package main
import (
	"syscall/js"
)
func main() {
	js.Global().Call("alert", "Hello World")
}

When built with GOOS=js GOARCH=wasm go build main.go using Go 1.11 this produces a WASM binary without error. However VSCode shows that there's an error:

could not import syscall/js (can't find import: "syscall/js")

I think this has to do with that namespace being experimental while wasm support stabilizes over the coming versions. I'm given very little details about the error.

As a result of the namespace not being found, intellisense also doesn't work.

I'm running VSCode 1.26.1 on Linux Mint 19 x64 with Go 1.11