Go WebAssembly lacks OS and threading support but works via browser APIs or runtimes like wazero.
Go WebAssembly lacks direct OS access, file system support, and threading, but you can work around these by using syscall/js for browser APIs, wazero for server-side execution, or wasmtime for native tooling.
import "syscall/js"
func main() {
js.Global().Get("console").Call("log", "Hello from Go WASM")
}
Go WebAssembly runs inside a sandbox, so it cannot directly access your computer's files or run multiple threads like a normal program. Think of it like a secure guest in a hotel who can only use the room's provided amenities, not the building's plumbing. You solve this by asking the host (the browser or runtime) to perform those tasks for you.