server.js

/**
 * Node Server!
 */

var fs = require('fs');
var path = require('path');
var express = require('express');
var bodyParser = require('body-parser');
var app = express();

var HEROS_DIR = path.join(__dirname, 'src/images/heros');

app.set('port', (process.env.PORT || 3000));

app.use('/', express.static(path.join(__dirname, 'src')));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));

// Additional middleware which will set headers that we need on each request.
app.use(function(req, res, next) {
    // Set permissive CORS header - this allows this server to be used only as
    // an API server in conjunction with something like webpack-dev-server.
    res.setHeader('Access-Control-Allow-Origin', '*');

    // Disable caching so we'll always get the latest comments.
    res.setHeader('Cache-Control', 'no-cache');
    next();
});

app.get('/api/heros', function(req, res) {
    var heros = fs.readdirSync(HEROS_DIR)
    res.json(heros);
});

app.listen(app.get('port'), function() {
    console.log('Server started: http://localhost:' + app.get('port') + '/');
});