Seal the protocol factory interface

The only subtype should be the generated interface which is itself open to new subtypes.
cashapp · Jul 30, 2024 · bf06f42 · bf06f42
1 parent 0fbfeb6
commit bf06f42
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,7 +7,7 @@ New:
 - Source-based schema parser is now the default. Can be disabled in your schema module with `redwood { useFir = false }`.
 
 Changed:
-- Nothing yet!
+- `ProtocolFactory` interface is now sealed as arbitrary subtypes were never supported. Only schema-generated subtypes should be used.
 
 Fixed:
 - Nothing yet!

diff --git a/...ood-protocol-host/src/commonMain/kotlin/app/cash/redwood/protocol/host/ProtocolFactory.kt b/...ood-protocol-host/src/commonMain/kotlin/app/cash/redwood/protocol/host/ProtocolFactory.kt
@@ -30,7 +30,7 @@ import kotlin.native.ObjCName
  * @see HostProtocolAdapter
  */
 @ObjCName("ProtocolFactory", exact = true)
-public interface ProtocolFactory<W : Any> {
+public sealed interface ProtocolFactory<W : Any> {
   public val widgetSystem: WidgetSystem<W>
 }