Why are fields on QueryResolver optional?

Hello,

I’m generating resolvers using resolvers template

gql-gen --template graphql-codegen-typescript-resolvers-template --config gql-gen.json --out __generated/resolver-types.ts -s src/graph-api/schema.graphql (using no-namespaces version for babel-typescript)

Here’s my query type:

type Query {
  users: [User!]!
}

Here’s my query resolver type:

export interface QueryResolvers<Context = RequestContext, TypeParent = never> {
  users?: QueryUsersResolver<User[], TypeParent, Context>;
}

Here’s how I use it:

export const Query: QueryResolvers = {
  users: async (_parent, _args, ctx) => ctx.db.users()
};

Why is users field optional? The result of users query can’t be null. Am I missing something? If there’s a reason for it to be optional, can we get an option to make it required? I’d like to be notified by typescript if I don’t implement a resolver that is required in my schema. Would be very helpful.

Thank you!

[borekb]

As a small note, there’s a built-in Required<T> type:

const queryResolvers: Required<QueryResolvers> = ...;

[P4sca1]

I would prefer if it would be required by default and if you want to split it into modules, you use the already existing Partial type. Guess that’s just personal preference. Anyways, thank you for your answer! 😃