Work

src/effect/schema/class/TMutableClass.ts

@@ -2,7 +2,7 @@ import type { Annotations, Class, Struct } from "@effect/schema/Schema"
 import type { Mutable } from "effect/Types"
 import type { Constructor } from "type-fest"
 import type { StaticType } from "../../.."
-import type { HasFields, MissingSelfGeneric } from "./util"
+import type { HasFields } from "./util"
 
 
 export type TMutableClass<
@@ -26,19 +26,17 @@ export type TMutableClass<
         StaticType<Class<Self, Fields, I, R, C, Inherited, Proto>>,
         "extend"
     > & {
-        extend<Extended = never>(identifier: string): <newFields extends Struct.Fields>(
+        extend<Extended>(identifier: string): <newFields extends Struct.Fields>(
             fields:        newFields | HasFields<newFields>,
             annotations?:  Annotations.Schema<Extended>,
-        ) => [Extended] extends [never]
-            ? MissingSelfGeneric<"Base.extend">
-            : TMutableClass<
-                Extended,
-                Fields & newFields,
-                I & Struct.Encoded<newFields>,
-                R | Struct.Context<newFields>,
-                C & Struct.Constructor<newFields>,
-                Self,
-                Proto
-            >
+        ) => TMutableClass<
+            Extended,
+            Fields & newFields,
+            I & Struct.Encoded<newFields>,
+            R | Struct.Context<newFields>,
+            C & Struct.Constructor<newFields>,
+            Self,
+            Proto
+        >
     }
 )