[______-_-______]

WASM typically has very good startup time only because the binary WASM format is so much faster to parse than javascript. See js-framework-benchmark, "Consistently interactive", Yew even beats vanillajs by about 4%.

https://krausest.github.io/js-framework-benchmark/2022/table...

Having said that, I still wouldn't try to use Rust as a React replacement for other reasons. Maybe in a few years.