Can you merge JavaScript files in Magento without bundling?

Can you merge JavaScript files in Magento without bundling?

Enabling merging without also enabling bundling is not useful because Magento uses RequireJS. If you don’t enable bundling, Magento only merges RequireJS and its configuration. When you enable both bundling and merging, Magento creates a single JavaScript file:

What do you need to know about bundling in Magento?

The following code snippet from Magento’s Luma theme shows the types of files you should exclude from the bundling process. The bundle_size variable controls the file size of the generated bundles. Specifying a large bundle_size reduces the number of bundles generated, but generates larger file sizes.

Where do I Turn on Magento command line?

You can turn them on within Magento’s Admin UI in Stores > Settings > Configuration > Advanced > Developer > JavaScript Settings, or from the command line. To enable Magento’s built-in bundling from the command line:

What to do when Magento is in production mode?

Modifying the settings above when Magento is in production mode will require static view files deployment: Finally, clear the cache: For example, when Sign Static Files is disabled (which is the default: config:set dev/static/sign 0 ), the URL to a static file might look like this: /static/frontend/Magento/luma/en_US/mage/dataPost.js.

What does it mean to bundle a JavaScript file?

JavaScript bundling is an optimization technique you can use to reduce the number of server requests for JavaScript files. Bundling accomplishes this by merging multiple JavaScript files together into one file to reduce the number of page requests. JavaScript bundling does not work unless Magento is in production mode.

How to exclude a JavaScript file in Magento?

The node in the etc/view.xml file for a theme specifies the files to exclude from the Magento JavaScript bundling process. JavaScript files excluded from bundling are loaded asynchronously by RequireJS as needed. As such, you should exclude the JavaScript files you use for testing or development so that they are not loaded on every page.

How does Magento bundling reduce number of connections per page?

Magento bundling reduces the number of connections per page, but for each page request it loads all bundles, even when the requested page may only depend on files within one or two of the bundles. Performance improves after the browser caches the bundles.

How long does it take to load Magento bundle?

At Slow 3G connectivity, it takes about 44 seconds to load all the bundles for the homepage of a clean Magento installation. The same is true when merging the bundles into a single file. Users could still wait around 42 seconds for the initial page load as shown here:

Which is native Magento mechanism distributes all JavaScript assets?

This is a native Magento mechanism that combines all assets present in the system and distributes them among same-sized bundles (bundle_0.js, bundle_1.js … bundle_x.js): Better, but the browser still loads ALL the JavaScript bundles, not just the ones needed.

How to reduce the number of server requests in Magento?

Out of the box, Magento provides two ways to reduce the number of server requests: merging and bundling. These settings are turned off by default. You can turn them on within Magento’s Admin UI in Stores > Settings > Configuration > Advanced > Developer > JavaScript Settings, or from the command line.