diff --git a/Examples/UIExplorer/BorderExample.js b/Examples/UIExplorer/BorderExample.js
new file mode 100644
index 000000000..668e77880
--- /dev/null
+++ b/Examples/UIExplorer/BorderExample.js
@@ -0,0 +1,90 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+'use strict';
+
+var React = require('react-native');
+var {
+  StyleSheet,
+  View
+} = React;
+
+var styles = StyleSheet.create({
+  box: {
+    width: 100,
+    height: 100,
+  },
+  border1: {
+    borderWidth: 10,
+    borderColor: 'brown',
+  },
+  borderRadius: {
+    borderWidth: 10,
+    borderRadius: 10,
+    borderColor: 'cyan',
+  },
+  border2: {
+    borderWidth: 10,
+    borderTopColor: 'red',
+    borderRightColor: 'yellow',
+    borderBottomColor: 'green',
+    borderLeftColor: 'blue',
+  },
+  border3: {
+    borderColor: 'purple',
+    borderTopWidth: 10,
+    borderRightWidth: 20,
+    borderBottomWidth: 30,
+    borderLeftWidth: 40,
+  },
+  border4: {
+    borderTopWidth: 10,
+    borderTopColor: 'red',
+    borderRightWidth: 20,
+    borderRightColor: 'yellow',
+    borderBottomWidth: 30,
+    borderBottomColor: 'green',
+    borderLeftWidth: 40,
+    borderLeftColor: 'blue',
+  },
+});
+
+exports.title = 'Border';
+exports.description = 'View borders';
+exports.examples = [
+  {
+    title: 'Equal-Width / Same-Color',
+    description: 'borderWidth & borderColor',
+    render() {
+      return <View style={[styles.box, styles.border1]} />;
+    }
+  },
+  {
+    title: 'Equal-Width / Same-Color',
+    description: 'borderWidth & borderColor',
+    render() {
+      return <View style={[styles.box, styles.borderRadius]} />;
+    }
+  },
+  {
+    title: 'Equal-Width Borders',
+    description: 'borderWidth & border*Color',
+    render() {
+      return <View style={[styles.box, styles.border2]} />;
+    }
+  },
+  {
+    title: 'Same-Color Borders',
+    description: 'border*Width & borderColor',
+    render() {
+      return <View style={[styles.box, styles.border3]} />;
+    }
+  },
+  {
+    title: 'Custom Borders',
+    description: 'border*Width & border*Color',
+    render() {
+      return <View style={[styles.box, styles.border4]} />;
+    }
+  },
+];
diff --git a/Examples/UIExplorer/UIExplorerList.js b/Examples/UIExplorer/UIExplorerList.js
index ce3d6e746..037fb3dcd 100644
--- a/Examples/UIExplorer/UIExplorerList.js
+++ b/Examples/UIExplorer/UIExplorerList.js
@@ -55,6 +55,7 @@ var APIS = [
   require('./AlertIOSExample'),
   require('./AppStateIOSExample'),
   require('./AsyncStorageExample'),
+  require('./BorderExample'),
   require('./CameraRollExample.ios'),
   require('./GeolocationExample'),
   require('./LayoutExample'),
diff --git a/ReactKit/Modules/RCTUIManager.m b/ReactKit/Modules/RCTUIManager.m
index 8c3274910..d8645d612 100644
--- a/ReactKit/Modules/RCTUIManager.m
+++ b/ReactKit/Modules/RCTUIManager.m
@@ -437,9 +437,6 @@ static NSString *RCTViewNameForModuleName(NSString *moduleName)
         completion(YES);
       }
 
-      // TODO: deprecate this
-      [view reactSetBorders];
-
       // Animate view creation
       BOOL shouldAnimateCreation = isNew && ![parentsAreNew[ii] boolValue];
       RCTAnimation *createAnimation = _layoutAnimation.createAnimation;
diff --git a/ReactKit/Views/RCTTabBarItemManager.m b/ReactKit/Views/RCTTabBarItemManager.m
index 227a4ef40..7f4ce9642 100644
--- a/ReactKit/Views/RCTTabBarItemManager.m
+++ b/ReactKit/Views/RCTTabBarItemManager.m
@@ -21,7 +21,7 @@
 
