Fix parsing regression in 4.3.0 from addition of parsing layer effects

Sources/Private/Model/Extensions/KeyedDecodingContainerExtensions.swift

@@ -9,6 +9,9 @@ protocol ClassFamily: Decodable {
   /// The discriminator key.
   static var discriminator: Discriminator { get }
 
+  /// The "unknown" fallback case if the type discriminator could not be parsed successfully.
+  static var unknown: Self { get }
+
   /// Returns the class type of the object corresponding to the value.
   func getType() -> AnyObject.Type
 }
@@ -34,7 +37,7 @@ extension KeyedDecodingContainer {
     var tmpContainer = container
     while !container.isAtEnd {
       let typeContainer = try container.nestedContainer(keyedBy: Discriminator.self)
-      let family: U = try typeContainer.decode(U.self, forKey: U.discriminator)
+      let family: U = (try? typeContainer.decodeIfPresent(U.self, forKey: U.discriminator)) ?? .unknown
       if let type = family.getType() as? T.Type {
         list.append(try tmpContainer.decode(type))
       }
@@ -60,7 +63,7 @@ extension KeyedDecodingContainer {
     var tmpContainer = container
     while !container.isAtEnd {
       let typeContainer = try container.nestedContainer(keyedBy: Discriminator.self)
-      let family: U = try typeContainer.decode(U.self, forKey: U.discriminator)
+      let family: U = (try? typeContainer.decodeIfPresent(U.self, forKey: U.discriminator)) ?? .unknown
       if let type = family.getType() as? T.Type {
         list.append(try tmpContainer.decode(type))
       }

Sources/Private/Model/LayerEffects/EffectValues/EffectValue.swift

@@ -50,8 +50,8 @@ class EffectValue: Codable, DictionaryInitializable {
   }
 
   required init(dictionary: [String: Any]) throws {
-    type = EffectValueType(rawValue: try dictionary.value(for: CodingKeys.type)) ?? .unknown
-    name = try dictionary.value(for: CodingKeys.name) ?? "Effect"
+    type = (try? dictionary.value(for: CodingKeys.type)).flatMap(EffectValueType.init(rawValue:)) ?? .unknown
+    name = (try? dictionary.value(for: CodingKeys.name)) ?? "Effect"
   }
 
   // MARK: Internal

Sources/Private/Model/Layers/LayerModel.swift

@@ -27,6 +27,8 @@ extension LayerType: ClassFamily {
       return ShapeLayerModel.self
     case .text:
       return TextLayerModel.self
+    case .unknown:
+      return LayerModel.self
     }
   }
 }
@@ -40,6 +42,7 @@ public enum LayerType: Int, Codable {
   case null
   case shape
   case text
+  case unknown
 
   public init(from decoder: Decoder) throws {
     self = try LayerType(rawValue: decoder.singleValueContainer().decode(RawValue.self)) ?? .null
@@ -241,6 +244,8 @@ extension Array where Element == LayerModel {
         return try ShapeLayerModel(dictionary: dictionary)
       case .text:
         return try TextLayerModel(dictionary: dictionary)
+      case .unknown:
+        return try LayerModel(dictionary: dictionary)
       case .none:
         return nil
       }

Tests/__Snapshots__/AutomaticEngineTests/testAutomaticEngineDetection.Issues-issue_2206.txt

@@ -0,0 +1 @@
+Supports Core Animation engine