import { SingleFieldSubscriptionsRule } from "https://deno.land/x/graphql_tools@0.0.4-deprecated/deps.ts";
Subscriptions must only include one field.
A GraphQL subscription is valid only if it contains a single root field.
x/graphql_tools/deps.ts>SingleFieldSubscriptionsRule
import { SingleFieldSubscriptionsRule } from "https://deno.land/x/graphql_tools@0.0.4-deprecated/deps.ts";
Subscriptions must only include one field.
A GraphQL subscription is valid only if it contains a single root field.