 RCT_EXPORT_VIEW_PROPERTY(selected, BOOL);
 RCT_EXPORT_VIEW_PROPERTY(icon, NSString);
-RCT_REMAP_VIEW_PROPERTY(selectedIcon, barItem.selectedImage, NSString);
+RCT_REMAP_VIEW_PROPERTY(selectedIcon, barItem.selectedImage, UIImage);
 RCT_REMAP_VIEW_PROPERTY(badgeValue, barItem.badgeValue, NSString);
 RCT_CUSTOM_VIEW_PROPERTY(title, NSString, RCTTabBarItem)
 {
diff --git a/ReactKit/Views/RCTView.h b/ReactKit/Views/RCTView.h
index 4d99c876f..73fe2c7cb 100644
--- a/ReactKit/Views/RCTView.h
+++ b/ReactKit/Views/RCTView.h
@@ -13,6 +13,13 @@
 
 #import "RCTPointerEvents.h"
 
+typedef NS_ENUM(NSInteger, RCTBorderSide) {
+  RCTBorderSideTop,
+  RCTBorderSideRight,
+  RCTBorderSideBottom,
+  RCTBorderSideLeft
+};
+
 @protocol RCTAutoInsetsProtocol;
 
 @interface RCTView : UIView
@@ -48,4 +55,22 @@
  */
 - (void)updateClippedSubviews;
 
+/**
+ * Border colors.
+ */
+@property (nonatomic, assign) CGColorRef borderTopColor;
+@property (nonatomic, assign) CGColorRef borderRightColor;
+@property (nonatomic, assign) CGColorRef borderBottomColor;
+@property (nonatomic, assign) CGColorRef borderLeftColor;
+@property (nonatomic, assign) CGColorRef borderColor;
+
+/**
+ * Border widths.
+ */
+@property (nonatomic, assign) CGFloat borderTopWidth;
+@property (nonatomic, assign) CGFloat borderRightWidth;
+@property (nonatomic, assign) CGFloat borderBottomWidth;
+@property (nonatomic, assign) CGFloat borderLeftWidth;
+@property (nonatomic, assign) CGFloat borderWidth;
+
 @end
diff --git a/ReactKit/Views/RCTView.m b/ReactKit/Views/RCTView.m
index 5bb13ab86..7d4d12aac 100644
--- a/ReactKit/Views/RCTView.m
+++ b/ReactKit/Views/RCTView.m
@@ -14,6 +14,8 @@
 #import "RCTLog.h"
 #import "UIView+ReactKit.h"
 
+static const RCTBorderSide RCTBorderSideCount = 4;
+
 @implementation UIView (RCTViewUnmounting)
 
 - (void)react_remountAllSubviews
@@ -91,6 +93,8 @@ static NSString *RCTRecursiveAccessibilityLabel(UIView *view)
 @implementation RCTView
 {
   NSMutableArray *_reactSubviews;
+  CAShapeLayer *_borderLayers[RCTBorderSideCount];
+  CGFloat _borderWidths[RCTBorderSideCount];
 }
 
 - (NSString *)accessibilityLabel
@@ -106,7 +110,7 @@ static NSString *RCTRecursiveAccessibilityLabel(UIView *view)
   _pointerEvents = pointerEvents;
   self.userInteractionEnabled = (pointerEvents != RCTPointerEventsNone);
   if (pointerEvents == RCTPointerEventsBoxNone) {
-    self.accessibilityViewIsModal = NO; // TODO: find out what this is for
+    self.accessibilityViewIsModal = NO;
   }
 }
 
@@ -368,9 +372,193 @@ static NSString *RCTRecursiveAccessibilityLabel(UIView *view)
   // to updateClippedSubviews manually after loading
 
