Add a IsClass type check to the StructSchema type

ianstormtaylor · Jan 25, 2024 · 44e7a3f · 44e7a3f
1 parent c88b111
commit 44e7a3f
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/src/utils.ts b/src/utils.ts
@@ -251,6 +251,13 @@ export type IsRecord<T> = T extends object
  ? T
  : never
  : never
+
+/**
+ * Check if a type is a class type.
+ */
+
+export type IsClass<T> = T extends { new (...args: any[]): any } ? T : never
+
 /**
  * Check if a type is a tuple.
  */
@@ -374,7 +381,9 @@ export type StructSchema<T> = [T] extends [string | undefined | null]
  ? null
  : Struct<E>
  : T extends object
- ? T extends IsRecord<T>
+ ? T extends IsClass<T>
+ ? null
+ : T extends IsRecord<T>
  ? null
  : { [K in keyof T]: Describe<T[K]> }
  : null