Both the old and the new transform are built on Babel, so Babel is involved. Both transforms participate in TypeScript typing, so TypeScript is involved. Not t

Both the old and the new transform are built on Babel, so Babel is involved. Both transforms participate in TypeScript typing, so TypeScript is involved. Not that you're not well aware of both these points, but I do feel like the point at which to scruple over "software is too complex" comes somewhere well before the point where JSX is happening at all, and I'll admit it's a little confusing to see them apparently in the opposite order here, especially put in such strong terms as these. After all, there's a distinction to be made between essential and accidental complexity. I'd argue that what both these transforms do is to abstract away a lot of the latter so that the former can be more easily seen and managed, and I think they do a pretty good job of it. (The rest of React, I'm not so sure about, some days...)