In spite of the HN headline, I'm glad the wiki page doesn't use the word "performant."
However, I was surprised that "performance" refers to compilation/editing speed rather than execution speed.
However, I was surprised that "performance" refers to compilation/editing speed rather than execution speed.
But you already used the words naturally in your sentence, "compilation speed". A quick google search brought up lots of useful results with 'typescript compiles slow', 'typescript compile faster', etc.
A personal app I am working on is about 2mb of TypeScript now and takes about 6.5s to compile on my laptop.