   [super layoutSubviews];
+
   if (_reactSubviews) {
     [self updateClippedSubviews];
   }
+
+  for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+    if (_borderLayers[side]) [self updatePathForShapeLayerForSide:side];
+  }
+}
+
+- (void)layoutSublayersOfLayer:(CALayer *)layer
+{
+  [super layoutSublayersOfLayer:layer];
+
+  const CGRect bounds = layer.bounds;
+  for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+    _borderLayers[side].frame = bounds;
+  }
+}
+
+- (BOOL)getTrapezoidPoints:(CGPoint[4])outPoints forSide:(RCTBorderSide)side
+{
+  const CGRect bounds = self.layer.bounds;
+  const CGFloat minX = CGRectGetMinX(bounds);
+  const CGFloat maxX = CGRectGetMaxX(bounds);
+  const CGFloat minY = CGRectGetMinY(bounds);
+  const CGFloat maxY = CGRectGetMaxY(bounds);
+
+#define BW(SIDE) [self borderWidthForSide:RCTBorderSide##SIDE]
+
+  switch (side) {
+    case RCTBorderSideRight:
+      outPoints[0] = CGPointMake(maxX - BW(Right), maxY - BW(Bottom));
+      outPoints[1] = CGPointMake(maxX - BW(Right), minY + BW(Top));
+      outPoints[2] = CGPointMake(maxX, minY);
+      outPoints[3] = CGPointMake(maxX, maxY);
+      break;
+    case RCTBorderSideBottom:
+      outPoints[0] = CGPointMake(minX + BW(Left), maxY - BW(Bottom));
+      outPoints[1] = CGPointMake(maxX - BW(Right), maxY - BW(Bottom));
+      outPoints[2] = CGPointMake(maxX, maxY);
+      outPoints[3] = CGPointMake(minX, maxY);
+      break;
+    case RCTBorderSideLeft:
+      outPoints[0] = CGPointMake(minX + BW(Left), minY + BW(Top));
+      outPoints[1] = CGPointMake(minX + BW(Left), maxY - BW(Bottom));
+      outPoints[2] = CGPointMake(minX, maxY);
+      outPoints[3] = CGPointMake(minX, minY);
+      break;
+    case RCTBorderSideTop:
+      outPoints[0] = CGPointMake(maxX - BW(Right), minY + BW(Top));
+      outPoints[1] = CGPointMake(minX + BW(Left), minY + BW(Top));
+      outPoints[2] = CGPointMake(minX, minY);
+      outPoints[3] = CGPointMake(maxX, minY);
+      break;
+  }
+
+  return YES;
+}
+
+- (CAShapeLayer *)createShapeLayerIfNotExistsForSide:(RCTBorderSide)side
+{
+  CAShapeLayer *borderLayer = _borderLayers[side];
+  if (!borderLayer) {
+    borderLayer = [CAShapeLayer layer];
+    borderLayer.fillColor = self.layer.borderColor;
+    [self.layer addSublayer:borderLayer];
+    _borderLayers[side] = borderLayer;
+  }
+  return borderLayer;
+}
+
+- (void)updatePathForShapeLayerForSide:(RCTBorderSide)side
+{
+  CAShapeLayer *borderLayer = [self createShapeLayerIfNotExistsForSide:side];
+
+  CGPoint trapezoidPoints[4];
+  [self getTrapezoidPoints:trapezoidPoints forSide:side];
+
+  CGMutablePathRef path = CGPathCreateMutable();
+  CGPathAddLines(path, NULL, trapezoidPoints, 4);
+  CGPathCloseSubpath(path);
+  borderLayer.path = path;
+  CGPathRelease(path);
+}
+
+- (void)updateBorderLayers
+{
+  BOOL widthsAndColorsSame = YES;
+  CGFloat width = _borderWidths[0];
+  CGColorRef color = _borderLayers[0].fillColor;
+  for (RCTBorderSide side = 1; side < RCTBorderSideCount; side++) {
+    CAShapeLayer *layer = _borderLayers[side];
+    if (_borderWidths[side] != width || (layer && !CGColorEqualToColor(layer.fillColor, color))) {
+      widthsAndColorsSame = NO;
+      break;
+    }
+  }
+  if (widthsAndColorsSame) {
+
+    // Set main layer border
+    if (width) {
+      _borderWidth = self.layer.borderWidth = width;
+    }
+    if (color) {
+      self.layer.borderColor = color;
+    }
+
+    // Remove border layers
+    for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+      [_borderLayers[side] removeFromSuperlayer];
+      _borderLayers[side] = nil;
+    }
+
+  } else {
+
+    // Clear main layer border
+    self.layer.borderWidth = 0;
+
+    // Set up border layers
+    for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+      [self updatePathForShapeLayerForSide:side];
+    }
+  }
+}
+
+- (CGFloat)borderWidthForSide:(RCTBorderSide)side
+{
+  return _borderWidths[side] ?: _borderWidth;
+}
+
+- (void)setBorderWidth:(CGFloat)width forSide:(RCTBorderSide)side
+{
+  _borderWidths[side] = width;
+  [self updateBorderLayers];
+}
+
+#define BORDER_WIDTH(SIDE) \
+- (CGFloat)border##SIDE##Width { return [self borderWidthForSide:RCTBorderSide##SIDE]; } \
+- (void)setBorder##SIDE##Width:(CGFloat)width { [self setBorderWidth:width forSide:RCTBorderSide##SIDE]; }
+
+BORDER_WIDTH(Top)
+BORDER_WIDTH(Right)
+BORDER_WIDTH(Bottom)
+BORDER_WIDTH(Left)
+
+- (CGColorRef)borderColorForSide:(RCTBorderSide)side
+{
+  return _borderLayers[side].fillColor ?: self.layer.borderColor;
+}
+
+- (void)setBorderColor:(CGColorRef)color forSide:(RCTBorderSide)side
+{
+  [self createShapeLayerIfNotExistsForSide:side].fillColor = color;
+  [self updateBorderLayers];
+}
+
+#define BORDER_COLOR(SIDE) \
+- (CGColorRef)border##SIDE##Color { return [self borderColorForSide:RCTBorderSide##SIDE]; } \
+- (void)setBorder##SIDE##Color:(CGColorRef)color { [self setBorderColor:color forSide:RCTBorderSide##SIDE]; }
+
+BORDER_COLOR(Top)
+BORDER_COLOR(Right)
+BORDER_COLOR(Bottom)
+BORDER_COLOR(Left)
+
+- (void)setBorderWidth:(CGFloat)borderWidth
+{
+  _borderWidth = borderWidth;
+  for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+    _borderWidths[side] = borderWidth;
+  }
+  [self updateBorderLayers];
+}
+
+- (void)setBorderColor:(CGColorRef)borderColor
+{
+  self.layer.borderColor = borderColor;
+  for (RCTBorderSide side = 0; side < RCTBorderSideCount; side++) {
+    _borderLayers[side].fillColor = borderColor;
+  }
+  [self updateBorderLayers];
+}
+
+- (CGColorRef)borderColor
+{
+  return self.layer.borderColor;
 }
 
