Provided previous "queryFacts", a GraphQL schema, and a query document string, return a set of facts about that query useful for GraphiQL features.
If the query cannot be parsed, returns undefined.
Optionalschema: GraphQLSchema | null{GraphQLSchema} (optional)
OptionaldocumentString: string | null{string} the document you want to parse for operations (optional)
Utilities useful for language services across runtimes