import { VariablesAreInputTypesRule } from "https://deno.land/x/kilatgraphql@16.6.0-1/mod.ts";
Variables are input types
A GraphQL operation is only valid if all the variables it defines are of input types (scalar, enum, or input object).
See https://spec.graphql.org/draft/#sec-Variables-Are-Input-Types
Parameters
context: ValidationContext