 @end
diff --git a/ReactKit/Views/RCTViewManager.m b/ReactKit/Views/RCTViewManager.m
index 943a8e43c..79a9c22da 100644
--- a/ReactKit/Views/RCTViewManager.m
+++ b/ReactKit/Views/RCTViewManager.m
@@ -81,9 +81,6 @@ RCT_REMAP_VIEW_PROPERTY(shadowColor, layer.shadowColor, CGColor);
 RCT_REMAP_VIEW_PROPERTY(shadowOffset, layer.shadowOffset, CGSize);
 RCT_REMAP_VIEW_PROPERTY(shadowOpacity, layer.shadowOpacity, CGFloat)
 RCT_REMAP_VIEW_PROPERTY(shadowRadius, layer.shadowRadius, CGFloat)
-RCT_REMAP_VIEW_PROPERTY(borderColor, layer.borderColor, CGColor);
-RCT_REMAP_VIEW_PROPERTY(borderRadius, layer.cornerRadius, CGFloat)
-RCT_REMAP_VIEW_PROPERTY(borderWidth, layer.borderWidth, CGFloat)
 RCT_REMAP_VIEW_PROPERTY(transformMatrix, layer.transform, CATransform3D)
 RCT_CUSTOM_VIEW_PROPERTY(overflow, css_overflow, RCTView)
 {
@@ -122,6 +119,42 @@ RCT_CUSTOM_VIEW_PROPERTY(removeClippedSubviews, BOOL, RCTView)
     view.removeClippedSubviews = json ? [RCTConvert BOOL:json] : defaultView.removeClippedSubviews;
   }
 }
+RCT_REMAP_VIEW_PROPERTY(borderRadius, layer.cornerRadius, CGFloat)
+RCT_CUSTOM_VIEW_PROPERTY(borderColor, CGColor, RCTView)
+{
+  if ([view respondsToSelector:@selector(setBorderColor:)]) {
+    view.borderColor = json ? [RCTConvert CGColor:json] : defaultView.borderColor;
+  } else {
+    view.layer.borderColor = json ? [RCTConvert CGColor:json] : defaultView.layer.borderColor;
+  }
+}
+RCT_CUSTOM_VIEW_PROPERTY(borderWidth, CGFloat, RCTView)
+{
+  if ([view respondsToSelector:@selector(setBorderWidth:)]) {
+    view.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.borderWidth;
+  } else {
+    view.layer.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.layer.borderWidth;
+  }
+}
+
+#define RCT_VIEW_BORDER_PROPERTY(SIDE)                                  \
+RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Width, CGFloat, RCTView)         \
+{                                                                       \
+  if ([view respondsToSelector:@selector(setBorder##SIDE##Width:)]) {   \
+    view.border##SIDE##Width = json ? [RCTConvert CGFloat:json] : defaultView.border##SIDE##Width; \
+  }                                                                     \
+}                                                                       \
+RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Color, UIColor, RCTView)         \
+{                                                                       \
+  if ([view respondsToSelector:@selector(setBorder##SIDE##Color:)]) {   \
+    view.border##SIDE##Color = json ? [RCTConvert CGColor:json] : defaultView.border##SIDE##Color; \
+  }                                                                     \
+}
+
+RCT_VIEW_BORDER_PROPERTY(Top)
+RCT_VIEW_BORDER_PROPERTY(Right)
+RCT_VIEW_BORDER_PROPERTY(Bottom)
+RCT_VIEW_BORDER_PROPERTY(Left)
 
