       = @"CPViewAutoresizingMask",
    if (!_autoresizesSubviews)
        [aCoder encodeBool:_autoresizesSubviews forKey:CPViewAutoresizesSubviewsKey];
-    if (_backgroundColor !== nil)
+    if (_backgroundColor != nil)
        [aCoder encodeObject:_backgroundColor forKey:CPViewBackgroundColorKey];
    if (_hitTests !== YES)
@@ -3921,12 +3921,12 @@ var CPViewAutoresizingMaskKey       = @"CPViewAutoresizingMask",
    var nextKeyView = [self nextKeyView];
-    if (nextKeyView !== nil && ![nextKeyView isEqual:self])
+    if (nextKeyView != nil && ![nextKeyView isEqual:self])
        [aCoder encodeConditionalObject:nextKeyView forKey:CPViewNextKeyViewKey];
    var previousKeyView = [self previousKeyView];
-    if (previousKeyView !== nil && ![previousKeyView isEqual:self])
+    if (previousKeyView != nil && ![previousKeyView isEqual:self])
        [aCoder encodeConditionalObject:previousKeyView forKey:CPViewPreviousKeyViewKey];
    [self _encodeThemeObjectsWithCoder:aCoder];
@@ -258,7 +258,7 @@ var CPViewControllerCachedCibs;
        [self loadView];
-        if (_view === nil && [cibOwner isKindOfClass:[CPDocument class]])
+        if (_view == nil && [cibOwner isKindOfClass:[CPDocument class]])
            [self setView:[cibOwner valueForKey:@"view"]];
        if (!_view)
@@ -408,7 +408,7 @@ var CPViewControllerCachedCibs;
        [self willChangeValueForKey:"isViewLoaded"];
    _view = aView;
-    _isViewLoaded = aView !== nil;
+    _isViewLoaded = aView != nil;
    if (willChangeIsViewLoaded)
        [self didChangeValueForKey:"isViewLoaded"];
@@ -421,7 +421,7 @@ var CPViewControllerCachedCibs;
 - (void)_registerOrUnregister:(BOOL)shouldRegister notificationsForView:(CPView)aView
 {
-    if (aView === nil)
+    if (aView == nil)
        return;
    var center = [CPNotificationCenter defaultCenter],
@@ -470,7 +470,7 @@ CPWebViewAppKitScrollMaxPollCount                  = 3;
        _iframe.src = _url;
    }
-    else if (_html !== nil)
+    else if (_html != nil)
    {
        // clear the iframe
        _iframe.src = "";
@@ -480,7 +480,7 @@ CPWebViewAppKitScrollMaxPollCount                  = 3;
        _ignoreLoadEnd = NO;
-        if (_loadHTMLStringTimer !== nil)
+        if (_loadHTMLStringTimer != nil)
        {
            window.clearTimeout(_loadHTMLStringTimer);
            _loadHTMLStringTimer = nil;
@@ -848,7 +848,7 @@ CPWebViewAppKitScrollMaxPollCount                  = 3;
 - (@action)reload:(id)sender
 {
    // If we're displaying pure HTML, redisplay it.
-    if (!_url && (_html !== nil))
+    if (!_url && (_html != nil))
        [self loadHTMLString:_html];
    else
        [self _loadMainFrameURL];
@@ -3119,7 +3119,7 @@ CPTexturedBackgroundWindowMask
 */
 - (CPWindow)attachedSheet
 {
-    if (_sheetContext === nil)
+    if (_sheetContext == nil)
        return nil;
   return _sheetContext["sheet"];
@@ -752,7 +752,7 @@ _CPWindowViewResizeSlop = 3;
 - (BOOL)showsResizeIndicator
 {
-    return _resizeIndicator !== nil;
+    return _resizeIndicator != nil;
 }
 - (void)setResizeIndicatorOffset:(CGSize)anOffset
@@ -168,7 +168,7 @@
 */
 - (BOOL)isWindowLoaded
 {
-    return _window !== nil;
+    return _window != nil;
 }
 /*!
@@ -184,7 +184,7 @@
        [self loadWindow];
-        if (_window === nil && [_cibOwner isKindOfClass:[CPDocument class]])
+        if (_window == nil && [_cibOwner isKindOfClass:[CPDocument class]])
            [self setWindow:[_cibOwner valueForKey:@"window"]];
        if (!_window)
@@ -152,7 +152,7 @@ var CPCibObjectDataKey  = @"CPCibObjectDataKey";
        var key = nil,
            keyEnumerator = [replacementClasses keyEnumerator];
-        while ((key = [keyEnumerator nextObject]) !== nil)
+        while ((key = [keyEnumerator nextObject]) != nil)
            [unarchiver setClass:[replacementClasses objectForKey:key] forClassName:key];
    }
@@ -110,7 +110,7 @@
    var object = nil,
        objectEnumerator = [_visibleWindows objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        [_replacementObjects[[object UID]] makeKeyAndOrderFront:self];
 }
@@ -260,7 +260,7 @@ var frameToCSSTranslationTransformMatrix = function(start, current)
        return nil;
    }
-    if ([[self animatorClass] _cssPropertiesForKeyPath:aKey] !== nil)
+    if ([[self animatorClass] _cssPropertiesForKeyPath:aKey] != nil)
        return [CAAnimation animation];
    return nil;
@@ -25,7 +25,7 @@ var _supportsCSSAnimations = null;
    if ([self class] !== [_CPObjectAnimator class])
        return;
-    var compat = (CPBrowserCSSProperty("animation") !== nil);
+    var compat = (CPBrowserCSSProperty("animation") != nil);
    CPSetPlatformFeature(CPCSSAnimationFeature, compat);
 }
@@ -374,7 +374,7 @@ function CGContextFillRect(aContext, aRect)
 */
 function CGContextFillRects(aContext, rects, count)
 {
-    if (arguments[2] === undefined)
+    if (arguments[2] == nil)
        var count = rects.length;
    CGContextBeginPath(aContext);
@@ -641,7 +641,7 @@ function CGContextStrokeLineSegments(aContext, points, count)
 {
    var i = 0;
-    if (count === NULL)
