Merge pull request #1866 from nestjs/fix/without-callback-fix

fix: exclude last argument only if its of type function (cb)

Author: kamilmysliwiec

lib/interfaces/type.interface.ts

@@ -4,4 +4,10 @@ export interface Type<T = any> extends Function {
 
 export type WithoutCallback<T extends any[]> =
   // T extends any makes this distributive
-  T extends any ? (T extends [...infer U, any] ? U : T) : never;
+  T extends any
+    ? T extends [...infer U, infer C]
+      ? C extends Function
+        ? U
+        : T
+      : T
+    : never;