server.js

var express = require('express')
var app = express()
var path = require('path');

app.use(express.static(path.join(__dirname, 'dist_prod')));

app.get('*', function (req, res) {
    res.sendFile(path.join(__dirname, './dist_prod/index.html'));
});


// catch 404 and forward to error handler
app.use(function (req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    console.log(err);
    res.send({ ok: false, error: err.message })
});

let port = 3000;

app.listen(port, function () {
    console.log(`listening on port ${port}!`)
});