[WorldMaker]

Based on the release notes, the Typescript team is working on faster type-checking as continuous goal and has many big long-term irons in that fire. Though a lot of the more recent work has gotten into the performance of projects already scaled into project references and incremental builds, so it may not yet be obvious how much work has gone into performance if you consider your projects small/medium-sized.

It can sometimes be quite an effort to refactor a medium sized project into project references with incremental builds and there's currently no obvious moment where Typescript knows to tell you "you've got a 'large' project now, if you split this workspace into multiple tsconfig projects that smartly reference each other and switched to incremental build flags you'd get a bunch of performance improvements". So that's still a matter of figuring it out for your own projects if you can take advantage of that (and how you would take advantage of that).