Concat and minify JS files in Node

Question

Is there any module in NodeJS to concatenate and minify JavaScript files?

Answer 1

You'll be better using something like gulp / webpack to concat/organize/bundle your assets.

---

In order to join js file you can do as its done in twitter bootstrap makefile

cat js/bootstrap-transition.js js/bootstrap-alert.js js/bootstrap-button.js js/bootstrap-carousel.js js/bootstrap-collapse.js js/bootstrap-dropdown.js js/bootstrap-modal.js js/bootstrap-tooltip.js js/bootstrap-popover.js js/bootstrap-scrollspy.js js/bootstrap-tab.js js/bootstrap-typeahead.js > docs/assets/js/bootstrap.js

This is just a concatenation of files with an output to a js file

Then you can install uglify-js to minify js:

npm -g install uglify-js

And perform this command with your path/file.js ofc:

uglifyjs docs/assets/js/bootstrap.js -nc > docs/assets/js/bootstrap.min.js

As mentioned in comments since uglifyjs 2 you could also do:

uglifyjs --compress --mangle -- input.js