That's not the point I'm making. I use esbuild often for TS development tooling. But if you're building developer tools or libraries and want the output to be

That's not the point I'm making. I use esbuild often for TS development tooling. But if you're building developer tools or libraries and want the output to be optimized for the end-user, introducing a middleman like tsc or esbuild can have tradeoffs. This is likely what the ESLint team considered.