NodeJs : On source code changes autoreload server


Nodemon reload automatically

While writing/updating your nodejs code, it's very tedious to restart the node server every time to check changes detection for API. Hence we have to use some techniques which will help us to solve this issue and it will restart the node server automatically reload your program when you modify any file in the source code. so no need to worry about testing the changes in realtime.

For Autoreload on nodejs source code changes, will use the nodemon pm, which is a tool that helps develop node.js based applications by automatically restarting the node application when source code changes in the directory is detected.

nodemon does not require any additional changes to your code or method of development. nodemon is a replacement wrapper for node. To use nodemon, replace the word node on the command line when executing your script.

Installing nodemon globally

npm install -g nodemon (or npm i -g nodemon)

Installing nodemon locally

In case you don't want to install it globally npm install --save-dev nodemon (or npm i -D nodemon)

Using nodemon

Run your program with nodemon entry.js (or nodemon entry) This replaces the usual use of node entry.js (or node entry).

You can also add your nodemon startup as an npm script, which might be useful if you want to supply parameters and not type them out every time.

Add package.json:

scripts": { "start": "nodemon entry.js -devmode -something 1" }

This way you can just use npm start from your console.



Browsersync is a tool that allows for live file watching and browser reloading. It's available as an NPM package.


To install Browsersync you'll first need to have Node.js and NPM installed. For more information see the SO documentation on Installing and Running Node.js.

Once your project is set up you can install Browsersync with the following command:

$ npm install browser-sync -D

This will install Browsersync in the local node_modules directory and save it to your developer dependencies.

If you'd rather install it globally using the -g flag in place of the -D flag.

Windows Users

If you're having trouble installing Browsersync on Windows you may need to install Visual Studio so you can access the build tools to install Browsersync. You'll then need to specify the version of Visual Studio you're using like so:

$ npm install browser-sync --msvs_version=2013 -D

This command specifies the 2013 version of Visual Studio.

Basic Usage

To automatically reload your site whenever you change a JavaScript file in your project use the following command:

$ browser-sync start --proxy "" --files "**/*.js"

Replace with the web address that you are using to access your project. Browsersync will output an alternate address that can be used to access your site through the proxy.

Advanced Usage

Besides the command line interface that was described above Browsersync can also be used with Grunt.js and Gulp.js.


Usage with Grunt.js requires a plugin that can be installed like so:

$ npm install grunt-browser-sync -D

Then you'll add this line to your gruntfile.js:



Browsersync works as a CommonJS module, so there's no need for a Gulp.js plugin. Simply require the module like so:

var browserSync = require('browser-sync').create();

You can now use the Browsersync API to configure it to your needs.


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