Merge pull request #12874 from sffc/patch-1

Allow virtuals to be invoked in the definition of other virtuals

types/index.d.ts

@@ -353,7 +353,7 @@ declare module 'mongoose' {
     statics: { [F in keyof TStaticMethods]: TStaticMethods[F] } & { [name: string]: (this: M, ...args: any[]) => any };
 
     /** Creates a virtual type with the given name. */
-    virtual<T = HydratedDocument<DocType, TInstanceMethods>>(
+    virtual<T = HydratedDocument<DocType, TInstanceMethods, TVirtuals>>(
       name: keyof TVirtuals | string,
       options?: VirtualTypeOptions<T, DocType>
     ): VirtualType<T>;