I hope the work they did with the Babel team with help with this.
https://blogs.msdn.microsoft.com/typescript/2018/08/27/types...
https://blogs.msdn.microsoft.com/typescript/2018/08/27/types...
But I am less excited about projects containing TypeScript plus the large number of transitive dependencies from a typical Babel set up; I've been greatly enjoying TypeScript instead of that.
Edit: wait it looks like they’ve changed to all Rust with C++ for the libraries. I haven’t looked at the codebase since the spring. Am I crazy that i could have sworn it was written in Go previously?