10 changed files with 110 additions and 98 deletions
--- a/.github/workflows/validate-apple.yml
+++ b/.github/workflows/validate-apple.yml
@@ -9,7 +9,7 @@ on:

 jobs:
  lint-pods:
-    name: Lint
+    name: Lint pod
    runs-on: macos-latest

    steps:
@@ -18,12 +18,11 @@ jobs:
      - name: Setup
        uses: ./.github/actions/setup-apple

-      - name: pod spec lint
-        run: pod spec lint --verbose
-        continue-on-error: true # Apple Build is Broken
+      - name: pod lib lint
+        run: pod lib lint --verbose --include-podspecs=**/*.podspec

  build-sample:
-    name: Build [${{ matrix.mode }}]
+    name: Build sample [${{ matrix.mode }}]
    runs-on: macos-latest
    strategy:
      matrix:
@@ -38,9 +37,10 @@ jobs:
      - name: pod install
        run: pod install
        working-directory: ./YogaKit/YogaKitSample
-        continue-on-error: true # Apple Build is Broken

-      # TODO: xcodebuild
+      - name: xcodebuild YogaKitSample.xcworkspace
+        run: xcodebuild -workspace YogaKitSample.xcworkspace -scheme YogaKitSample
+        working-directory: ./YogaKit/YogaKitSample

  clang-format:
    name: Format
--- a/Yoga.podspec
+++ b/Yoga.podspec
@@ -6,7 +6,7 @@

 Pod::Spec.new do |spec|
  spec.name = 'Yoga'
-  spec.version = '1.14.0'
+  spec.version = '2.0.0-beta.1'
  spec.license =  { :type => 'MIT', :file => "LICENSE" }
  spec.homepage = 'https://yogalayout.com/'
  spec.documentation_url = 'https://yogalayout.com/docs'
@@ -17,9 +17,11 @@ Pod::Spec.new do |spec|
  spec.authors = 'Facebook'
  spec.source = {
    :git => 'https://github.com/facebook/yoga.git',
-    :tag => spec.version.to_s,
+    :tag => "v#{spec.version.to_s}",
  }
-  spec.platforms = { :ios => "8.0", :osx => "10.7", :tvos => "10.0", :watchos => "2.0" }
+
+  spec.ios.deployment_target = "13.4"
+
  spec.module_name = 'yoga'
  spec.requires_arc = false
  spec.pod_target_xcconfig = {
@@ -36,5 +38,5 @@ Pod::Spec.new do |spec|
  ]
  spec.source_files = 'yoga/**/*.{h,cpp}'
  spec.public_header_files = 'yoga/{Yoga,YGEnums,YGMacros,YGValue}.h'
-
+  spec.swift_version = '5.1'
 end
--- a/YogaKit.podspec
+++ b/YogaKit.podspec
@@ -5,7 +5,7 @@

 podspec = Pod::Spec.new do |spec|
  spec.name = 'YogaKit'
-  spec.version = '1.18.1'
+  spec.version = '2.0.0-beta.1'
  spec.license =  { :type => 'MIT', :file => "LICENSE" }
  spec.homepage = 'https://facebook.github.io/yoga/'
  spec.documentation_url = 'https://facebook.github.io/yoga/docs/'
@@ -16,18 +16,13 @@ podspec = Pod::Spec.new do |spec|
  spec.authors = 'Facebook'
  spec.source = {
    :git => 'https://github.com/facebook/yoga.git',
-    :tag => "1.18.0",
+    :tag => "v#{spec.version.to_s}",
  }

-  spec.platform = :ios
-  spec.ios.deployment_target = '8.0'
+  spec.platforms = { :ios => "13.4" }
  spec.ios.frameworks = 'UIKit'
  spec.module_name = 'YogaKit'
-  spec.dependency 'Yoga', '~> 1.14'
-  # 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
-  spec.pod_target_xcconfig = {"LD_VERIFY_BITCODE": "NO"}
+  spec.dependency 'Yoga', "~> #{spec.version.to_s}"
  spec.source_files = 'YogaKit/Source/*.{h,m,swift}'
  spec.public_header_files = 'YogaKit/Source/{YGLayout,UIView+Yoga}.h'
  spec.private_header_files = 'YogaKit/Source/YGLayout+Private.h'
--- a/YogaKit/.swift-version
+++ b/YogaKit/.swift-version
@@ -1 +0,0 @@
-3.0.2
--- a/YogaKit/YogaKitSample/Podfile
+++ b/YogaKit/YogaKitSample/Podfile
@@ -1,6 +1,17 @@
 use_frameworks!

