bug: complex nested (and flattened) enum type produces invalid syntax

[michaelhthomas]

Describe the bug
Generating types for the InputField type in the reproduction below produces typescript with invalid syntax (a superfluous curly brace). My guess is that this has to do with the nested flattening of enums.

To Reproduce
Steps to reproduce the behavior:

1. Clone the reproduction repository: https://github.com/michaelhthomas/tsrs_repr
2. Run cargo test
3. Open the file bindings/InputField.ts
4. See syntax error due to extra } at end of file

Expected behavior
There are no syntax errors in the generated typescript code.

Screenshots

Version
9.0.1

Additional context
Add any other context about the problem here.

[gustavo-shigueo]

Hi @michaelhthomas, thanks for the report and especially for providing a reproduction!

I've opend a PR to fix this issue, check out #344