Is there any reason why there is not typescript eslint installed?

No particular reason. I thought eslint already took care of linting TS as well, until WebStorm started complaining about not being able to parse

import type

. That's when I learnt eslint needs a TS plugin separately. I was trying to set this up myself earlier this week, and paused it when it said something about a useless constructor, though it's valid Typescript to define class variables via a constructor. Paused the exploration there... Thank you for taking care of this as well. I wonder why even unchanged lines are showing up as changed in Github PR diff though. Any ideas?