Any way to specify a filename for output?

[stephenpmurray]

I want to generate three different data structures for both golang and typescript, and it would make sense for me to keep these in the same package, rather than having

In the case of golang, the filename is dictated by the package name, and the typescript filename defaults to index.ts.

Am I missing something, and is there a way to specify the filename (not just directory) of my output?