Lost astNode in schema created by introspection query

[Code-Hex]

The generation logic relied on the schema passed from graphql-codegen. If this was a schema generated based on introspection, the astNode information was lost, so it seems that it was not possible to determine whether each schema was an enum or a scalar.

This issue was reported here:

graphql/graphql-js#1575

Originally posted by @Code-Hex in #386 (comment)

[Code-Hex]

@maoosi I just published this fix now 🔥
Thank you so much!
https://github.com/Code-Hex/graphql-codegen-typescript-validation-schema/releases/tag/v0.11.1

[maoosi]

@Code-Hex working great, thanks again for fixing it so fast!