+    if (count == NULL)
        var count = points.length;
    CGContextBeginPath(aContext);
@@ -140,7 +140,7 @@ function CGContextAddCurveToPoint(aContext, cp1x, cp1y, cp2x, cp2y, x, y)
 function CGContextAddLines(aContext, points, count)
 {
    // implementation mirrors that of CGPathAddLines()
-    if (count === null || count === undefined)
+    if (count == null)
        count = points.length;
    if (count < 1)
@@ -234,7 +234,7 @@ function CGContextAddQuadCurveToPoint(aContext, cpx, cpy, x, y)
 function CGContextAddRects(aContext, rects, count)
 {
-    if (count === null || count === undefined)
+    if (count == null)
        count = rects.length;
    for (var i = 0; i < count; ++i)
@@ -297,7 +297,7 @@ function CGContextFillRect(aContext, aRect)
 function CGContextFillRects(aContext, rects, count)
 {
-    if (count === null || count === undefined)
+    if (count == null)
        count = rects.length;
    for (var i = 0; i < count; ++i)
@@ -333,7 +333,7 @@ function CGContextClipToRect(aContext, aRect)
 function CGContextClipToRects(aContext, rects, count)
 {
-    if (count === null || count === undefined)
+    if (count == null)
        count = rects.length;
    _CGContextBeginPathCanvas(aContext);
@@ -30,7 +30,7 @@ kCGGradientDrawsAfterEndLocation    = 1 << 1;
 function CGGradientCreateWithColorComponents(aColorSpace, components, locations, count)
 {
-    if (locations === undefined || locations === NULL)
+    if (locations == NULL)
    {
        var num_of_colors = components.length / 4,
            locations = [];
@@ -39,7 +39,7 @@ function CGGradientCreateWithColorComponents(aColorSpace, components, locations,
            locations.push( idx / (num_of_colors - 1) );
    }
-    if (count === undefined || count === NULL)
+    if (count == NULL)
        count = locations.length;
    var colors = [];
@@ -188,7 +188,7 @@ function CGPathAddCurveToPoint(aPath, aTransform, cp1x, cp1y, cp2x, cp2y, x, y)
 function CGPathAddLines(aPath, aTransform, points, count)
 {
-    if (count === null || count === undefined)
+    if (count == null)
        count = points.length;
    if (!aPath || count < 1)
@@ -284,7 +284,7 @@ function CGPathAddRects(aPath, aTransform, rects, count)
 {
    var i = 0;
-    if (count === NULL)
+    if (count == NULL)
        var count = rects.length;
    for (; i < count; ++i)
@@ -156,7 +156,7 @@ var screenNeedsInitialization   = NO,
        platformWindowEnumerator = [platformWindows objectEnumerator],
        platformWindow = nil;
-    while ((platformWindow = [platformWindowEnumerator nextObject]) !== nil)
+    while ((platformWindow = [platformWindowEnumerator nextObject]) != nil)
    {
        if (platformWindow != primaryPlatformWindow)
            [platformWindow orderOut:self];
@@ -602,7 +602,7 @@ var _CPimageAndTextViewFrameSizeChangedFlag         = 1 << 0,
        }
    }
-    var needsDOMImageElement = _image !== nil && _imagePosition !== CPNoImage,
+    var needsDOMImageElement = _image != nil && _imagePosition !== CPNoImage,
        hasDOMImageElement = !!_DOMImageElement,
        // For CSS theming
        isCSSBasedImage = [_image isCSSBased],
@@ -523,7 +523,7 @@ var ListColumnIdentifier = @"1";
 {
    var value = [self selectedObjectValue];
-    return value !== nil ? [_dataSource list:self stringValueForObjectValue:value] : nil;
+    return value != nil ? [_dataSource list:self stringValueForObjectValue:value] : nil;
 }
 /*!
@@ -264,7 +264,7 @@ var _CPPopoverWindow_shouldClose_    = 1 << 4,
    originTop.x += platformRect.size.width / 2.0 - frameSize.width / 2.0;
    originTop.y -= frameSize.height;
-    var requestedEdge = (anEdge !== nil) ? anEdge : CPMaxXEdge,
+    var requestedEdge = (anEdge != nil) ? anEdge : CPMaxXEdge,
        requestedOrigin;
    switch (requestedEdge)
@@ -394,7 +394,7 @@ Every brace gets its own line, very simple to remember:
 In JavaScript, the null object value should be written as null. In Objective-J, it should be written as `nil` when the variable refers to an object, and `Nil` when it refers to a `Class`. Objective-J `BOOL` values should be written as `YES` and `NO`.
-Tests for `true/false`, `null/non-null`, and zero/non-zero should all be done without equality comparisons, except for cases when a value could be both 0 or `null` (or another "falsey" value). In this case, the comparison should be preceded by a comment explaining the distinction.
+Tests for `true/false`, `null/non-null`, and zero/non-zero should all be done without equality comparisons, except for cases when a value could be both 0, "" or `null` (or another "falsey" value). In this case, the comparison should be preceded by a comment explaining the distinction. When comparing with nil/null always use '==' / '!=' as the value cound also be undefined.
 ##### Right:
@@ -407,8 +407,8 @@ Tests for `true/false`, `null/non-null`, and zero/non-zero should all be done wi
    if (!count)
        return;
-    // object is an ID number, so 0 is OK, but null is not.
+    // object is an ID number, so 0 is OK, but null/undefined is not.
