Type Alias ExtractVariablesDeep<Query>

ExtractVariablesDeep: Query extends Variable<infer VType, infer VName>
    ? { [key in VName]: GetVariableType<VType> }
    : Query extends string
    | number
    | boolean
    | (string | number | boolean)[]
        ? {}
        : UnionToIntersection<
            {
                [K in keyof Query]: WithOptionalNullables<
                    ExtractVariablesDeep<Query[K]>,
                >
            }[keyof Query],
        >