It implements a substantial Go language/runtime slice targeted at tutorial, playground, and small app workloads. Goroutines, channels, select, interfaces, generics, defer/panic/recover, maps, slices — all supported. The Rust/WASM compile path lets you run Go directly in the browser via a dedicated WebAssembly engine with a browser-managed worker. Currently supports: time, net/http, io/fs, context, narrow os, json, regexp, crypto/*, and more.