Versioning .bs.js might be a good infiltration strategy to adopt ReScript in your workplace.
That said I think the benefit is marginal when the codebase is already written in pure ReScript.
The most painful thing is, as @moondaddi mentioned, resolving conflicts between branches.
Another aspect is that I barely care about the output.
ReScript’s pickup line from the title page mentions the ‘readability’ of compiled output.
But in my experience, almost every beginner introduced to this phrase, is curious ‘why should I care about JS again?’
I accept this as a fair complaint since that is the purpose of choosing high-level languages.
Hence tracking all the outputs in git might be a good trick in some situations, but better not recommended in general.