Should we use ResultOf on fragment documents?

[khurram-ansari]

Let's say I just want to use a certain type in helper function but not in component.

Here is a fragment doc:

export const CountryStateFragmentDocument = graphql(/* GraphQL */ `
  fragment CountryState on CountryState {
    code
    name
  }
`);

One way I can get the type without using readFragment is by adding @unmask on the fragment and using FragmentOf.

Other one is using ResultOf<typeof CountryStateFragmentDocument>

So, are these both approaches the same and should we use it like this way?

[kitten]

There's more information here: https://gql-tada.0no.co/guides/fragment-colocation#fragment-colocation-1

Whether you're using @_unmask or not, the FragmentOf utility type will continue to work and give you the correct type. You can use ResultOf on an unmasked fragment, but if you ever remove @_unmask, it'll stop working, whereas readFragment and FragmentOf are designed to work whether the fragment is unmasked or not, to allow you to change your mind later on.

[khurram-ansari]

Makes sense, thank you so much.