-    if (object === null)
+    if (object == null)
        return;
 ##### Wrong:
@@ -416,13 +416,13 @@ Tests for `true/false`, `null/non-null`, and zero/non-zero should all be done wi
    if (condition == true)
        doIt();
-    if (ptr == NULL)
+    if (ptr === NULL)
        return;
    if (count == 0)
        return;
-    if (object == null)
+    if (object === null)
        return;
 ---
@@ -458,11 +458,11 @@
            enumerator = [self objectEnumerator],
            object;
-        while ((object = [enumerator nextObject]) !== nil)
+        while ((object = [enumerator nextObject]) != nil)
        {
            var value = [object valueForKey:aKey];
-            if (value === nil || value === undefined)
+            if (value == nil)
                value = [CPNull null];
            newArray.push(value);
@@ -499,11 +499,11 @@
            enumerator = [self objectEnumerator],
            object;
-        while ((object = [enumerator nextObject]) !== nil)
+        while ((object = [enumerator nextObject]) != nil)
        {
            var value = [object valueForKeyPath:aKeyPath];
-            if (value === nil || value === undefined)
+            if (value == nil)
                value = [CPNull null];
            newArray.push(value);
@@ -518,7 +518,7 @@
    var enumerator = [self objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
        [object setValue:aValue forKey:aKey];
 }
@@ -527,7 +527,7 @@
    var enumerator = [self objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
        [object setValue:aValue forKeyPath:aKeyPath];
 }
@@ -527,10 +527,10 @@ var sortArrayUsingJSDescriptors = function(a, d)
                    key = dd.k;
                    value1 = C1[key];
                    value2 = C2[key];
-                    if (value1 === nil || value1 === cpNull)
+                    if (value1 == nil || value1 === cpNull)
-                        o = value2 === nil || value2 === cpNull ? CPOrderedSame : CPOrderedAscending;
+                        o = value2 == nil || value2 === cpNull ? CPOrderedSame : CPOrderedAscending;
                    else
-                        o = value2 === nil || value2 === cpNull ? CPOrderedDescending : value1.isa.objj_msgSend1(value1, dd.s, value2);
+                        o = value2 == nil || value2 === cpNull ? CPOrderedDescending : value1.isa.objj_msgSend1(value1, dd.s, value2);
                    if (o && !dd.a)
                        o = -o;
@@ -708,7 +708,7 @@ Returns a hash for the object. Unlike Cocoa, the hash value does not take conten
    var count = [self count],
        otherCount = [anArray count];
-    if (anArray === nil || count !== otherCount)
+    if (anArray == nil || count !== otherCount)
        return NO;
    var index = 0;
@@ -82,7 +82,7 @@ var concat = Array.prototype.concat,
        count = arguments.length;
    for (; index < count; ++index)
-        if (arguments[index] === nil)
+        if (arguments[index] == nil)
            break;
    return slice.call(arguments, 2, index);
@@ -141,7 +141,7 @@
 // private method
 - (unsigned)_indexOfEntryWithIndex:(unsigned)anIndex
 {
-    if (anIndex < 0 || anIndex > _string.length || anIndex === undefined)
+    if (anIndex < 0 || anIndex > _string.length || anIndex == nil)
        return CPNotFound;
    // find the range entry that contains anIndex.
@@ -243,7 +243,7 @@ var CPCharacterSetInvertedKey = @"CPCharacterSetInvertedKey";
        enu = [_ranges objectEnumerator],
        range;
-    while ((range = [enu nextObject]) !== nil)
+    while ((range = [enu nextObject]) != nil)
    {
        if (CPLocationInRange(c, range))
            return !_inverted;
@@ -265,7 +265,7 @@ var CPCharacterSetInvertedKey = @"CPCharacterSetInvertedKey";
    var enu = [_ranges objectEnumerator],
        range;
-    while ((range = [enu nextObject]) !== nil)
+    while ((range = [enu nextObject]) != nil)
    {
        if (!CPEmptyRange(range))
            return YES;
@@ -127,7 +127,7 @@ var CPDictionaryMaxDescriptionRecursion = 10;
        var value = object[key];
-        if (value === null)
+        if (value == null)
        {
            [dictionary setObject:[CPNull null] forKey:key];
            continue;
@@ -147,7 +147,7 @@ var CPDictionaryMaxDescriptionRecursion = 10;
                {
                    var thisValue = value[i];
-                    if (thisValue === null)
+                    if (thisValue == null)
                    {
                        newValue.push([CPNull null]);
                    }
@@ -234,10 +234,10 @@ var CPDictionaryMaxDescriptionRecursion = 10;
            var value = objects[i],
                key = keyArray[i];
-            if (value === nil)
+            if (value == nil)
                [CPException raise:CPInvalidArgumentException reason:@"Attempt to insert nil object from objects[" + i + @"]"];
-            if (key === nil)
+            if (key == nil)
                [CPException raise:CPInvalidArgumentException reason:@"Attempt to insert nil key from keys[" + i + @"]"];
            [self setObject:value forKey:key];
@@ -278,10 +278,10 @@ var CPDictionaryMaxDescriptionRecursion = 10;
            var key = arguments[argCount--],
                value = arguments[argCount];
-            if (value === nil)
+            if (value == nil)
                [CPException raise:CPInvalidArgumentException reason:@"Attempt to insert nil object from objects[" + ((argCount / 2) - 1) + @"]"];
-            if (key === nil)
+            if (key == nil)
                [CPException raise:CPInvalidArgumentException reason:@"Attempt to insert nil key from keys[" + ((argCount / 2) - 1) + @"]"];
            [self setObject:value forKey:key];
@@ -593,10 +593,10 @@ var CPDictionaryMaxDescriptionRecursion = 10;
 */
 - (void)setObject:(id)anObject forKey:(id)aKey
 {
-    if (aKey === nil)
