The docs are incorrect/misleading. They don't say that the option is only a fallback for when columns cannot be detected.

The docs should also mention the use-case for the option.

And you need to update index.d.ts

@fi3ework Friendly bump :)

I'm using this with concurrently, and think I'm experiencing a similar issue that line widths become cut off too early.

EDIT: Didn't realise it was easy to fix by modifying the stdout:

process.stdout.columns = 300;

So guess this feature is not very important.