simple Server Express Serve SPA

var express = require("express");
var app = express();

app.use(express.static("dist"));
app.use((req,res)=>{
  res.sendFile(path.join(__dirname, 'dist/index.html'));
});
var server = app.listen(8081, function(){
    var port = server.address().port;
    console.log("Server started at http://localhost:%s", port);
});