+    if (aKey == nil)
        [CPException raise:CPInvalidArgumentException reason:@"key cannot be nil"];
-    if (anObject === nil)
+    if (anObject == nil)
        [CPException raise:CPInvalidArgumentException reason:@"object cannot be nil (key: " + aKey + @")"];
    self.setValueForKey(aKey, anObject);
@@ -650,7 +650,7 @@ var CPDictionaryMaxDescriptionRecursion = 10;
 - (BOOL)containsKey:(id)aKey
 {
    var value = [self objectForKey:aKey];
-    return ((value !== nil) && (value !== undefined));
+    return (value != nil);
 }
 - (void)enumerateKeysAndObjectsUsingBlock:(Function /*(id aKey, id anObject, @ref BOOL stop)*/)aFunction
@@ -730,7 +730,7 @@ var CPDictionaryMaxDescriptionRecursion = 10;
 {
    var key = [_keyEnumerator nextObject];
-    if (key === nil)
+    if (key == nil)
        return nil;
    return [_dictionary objectForKey:key];
@@ -159,7 +159,7 @@
        @deref(aPartialStringRef) = newString;
        // If a new string is passed back, the selection is always put at the end
-        if (newString !== nil)
+        if (newString != nil)
            @deref(aProposedSelectedRangeRef) = CPMakeRange(newString.length, 0);
    }
@@ -151,7 +151,7 @@ var CPObjectAccessorsForClassKey = @"$CPObjectAccessorsForClassKey",
        var key = keys[index],
            value = [self valueForKey:key];
-        if (value === nil)
+        if (value == nil)
            [dictionary setObject:[CPNull null] forKey:key];
        else
@@ -248,7 +248,7 @@ var CPObjectAccessorsForClassKey = @"$CPObjectAccessorsForClassKey",
        key,
        keyEnumerator = [keyedValues keyEnumerator];
-    while ((key = [keyEnumerator nextObject]) !== nil)
+    while ((key = [keyEnumerator nextObject]) != nil)
    {
        value = [keyedValues objectForKey: key];
@@ -286,7 +286,7 @@ var CPObjectAccessorsForClassKey = @"$CPObjectAccessorsForClassKey",
 - (void)setValue:(id)aValue forKey:(CPString)aKey
 {
-    if (aValue !== nil)
+    if (aValue != nil)
        [self setObject:aValue forKey:aKey];
    else
@@ -923,7 +923,7 @@ var kvoNewAndOld        = CPKeyValueObservingOptionNew | CPKeyValueObservingOpti
            {
                var oldValue = [_targetObject valueForKey:aKey];
-                if (oldValue === nil || oldValue === undefined)
+                if (oldValue == nil)
                    oldValue = [CPNull null];
                [changes setObject:oldValue forKey:CPKeyValueChangeOldKey];
@@ -1005,7 +1005,7 @@ var kvoNewAndOld        = CPKeyValueObservingOptionNew | CPKeyValueObservingOpti
            {
                var newValue = [_targetObject valueForKey:aKey];
-                if (newValue === nil || newValue === undefined)
+                if (newValue == nil)
                    newValue = [CPNull null];
                [changes setObject:newValue forKey:CPKeyValueChangeNewKey];
@@ -395,7 +395,7 @@ var _CPKeyedArchiverStringClass                         = Nil,
        keys = [aDictionary keyEnumerator],
        references = @{};
-    while ((key = [keys nextObject]) !== nil)
+    while ((key = [keys nextObject]) != nil)
        [references setObject:_CPKeyedArchiverEncodeObject(self, [aDictionary objectForKey:key], NO) forKey:key];
    [_plistObject setObject:references forKey:aKey];
@@ -471,7 +471,7 @@ var _CPKeyedArchiverEncodeObject = function(self, anObject, isConditional)
    // We wrap primitive JavaScript objects in a unique subclass of CPValue.
    // This way, when we unarchive, we know to unwrap it, since
    // _CPKeyedArchiverValue should not be used anywhere else.
-    if (anObject !== nil && anObject !== undefined && !anObject.isa)
+    if (anObject != nil && !anObject.isa)
        anObject = [_CPKeyedArchiverValue valueWithJSObject:anObject];
    // Get the proper replacement object
@@ -479,8 +479,8 @@ var _CPKeyedArchiverEncodeObject = function(self, anObject, isConditional)
        object = [self._replacementObjects objectForKey:GUID];
    // If a replacement object doesn't exist, then actually ask for one.
-    // Explicitly compare to nil because object could be === 0.
+    // Explicitly compare to nil and undefined because object could be === 0.
-    if (object === nil)
+    if (object == nil)
    {
        object = [anObject replacementObjectForKeyedArchiver:self];
@@ -507,8 +507,8 @@ var _CPKeyedArchiverEncodeObject = function(self, anObject, isConditional)
    // If we still don't have an object by this point, then return a
    // reference to the null object.
-    // Explicitly compare to nil because object could be === 0.
+    // Explicitly compare to nil and undefined because object could be === 0.
-    if (object === nil)
+    if (object == nil)
        return _CPKeyedArchiverNullReference;
    // If not, then grab the object's UID
@@ -517,13 +517,13 @@ var _CPKeyedArchiverEncodeObject = function(self, anObject, isConditional)
    // If this object doesn't have a unique index in the object table yet,
    // then it also hasn't been properly encoded.  We explicitly compare
    // index to nil since it could be 0, which would also evaluate to false.
-    if (UID === nil)
+    if (UID == nil)
    {
        // If it is being conditionally encoded, then
        if (isConditional)
        {
            // If we haven't already noted this conditional object...
-            if ((UID = [self._conditionalUIDs objectForKey:GUID]) === nil)
+            if ((UID = [self._conditionalUIDs objectForKey:GUID]) == nil)
            {
                // Use the null object as a placeholder.
                [self._conditionalUIDs setObject:UID = [self._plistObjects count] forKey:GUID];
@@ -581,7 +581,7 @@ var _CPKeyedArchiverEncodeObject = function(self, anObject, isConditional)
            UID = [self._conditionalUIDs objectForKey:GUID];
            // If this object WAS previously encoded conditionally...
