A handy function that normalizes a port into a number, string, or false.
npm install --save normalize-port-2
const http = require("http");
const normalizePort = require("normalize-port-2");
const port = normalizePort(process.env.PORT || "8080");
const server = http.createServer(listenerOrApp).listen(port, () => {
console.log(`Server running: http://127.0.0.1:${port}.`);
});import http from "http";
import normalizePort from "normalize-port-2";
const port = normalizePort(process.env.PORT || "8080");
const server = http.createServer(listenerOrApp).listen(port, () => {
console.log(`Server running: http://127.0.0.1:${port}.`);
});I just pulled this little function out of the normalize-port package.