+platform :ios, "13.4"
+
 target 'YogaKitSample' do
  pod 'YogaKit', :path => '../../YogaKit.podspec'
-  pod 'IGListKit', '~> 2.1.0'
+  pod 'Yoga', :path => '../../Yoga.podspec'
+  pod 'IGListKit', '~> 4.0.0'
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.4'
+    end
+  end
 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 (2.0.0-beta.1)
+  - YogaKit (2.0.0-beta.1):
+    - Yoga (~> 2.0.0-beta.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: 090c6851e548d085d6211b5466b57ba8f4013a90
+  YogaKit: 5ae1939cd7516fdf6c343abb4b4aa381c9911ccf

-PODFILE CHECKSUM: 216f8e7127767709e0e43f3711208d238fa5c404
+PODFILE CHECKSUM: e5d9841ef739884db00a29f2d529d16bf247a4ca

-COCOAPODS: 1.1.1
+COCOAPODS: 1.12.1
--- 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 = (
 			);
@@ -272,28 +264,16 @@
 			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 +282,22 @@
 			files = (
 			);
 			inputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/IGListDiffKit/IGListDiffKit.framework",
+				"${BUILT_PRODUCTS_DIR}/IGListKit/IGListKit.framework",
+				"${BUILT_PRODUCTS_DIR}/Yoga/yoga.framework",
+				"${BUILT_PRODUCTS_DIR}/YogaKit/YogaKit.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListDiffKit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/IGListKit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/yoga.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/YogaKit.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh\"\n";
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-YogaKitSample/Pods-YogaKitSample-frameworks.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
@@ -366,7 +355,7 @@
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGNING_ALLOWED = NO;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -385,7 +374,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -414,7 +403,7 @@
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
-				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				CODE_SIGNING_ALLOWED = NO;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
@@ -427,7 +416,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.1;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
@@ -446,7 +435,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_INSTALL_OBJC_HEADER = NO;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.1;
 			};
 			name = Debug;
 		};
@@ -461,7 +450,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_INSTALL_OBJC_HEADER = NO;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.1;
 			};
 			name = Release;
 		};
@@ -471,7 +460,7 @@
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				INFOPLIST_FILE = YogaKitSampleTests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSampleTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -485,7 +474,7 @@
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				INFOPLIST_FILE = YogaKitSampleTests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.4;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.facebook.YogaKitSampleTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
--- 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) &&
@@ -31,12 +31,16 @@ extension ExampleModel: IGListDiffable {
    }
 }

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

+    private lazy var adapter: ListAdapter = {
+        return ListAdapter(updater: ListAdapterUpdater(), viewController: self, workingRangeSize: 0)
+    }()
+    private lazy var collectionView: UICollectionView = {
+        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: UICollectionViewFlowLayout())
+        collectionView.backgroundColor = UIColor.systemBackground
+        return collectionView
+    }()

    // Update this to array to create more examples.
    private let models: [ExampleModel] = [ExampleModel(title: "Basic Layout", controllerClass: BasicViewController.self),
@@ -59,16 +63,16 @@ 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 +80,17 @@ 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/ViewControllers/BasicViewController.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/BasicViewController.swift
@@ -10,11 +10,11 @@ import YogaKit

 final class BasicViewController: UIViewController {
    override func viewDidLoad() {
+        super.viewDidLoad()
        let containerSize = self.view.bounds.size

-        let root = self.view!
-        root.backgroundColor = .white
-        root.configureLayout { (layout) in
+        view.backgroundColor = UIColor.systemBackground
+        view.configureLayout { (layout) in
            layout.isEnabled = true
            layout.width = YGValue(containerSize.width)
            layout.height = YGValue(containerSize.height)
@@ -30,24 +30,29 @@ final class BasicViewController: UIViewController {
            layout.height = 10
            layout.marginBottom = 25
        }
-        root.addSubview(child1)
+        view.addSubview(child1)

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

        let child3 = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
        child3.backgroundColor = .yellow
        child3.configureLayout { (layout) in
            layout.isEnabled = true
            layout.alignSelf = .flexStart
-        }
-        root.addSubview(child3)
+            layout.width = 100
+            layout.height = 100

-        root.yoga.applyLayout(preservingOrigin: true)
+        }
+        view.addSubview(child3)
+
+        view.yoga.applyLayout(preservingOrigin: true)
    }
 }
--- a/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift
+++ b/YogaKit/YogaKitSample/YogaKitSample/ViewControllers/LayoutInclusionViewController.swift
@@ -14,6 +14,7 @@ final class LayoutInclusionViewController: UIViewController {
    private let contentView: UIView = UIView(frame: .zero)

    override func viewDidLoad() {
+        super.viewDidLoad()
        let root = self.view!
        root.backgroundColor = .white
        root.configureLayout { (layout) in
@@ -51,9 +52,9 @@ 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: .touchUpInside)
        button.configureLayout { (layout) in
            layout.isEnabled = true
            layout.height = 300
@@ -66,7 +67,7 @@ final class LayoutInclusionViewController: UIViewController {
    }

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

        button.isUserInteractionEnabled = false