From someone who is working on a couple of now larger Typescript apps (both frontend and backend) I’ve began noticing compilation take long enough that I have a currently low hanging (but will obviously increase in priority) TODO to go through and refactor to improve compilation speed. I wouldn’t know how to google for this other than using the word “performant”. Although I realize in most cases performance specifically deals with production execution and what end users experience/perceive, I at least believe performance is not incorrect to describe what the author is helping with here.

> TODO to go through and refactor to improve compilation speed. I wouldn’t know how to google for this other than using the word “performant”

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.

It makes sense to me since TypeScript compiles but otherwise does not execute. If you want faster execution speed don’t do ridiculous things in your JavaScript.

A personal app I am working on is about 2mb of TypeScript now and takes about 6.5s to compile on my laptop.

I agree compilation speed really only affects the developer in the build chain. Execution speed affects the client and the end user. Seems like the focus should be more on the latter.