Exceptions are actually duplicated

[glureau]

By default Kotlin generate exceptions in the js code but they are not visible in the Typescript code.

By exposing exceptions like CancellationException for Typescript, KustomExport actually generates a duplicated class in the js code. If passing one exception via a method is properly handled, if exception is thrown it's not wrapping the exception. So eventually we ends up with CancellationException and CancellationException_1 in the js code, and the instanceof is failing.

Proposed solution: use external + @JsExport instead of redefining those exception classes.

[glureau]

JsExport is not applicable to Exception, also we can't use package kotlin as it's reserved to kotlin itself.

Maybe generating a TS header could be enough to keep Exceptions inheritance?

[glureau]

Related to #20

Not sure what's the best path yet...

[glureau]

#20

Released in 0.5.0