If you like your JavaScript, you can keep your JavaScript. You have no reason to care about WebAssembly. Why would you build a JavaScript imitation on WebAssembly when you can just use JavaScipt?
WebAssembly is for the rest of us.
Not everyone enjoys writing verbose S-Expressions [1], even if it makes for a good canonical format.
If you despise JavaScript so much that you can't bear the thought of something that vaguely looks like JavaScript, then don't worry there are other "skins" for writing WebAssembly [2-4] and it should not be too hard to write your own.
Finally, nobody owns WebAssembly. It's for clever people like yourself just as much as it is for dirty JavaScript programmers like me.
[1] https://developer.mozilla.org/en-US/docs/WebAssembly/Text_fo...
[2] https://github.com/tmcw/wah
[3] https://github.com/serprex/luwa
[4] https://medium.com/cirru-project/webassembly-s-expression-an...
WebAssembly is for everyone.