tslint, while quite useful last year, still had (and has) known bugs with unused variables, missing/incorrect type assertions, and other annoyances.
Most new versions of TypeScript expand on their `strict` rules, and just enabling `strict` in your tsconfig, as well as using prettier, is arguably a more robust superset of seatbelts than tslint offered. I deleted tslint from all my TS projects several months ago and don't miss it at all.
