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kotlinlang

oh the problem was `lateinit` obviously lateinit and jsname doesnt work together

Should work. Look for
```  Object.defineProperty(YourClass.prototype, 'YourJsName', {
```

yeah true, yet when serializing it to json the property name was still wrong

OTOH i was very tired when asking here, maybe there wasn;t any problem in the  end - i will have a look again later today\

Sadly `JSON.stringify()` doesn’t use not-owned properties. Its a common problem for all prototype-based JS code. There are workarounds like using custom `toJSON()` method or something like: <https://www.npmjs.com/package/flatten-prototypes>