13 changed files with 200 additions and 76 deletions
--- a/Yoga.podspec
+++ b/Yoga.podspec
@@ -5,7 +5,7 @@

 Pod::Spec.new do |spec|
  spec.name = 'Yoga'
-  spec.version = '1.14.0'
+  spec.version = '1.14.1'
  spec.license =  { :type => 'MIT', :file => "LICENSE" }
  spec.homepage = 'https://yogalayout.com/'
  spec.documentation_url = 'https://yogalayout.com/docs'
@@ -34,5 +34,5 @@ Pod::Spec.new do |spec|
  ]
  spec.source_files = 'yoga/**/*.{c,h,cpp}'
  spec.public_header_files = 'yoga/{Yoga,YGEnums,YGMacros,YGNode,YGStyle,YGValue}.h'
-
+  spec.static_framework = true
 end
--- a/YogaKit.podspec
+++ b/YogaKit.podspec
@@ -23,7 +23,7 @@ podspec = Pod::Spec.new do |spec|
  spec.ios.deployment_target = '8.0'
  spec.ios.frameworks = 'UIKit'
  spec.module_name = 'YogaKit'
-  spec.dependency 'Yoga', '~> 1.14'
+  spec.dependency 'Yoga', '~> 1.14.1'
  # Fixes the bug related the xcode 11 not able to find swift related frameworks.
  # https://github.com/Carthage/Carthage/issues/2825
  # https://twitter.com/krzyzanowskim/status/1151549874653081601?s=21
@@ -32,6 +32,7 @@ podspec = Pod::Spec.new do |spec|
  spec.public_header_files = 'YogaKit/Source/{YGLayout,UIView+Yoga}.h'
  spec.private_header_files = 'YogaKit/Source/YGLayout+Private.h'
  spec.swift_version = '5.1'
+  spec.static_framework = true
 end

 # See https://github.com/facebook/yoga/pull/366
--- a/YogaKit/Source/UIView+Yoga.h
+++ b/YogaKit/Source/UIView+Yoga.h
@@ -34,4 +34,9 @@ typedef void (^YGLayoutConfigurationBlock)(YGLayout* layout);

@end

+
+@interface UIView (YogaKitAutoApplyLayout)
+
+@end
+
 NS_ASSUME_NONNULL_END
--- a/YogaKit/Source/UIView+Yoga.m
+++ b/YogaKit/Source/UIView+Yoga.m
@@ -35,3 +35,88 @@ static const void* kYGYogaAssociatedKey = &kYGYogaAssociatedKey;
 }