-            if (UID !== nil)
+            if (UID != nil)
            {
                [self._UIDs setObject:UID forKey:GUID];
                [self._plistObjects replaceObjectAtIndex:UID withObject:plistObject];
@@ -253,7 +253,7 @@ var CPArrayClass                                                            = Ni
 {
    var f = [self decodeObjectForKey:aKey];
-    return f === nil ? 0.0 : f;
+    return f == nil ? 0.0 : f;
 }
 /*
@@ -265,7 +265,7 @@ var CPArrayClass                                                            = Ni
 {
    var d = [self decodeObjectForKey:aKey];
-    return d === nil ? 0.0 : d;
+    return d == nil ? 0.0 : d;
 }
 /*
@@ -277,7 +277,7 @@ var CPArrayClass                                                            = Ni
 {
    var i = [self decodeObjectForKey:aKey];
-    return i === nil ? 0 : i;
+    return i == nil ? 0 : i;
 }
 /*
@@ -136,7 +136,7 @@ var CPNotificationDefaultCenter = nil;
    var name = nil,
        names = [_namedRegistries keyEnumerator];
-    while ((name = [names nextObject]) !== nil)
+    while ((name = [names nextObject]) != nil)
        [[_namedRegistries objectForKey:name] removeObserver:anObserver object:nil];
    [_unnamedRegistry removeObserver:anObserver object:nil];
@@ -155,7 +155,7 @@ var CPNotificationDefaultCenter = nil;
        var name = nil,
            names = [_namedRegistries keyEnumerator];
-        while ((name = [names nextObject]) !== nil)
+        while ((name = [names nextObject]) != nil)
            [[_namedRegistries objectForKey:name] removeObserver:anObserver object:anObject];
        [_unnamedRegistry removeObserver:anObserver object:anObject];
@@ -258,13 +258,13 @@ var _CPNotificationCenterPostNotification = function(/* CPNotificationCenter */
            keys = [_objectObservers keyEnumerator];
        // Iterate through every set of observers
-        while ((key = [keys nextObject]) !== nil)
+        while ((key = [keys nextObject]) != nil)
        {
            var observers = [_objectObservers objectForKey:key],
                observer = nil,
                observersEnumerator = [observers objectEnumerator];
-            while ((observer = [observersEnumerator nextObject]) !== nil)
+            while ((observer = [observersEnumerator nextObject]) != nil)
                if ([observer observer] == anObserver ||
                    ([observer block] && [anObserver respondsToSelector:@selector(block)] && [observer block] == [anObserver block]))
                    [observers removeObject:observer];
@@ -280,7 +280,7 @@ var _CPNotificationCenterPostNotification = function(/* CPNotificationCenter */
            observer = nil,
            observersEnumerator = [observers objectEnumerator];
-        while ((observer = [observersEnumerator nextObject]) !== nil)
+        while ((observer = [observersEnumerator nextObject]) != nil)
            if ([observer observer] == anObserver ||
                ([observer block] && [anObserver respondsToSelector:@selector(block)] && [observer block] == [anObserver block]))
                [observers removeObject:observer];
@@ -311,7 +311,7 @@ var _CPNotificationCenterPostNotification = function(/* CPNotificationCenter */
            observer = nil,
            observersEnumerator = [observers objectEnumerator];
-        while ((observer = [observersEnumerator nextObject]) !== nil)
+        while ((observer = [observersEnumerator nextObject]) != nil)
        {
            // CPSet containsObject is N(1) so this is a fast check.
            if ([currentObservers containsObject:observer])
@@ -328,7 +328,7 @@ var _CPNotificationCenterPostNotification = function(/* CPNotificationCenter */
    var observers = [currentObservers copy],
        observersEnumerator = [observers objectEnumerator];
-    while ((observer = [observersEnumerator nextObject]) !== nil)
+    while ((observer = [observersEnumerator nextObject]) != nil)
    {
        // CPSet containsObject is N(1) so this is a fast check.
        if ([currentObservers containsObject:observer])
@@ -314,7 +314,7 @@ FIXME: Do we need this?
 - (CPComparisonResult)compare:(CPNumber)aNumber
 {
-    if (aNumber === nil || aNumber['isa'] === CPNull)
+    if (aNumber == nil || aNumber['isa'] === CPNull)
        [CPException raise:CPInvalidArgumentException reason:"nil argument"];
    if (self > aNumber)
@@ -205,9 +205,9 @@ var NumberRegex = new RegExp('(-)?(\\d*)(\\.(\\d*))?');
    // this will return false if we've received anything but a number, most likely NaN
    if (!isFinite(value))
        error = @"Value is not a number";
-    else if (_minimum !== nil && value < _minimum)
+    else if (_minimum != nil && value < _minimum)
        error = @"Value is less than the minimum allowed value";
-    else if (_maximum !== nil && value > _maximum)
+    else if (_maximum != nil && value > _maximum)
        error = @"Value is greater than the maximum allowed value";
    if (error)
@@ -275,7 +275,7 @@
    if (self === anObject)
        return YES;
-    if (anObject === nil || anObject.isa !== self.isa || _modifier !== [anObject comparisonPredicateModifier] || _type !== [anObject predicateOperatorType] || _options !== [anObject options] || _customSelector !== [anObject customSelector] || ![_left isEqual:[anObject leftExpression]] || ![_right isEqual:[anObject rightExpression]])
+    if (anObject == nil || anObject.isa !== self.isa || _modifier !== [anObject comparisonPredicateModifier] || _type !== [anObject predicateOperatorType] || _options !== [anObject options] || _customSelector !== [anObject customSelector] || ![_left isEqual:[anObject leftExpression]] || ![_right isEqual:[anObject rightExpression]])
        return NO;
    return YES;
@@ -388,7 +388,7 @@
            result = (_modifier == CPAllPredicateModifier),
            value;
-        while ((value = [e nextObject]) !== nil)
+        while ((value = [e nextObject]) != nil)
        {
            var eval = [self _evaluateValue:value rightValue:rightValue];
@@ -215,7 +215,7 @@
    if (self === anObject)
        return YES;
-    if (anObject === nil || anObject.isa !== self.isa || _type !== [anObject compoundPredicateType] || ![_predicates isEqualToArray:[anObject subpredicates]])
+    if (anObject == nil || anObject.isa !== self.isa || _type !== [anObject compoundPredicateType] || ![_predicates isEqualToArray:[anObject subpredicates]])
        return NO;
    return YES;
@@ -43,7 +43,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object collection] isEqual:_aggregate])
+    if (object == nil || object.isa !== self.isa || ![[object collection] isEqual:_aggregate])
