[Javascript] ES6 and react / react-native

Description

I am trying to use swagger-codegen to generate client-side code in my monorepo project

Swagger-codegen version

2.4.7

Swagger declaration file content or url

http://petstore.swagger.io/v2/swagger.json

Command line used for generation

swagger-codegen generate \                                                                                                                                                                        
--input-spec http://petstore.swagger.io/v2/swagger.json \
--lang javascript \
--output ./petstore \
--template-dir ./es6 \
--additional-properties usePromises=true,useES6=true

Steps to reproduce

1. Within my monorepo I am running the swagger-codegen generate command at the packages level

app
  - packages
    - repo1
    - repo2
    - repo3
  - package.json

The es6 template-dir is taken from the github issue linked below.

2. cd into packages/petstore and run npm install

3. rerun my react app

First issue

The template-dir does not seem to solve the experimental classProperties problem:

../petstore/src/ApiClient.js
SyntaxError: /path/to/packages/petstore/src/ApiClient.js: Support for the experimental syntax 'classProperties' isn't currently enabled (231:33):

I can get around this issue by replacing all classProperties with methods of the same name.

Second issue

If I use the workaround in the first issue, I now receive the error

TypeError: _petstore_src__WEBPACK_IMPORTED_MODULE_5__.PetApi.getPetById is not a function

when importing import { PetApi } from '../path/to/petstore/src and trying to call

PetApi.getPetById(1)

Related issues/PRs

https://github.com/swagger-api/swagger-codegen/issues/8024

I'm sure I'm missing an obvious step here, so any help is appreciated.

Thank you

Reproduce the command against the Petstore specification, then inspect the generated src/ApiClient.js and PetApi entry point under the es6 template directory. Check the reported classProperties failure and the PetApi.getPetById import/call in the React monorepo. Done means the generated client installs and the example call works without either reported error.