@end
+
+
+static const void* kYGBoundsSizeAssociatedKey = &kYGBoundsSizeAssociatedKey;
+static void YogaSwizzleInstanceMethod(Class cls, SEL originalSelector, SEL swizzledSelector);
+
+@implementation UIView (YogaKitAutoApplyLayout)
+
+ (void)load {
+    static dispatch_once_t onceToken = 0;
+    dispatch_once(&onceToken, ^{
+        YogaSwizzleInstanceMethod(self, @selector(initWithFrame:), @selector(_yoga_initWithFrame:));
+        YogaSwizzleInstanceMethod(self, @selector(setFrame:), @selector(_yoga_setFrame:));
+        YogaSwizzleInstanceMethod(self, @selector(setBounds:), @selector(_yoga_setBounds:));
+    });
+}
+
+- (CGSize)_yoga_boundsSize {
+    NSValue *value = (NSValue *)objc_getAssociatedObject(self, kYGBoundsSizeAssociatedKey);
+
+    return value ? value.CGSizeValue : CGSizeMake(YGUndefined, YGUndefined);
+}
+
+- (void)set_yoga_boundsSize:(CGSize)size {
+    objc_setAssociatedObject(self,
+                             kYGBoundsSizeAssociatedKey,
+                             [NSValue valueWithCGSize:size],
+                             OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (instancetype)_yoga_initWithFrame:(CGRect)frame {
+    id _self = [self _yoga_initWithFrame:frame];
+    if (_self) {
+        [self _yoga_applyLayout];
+    }
+
+    return _self;
+}
+
+- (void)_yoga_setFrame:(CGRect)frame {
+    [self _yoga_setFrame:frame];
+
+    [self _yoga_applyLayout];
+}
+
+- (void)_yoga_setBounds:(CGRect)bounds {
+    [self _yoga_setBounds:bounds];
+
+    [self _yoga_applyLayout];
+}
+
+- (void)_yoga_applyLayout {
+    if (self.isYogaEnabled && self.yoga.isEnabled) {
+        CGSize size = self.bounds.size;
+        CGSize prev = self._yoga_boundsSize;
+        if (!CGSizeEqualToSize(size, prev)) {
+            self._yoga_boundsSize = size;
+            [self.yoga applyLayoutPreservingOrigin:YES];
+        }
+    }
+}
+
+@end
+
+
+static void YogaSwizzleInstanceMethod(Class cls, SEL originalSelector, SEL swizzledSelector) {
+    if (!cls || !originalSelector || !swizzledSelector) {
+        return;
+    }
+
+    Method originalMethod = class_getInstanceMethod(cls, originalSelector);
+    Method swizzledMethod = class_getInstanceMethod(cls, swizzledSelector);
+    if (!originalMethod || !swizzledMethod) {
+        return;
+    }
+
+    IMP swizzledIMP = method_getImplementation(swizzledMethod);
+    if (class_addMethod(cls, originalSelector, swizzledIMP, method_getTypeEncoding(swizzledMethod))) {
+        class_replaceMethod(cls,
+                            swizzledSelector,
+                            method_getImplementation(originalMethod),
+                            method_getTypeEncoding(originalMethod));
+    } else {
+        method_exchangeImplementations(originalMethod, swizzledMethod);
+    }
+}
--- a/YogaKit/Source/YGLayout.m
+++ b/YogaKit/Source/YGLayout.m
@@ -162,6 +162,7 @@ static YGConfigRef globalConfig;

@property(nonatomic, weak, readonly) UIView* view;
@property(nonatomic, assign, readonly) BOOL isUIView;
+@property(nonatomic, assign) BOOL isApplingLayout;

@end

@@ -292,11 +293,19 @@ YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
 }

 - (void)applyLayout {
+  if (self.isApplingLayout) {
+    return;
+  }
+
  [self calculateLayoutWithSize:self.view.bounds.size];
  YGApplyLayoutToViewHierarchy(self.view, NO);
 }

 - (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin {
+  if (self.isApplingLayout) {
+    return;
+  }
+
  [self calculateLayoutWithSize:self.view.bounds.size];
  YGApplyLayoutToViewHierarchy(self.view, preserveOrigin);
 }
@@ -304,6 +313,10 @@ YG_PROPERTY(CGFloat, aspectRatio, AspectRatio)
 - (void)applyLayoutPreservingOrigin:(BOOL)preserveOrigin
               dimensionFlexibility:
                   (YGDimensionFlexibility)dimensionFlexibility {
+  if (self.isApplingLayout) {
+    return;
+  }
+
  CGSize size = self.view.bounds.size;
  if (dimensionFlexibility & YGDimensionFlexibilityFlexibleWidth) {
    size.width = YGUndefined;
@@ -463,12 +476,22 @@ static void YGApplyLayoutToViewHierarchy(UIView* view, BOOL preserveOrigin) {
      [NSThread isMainThread],
      @"Framesetting should only be done on the main thread.");

+  if (!view.isYogaEnabled || !view.yoga.isEnabled) {
+    return;
+  }
+
  const YGLayout* yoga = view.yoga;

+  if (yoga.isApplingLayout) {
+    return;
+  }
+
  if (!yoga.isIncludedInLayout) {
    return;
  }

+  yoga.isApplingLayout = YES;
+
  YGNodeRef node = yoga.node;
  const CGPoint topLeft = {
      YGNodeLayoutGetLeft(node),
@@ -481,7 +504,7 @@ static void YGApplyLayoutToViewHierarchy(UIView* view, BOOL preserveOrigin) {
  };

  const CGPoint origin = preserveOrigin ? view.frame.origin : CGPointZero;
-  view.frame = (CGRect){
+  CGRect frame = (CGRect){
      .origin =
          {
              .x = YGRoundPixelValue(topLeft.x + origin.x),
@@ -489,18 +512,31 @@ static void YGApplyLayoutToViewHierarchy(UIView* view, BOOL preserveOrigin) {
          },
      .size =
          {
-              .width = YGRoundPixelValue(bottomRight.x) -
-                  YGRoundPixelValue(topLeft.x),
-              .height = YGRoundPixelValue(bottomRight.y) -
-                  YGRoundPixelValue(topLeft.y),
+              .width = MAX(YGRoundPixelValue(bottomRight.x) -
+                  YGRoundPixelValue(topLeft.x), 0),
+              .height = MAX(YGRoundPixelValue(bottomRight.y) -
+                  YGRoundPixelValue(topLeft.y), 0),
          },
  };

