server.js Authentication JWT Node.js

server.js

const express = require("express");
const bodyParser = require("body-parser");
const cors = require("cors");

const app = express();

// CORS multiple Domain
var allowlist = [
	'http://localhost:3000', 
	'http://localhost:4200', 
	'http://localhost:8080'
]

var corsOptionsDelegate = function (req, callback) {
  var corsOptions;
  if (allowlist.indexOf(req.header('Origin')) !== -1) {
    corsOptions = { origin: true } // reflect (enable) the requested origin in the CORS response
  } else {
    corsOptions = { origin: false } // disable CORS for this request
  }
  callback(null, corsOptions) // callback expects two parameters: error and options
}

app.use(cors(corsOptionsDelegate));

// parse requests of content-type - application/json
app.use(bodyParser.json());

// parse requests of content-type - application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: true }));

// simple route
app.get("/", (req, res) => {
  res.json({ message: "Welcome to Authentication JWT Node.js." });
});

// routes
require('./app/routes/auth.routes')(app);
require('./app/routes/user.routes')(app);

// set port, listen for requests
const PORT = process.env.PORT || 9090;
app.listen(PORT, () => {
  console.log(`Server is running on port ${PORT}.`);
});