<script type="text/javascript" src="http://127.0.0.1:8001/_compile/src/Main.elm"></script>

<script>

    if (typeof Elm === "undefined") {
        document.body.innerHTML = `Elm Invoker is probably down.`
    }
    else if (Elm.Errors) {
        document.body.innerHTML =
            `<iframe src="http://127.0.0.1:8002/src/Main.elm" frameborder="0"
                style="overflow:hidden;width:100%" height="10000">
            </iframe>`
    } else {
        var app = Elm.Main.init({ flags : { token: localStorage.token || "" }})
        // ...
    }

</script>