Generated project fails to build in create-react-app project

Experienced behavior

I generated types definitions with CLI openapi --input ./api_spec.yaml --output ./openapi, but it fails to compile in unejected react app created with create-react-app CLI.

There are 2 problems:

Compilation error due to :

C:/xxx/openapi/index.ts
TypeScript error in C:/xxx/openapi/index.ts(10,10):
Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.  TS1205
Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'

     8 | export { OpenAPI } from './core/OpenAPI';
     9 |
  > 10 | export { MyModel } from './models/MyModel';

After commenting out reexported modules I encountered second problem:

Failed to compile.

./openapi/core/ApiError.ts
SyntaxError: C:\xxx\openapi\core\ApiError.ts: Namespace not marked type-only declare. Non-declarative namespaces are only supported experimentally in Babel. To enable and review caveats see: https://babeljs.io/docs/en/babel-plugin-transform-typescript
  24 | }
  25 |
> 26 | export namespace ApiError {
     |                  ^^^^^^^^
  27 |     export enum Message {
  28 |         BAD_REQUEST = 'Bad Request',
  29 |         UNAUTHORIZED = 'Unauthorized',

Expected behavior

Generated code compiles properly without warnings.

[ferdikoomen]

@jedzej @ilyaulyanov @lcalisi there is a new version 0.5.0-alpha that should resolve this issue, if you have time them please do check. More info on the flag here: https://github.com/ferdikoomen/openapi-typescript-codegen#enums-vs-union-types---useuniontypes and https://github.com/ferdikoomen/openapi-typescript-codegen#babel-support

[ferdikoomen]

Thanks for testing. Just pushed 0.5.0 to NPM, closing this ticket.