Closed
Description
In introspection.js, introspectionTypes doesn't have an explicitly given type (I don't know Flow well enough to understand what is inferred), and isIntrospectionType takes a GraphQLNamedType as an argument.
In the TypeScript introspection.d.ts, introspectionTypes is given as ReadonlyArray<GraphQLType> and isIntrospectionType takes a GraphQLType as an argument.
I think it would make sense to change the TypeScript types to ReadonlyArray<GraphQLNamedType> and an argument of GraphQLNamedType respectively. (We have a project that uses introspectionTypes and expects them all to have names.)
I can send a PR if you agree!