Why is the operation marked as unnamed?

This happen when an operation doesn't have a name, for example:

❌ Missing a name after query

query {
  users {
    id
    email
  }
}

❌ Also missing a name

{
  users {
    id
    email
  }
}

❌ Unnamed mutation

mutation ($bookId: ID!) {
  order(bookId: $bookId) {
    id
    deliveryDate
  }
}

It can be fixed by explicitely setting a name:

✅ This will be shown as query GetUsers

query GetUsers {
  users {
    id
    email
  }
}

✅ This will be shown as mutation OrderBook

mutation OrderBook($bookId: ID!) {
  order(bookId: $bookId) {
    id
    deliveryDate
  }
}