Using GraohQL to establish constraints for query parameters

Is there a way to validate a GraphQL query parameter? I need the bookings query to reject negative values for the page parameter.

When utilizing these modules for generating typescript types, can a constraint be created? (page > 0)

{
    "@graphql-codegen/cli": "2.6.2",
    "graphql-codegen/typescript": "2.4.5"
{
type Booking { 
    id: ID!
    totalPrice: Float!
    user: User!
    event: Event!
    address: Address!
    createdAt: String!
}

type Query {
    bookings(page: Int!): [Booking!]!
}

Answer №1

Both GraphQL schema and Typescript currently do not have built-in support for this specific type of limitation. One alternative solution would be to manage this restriction on the server-side.

Update:

Interestingly, there exists an npm package that addresses this, which can be found at this link

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