I'm with you that this seems like a weird question from someone who doesn't fully understand what they're asking. That being said, I for the Typescript part, I

I'm with you that this seems like a weird question from someone who doesn't fully understand what they're asking. That being said, I for the Typescript part, I think it's just badly worded and what OP is getting at is that most modern FE frameworks favor JSS over CSS stylesheets.