server.js
Sun Sep 05 2021 13:20:46 GMT+0000 (Coordinated Universal Time)
Saved by
@devdave
// [1] IMPORT SECT.
// 'http' node package
const http = require("http");
// 'express' App
const app = require("./app");
// dotEnv variables
const dotEnv = require("dotenv").config({ path: "./config/.env" });
const configMongodb = require("./config/mongodb");
// [2] SERVER SECT.
// returns a valid PORT as a nbr or a string
const normalizePort = (val) => {
const port = parseInt(val, 10);
if (isNaN(port)) {
return val;
}
if (port >= 0) {
return port;
}
return false;
};
// env variable | setting up default port
const port = normalizePort(process.env.PORT);
// tells express which port to set
app.set("port", port);
const errorHandler = (error) => {
if (error.syscall !== "listen") {
throw error;
}
const address = server.address();
const bind =
typeof address === "string" ? "pipe " + address : "port: " + port;
switch (error.code) {
case "EACCES":
console.error(bind + " requires elevated privileges.");
process.exit(1);
break;
case "EADDRINUSE":
console.error(bind + " is already in use.");
process.exit(1);
break;
default:
throw error;
}
};
// [3] CREATE Server
// app = function => receives req & res
const server = http.createServer(app);
server.on("error", errorHandler);
server.on("listening", () => {
const address = server.address();
const bind = typeof address === "string" ? "pipe " + address : "port " + port;
console.log("Listening on " + bind);
});
// [=>] LISTEN Server on chosen port
server.listen(port);
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