        return NO;
    return YES;
@@ -58,7 +58,7 @@
 }
 - (CPString)description
-{    
+{
    var descriptions = [_aggregate arrayByApplyingBlock:function(exp)
    {
        return [exp description];
@@ -45,7 +45,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || [object expressionBlock] !== _block || ![[object arguments] isEqual:_arguments])
+    if (object == nil || object.isa !== self.isa || [object expressionBlock] !== _block || ![[object arguments] isEqual:_arguments])
        return NO;
    return YES;
@@ -47,7 +47,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object predicate] isEqual:_predicate] || ![[object trueExpression] isEqual:_trueExpression] || ![[object falseExpression] isEqual:_falseExpression])
+    if (object == nil || object.isa !== self.isa || ![[object predicate] isEqual:_predicate] || ![[object trueExpression] isEqual:_trueExpression] || ![[object falseExpression] isEqual:_falseExpression])
        return NO;
    return YES;
@@ -45,7 +45,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object constantValue] isEqual:_value])
+    if (object == nil || object.isa !== self.isa || ![[object constantValue] isEqual:_value])
        return NO;
    return YES;
@@ -72,7 +72,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object _function] isEqual:_selector] || ![[object operand] isEqual:_operand] || ![[object arguments] isEqualToArray:_arguments])
+    if (object == nil || object.isa !== self.isa || ![[object _function] isEqual:_selector] || ![[object operand] isEqual:_operand] || ![[object arguments] isEqualToArray:_arguments])
        return NO;
    return YES;
@@ -51,7 +51,7 @@
    if (object === self)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object keyPath] isEqualToString:[self keyPath]])
+    if (object == nil || object.isa !== self.isa || ![[object keyPath] isEqualToString:[self keyPath]])
        return NO;
    return YES;
@@ -190,7 +190,7 @@
    if (self === anObject)
        return YES;
-    if (anObject === nil || self.isa !== anObject.isa || _value !== [anObject evaluateWithObject:nil])
+    if (anObject == nil || self.isa !== anObject.isa || _value !== [anObject evaluateWithObject:nil])
        return NO;
    return YES;
@@ -47,7 +47,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object leftExpression] isEqual:_left] || ![[object rightExpression] isEqual:_right])
+    if (object == nil || object.isa !== self.isa || ![[object leftExpression] isEqual:_left] || ![[object rightExpression] isEqual:_right])
        return NO;
    return YES;
@@ -75,7 +75,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![_collection isEqual:[object collection]] || ![_variableExpression isEqual:[object variableExpression]] || ![_subpredicate isEqual:[object predicate]])
+    if (object == nil || object.isa !== self.isa || ![_collection isEqual:[object collection]] || ![_variableExpression isEqual:[object variableExpression]] || ![_subpredicate isEqual:[object predicate]])
        return NO;
    return YES;
@@ -48,7 +48,7 @@
    if (self === object)
        return YES;
-    if (object === nil || object.isa !== self.isa || ![[object variable] isEqual:_variable])
+    if (object == nil || object.isa !== self.isa || ![[object variable] isEqual:_variable])
        return NO;
    return YES;
@@ -373,7 +373,7 @@ var CPRunLoopLastNativeRunLoop = 0;
        _didAddTimer = NO;
        // Cancel existing window.setTimeout
-        if (_nativeTimersForModes[aMode] !== nil)
+        if (_nativeTimersForModes[aMode] != nil)
        {
            window.clearNativeTimeout(_nativeTimersForModes[aMode]);
@@ -400,7 +400,7 @@ var CPRunLoopLastNativeRunLoop = 0;
            // Timer may or may not still be valid
            if (timer._isValid)
-                nextFireDate = (nextFireDate === nil) ? timer._fireDate : [nextFireDate earlierDate:timer._fireDate];
+                nextFireDate = (nextFireDate == nil) ? timer._fireDate : [nextFireDate earlierDate:timer._fireDate];
            else
            {
@@ -425,7 +425,7 @@ var CPRunLoopLastNativeRunLoop = 0;
                var timer = newTimers[index];
                if ([timer isValid])
-                    nextFireDate = (nextFireDate === nil) ? timer._fireDate : [nextFireDate earlierDate:timer._fireDate];
+                    nextFireDate = (nextFireDate == nil) ? timer._fireDate : [nextFireDate earlierDate:timer._fireDate];
                else
                    newTimers.splice(index, 1);
            }
@@ -438,7 +438,7 @@ var CPRunLoopLastNativeRunLoop = 0;
        _nextTimerFireDatesForModes[aMode] = nextFireDate;
        //initiate a new window.setTimeout if there are any timers
-        if (_nextTimerFireDatesForModes[aMode] !== nil)
+        if (_nextTimerFireDatesForModes[aMode] != nil)
            _nativeTimersForModes[aMode] = window.setNativeTimeout(function()
                {
                    _effectiveDate = nextFireDate;
@@ -221,7 +221,7 @@
        var object,
            objectEnumerator = [objects objectEnumerator];
-        while ((object = [objectEnumerator nextObject]) !== nil)
+        while ((object = [objectEnumerator nextObject]) != nil)
            _add(_proxyObject, _addSEL, object);
    }
    else
@@ -241,7 +241,7 @@
        var object,
            objectEnumerator = [aSet objectEnumerator];
-        while ((object = [objectEnumerator nextObject]) !== nil)
+        while ((object = [objectEnumerator nextObject]) != nil)
            _add(_proxyObject, _addSEL, object);
    }
    else
@@ -278,7 +278,7 @@
        var object,
            objectEnumerator = [aSet objectEnumerator];
-        while ((object = [objectEnumerator nextObject]) !== nil)
+        while ((object = [objectEnumerator nextObject]) != nil)
            _remove(_proxyObject, _removeSEL, object);
    }
    else
@@ -301,7 +301,7 @@
        var object,
            objectEnumerator = [objects objectEnumerator];
-        while ((object = [objectEnumerator nextObject]) !== nil)
+        while ((object = [objectEnumerator nextObject]) != nil)
            _remove(_proxyObject, _removeSEL, object);
    }
    else
@@ -324,7 +324,7 @@
        var object,
            objectEnumerator = [[[self _representedObject] copy] objectEnumerator];
-        while ((object = [objectEnumerator nextObject]) !== nil)
+        while ((object = [objectEnumerator nextObject]) != nil)
            _remove(_proxyObject, _removeSEL, object);
    }
    else
@@ -414,11 +414,11 @@
            containedObjectValue,
            containedObjectEnumerator = [self objectEnumerator];
