Help!! type errors in generated code (Zod v4 support??)

[sotta-tis]

When using graphql-codegen-typescript-validation-schema together with Zod v4, the generated code produces type errors. The output still assumes the Zod v3 style where input and output types are identical, but in Zod v4 the generics are <Output, Def, Input>, so this no longer works.

Example error:
zod v4.1.5
graphql-codegen-typescript-validation-schema v0.17.1

lib/graphql/validation.ts:
  plugins:
    - typescript-validation-schema
  config:
    schema: zod
    enumsAsTypes: true
    strictScalars: false
    useTypeImports: true
    withObjectType: true
    importFrom: './generated'

// from generated code
[K in keyof T]: z.ZodType<T[K], any, T[K]>;
// -> TS error about '$ZodTypeInternals'

This seems to be caused by the generated definitions not being updated for the Zod v4 type system.

Does anyone know the recommended solution or workaround for this issue?

[Code-Hex]

@sotta-tis I just published zod v4 supported version by @yoshi6jp
Could you try this one? https://github.com/Code-Hex/graphql-codegen-typescript-validation-schema/releases/tag/v0.18.0

[sotta-tis]

@Code-Hex
Awesome!!!!
I tested v0.18.0 and it generated the validation schema without any errors!

Thank you to everyone involved !! — especially @yoshi6jp (are you Japanese? me too).
I really admire your work and aspire to become an engineer like you...