Examples: phonegap, electron, unity, love2d, reactnative, and nodejs itself. (Node = I know web but not native, can you help me write server code without learning C/python).

Most of this stuff solves the problem of “I want to program on platform X, but I’m most comfortable in Y. Can someone prevent me from needing to learn X’s paradigms?”. Arguably that’s one of the biggest draws of wasm itself, and why the communities around a lot of languages are excited about it. (Eg rust, blazer). (“Ugh don’t make me learn JavaScript. I already know C# and I like it. Can I just do that instead?”)

To your point, I think it seems like there’s not much demand for such a thing because the people it would help aren’t involved enough yet to file issues. If they’re invested enough in the community and the problem, they’re probably invested enough to learn enough JS to bridge the languages themself anyway.

Which is all to say, I think making a wasm script tag after host bindings are in is a good idea and will make a lot more people happy than it would seem if you just surveyed the existing community.

I'm not a web platform person, but I have coded some wasm application as a part of my undergraduate course work, and it is really annoying to use javascript just because rust code cannot be initialized without this BASIC of XXI century.

Outdated unsafe language with outdated unsafe API for DOM access on top of modern language with an ability to design strict, safe and elegant APIs. One need not to be a guru of JS to get access to DOM and to initialize wasm-module, and to write the majority of code in rust, but all this javascript stuff feels like a fifth wheel for a cart: maybe it doesn't hurt much, but it is a dead weight at least.

I mean, I'm not a web platform person, and it is far far away from my day to day work, so maybe I see it all wrong, but I believe that javascript is doomed, like any other fifth wheel. It will last, maybe decade or even more, but it is doomed.