[kevingadd]

I would caution anyone looking to make their UI "snappy": while webassembly performance for things like raw compute - especially with simd - is superior, any time you need to interface with browser APIs like the DOM to update your UI you're now going to pay a bunch of interop costs that aren't present in native JavaScript. For some workloads this will make wasm meaningfully slower - especially ones that use strings.

[eyelidlessness]

Or really just anything “chatty” with the main thread. Doesn’t have to be strings, or DOM, just heavy cross-VM/cross-thread interaction.