It is taking a while for garbage collected languages to provide WebAssembly support, which is leaving room for some creativity! Astro is a new multi-paradigm language designed specifically for WebAssembly.
Bundler wars, Parcel vs. Webpack
Hot on its heels, Webpack 4.0 beta was released, providing WebAssembly support for C++, Rust and various other languages using their ‘loader’ pattern.
And Finally …
WebAssembly is spreading … this pull request looks at replacing the C++ code in node-sass with WebAssembly. Soon everyone will be using WebAssembly, without even knowing it!