> Typescript is moving to go because you just cannot get performance out of javascript because of its design.

That's not an accurate summary. An accurate summary is that:

- They can't get the performance they want out of V8

- They're are moving to Go because its design is similar enough to JS that they can do a line-by-line port

These aren't similar claims (or mere quibbling) compared to what you wrote. They're very nearly exact opposites.