Nested Mutations in GraphQL Nexus

I've struggled with creating an array of mutation with GraphQL Nexus
, I tried so many solutions but I wasn't satisfied with it because it causes bad performance in some cases, but today I tried a solution that I think it's the better way to create an array of mutations in Nexus, I've used graphql-auth example from Prisma examples repo to explain my point. I created the nested mutation option to deletePost mutation in the example.
Please check it and tell me what do you think about it and of course, I want to know your suggestions for solutions better than this.