Orval overuses `AnyOf` types delimiter

[jaxxreal]

What are the steps to reproduce this issue?

1. Generate orval client with the following config:

   export default defineConfig({
   apiClient: {
   input: {
     target: 'http://localhost:3001/swagger-json',
   },
   output: {
     target: './src/client/orval.ts',
     schemas: './src/orval-types',
     mode: 'single',
     client: 'swr',
     override: {
       mutator: {
         path: './src/client/httpClient.ts',
         name: 'makeRequest',
       },
       useNamedParameters: true
     },
   },
   hooks: {
     afterAllFilesWrite: 'eslint --fix',
   },
   },
   });

What happens?

Look at the types generated. Names like ListOfActivitiesResponseAnyOfDataAnyOfItemAnyOfAttributesAnyOfDataAnyOfItemAnyOfTargetAnyOfId are pretty common. OpenAPI schema for the given example has NO anyOf conditions.

What were you expecting to happen?

If an OpenAPI spec has no anyOf condition I don't expect to see them on my types. So the expected type name would be: ListOfActivitiesResponseDataItemAttributesDataItemTargetId

Any logs, error output, etc?

-

Any other comments?

It's an issue because nearly every single generated file has a decent amount of AnyOf.

I know that the project is looking for contributors, so I would appreciate minimal guidance on where to start my search for a solution. Maybe it's a configuration issue? Please let me know.

What versions are you using?

orval@6.28.2

Please execute npx envinfo --system --npmPackages orval,zod,axios,msw,swr,@tanstack/react-query,@tanstack/vue-query,react,vue and paste the results here.

System:
    OS: macOS 14.6.1
    CPU: (12) arm64 Apple M3 Pro
    Memory: 94.64 MB / 36.00 GB
    Shell: 5.9 - /bin/zsh