nodejs hello world

service.js

const app = require('express')(),
      bodyParser = require('body-parser');
      
var gStatus = {
      version : '20180619-1845'
    };

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

app.get('/status', function(request, response) {
  ...
});

...
  
const port = process.env.PORT || 5950;
const server = app.listen(port, function() {
        log.setLevel(3);
        log.write(0, "service version %s listening on port %s", gStatus.version, server.address().port);
});