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NPM NPM NPM

Laravel Mix Critical

This extension provides instant Critical support to your Mix (v2.1 and up) builds.

Usage

First, install the extension.

npm install laravel-mix-criticalcss --save-dev

Then, require it within your webpack.mix.js file, like so:

let mix = require('laravel-mix');

require('laravel-mix-criticalcss');

mix
    .js('resources/assets/js/app.js', 'public/js')
    .less('resources/assets/less/app.less', 'public/css')
    .criticalCss({
        enabled: mix.inProduction(),
        paths: {
            base: 'https://url-of-where-criticalcss-is-extracted.com/',
            templates: './css/critical', //Where css files need to be written, all these paths are relative to /public
                                         //So the example path here will be public/css/critical       
            suffix: '_critical.min'
        },
        urls: [
            { url: 'blog', template: 'blog' },
        ],
        //Now using https://github.com/addyosmani/critical v4.0.1
        options: {
            //It's important to note here you should NOT set inline:true, this will break the whole system.
            width:411,
            height:823,
            penthouse:{
                timeout:1200000
            }
        },
    });

// generates `./where-critical-css-file-needs-to-be-written/blog_critical.min.css`

And you're done! Compile everything down with npm run prod. npm run dev will not generate any critical css! Also make sure that your paths are correct and point to valid urls / segments of your website, whenever criticalcss has issues detecting the url, it might throw a console error!

Options

Only urls is required - all other options are optional. If you don't want to use the paths object you can simply define your base and templates in the url and template options from urls

Name Type Default Description
enabled boolean mix.inProduction() If generating Critical CSS should be enabled
paths object {} Takes 3 arguments base ( src-url ), templates ( folder where critical css files should be written ) and suffix ( filename pattern )
urls array [] An array of url objects, each with a url and template key: { url: 'http://example.com', template: 'index' }
options object {} An object of Critical options

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