Porffor compiles the JS to WASM, so it would be kind of a waste. Though there might be no reason the two projects cannot share some logic, like parsing the JS and such. I kind of doubt this is why its being funded. It sounds like a useful project.
It can also compile to Native
If that happens I would thank defunkt so much. Great way to spend money.
You'd have to wait before using any website using js. The AOT introduces a delay. Not sure it's achievable.
I thought ladybird used WebKit?
No. Completely green field. Well, it _was_. I believe they’ve recently accepted that third party libraries will be allowed in the non-Serenity OS version.
Since js is dynamic you can't compile all ahead of time, so you need an interpreter