const express = require("express"); const app = express(); const port = process.env.SERVER_PORT || 3000; app.use(function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header( "Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept" ); next(); }); app.get("/api/ping", (req, res) => { res.send({ msg: "Hello, World" }); }); app.listen(port, () => console.log(`Listening on port ${port}`));