'nodemon not working properly

I am running my nodejs app by npm start

I just installed nodemon by sudo npm install -g nodemon so that i can get my server restarted when i save changes to files.

But when i try to start the server, something like this

nodemon ./app.js localhost 3000 or nodemon start localhost 3000

I get this as output

LM-SJC-00871929:webapp gdeep$ nodemon ./app.js localhost 3000
28 May 23:34:30 - [nodemon] v1.1.1
28 May 23:34:30 - [nodemon] to restart at any time, enter `rs`
28 May 23:34:30 - [nodemon] watching: *.*
28 May 23:34:30 - [nodemon] starting `node ./app.js localhost 3000`

but when i go to my webpage, i get

Oops! Google Chrome could not connect to localhost:3000. What am i doing wrong?

App.js here http://collabedit.com/t35dy



Solution 1:[1]

Here's what I did to make nodemon update correctly:

nodemon index.js -L

The -L flag stands for legacyWatch, here's an explanation from the official doc:

In some networked environments (such as a container running nodemon reading across a mounted drive), you will need to use the legacyWatch: true which enables Chokidar's polling.

https://www.npmjs.com/package/nodemon#application-isnt-restarting

Solution 2:[2]

In my case, I had to install nodemon globally. Use this command to do so..

npm install -g nodemon

If you're using Linux you may need to prefix the command with the sudo keyword for administration access..

sudo npm install -g nodemon

Solution 3:[3]

try running nodemon ./app.js 3000 or nodemon start 3000

Solution 4:[4]

For Express.js 4,
use nodemon
or
nodemon bin/www

Solution 5:[5]

Add following code in your code

  1. app.js

    app.listen(3000, function(){
        console.log("info",'Server is running at port : ' + 3000);
    });
    
  2. package.json

    nodemon app.js 
    

Then run npm start from the command line.

Solution 6:[6]

  1. npm i nodemon
  2. Edit your Package.json file:- set start to nodemon:
"scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "nodemon server.js"
}
  1. Run npm start to try the server

Solution 7:[7]

If you are using express4, the easiest way is to navigate to package.json and change "scripts": { "start": "node ./bin/www" }

to "scripts": { "start": "nodemon ./bin/www" }

Solution 8:[8]

For Express 4; Just run

nodemon

command (with out any args) on the directory; this works for me.

Solution 9:[9]

You might also run into the issue of having an empty .nodemonignore.

Solution 10:[10]

thanks you need to type this after to enter in the folder application with

cd your_project_folder

sudo nodemon bin/www

Solution 11:[11]

try

npm install --save-dev nodemon

and then in package.json file keep like this

"scripts": {
    "start": "nodemon",
    "test": "echo \"Error: no test specified\" && exit 1"
  },

instead of npx nodemon, which takes more time

Solution 12:[12]

Certain child processes related to your parent process may not be closed. Try to kill all the child processes.

Ref: https://github.com/remy/pstree

Solution 13:[13]

Use single quotation for multi-value args like `--exec'.

e.g. I changed "nodemon --exec yarn build-langs" to "nodemon --exec 'yarn build-langs'" and worked.

Solution 14:[14]

 "scripts": {
    "start": "nodemon app.js"
  },

check it, if it's true or not