+  // use bounds/center and not frame if non-identity transform.
+  view.bounds = (CGRect) {
+    .origin = view.bounds.origin,
+    .size = frame.size
+  };
+
+  view.center = (CGPoint) {
+    .x = YGRoundPixelValue(CGRectGetMinX(frame) + CGRectGetWidth(frame) * 0.5),
+    .y = YGRoundPixelValue(CGRectGetMinY(frame) + CGRectGetHeight(frame) * 0.5)
+  };
+
  if (!yoga.isLeaf) {
    for (NSUInteger i = 0; i < view.subviews.count; i++) {
      YGApplyLayoutToViewHierarchy(view.subviews[i], NO);
    }
  }
+
+  yoga.isApplingLayout = NO;
 }

@end
--- a/YogaKit/YogaKitSample/Podfile
+++ b/YogaKit/YogaKitSample/Podfile
@@ -1,6 +1,8 @@
+platform :ios, '9.0'
 use_frameworks!

 target 'YogaKitSample' do
+  pod 'Yoga', :path => '../../Yoga.podspec'
  pod 'YogaKit', :path => '../../YogaKit.podspec'
-  pod 'IGListKit', '~> 2.1.0'
+  pod 'IGListKit', '~> 4.0.0'
 end
--- a/YogaKit/YogaKitSample/Podfile.lock
+++ b/YogaKit/YogaKitSample/Podfile.lock
@@ -1,26 +1,33 @@
 PODS:
-  - IGListKit (2.1.0):
-    - IGListKit/Default (= 2.1.0)
-  - IGListKit/Default (2.1.0):
-    - IGListKit/Diffing
-  - IGListKit/Diffing (2.1.0)
-  - Yoga (1.7.0)
-  - YogaKit (1.7.0):
-    - Yoga (~> 1.7)
+  - IGListDiffKit (4.0.0)
+  - IGListKit (4.0.0):
+    - IGListDiffKit (= 4.0.0)
+  - Yoga (1.14.1)
+  - YogaKit (1.18.1):
+    - Yoga (~> 1.14.1)

 DEPENDENCIES:
-  - IGListKit (~> 2.1.0)
+  - IGListKit (~> 4.0.0)
+  - Yoga (from `../../Yoga.podspec`)
  - YogaKit (from `../../YogaKit.podspec`)

+SPEC REPOS:
+  trunk:
+    - IGListDiffKit
+    - IGListKit
+
 EXTERNAL SOURCES:
+  Yoga:
+    :path: "../../Yoga.podspec"
  YogaKit:
-    :path: ../../YogaKit.podspec
+    :path: "../../YogaKit.podspec"

 SPEC CHECKSUMS:
-  IGListKit: b826c68ef7a4ae1626c09d4d3e1ea7a169e6c36e
-  Yoga: 2ed1d7accfef3610a67f58c0cf101a0662137f2c
-  YogaKit: 31576530e8fcae3175469719ec3212397403330b
+  IGListDiffKit: 665d6cf43ce726e676013db9c7d6c4294259b6b2
+  IGListKit: fd5a5d21935298f5849fa49d426843cff97b77c7
+  Yoga: 1b62f19e549f5e174fc935ba76a47a8d9b60211e
+  YogaKit: befe87ed72becf4125f290a33af021e9992712c7

-PODFILE CHECKSUM: 216f8e7127767709e0e43f3711208d238fa5c404
+PODFILE CHECKSUM: 31f0f3ccdee77adc2f4b58b4772186c206fd1446

