Added a canonical listing of types DynamicCodable uses

Sources/DynamicCodable/DynamicCodable.swift

@@ -11,11 +11,11 @@
 public enum DynamicCodable: Equatable, Hashable {
     /// A value coded using a keyed container such as a dictionary.
     /// - Tag: DynamicCodable.keyed
-    case keyed([Key : Self])
+    case keyed(Keyed)
 
     /// A value coded using a keyed container such as an array.
     /// - Tag: DynamicCodable.unkeyed
-    case unkeyed([Self])
+    case unkeyed(Unkeyed)
 
     /// A value coding nil as a single value container.
     /// - Tag: DynamicCodable.nil
@@ -80,6 +80,80 @@ public enum DynamicCodable: Equatable, Hashable {
     /// A (rare) value coding an empty single value container. Only certain decoders may even support this.
     /// - Tag: DynamicCodable.empty
     case empty
+
+    // MARK: - DynamicCodableTypes
+
+    /// The underlying type for [.keyed](x-source-tag://DynamicCodable.keyed) values.
+    /// - Tag: DynamicCodable.Keyed
+    public typealias Keyed = [DynamicCodable.Key : DynamicCodable]
+
+    /// The underlying type for [.unkeyed](x-source-tag://DynamicCodable.unkeyed) values.
+    /// - Tag: DynamicCodable.Unkeyed
+    public typealias Unkeyed = [DynamicCodable]
+
+    /// The underlying type for [.nil](x-source-tag://DynamicCodable.nil) values.
+    /// - Tag: DynamicCodable.Nil
+    public typealias Nil = Optional<Any>
+
+    /// The underlying type for [.bool](x-source-tag://DynamicCodable.bool) values.
+    /// - Tag: DynamicCodable.Bool
+    public typealias Bool = Swift.Bool
+
+    /// The underlying type for [.string](x-source-tag://DynamicCodable.string) values.
+    /// - Tag: DynamicCodable.String
+    public typealias String = Swift.String
+
+    /// The underlying type for [.float64](x-source-tag://DynamicCodable.float64) values.
+    /// - Tag: DynamicCodable.Float64
+    public typealias Float64 = Swift.Float64
+
+    /// The underlying type for [.float32](x-source-tag://DynamicCodable.float32) values.
+    /// - Tag: DynamicCodable.Float32
+    public typealias Float32 = Swift.Float32
+
+    /// The underlying type for [.int](x-source-tag://DynamicCodable.int) values.
+    /// - Tag: DynamicCodable.Int
+    public typealias Int = Swift.Int
+
+    /// The underlying type for [.int8](x-source-tag://DynamicCodable.int8) values.
+    /// - Tag: DynamicCodable.Int8
+    public typealias Int8 = Swift.Int8
+
+    /// The underlying type for [.int16](x-source-tag://DynamicCodable.int16) values.
+    /// - Tag: DynamicCodable.Int16
+    public typealias Int16 = Swift.Int16
+
+    /// The underlying type for [.int32](x-source-tag://DynamicCodable.int32) values.
+    /// - Tag: DynamicCodable.Int32
+    public typealias Int32 = Swift.Int32
+
+    /// The underlying type for [.int64](x-source-tag://DynamicCodable.int64) values.
+    /// - Tag: DynamicCodable.Int64
+    public typealias Int64 = Swift.Int64
+
+    /// The underlying type for [.uint](x-source-tag://DynamicCodable.uint) values.
+    /// - Tag: DynamicCodable.UInt
+    public typealias UInt = Swift.UInt
+
+    /// The underlying type for [.uint8](x-source-tag://DynamicCodable.uint8) values.
+    /// - Tag: DynamicCodable.UInt8
+    public typealias UInt8 = Swift.UInt8
+
+    /// The underlying type for [.uint16](x-source-tag://DynamicCodable.uint16) values.
+    /// - Tag: DynamicCodable.UInt16
+    public typealias UInt16 = Swift.UInt16
+
+    /// The underlying type for [.uint32](x-source-tag://DynamicCodable.uint32) values.
+    /// - Tag: DynamicCodable.UInt32
+    public typealias UInt32 = Swift.UInt32
+
+    /// The underlying type for [.uint64](x-source-tag://DynamicCodable.uint64) values.
+    /// - Tag: DynamicCodable.UInt64
+    public typealias UInt64 = Swift.UInt64
+
+    /// The underlying type for [.empty](x-source-tag://DynamicCodable.empty) values.
+    /// - Tag: DynamicCodable.Empty
+    public typealias Empty = Swift.Void
 }
 
 extension DynamicCodable {