In beta, it works only for Android devices...

For Android :

Install

npm install -g cordova-livereload

Usage

In a cordova based project directory

cordova-livereload 

From another directory

cordova-livereload <path to a cordova-based project>

Choose devices and / or emulator to livereload

cordova-livereload -list-devices 

or

cordova-livereload -l 

With custom cordova commands

cordova-livereload cordova run android --nobuild --target=Android_7.1.1