How to execute the start script with Nodemon - node.js

Question

How can I execute the start script from a package.json file with Nodemon?

Answer 1

This will be a simple command for this
nodemon --exec npm start

Answer 2

In package json:
{
"name": "abc",
"version": "0.0.1",
"description": "my server",
"scripts": {
"start": "nodemon my_file.js"
},
"devDependencies": {
"nodemon": "~1.3.8",
},
"dependencies": {
}
}
Then from the terminal you can use npm start
Nodemon installation: https://www.npmjs.com/package/nodemon

Answer 3

I have a TypeScript file called "server.ts", The following npm scripts configures Nodemon and npm to start my app and monitor for any changes on TypeScript files:
"start": "nodemon -e ts --exec \"npm run myapp\"",
"myapp": "tsc -p . && node server.js",
I already have Nodemon on dependencies. When I run npm start, it will ask Nodemon to monitor its files using the -e switch and then it calls the myapp npm script which is a simple combination of transpiling the typescript files and then starting the resulting server.js. When I change the TypeScript file, because of -e switch the same cycle happens and new .js files will be generated and executed.

Answer 4

I use Nodemon version 1.88.3 in my Node.js project.
To install Nodemon, see in https://www.npmjs.com/package/nodemon.
Check your package.json, see if "scripts" has changed like this:
"scripts": {
"dev": "nodemon server.js"
},
server.js is my file name, you can use another name for this file like app.js.
After that, run this on your terminal: npm run dev

Answer 5

Use -exec:
"your-script-name": "nodemon [options] --exec 'npm start -s'"

Answer 6

In package json:
"scripts": {
"start": "node index",
"dev": "nodemon index"
},
"devDependencies": {
"nodemon": "^2.0.2"
}
And in the terminal for developing:
npm run dev
And for starting the server regularly:
npm start

Answer 7

First change your package.json file,
"scripts":
{
"start": "node ./bin/www",
"start-dev": "nodemon ./app.js"
},
After that, execute command
npm run start-dev

Answer 8

In package.json file. change file like this
"scripts":{
"start": "node ./bin/www",
"start-dev": "nodemon ./app.js"
},
and then execute npm run start-dev

Answer 9

Add this to script object from your project's package.json file
"start":"nodemon index.js"
It should be like this
"scripts": {
"start":"nodemon index.js"
}

Answer 10

Nodemon emits events upon every change in state; start, restart crash, etc. You can add a Nodemon configuration file (nodemon.json) like so:
{
"events": {
"start": "npm run *your_file*"
}
}
Read more in Nodemon events — run tasks at server start, restart, crash, exit.

Answer 11

If globally installed then
"scripts": {
"start": "nodemon FileName.js(server.js)",
},
Make sure you have installed nodemon globally:
npm install -g nodemon
Finally, if you are a Windows user, make sure that the security restriction of the Windows PowerShell is enabled.

Answer 12

I simply use 'npx' in the terminal to set up nodemon and execute it
npx nodemon

Answer 13

You can also install nodemon globally for frequent use:
npm i nodemon -g or sudo npm i nodemon -g
then edit your package.json:
"scripts": {
"start": "node index.js",
"dev": "nodemon index.js"
},
Generally, 'dev' specifies developmental use (npm run dev).

Answer 14

It will depend on types of your Nodemon installation. If you install Nodemon globally by using commands (npm install nodemon --global or npm install nodemon -g), you do not have to specify any script for Nodemon in your package.json file. Just executing command nodemon index.js will run your project.
But if you install Nodemon locally by command npm install nodemon then you have to specify the script. If you name it as start then npm run start or npm start will trigger the server to run.
// Absolutely no need for global installation
"scripts": {
"start": "nodemon index.js"
}

Answer 15

{
"name": "backend",
"version": "0.0.0",
"private": true,
"scripts": {
"start": "nodemon ./bin/www"
},
"dependencies": {
"bcrypt": "^5.0.1",
"cookie-parser": "~1.4.4",
"debug": "~2.6.9",
"express": "~4.16.1",
"hbs": "^4.1.2",
"http-errors": "~1.6.3",
"morgan": "~1.9.1",
"nodemon": "^2.0.12"
}
}
use "nodemon ./bin/www" scripts > start
eg:
"scripts": {
"start": "nodemon ./bin/www"
},

Answer 16

Try this, with watch:
nodemon --exec ts-node pathtoapp/filewithserver.ts -e ts
my project example: nodemon --exec ts-node src/server.ts -e ts

Answer 17

To avoid a global install, add Nodemon as a dependency, then...
package.json
"scripts": {
"start": "node ./bin/www",
"start-dev": "./node_modules/nodemon/bin/nodemon.js ./bin/www"
},

Answer 18

If you have nodemon installed globally, simply running nodemon in your project will automatically run the start script from package.json.
For example:
"scripts": {
"start": "node src/server.js"
},
From the nodemon documentation:
nodemon will also search for the scripts.start property in package.json (as of nodemon 1.1.x).

Answer 19

I know it's 5 years late, if you want to use nodemon.json you may try this,
{
"verbose": true,
"ignore": ["*.test.js", "fixtures/*"],
"execMap": {
"js": "electron ." // 'js' is for the extension, and 'electron .' is command that I want to execute
}
}
The execMap will execute like a script in package.json, then you can run nodemon js

Answer 20

You can use this instead of npm start :
npx env-cmd nodemon

Answer 21

You can do this one:
nodemon --exec ts-node src/app.ts
This will run the app.ts for you forever

Answer 22

First install package for nodemon as dev dependencies using
$ npm i nodemon -D
Then your package.json will have:
"devDependencies": {
"nodemon": "^2.0.20"
}
Then you can edit change package.json scripts part as
"scripts": {
"start": "node app.js",
"dev": "nodemon app.js"
}
Then you can use command:
$ npm run dev

Answer 23

You can also install nodemon as a development dependency:
npm install --save-dev nodemon or using yarn: yarn add nodemon -D.
With a local installation, nodemon will not be available in your system path or you can't use it directly from the command line. Instead, the local installation of nodemon can be run by calling it from within an npm script (such as npm start) or using npx nodemon.
In other words just run it with npx nodemon index.js

Answer 24

Just use the command : npx nodemon app.js
This is very simple ! and we can run the below command without altering the package.json file in your project