fix: replace deprecated module.parent with require.main === module in examples

sehrishanam1 · sehrishanam1 · commit c0c092768ad6 · 2026-03-09T09:39:41.000+05:00
diff --git a/examples/auth/index.js b/examples/auth/index.js
@@ -58,7 +58,7 @@ hash({ password: 'foobar' }, function (err, pass, salt, hash) {
 // Authenticate using our plain-object database of doom!
 
 function authenticate(name, pass, fn) {
-  if (!module.parent) console.log('authenticating %s:%s', name, pass);
+  if (require.main === module) console.log('authenticating %s:%s', name, pass);
   var user = users[name];
   // query the db for the given username
   if (!user) return fn(null, null)
@@ -128,7 +128,7 @@ app.post('/login', function (req, res, next) {
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/content-negotiation/index.js b/examples/content-negotiation/index.js
@@ -40,7 +40,7 @@ function format(path) {
 app.get('/users', format('./users'));
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/cookie-sessions/index.js b/examples/cookie-sessions/index.js
@@ -19,7 +19,7 @@ app.get('/', function (req, res) {
 })
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/cookies/index.js b/examples/cookies/index.js
@@ -47,7 +47,7 @@ app.post('/', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/downloads/index.js b/examples/downloads/index.js
@@ -34,7 +34,7 @@ app.get('/files/*file', function (req, res, next) {
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/ejs/index.js b/examples/ejs/index.js
@@ -51,7 +51,7 @@ app.get('/', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/error-pages/index.js b/examples/error-pages/index.js
@@ -97,7 +97,7 @@ app.use(function(err, req, res, next){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/error/index.js b/examples/error/index.js
@@ -47,7 +47,7 @@ app.get('/next', function(req, res, next){
 app.use(error);
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/hello-world/index.js b/examples/hello-world/index.js
@@ -9,7 +9,7 @@ app.get('/', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/markdown/index.js b/examples/markdown/index.js
@@ -38,7 +38,7 @@ app.get('/fail', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/multi-router/index.js b/examples/multi-router/index.js
@@ -12,7 +12,7 @@ app.get('/', function(req, res) {
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/mvc/index.js b/examples/mvc/index.js
@@ -31,7 +31,7 @@ app.response.message = function(msg){
 };
 
 // log
-if (!module.parent) app.use(logger('dev'));
+if (require.main === module) app.use(logger('dev'));
 
 // serve static files
 app.use(express.static(path.join(__dirname, 'public')));
@@ -73,11 +73,11 @@ app.use(function(req, res, next){
 });
 
 // load controllers
-require('./lib/boot')(app, { verbose: !module.parent });
+require('./lib/boot')(app, { verbose: require.main === module });
 
 app.use(function(err, req, res, next){
   // log it
-  if (!module.parent) console.error(err.stack);
+  if (require.main === module) console.error(err.stack);
 
   // error page
   res.status(500).render('5xx');
@@ -89,7 +89,7 @@ app.use(function(req, res, next){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/online/index.js b/examples/online/index.js
@@ -55,7 +55,7 @@ app.get('/', function(req, res, next){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/params/index.js b/examples/params/index.js
@@ -68,7 +68,7 @@ app.get('/users/:from-:to', function (req, res) {
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/resource/index.js b/examples/resource/index.js
@@ -89,7 +89,7 @@ app.get('/', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/route-map/index.js b/examples/route-map/index.js
@@ -69,7 +69,7 @@ app.map({
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/route-middleware/index.js b/examples/route-middleware/index.js
@@ -84,7 +84,7 @@ app.delete('/user/:id', loadUser, andRestrictTo('admin'), function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/route-separation/index.js b/examples/route-separation/index.js
@@ -22,7 +22,7 @@ app.set('view engine', 'ejs');
 app.set('views', path.join(__dirname, 'views'));
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.use(logger('dev'));
 }
 
@@ -49,7 +49,7 @@ app.put('/user/:id/edit', user.update);
 app.get('/posts', post.list);
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/search/index.js b/examples/search/index.js
@@ -76,7 +76,7 @@ app.get('/client.js', function(req, res){
 
 (async () => {
   await initializeRedis();
-  if (!module.parent) {
+  if (require.main === module) {
     app.listen(3000);
     console.log('Express started on port 3000');
   }
diff --git a/examples/session/index.js b/examples/session/index.js
@@ -31,7 +31,7 @@ app.get('/', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/vhost/index.js b/examples/vhost/index.js
@@ -20,7 +20,7 @@ edit /etc/hosts:
 
 var main = express();
 
-if (!module.parent) main.use(logger('dev'));
+if (require.main === module) main.use(logger('dev'));
 
 main.get('/', function(req, res){
   res.send('Hello from main app!');
@@ -35,7 +35,7 @@ main.get('/:sub', function(req, res){
 var redirect = express();
 
 redirect.use(function(req, res){
-  if (!module.parent) console.log(req.vhost);
+  if (require.main === module) console.log(req.vhost);
   res.redirect('http://example.com:3000/' + req.vhost[0]);
 });
 
