I have the following type
type User = { user?: { subscription?: {...} | null | undefined, ... } | null | undefined };
I want to get the type of subscription, i.e. I want to do something like
type SubscriptionType = User['user']['subscription'];
but TS Server throws the following error and the type of SubscriptionType is set to any
typescript: Property 'subscription' does not exist on type '{ __typename?: "users" | undefined; subscription?: { __typename?: "subscriptions" | undefined; id: number; activeSince?: any; renewalDate?: any; endingDate?: any; ... 7 more ...; } | null | undefined; } | null | undefined'.
I cannot define this type myself as it's being generated by graphql codegen and would change whenever the graphql query changes.
CodePudding user response：
We can use the Exclude utility type.
type SubscriptionType = Exclude<User["user"], null | undefined>["subscription"]