-        while ((containedObject = [containedObjectEnumerator nextObject]) !== nil)
+        while ((containedObject = [containedObjectEnumerator nextObject]) != nil)
        {
            containedObjectValue = [containedObject valueForKeyPath:aKeyPath];
-            if (containedObjectValue === nil || containedObjectValue === undefined)
+            if (containedObjectValue == nil)
                containedObjectValue = [CPNull null];
            [valuesForKeySet addObject:containedObjectValue];
@@ -433,7 +433,7 @@
    var containedObject,
        containedObjectEnumerator = [self objectEnumerator];
-    while ((containedObject = [containedObjectEnumerator nextObject]) !== nil)
+    while ((containedObject = [containedObjectEnumerator nextObject]) != nil)
        [containedObject setValue:aValue forKey:aKey];
 }
@@ -37,7 +37,7 @@
    var object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if (![aPredicate evaluateWithObject:object])
            [self removeObject:object];
 }
@@ -72,7 +72,7 @@
    var object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        [self removeObject:object];
 }
@@ -97,7 +97,7 @@
    var object,
        objectEnumerator = [aSet objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        [self addObject:object];
 }
@@ -110,7 +110,7 @@
    var object,
        objectEnumerator = [aSet objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        [self removeObject:object];
 }
@@ -124,7 +124,7 @@
        objectEnumerator = [self objectEnumerator],
        objectsToRemove = [];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if (![aSet containsObject:object])
            objectsToRemove.push(object);
@@ -92,7 +92,7 @@ var hasOwnProperty = Object.prototype.hasOwnProperty;
 */
 - (void)addObject:(id)anObject
 {
-    if (anObject === nil || anObject === undefined)
+    if (anObject == nil)
        [CPException raise:CPInvalidArgumentException reason:@"attempt to insert nil or undefined"];
    if ([self containsObject:anObject])
@@ -109,14 +109,14 @@ var hasOwnProperty = Object.prototype.hasOwnProperty;
 - (void)removeObject:(id)anObject
 {
    // Removing nil is an error.
-    if (anObject === nil || anObject === undefined)
+    if (anObject == nil)
        [CPException raise:CPInvalidArgumentException reason:@"attempt to remove nil or undefined"];
    // anObject might be isEqual: another object in the set. We need the exact instance so we can remove it by UID.
    var object = [self member:anObject];
    // ...but removing an object not present in the set is not an error.
-    if (object !== nil)
+    if (object != nil)
    {
        delete _contents[[object UID]];
        _count--;
@@ -224,7 +224,7 @@
        object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        objects.push(object);
    return objects;
@@ -244,7 +244,7 @@
 */
 - (BOOL)containsObject:(id)anObject
 {
-    return [self member:anObject] !== nil;
+    return [self member:anObject] != nil;
 }
 /*!
@@ -257,7 +257,7 @@
        object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if ([aPredicate evaluateWithObject:object])
            objects.push(object);
@@ -294,7 +294,7 @@
        objectEnumerator = [self objectEnumerator],
        argumentsArray = [nil, aSelector].concat(objects || []);
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
    {
        argumentsArray[0] = object;
        objj_msgSend.apply(this, argumentsArray);
@@ -342,7 +342,7 @@
        object = nil,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if (aFunction(object))
            objects.push(object);
@@ -358,7 +358,7 @@
    var object = nil,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if (![aSet containsObject:object])
            return NO;
@@ -378,7 +378,7 @@
    var object = nil,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        if ([aSet containsObject:object])
            return YES;
@@ -477,7 +477,7 @@ var CPSetObjectsKey = @"CPSetObjectsKey";
        object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
    {
        var value = [object valueForKey:aKey];
@@ -492,7 +492,7 @@ var CPSetObjectsKey = @"CPSetObjectsKey";
    var object,
        objectEnumerator = [self objectEnumerator];
-    while ((object = [objectEnumerator nextObject]) !== nil)
+    while ((object = [objectEnumerator nextObject]) != nil)
        [object setValue:aValue forKey:aKey];
 }
@@ -515,7 +515,7 @@ var CPStringNull = [CPNull null];
 */
 - (CPComparisonResult)compare:(CPString)aString options:(int)aMask
 {
-    if (aString === nil)
+    if (aString == nil)
        return CPOrderedDescending;
    if (aString === CPStringNull)
@@ -125,7 +125,7 @@ var CPURLConnectionDelegate = nil;
            key = nil,
            keys = [fields keyEnumerator];
-        while ((key = [keys nextObject]) !== nil)
+        while ((key = [keys nextObject]) != nil)
            aCFHTTPRequest.setRequestHeader(key, [fields objectForKey:key]);
        aCFHTTPRequest.send([aRequest HTTPBody]);
@@ -259,7 +259,7 @@ var CPURLConnectionDelegate = nil;
            key = nil,
            keys = [fields keyEnumerator];
-        while ((key = [keys nextObject]) !== nil)
+        while ((key = [keys nextObject]) != nil)
            _HTTPRequest.setRequestHeader(key, [fields objectForKey:key]);
        _HTTPRequest.send([_request HTTPBody]);
@@ -274,7 +274,7 @@ var CPURLConnectionDelegate = nil;
 {
    if ([_delegate respondsToSelector:@selector(connection:didFailWithError:)])
        [_delegate connection:self didFailWithError:anException];
-    else if (_connectionOperation !== nil)
+    else if (_connectionOperation != nil)
        [self _connectionOperationDidReceiveResponse:nil data:nil error:anException];
 }
@@ -344,7 +344,7 @@ var CPURLConnectionDelegate = nil;
            {
                if ([_delegate respondsToSelector:@selector(connection:didReceiveData:)])
                    [_delegate connection:self didReceiveData:_HTTPRequest.responseText()];
-                else if (_connectionOperation !== nil)
+                else if (_connectionOperation != nil)
                    [self _connectionOperationDidReceiveResponse:response data:_HTTPRequest.responseText() error:nil];
                if ([_delegate respondsToSelector:@selector(connectionDidFinishLoading:)])
@@ -657,7 +657,7 @@ if (_currentGroup == nil)
 */
 - (void)setActionName:(CPString)anActionName
 {
-    if (anActionName !== nil && _currentGrouping)
+    if (anActionName != nil && _currentGrouping)
        [_currentGrouping setActionName:anActionName];
 }
@@ -827,7 +827,7 @@ if (_currentGroup == nil)
    // Don't add no-ops to the undo stack.
