Then read the article? I don't get it - Typescript, to anyone familiar, is not a language runtime. It does not optimize. It is a transpiler. If you don't even know this much about Typescript, you aren't the audience and lack prerequisite knowledge. Go read anything on the topic.

If someone posted an article talking about the "handedness" of DNA or something, I wouldn't complain "oh, you confused me, I thought you were saying DNA has hands!"