You can convert any type in Elm to Any and convert back again later.
You need to add the following code to your index.html before you call Elm.Main.init.
var $linsyking$anytype$Any$encode = function (_v0) {
return _v0;
};
var $linsyking$anytype$Any$decode = F2(
function (dummy, _v0) {
if (typeof (dummy) != typeof (_v0)) {
return dummy
} else {
return _v0;
}
});