Just a reproduction repo to show a problem with date object conversion with nestjs and graphql.
query Query($dummyId: ID!, $createdAtCreatedAt: Date!) {
dummy(id: $dummyId) {
id
name
createdAt(createdAt: $createdAtCreatedAt)
}
}{
"dummyId": "1",
"createdAtCreatedAt": "2021-10-06T06:05:45.482Z"
}