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Does that mean they are not using type checking? That’s the really really slow part of writing TS and es build doesn’t include it, which is why I’ve never seen the point of using esbuild as a compiler.

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We are still type checking, it's just not needed as a dependency for our JS outputs. Type checking still happens in tests, and I have CI tasks and VS Code watch tasks which will make sure we are still type checking.

Thanks for the reply!

So when your team is compiling locally they don’t type check? It only runs in the IDE and during tests?

It's not perfectly cut and dry, but mostly. We still need to emit d.ts files for our public API, and the only thing that can do that is tsc, which will type check.

But I tried my best to make the build have fast paths to minimize the development loop as much as possible.

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