@@ -47,7 +47,7 @@ app.use(vhost('*.example.com', redirect)); // Serves all subdomains via Redirect
 app.use(vhost('example.com', main)); // Serves top level domain via Main server app
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/view-constructor/index.js b/examples/view-constructor/index.js
@@ -42,7 +42,7 @@ app.get('/Readme.md', function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/view-locals/index.js b/examples/view-locals/index.js
@@ -149,7 +149,7 @@ app.all('/api/*', function(req, res, next){
 */
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }
diff --git a/examples/web-service/index.js b/examples/web-service/index.js
@@ -111,7 +111,7 @@ app.use(function(req, res){
 });
 
 /* istanbul ignore next */
-if (!module.parent) {
+if (require.main === module) {
   app.listen(3000);
   console.log('Express started on port 3000');
 }

Original file line number	Diff line number	Diff line change
`@@ -40,7 +40,7 @@ function format(path) {`
`40`	`40`	`app.get('/users', format('./users'));`
`41`	`41`
`42`	`42`	`/* istanbul ignore next */`
`43`		`-if (!module.parent) {`
	`43`	`+if (require.main === module) {`
`44`	`44`	`app.listen(3000);`
`45`	`45`	`console.log('Express started on port 3000');`
`46`	`46`	`}`
Original file line number	Diff line number	Diff line change
`@@ -19,7 +19,7 @@ app.get('/', function (req, res) {`
`19`	`19`	`})`
`20`	`20`
`21`	`21`	`/* istanbul ignore next */`
`22`		`-if (!module.parent) {`
	`22`	`+if (require.main === module) {`
`23`	`23`	`app.listen(3000);`
`24`	`24`	`console.log('Express started on port 3000');`
`25`	`25`	`}`
Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,7 @@ app.post('/', function(req, res){`
`47`	`47`	`});`
`48`	`48`
`49`	`49`	`/* istanbul ignore next */`
`50`		`-if (!module.parent) {`
	`50`	`+if (require.main === module) {`
`51`	`51`	`app.listen(3000);`
`52`	`52`	`console.log('Express started on port 3000');`
`53`	`53`	`}`
Original file line number	Diff line number	Diff line change
`@@ -34,7 +34,7 @@ app.get('/files/*file', function (req, res, next) {`
`34`	`34`	`});`
`35`	`35`
`36`	`36`	`/* istanbul ignore next */`
`37`		`-if (!module.parent) {`
	`37`	`+if (require.main === module) {`
`38`	`38`	`app.listen(3000);`
`39`	`39`	`console.log('Express started on port 3000');`
`40`	`40`	`}`
Original file line number	Diff line number	Diff line change
`@@ -51,7 +51,7 @@ app.get('/', function(req, res){`
`51`	`51`	`});`
`52`	`52`
`53`	`53`	`/* istanbul ignore next */`
`54`		`-if (!module.parent) {`
	`54`	`+if (require.main === module) {`
`55`	`55`	`app.listen(3000);`
`56`	`56`	`console.log('Express started on port 3000');`
`57`	`57`	`}`
Original file line number	Diff line number	Diff line change
`@@ -97,7 +97,7 @@ app.use(function(err, req, res, next){`
`97`	`97`	`});`
`98`	`98`
`99`	`99`	`/* istanbul ignore next */`
`100`		`-if (!module.parent) {`
	`100`	`+if (require.main === module) {`
`101`	`101`	`app.listen(3000);`
`102`	`102`	`console.log('Express started on port 3000');`
`103`	`103`	`}`
Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,7 @@ app.get('/next', function(req, res, next){`
`47`	`47`	`app.use(error);`
`48`	`48`
`49`	`49`	`/* istanbul ignore next */`
`50`		`-if (!module.parent) {`
	`50`	`+if (require.main === module) {`
`51`	`51`	`app.listen(3000);`
`52`	`52`	`console.log('Express started on port 3000');`
`53`	`53`	`}`
Original file line number	Diff line number	Diff line change
`@@ -9,7 +9,7 @@ app.get('/', function(req, res){`
`9`	`9`	`});`
`10`	`10`
`11`	`11`	`/* istanbul ignore next */`
`12`		`-if (!module.parent) {`
	`12`	`+if (require.main === module) {`
`13`	`13`	`app.listen(3000);`
`14`	`14`	`console.log('Express started on port 3000');`
`15`	`15`	`}`
Original file line number	Diff line number	Diff line change
`@@ -38,7 +38,7 @@ app.get('/fail', function(req, res){`
`38`	`38`	`});`
`39`	`39`
`40`	`40`	`/* istanbul ignore next */`
`41`		`-if (!module.parent) {`
	`41`	`+if (require.main === module) {`
`42`	`42`	`app.listen(3000);`
`43`	`43`	`console.log('Express started on port 3000');`
`44`	`44`	`}`