oh, well i could have both

/SuiteScripts/myCompany/lib/my_first.ts

, and

tsc

would output

/SuiteScripts/myCompany/lib/my_first.js

. I think I could technically deploy

/SuiteScripts/myCompay/lib/*

, so that both the .ts and .js files are uploaded into the filecabinet

I don't think there's much value in deploying ts sources to file cabinet since they won't be executed. Conversely, I don't track the resulting js files in my git repository. I compile and deploy in the same step, and don't track the intermediate files. I have an example project on github. Here is the suitelet entrypoint https://github.com/jeffreymkabot/netsuite-task-status/blob/master/src/task-status/task_status_sl.ts