README

<head>
    <title>Preloading things</title>

    @preload
</head>

This package exposes a @preload Blade directive that renders preload and prefetch links based on the contents in mix-manifest.json. Declaring what should be preloaded or prefetched is simple, just make sure preload or prefetch is part of the chunk name.

If this is your mix manifest:

{
    "/js/app.js": "/js/app.js",
    "/css/app.css": "/css/app.css",
    "/css/prefetch-otherpagecss.css": "/css/prefetch-otherpagecss.css",
    "/js/preload-biglibrary.js": "/js/preload-biglibrary.js",
    "/js/vendors~preload-biglibrary.js": "/js/vendors~preload-biglibrary.js"
}

The following links will be rendered:

<link rel="prefetch" href="/css/prefetch-otherpagecss.css" as="style">
<link rel="preload" href="/js/preload-biglibrary.js" as="script">
<link rel="preload" href="/js/vendors~preload-biglibrary.js" as="script">

Not sure what this is about? Read Addy Osmani's article Preload, Prefetch And Priorities in Chrome.

In addition to the above, you should set your config values appropriately to add or remove more assets from preload/prefetch

Support

Installation

You can install the package via composer:

composer require mkinyua53/laravel-mix-preload

Publish the config

php artisan vendor:publish --tag=preloader-config

Usage

Add a @preload directive to your applications layout file(s).

<!doctype html>
<html>
    <head>
        ...
        @preload
    </head>
    <body>
        ...
    </body>
</html>

You can determine which scripts need to be preloaded or prefetched by making sure preload or prefetch is part of their file names. You can set the file name by creating a new entry in Mix, or by using dynamic imports.

Adding a second entry

By default, Laravel sets up Mix with a single app.js entry. If you have another script outside of app.js that you want to have preloaded, make sure preload is part of the entry name.

mix
    .js('resources/js/app.js', 'public/js');
    .js('resources/js/preload-maps.js', 'public/js');

If you want to prefetch the script instead, make sure prefetch is part of the entry name.

mix
    .js('resources/js/app.js', 'public/js');
    .js('resources/js/prefetch-maps.js', 'public/js');

Using dynamic imports with custom chunk names

If you want to preload a chunk of your application scripts, make sure preload is part of the chunk name. You can use Webpack's magic webpackChunkName comment to set the module's chunk name.

import('./maps' /* webpackChunkName: "preload-maps" */).then(maps => {
    maps.init();
});

The same applies to prefetching.

import('./maps' /* webpackChunkName: "prefetch-maps" */).then(maps => {
    maps.init();
});

Testing

composer test

Credits

License

The MIT License (MIT). Please see License File for more information.

mkinyua53/laravel-mix-preloader

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