-COCOAPODS: 1.1.1
+COCOAPODS: 1.9.1
--- a/YogaKit/YogaKitSample/YogaKitSample.xcodeproj/project.pbxproj
+++ b/YogaKit/YogaKitSample/YogaKitSample.xcodeproj/project.pbxproj
@@ -1,10 +1,3 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
 // !$*UTF8*$!
 {
 	archiveVersion = 1;
@@ -178,7 +171,6 @@
 				13687D401DF8748300E7C260 /* Frameworks */,
 				13687D411DF8748300E7C260 /* Resources */,
 				FA2FB9DD6471BDD3FBCE503B /* [CP] Embed Pods Frameworks */,
-				6E01EB987F1564F3D71EBE5A /* [CP] Copy Pods Resources */,
 			);
 			buildRules = (
 			);
@@ -233,6 +225,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 				Base,
 			);
@@ -272,28 +265,16 @@
 			files = (
 			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
 			);
 			name = "[CP] Check Pods Manifest.lock";
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-YogaKitSample-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
-			showEnvVarsInLog = 0;
-		};
-		6E01EB987F1564F3D71EBE5A /* [CP] Copy Pods Resources */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-			);
-			name = "[CP] Copy Pods Resources";
-			outputPaths = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-resources.sh\"\n";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
 			showEnvVarsInLog = 0;
 		};
 		FA2FB9DD6471BDD3FBCE503B /* [CP] Embed Pods Frameworks */ = {
@@ -302,13 +283,18 @@
 			files = (
 			);
 			inputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/IGListDiffKit/IGListDiffKit.framework",
+				"${BUILT_PRODUCTS_DIR}/IGListKit/IGListKit.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListDiffKit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListKit.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh\"\n";
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
@@ -446,7 +432,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -461,7 +447,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_INSTALL_OBJC_HEADER = NO;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
--- a/YogaKit/YogaKitSample/YogaKitSample/ExamplesViewController.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/ExamplesViewController.swift
@@ -18,12 +18,12 @@ private final class ExampleModel {
    }
 }

-extension ExampleModel: IGListDiffable {
+extension ExampleModel: ListDiffable {
    fileprivate func diffIdentifier() -> NSObjectProtocol {
        return title as NSString
    }

-    fileprivate func isEqual(toDiffableObject object: IGListDiffable?) -> Bool {
+    fileprivate func isEqual(toDiffableObject object: ListDiffable?) -> Bool {
        guard let otherObj = object as? ExampleModel else { return false }

        return (title == otherObj.title) &&
@@ -31,11 +31,11 @@ extension ExampleModel: IGListDiffable {
    }
 }

-final class ExamplesViewController: UIViewController, IGListAdapterDataSource, IGListSingleSectionControllerDelegate {
-    private lazy var adapter: IGListAdapter = {
-        return IGListAdapter(updater: IGListAdapterUpdater(), viewController: self, workingRangeSize: 0)
+final class ExamplesViewController: UIViewController, ListAdapterDataSource, ListSingleSectionControllerDelegate {
+    private lazy var adapter: ListAdapter = {
+        return ListAdapter(updater: ListAdapterUpdater(), viewController: self, workingRangeSize: 0)
    }()
-    private let collectionView = IGListCollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
+    private let collectionView = ListCollectionView(frame: .zero)


    // Update this to array to create more examples.
@@ -47,6 +47,7 @@ final class ExamplesViewController: UIViewController, IGListAdapterDataSource, I
    override func viewDidLoad() {
        super.viewDidLoad()
        title = "Examples"
+        collectionView.backgroundColor = .clear
        view.addSubview(collectionView)
        adapter.collectionView = collectionView
        adapter.dataSource = self
@@ -59,16 +60,16 @@ final class ExamplesViewController: UIViewController, IGListAdapterDataSource, I

    //MARK: IGListAdapterDataSource

-    func objects(for listAdapter: IGListAdapter) -> [IGListDiffable] {
-        return models as [IGListDiffable]
+    func objects(for listAdapter: ListAdapter) -> [ListDiffable] {
+        return models as [ListDiffable]
    }

-    func listAdapter(_ listAdapter: IGListAdapter, sectionControllerFor object: Any) -> IGListSectionController {
-        let sizeBlock: IGListSingleSectionCellSizeBlock = { (model, context) in
+    func listAdapter(_ listAdapter: ListAdapter, sectionControllerFor object: Any) -> ListSectionController {
+        let sizeBlock: ListSingleSectionCellSizeBlock = { (model, context) in
            return CGSize(width: (context?.containerSize.width)!, height: 75.0)
        }

