[dagw]

Why is the TypeScript team moving to an entirely different technology

A few things mentioned in an interview:

Cannot build native binaries from TypeScript

Cannot as easily take advantage of concurrency in TypeScript

Writing fast TypeScript requires you to write things in a way that isn't 'normal' idiomatic TypeScript. Easier to onboard new people onto a more idiomatic codebase.

[dboreham]

The message I hear is: don't use JS, don't use async. Music to my ears.

[koakuma-chan]

All Go is async though.