 #pragma mark - ShadowView properties
 
@@ -169,15 +202,4 @@ RCT_CUSTOM_SHADOW_PROPERTY(backgroundColor, UIColor, RCTShadowView)
   view.isBGColorExplicitlySet = json ? YES : defaultView.isBGColorExplicitlySet;
 }
 
-// Border properties - to be deprecated
-
-RCT_REMAP_VIEW_PROPERTY(borderTopWidth, reactBorderTop.width, CGFloat);
-RCT_REMAP_VIEW_PROPERTY(borderRightWidth, reactBorderRight.width, CGFloat);
-RCT_REMAP_VIEW_PROPERTY(borderBottomWidth, reactBorderBottom.width, CGFloat);
-RCT_REMAP_VIEW_PROPERTY(borderLeftWidth, reactBorderLeft.width, CGFloat);
-RCT_REMAP_VIEW_PROPERTY(borderTopColor, reactBorderTop.color, UIColor);
-RCT_REMAP_VIEW_PROPERTY(borderRightColor, reactBorderRight.color, UIColor);
-RCT_REMAP_VIEW_PROPERTY(borderBottomColor, reactBorderBottom.color, UIColor);
-RCT_REMAP_VIEW_PROPERTY(borderLeftColor, reactBorderLeft.color, UIColor);
-
 @end
diff --git a/ReactKit/Views/UIView+ReactKit.h b/ReactKit/Views/UIView+ReactKit.h
index b2ba2ca9a..ab978e58d 100644
--- a/ReactKit/Views/UIView+ReactKit.h
+++ b/ReactKit/Views/UIView+ReactKit.h
@@ -42,12 +42,3 @@
 - (BOOL)reactRespondsToTouch:(UITouch *)touch;
 
 @end
-
-@interface UIView (ReactKitBorders)
-
-/**
- * Borders stuff - pay no attention to this, it's going away (#6548297)
- */
-- (void)reactSetBorders;
-
-@end
diff --git a/ReactKit/Views/UIView+ReactKit.m b/ReactKit/Views/UIView+ReactKit.m
index 2ef2ce31b..0ea1df053 100644
--- a/ReactKit/Views/UIView+ReactKit.m
+++ b/ReactKit/Views/UIView+ReactKit.m
@@ -119,156 +119,3 @@
 }
 
