node with express

index.js

var express = require('express');
var path    = require('path');
// var http    = require('http');
var app     = express();
var path    = require('path');
var routes  = require('./routes');
var bodyParser = require('body-parser');

app.set('views', './views_dir');
app.set('view engine', 'pug');


app.use(function(req, res, next) {
    req.name = 'SON';
     console.log('I AM A CUSTOm MIDDLEWARE');
    next();
});

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

app.get('/', function(req, res) {
    res.render('index', {
        message: 'Hello world from express by ' + req.name
    });
    // res.send('Hello world from express by ' + req.name);
});

app.get('/world', function(req, res){
    res.send('world');
});

app.use('/hello', routes);
app.use('/public', express.static(path.join(__dirname, 'public')));


// app.get('/swagger.json', function (req, res) {
//     res.setHeader('Content-Type', 'application/json');
//     res.send(swaggerSpec);
// });

const swaggerUi = require('swagger-ui-express');
const swaggerSpec = require('./swagger-spec');
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec)); 

app.use(function(err, req, res, next) {
    res.status(500)
       .json({
            message: 'Something wrong happens'
       });
});

// http.createServer(app).listen(3000, function() {
//         console.log('Express started');
// });

app.listen(3000, function() {
    console.log('Express started');
});

package.json

{
  "name": "my_express",
  "version": "1.0.0",
  "description": "Minha aplicação lindia",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Leonan <SON>",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.15.2",
    "express": "^4.14.0",
    "pug": "^2.0.0-beta6",
    "swagger-jsdoc": "^3.3.0",
    "swagger-ui-express": "^4.0.7"
  }
}

swagger-spec.js

var swaggerJSDoc = require('swagger-jsdoc');

const { version, name, description } = require('./package.json');
// swagger definition
var swaggerDefinition = {
    
    info: {
        title: 'Swagger API from: ' + name,
        version: version,
        description: description,
    },
    host: 'localhost:3000',
    basePath: '/',
};

// options for the swagger docs
var options = {
    // import swaggerDefinitions
    swaggerDefinition: swaggerDefinition,
    // path to the API docs
    apis: ['*.js'],
};

// initialize swagger-jsdoc
var swaggerSpec = swaggerJSDoc(options);

module.exports = swaggerSpec;

https://github.com/Surnet/swagger-jsdoc/blob/master/docs/GETTING-STARTED.md

https://medium.com/create-a-server-with-nodemon-express-typescript/create-a-server-with-nodemon-express-typescript-f7c88fb5ee71

https://alligator.io/workflow/nodemon/

https://dev.to/oieduardorabelo/nodejs-with-typescript-debug-inside-vscode-and-nodemon-23o7