[DanielHB]

it is rather simple, JS tooling cares A LOT about the size of their dependency tree. Statically compiled languages do not (except if they focus on embedded programming). Having a binary be 2mb vs 30mb is not a big deal for a desktop application

Just for reference I was testing this the other day and compiled some simple C++ to WASM and adding:

std::cout << "some text";

to the code increased the binary size by like 5mb. Turns out std:cout pulls ALL currency-formating, date-formating and i18n code in the c++ standard library into your binary

ansi C printf does not meaningfully increase your WASM binary size

If you want your code to be able to be loaded on-the-fly and fast you need bundling tools, just like JS does. Bundling is a really hard problem, game devs struggle a lot with it as well (although their problem is usually bundling assets, not code itself)