 @end
-
-#pragma mark - Borders
-
-// Note: the value of this enum determines their relative zPosition
-typedef NS_ENUM(NSUInteger, RCTBorderSide) {
-  RCTBorderSideTop = 0,
-  RCTBorderSideRight = 1,
-  RCTBorderSideBottom = 2,
-  RCTBorderSideLeft = 3
-};
-
-@interface RCTSingleSidedBorder : NSObject
-
-@property (nonatomic, readwrite, assign) CGFloat width;
-@property (nonatomic, readwrite, strong) UIColor *color;
-@property (nonatomic, readonly, assign) RCTBorderSide side;
-
-- (instancetype)initWithSide:(RCTBorderSide)side superlayer:(CALayer *)superlayer;
-
-- (void)superLayerBoundsDidChange;
-
-@end
-
-@implementation RCTSingleSidedBorder
-{
-  CALayer *_borderLayer;
-}
-
-- (instancetype)initWithSide:(RCTBorderSide)side superlayer:(CALayer *)superlayer
-{
-  if (self = [super init]) {
-    _side = side;
-
-    _borderLayer = [CALayer layer];
-    _borderLayer.delegate = self;
-    _borderLayer.zPosition = INT_MAX - _side;
-
-    [superlayer insertSublayer:_borderLayer atIndex:0];
-  }
-  return self;
-}
-
-- (void)dealloc
-{
-  _borderLayer.delegate = nil;
-}
-
-- (void)setWidth:(CGFloat)width
-{
-  _width = width;
-  [_borderLayer setNeedsLayout];
-}
-
-- (void)setColor:(UIColor *)color
-{
-  _color = color;
-  _borderLayer.backgroundColor = _color.CGColor;
-  [_borderLayer setNeedsLayout];
-}
-
-- (void)superLayerBoundsDidChange
-{
-  [_borderLayer setNeedsLayout];
-}
-
-#pragma mark - CALayerDelegate
-
-- (void)layoutSublayersOfLayer:(CALayer *)layer
-{
-  CGSize superlayerSize = layer.superlayer.frame.size;
-
-  CGFloat xPosition = 0.0f;
-  CGFloat yPosition = 0.0f;
-
-  // Note: we ensure side layers are below top & bottom for snapshot test consistency
-
-  switch (self.side) {
-    case RCTBorderSideTop:
-      layer.frame = CGRectMake(xPosition, yPosition, superlayerSize.width, self.width);
-      break;
-    case RCTBorderSideRight:
-      xPosition = superlayerSize.width - self.width;
-      layer.frame = CGRectMake(xPosition, yPosition, self.width, superlayerSize.height);
-      [layer.superlayer insertSublayer:layer atIndex:0];
-      break;
-    case RCTBorderSideBottom:
-      yPosition = superlayerSize.height - self.width;
-      layer.frame = CGRectMake(xPosition, yPosition, superlayerSize.width, self.width);
-      break;
-    case RCTBorderSideLeft:
-      layer.frame = CGRectMake(xPosition, yPosition, self.width, superlayerSize.height);
-      [layer.superlayer insertSublayer:layer atIndex:0];
-      break;
-  }
-}
-
-// Disable animations for layer
-- (id<CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)event
-{
-  return (id)[NSNull null];
-}
-
-@end
-
-@implementation UIView (ReactKitBorders)
-
-- (void)reactSetBorders
-{
-  NSMutableDictionary *borders = objc_getAssociatedObject(self, @selector(_createOrGetBorderWithSide:));
-  if (borders) {
-    for (RCTSingleSidedBorder *border in [borders allValues]) {
-      [border superLayerBoundsDidChange];
-    }
-  }
-}
-
-- (RCTSingleSidedBorder *)reactBorderTop
-{
-  return [self _createOrGetBorderWithSide:RCTBorderSideTop];
-}
-
-- (RCTSingleSidedBorder *)reactBorderRight
-{
-  return [self _createOrGetBorderWithSide:RCTBorderSideRight];
-}
-
-- (RCTSingleSidedBorder *)reactBorderBottom
-{
-  return [self _createOrGetBorderWithSide:RCTBorderSideBottom];
-}
-
-- (RCTSingleSidedBorder *)reactBorderLeft
-{
-  return [self _createOrGetBorderWithSide:RCTBorderSideLeft];
-}
-
-- (RCTSingleSidedBorder *)_createOrGetBorderWithSide:(RCTBorderSide)side
-{
-  NSMutableDictionary *borders = objc_getAssociatedObject(self, _cmd);
-  if (!borders) {
-    borders = [[NSMutableDictionary alloc] init];
-    objc_setAssociatedObject(self, _cmd, borders, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-  }
-
-  RCTSingleSidedBorder *border = [borders objectForKey:@(side)];
-  if (!border) {
-    border = [[RCTSingleSidedBorder alloc] initWithSide:side superlayer:self.layer];
-    [borders setObject:border forKey:@(side)];
-  }
-  return border;
-}
-
-@end