Sure... they mentioned the fact that the TypeScript compiler barely generates code, if that&#x27;s what you mean by the original function of compilers.<p>The architecture is completely dominated by the front end for usability and incrementality now.  Generating JavaScript after all that is trivial.<p>You can imagine that during a typical program&#x27;s development lifetime, 99% of the time is spent with the program in a non-working state, and 1% is when it&#x27;s working.  The compiler has to help with the 99% case now, not just the 1% case.