How could this landing page be improved?

My 3 main sugestions.

1. NO animation in the headline
Online smart readers don't exist. They are a legend. A message works if it's immediate.
In your case one has to see the animation to get it.
Plus it looks like a cheap trick, while you target tech savvy people.

2. Why don't start highlighting the problem?
Readers only care about their problems.
The safest way to get their attention is to ask a question like: "Do you have PROBLEM X?"
In your case it can be something like: "Old JS and TS drive you crazy?"

(I'm just learning JS so not sure this is the right way to present the problem. I hope you can get anyway the point of my example. Otherwise let me know in the comments.)

If you start with a question around the problem the whole copy gets easier. No need of fancy words or formulas. In the subhead you say something like "Modernize your code in less than 10 mins".

And then you present P42.

3. There's no clear uniqueness
Are there competitors? What distinguish you from them? It's not clear, hence the reader has to do his own research (aka leaving the page).

What differentiate P42 from other solutions for the same problem? I'm not an expert on the topic. But this info is not clear to me, after reading the page.

Let me know if this makes sense to you.