Magepack - Bundler 🚀

Version 2.0.0 of Magepack released, with greater performance results and easier usage!

Magepack is a bold attempt in making Magento 2 frontend as fast as never before. It builds on experiences gained with Advanced JavaScript bundling guide and Baler to provide the best of both worlds - ease of use and superior performance.

Top highlights*

Up to 91 points mobile score in Google Lighthouse.
Up to 98% reduction in JavaScript file requests (from 177 to only 3).
Up to 44% reduction in transferred JavaScript size.
Up to 75% reduction in total load time.
Works with Magento's JavaScript minification and merging enabled.
Uses custom solution (inspired by Baler) instead of RequireJs optimizer which is way more flexible, faster, produces smaller bundle and doesn't break on missing files.

* All data gathered on clean Magento 2 with sample data installed.

Installing

Here are the requirements for Magepack to work:

You need Node.js version 10 or higher installed.
If you are using Magento 2.3.5 or lower, you need to have mixins.js module patched (patch provided and explained here).
If you are using Magento 2.3.3 or lower, you need jquery.cookie module shim (patch provided and explained here).
Magepack Magento module installed.

Install with npm:

npm install -g magepack

Install with yarn:

yarn global add magepack

Usage

Usage: magepack [bundle] <options...>

Options:
  -v, --version       Output the current version.
  -h, --help          Show this command summary.

Commands:
  bundle [options]    Bundle JavaScript files using given configuration file.

Bundling

Once you have generated bundler configuration, the next step would be to trigger the actual optimization after static content deploy stage has finished by running the following in shop root directory:

magepack bundle

This command will iterate over each deployed locale (excluding Magento/blank) and prepare bundles for each of them.

There is one optional param you can set: -g, --glob - Glob pattern defining where to look for locales to bundle.

Enabling

Once you made sure Magepack Magento module is installed, what is left is to enable it via admin panel under Stores->Configuration->Advanced->Developer or CLI:

bin/magento config:set dev/js/enable_magepack_js_bundling 1

and clearing the cache:

bin/magento cache:clean

Now the shop should be way faster then before 🚀 You can (and should) even enable all Magento's performance optimizations (except JavaScript bundling of course) for even better results.

Results

Here are our tests results, testing homepage on local development environment with clean Magento 2.3.4, sample data, all caches enabled and following optimizations:

JavaScript:
- Merge JavaScript Files - Yes.
- Enable JavaScript Bundling - No.
- Minify JavaScript Files - Yes.
- Move JS code to the bottom of the page - Yes.
CSS:
- Merge CSS Files - Yes.
- Minify CSS Files - Yes.
- Use CSS critical path - Yes.
Templates:
- Minify Html - Yes.

No Bundling

Bundling with Baler

Please not that Baler does not currently support Magento's JavaScript merging and minification.

Bundling with Magepack

Debugging

Before rising an issue please follow below guidelines:

Problems with bundling:
- Make sure there are no JavaScript errors thrown by the shop which may prevent Magepack from collecting the dependencies.
Problems with generation:
- Make sure all locales are properly deployed and no files are missing.
Try running the command with --debug or -d flag that makes Magepack output more information about the ongoing process which should make debugging easier.

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

License

This project is licensed under the OSL-3.0 license - see the LICENSE.md file for details

Acknowledgments

Authors of Advanced JavaScript bundling guide.
Authors of Baler.
Magento Community Engineering Slack.

mygento/magepack_bundler