beta3 useMutation TContext Question

[dusty]

I'm playing with beta3 and trying to make a custom hook, and I'm getting a type error that I need to provide 4 types to useMutation options. I can't figure out what the TContext type is supposed to be.

Here is an example

export const useSignupMutation = (
  options?: UseMutationOptions<SignupMutation, GraphqlError, SignupMutationVariables>
) => {
  return useMutation<SignupMutation, GraphqlError, SignupMutationVariables>(
    graphqlFetchFn<SignupMutation, SignupMutationVariables>(SignupDocument),
    options
  )
}

[boschni]

It's the value returned from the onMutate callback: https://react-query-beta.tanstack.com/guides/optimistic-updates . But the UseMutationOptions generics should have defaults so I added them in the latest beta.

[dusty]

Thanks!