    var before = [aChange valueForKey:CPKeyValueChangeOldKey],
        after = [aChange valueForKey:CPKeyValueChangeNewKey];
-    if (before === after || (before !== nil && before.isa && (after === nil || after.isa) && [before isEqual:after]))
+    if (before === after || (before != nil && before.isa && (after == nil || after.isa) && [before isEqual:after]))
        return;
    [[self prepareWithInvocationTarget:anObject]
@@ -342,7 +342,7 @@ var StandardUserDefaults;
    var data = [[self persistentStoreForDomain:aDomain] data],
        domain = data ? [CPKeyedUnarchiver unarchiveObjectWithData:data] : nil;
-    if (domain === nil)
+    if (domain == nil)
        [_domains removeObjectForKey:aDomain];
    else
        [_domains setObject:domain forKey:aDomain];
@@ -438,7 +438,7 @@ var StandardUserDefaults;
 - (float)floatForKey:(CPString)aKey
 {
    var value = [self objectForKey:aKey];
-    if (value === nil)
+    if (value == nil)
        return 0;
    if ([value respondsToSelector:@selector(floatValue)])
@@ -453,7 +453,7 @@ var StandardUserDefaults;
 - (int)integerForKey:(CPString)aKey
 {
    var value = [self objectForKey:aKey];
-    if (value === nil)
+    if (value == nil)
        return 0;
    if ([value respondsToSelector:@selector(intValue)])
@@ -135,7 +135,7 @@ var transformerMap = @{};
 - (id)transformedValue:(id)aValue
 {
-    return aValue === nil || aValue === undefined;
+    return aValue == nil;
 }
@end
@@ -156,7 +156,7 @@ var transformerMap = @{};
 - (id)transformedValue:(id)aValue
 {
-    return aValue !== nil && aValue !== undefined;
+    return aValue != nil;
 }
@end
@@ -45,7 +45,7 @@ var setURLResourceValuesForKeysFromProperties = function(aURL, keys, properties)
    var displayName = [properties objectForKey:@"displayname"];
-    if (displayName !== nil)
+    if (displayName != nil)
    {
        [aURL setResourceValue:displayName forKey:CPURLNameKey];
        [aURL setResourceValue:displayName forKey:CPURLLocalizedNameKey];
@@ -84,7 +84,7 @@ CPWebDAVManagerNonCollectionResourceType    = 0;
            URLString = nil,
            URLStrings = [response keyEnumerator];
-        while ((URLString = [URLStrings nextObject]) !== nil)
+        while ((URLString = [URLStrings nextObject]) != nil)
        {
            var URL = [CPURL URLWithString:URLString],
                properties = [response objectForKey:URLString];
@@ -52,7 +52,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        enumerator = [objects objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
        average += [object doubleValue];
    return average / [objects count];
@@ -72,7 +72,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        min = [enumerator nextObject],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
    {
        if ([min compare:object] > 0)
            min = object;
@@ -95,7 +95,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        max = [enumerator nextObject],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
    {
        if ([max compare:object] < 0)
            max = object;
@@ -114,7 +114,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        enumerator = [objects objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
        sum += [object doubleValue];
    return sum;
@@ -148,7 +148,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        enumerator = [objects objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
    {
        if ([distinctObjects indexOfObject:object] == CPNotFound)
            [distinctObjects addObject:object];
@@ -186,7 +186,7 @@ var _CPCollectionKVCOperatorSimpleRE = new RegExp("^@(avg|count|m(ax|in)|sum|uni
        enumerator = [objects objectEnumerator],
        object;
-    while ((object = [enumerator nextObject]) !== nil)
+    while ((object = [enumerator nextObject]) != nil)
    {
        if ([distinctObjects indexOfObject:object] == CPNotFound)
            [distinctObjects addObject:object];
@@ -229,7 +229,7 @@ DISPLAY_NAME(CFMutableDictionary.prototype.replaceValueForKey);
 CFMutableDictionary.prototype.setValueForKey = function(/*String*/ aKey, /*Object*/ aValue)
 {
-    if (aValue === nil || aValue === undefined)
+    if (aValue == nil)
        this.removeValueForKey(aKey);
    else if (this.containsKey(aKey))
@@ -11,7 +11,7 @@
        notifications = [],
        name;
-    while ((name = [names nextObject]) !== nil)
+    while ((name = [names nextObject]) != nil)
    {
        var notificationRegistry = [defaultCenter._namedRegistries objectForKey:name],
            objectObservers = notificationRegistry._objectObservers,
@@ -19,13 +19,13 @@
            key;
        // Iterate through every set of observers
-        while ((key = [keys nextObject]) !== nil)
+        while ((key = [keys nextObject]) != nil)
        {
            var observers = [objectObservers objectForKey:key],
                observer = nil,
                observersEnumerator = [observers objectEnumerator];
-            while ((observer = [observersEnumerator nextObject]) !== nil)
+            while ((observer = [observersEnumerator nextObject]) != nil)
            {
                if ([observer observer] == anObserver)
                    [notifications addObject:name];