Implement Resolver

Implement a resolver that returns the user permission(s).

// graphql-citadel will check if the  user has permission that is declared at @hasPermissions
async function permissionResolver({context}): Promise<string[]> {
    const { user } = context
    const permission = await getUserPermission(user)
    return permission
}

const { citadelDirective, citadelDirectiveTransformer } = citadelDirective({
    permissionResolver
})