Automate this browserify command whenever js file is changed

Question

Whenever I change function.js, I have to manually run the command below to browserify function.js into a bundle.js

$ browserify function.js --standalone function > bundle.js

How can this step be automated such that the command is run automatically in the background whenever function.js is modified?

I am using node.js v6.9 with Webstorm 2016.2 on Windows 10.

Answer 1

This is very easy with watchify, Just install npm i -D watchify

then update your 'package.json' file with a command "watch" : "npx watchify <source>.js -o <output>.js"

And your are ready to go with just running your npm command npm run watch.