-        let configureBlock: IGListSingleSectionCellConfigureBlock = { (model, cell) in
+        let configureBlock: ListSingleSectionCellConfigureBlock = { (model, cell) in
            guard let m = model as? ExampleModel, let c = cell as? SingleLabelCollectionCell else {
                return
            }
@@ -76,18 +77,18 @@ final class ExamplesViewController: UIViewController, IGListAdapterDataSource, I
            c.label.text = m.title
        }

-        let sectionController = IGListSingleSectionController(cellClass: SingleLabelCollectionCell.self,
+        let sectionController = ListSingleSectionController(cellClass: SingleLabelCollectionCell.self,
                                                              configureBlock: configureBlock,
                                                              sizeBlock: sizeBlock)
        sectionController.selectionDelegate = self
        return sectionController
    }

-    func emptyView(for listAdapter: IGListAdapter) -> UIView? { return nil }
+    func emptyView(for listAdapter: ListAdapter) -> UIView? { return nil }

    //MARK: IGListSingleSectionControllerDelegate

-    func didSelect(_ sectionController: IGListSingleSectionController) {
+    func didSelect(_ sectionController: ListSingleSectionController, with object: Any) {
        let section = adapter.section(for: sectionController)
        let model = models[section]

--- a/YogaKit/YogaKitSample/YogaKitSample/Info.plist
+++ b/YogaKit/YogaKitSample/YogaKitSample/Info.plist
@@ -32,5 +32,7 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
+	<key>UIUserInterfaceStyle</key>
+	<string>Light</string>
 </dict>
 </plist>
--- a/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/BasicViewController.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/BasicViewController.swift
@@ -32,22 +32,24 @@ final class BasicViewController: UIViewController {
        }
        root.addSubview(child1)

-        let child2 = UIView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
+        let child2 = UIView()
        child2.backgroundColor = .green
        child2.configureLayout { (layout) in
            layout.isEnabled = true
            layout.alignSelf = .flexEnd
+            layout.width = 200
+            layout.height = 200
        }
        root.addSubview(child2)

-        let child3 = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
+        let child3 = UIView()
        child3.backgroundColor = .yellow
        child3.configureLayout { (layout) in
            layout.isEnabled = true
            layout.alignSelf = .flexStart
+            layout.width = 100
+            layout.height = 100
        }
        root.addSubview(child3)
-
-        root.yoga.applyLayout(preservingOrigin: true)
    }
 }
--- a/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift
@@ -51,9 +51,9 @@ final class LayoutInclusionViewController: UIViewController {
        }
        contentView.addSubview(disappearingView)

-        button.setTitle("Add Blue View", for: UIControlState.selected)
-        button.setTitle("Remove Blue View", for: UIControlState.normal)
-        button.addTarget(self, action: #selector(buttonWasTapped), for: UIControlEvents.touchUpInside)
+        button.setTitle("Add Blue View", for: .selected)
+        button.setTitle("Remove Blue View", for: .normal)
+        button.addTarget(self, action: #selector(buttonWasTapped), for: UIControl.Event.touchUpInside)
        button.configureLayout { (layout) in
            layout.isEnabled = true
            layout.height = 300
@@ -61,12 +61,10 @@ final class LayoutInclusionViewController: UIViewController {
            layout.alignSelf = .center
        }
        root.addSubview(button)
-
-        root.yoga.applyLayout(preservingOrigin: false)
    }

    // MARK - UIButton Action
-    func buttonWasTapped() {
+    @objc func buttonWasTapped() {
        button.isSelected = !button.isSelected

        button.isUserInteractionEnabled = false
--- a/YogaKit/YogaKitSample/YogaKitSample/Views/SingleLabelCollectionCell.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/Views/SingleLabelCollectionCell.swift
@@ -42,7 +42,6 @@ final class SingleLabelCollectionCell: UICollectionViewCell {
    override func layoutSubviews() {
        super.layoutSubviews()

-        contentView.yoga.applyLayout(preservingOrigin: false)
        label.frame = contentView.bounds
    }
 }