src/util/index.ts

@@ -2,3 +2,4 @@ export * from "./class"
 export * from "./effect"
 export * from "./extend"
 export * from "./misc"
+export * from "./zod"

src/util/zod.ts

@@ -0,0 +1,25 @@
+import { mapValues } from "lodash-es"
+import { z } from "zod"
+
+
+export function stripZodObjectDefaults<
+    T           extends z.ZodRawShape,
+    UnknownKeys extends z.UnknownKeysParam,
+    Catchall    extends z.ZodTypeAny,
+    Output,
+    Input,
+>(
+    schema: z.ZodObject<T, UnknownKeys, Catchall, Output, Input>
+) {
+    return schema.extend(
+        mapValues(schema.shape, v =>
+            v instanceof z.ZodDefault
+                ? v.removeDefault()
+                : v
+        ) as {
+            [K in keyof T]: T[K] extends z.ZodDefault<infer NestedDef>
+                ? NestedDef
+                : T[K]
+        }
+    )
+}