mlut documentation

1 #start Getting started

There are 2 ways to start using mlut:

  • toolkit: with CLI or plugin
  • assembled CSS distributive
Source: content/main.css, line 1

1.1 #start.main Main package

The main package contains CLI and assembled CSS distributive

Source: content/main.css, line 14

1.1.1 #start.main.install Installation

NPM

npm i mlut -D

CDN

CSS only with demo theme:

<link href="https://unpkg.com/mlut@latest/dist/mlut-demo-theme.min.css" rel="stylesheet">
Source: content/main.css, line 22

1.1.2 #start.main.usage Usage

Distributive

You can get assembled mlut code and include it to your project. There are some ways to get a distributive.

  • just plug in with CDN
  • if used npm, files are in node_modules/@mlut/core/dist/

Add the files to your page like here:

<link href="css/mlut-demo-theme.min.css" rel="stylesheet">

And just use classes in the markup:

<div class="D-g Gtc-t3">
  <div class="Bd P2u">
    <h3>Simple text</h3>

Toolkit

You can use the toolkit in 2 modes

  • JIT: generate utilities on demand. The JIT engine scans your markup and generates only the utilities you use. This is current and recommended mode of working with mlut. Here you can use our CLI or a plugin for bundlers
  • AOT: generate utilities using Sass tools only. You specify in the Sass configuration what utilities you want and the generator creates them (usually more than you need). This is legacу mode, but it is still working and supported. We have no plans to deprecate it for now

CLI for the JIT mode:

Usage:
  mlut [-i input.scss] [-o output.css] [--watch] [options...]

Options:
  -h, --help            Print this help message
  -i, --input           Input Sass file
  -o, --output          Output CSS file
  -w, --watch           Watch for changes and rebuild as needed
  -m, --minify          Generate minified CSS file
      --content         Paths to content with markup
      --autoprefixer		  Add vendor prefixes to CSS properties. The 'autoprefixer' is required
      --no-merge-mq     Prevent merging of CSS media queries during minification

In the input Sass file, you can customize mlut and write your own styles. Input file is optional, but if you use it, you must import mlut

@use 'mlut' with (
  $breakpoints: (
    'xxl': 1600px,
  ),
  $colors: (
    'red0': #f20,
  ),
);

.complex-block {
  // CSS
}

You can add the JIT options here too. Options must be a valid JSON, but single quotes is allowed. Paths will be resolved relative to the JIT engine working directory

@use 'mlut' with (
  $jit: (
    'output': 'src/assets/css/style.css',
    'content': [
      'src/*.ejs', 'src/assets/js/*.js'
    ]
  ),
);

To start the build process:

npx mlut -i src/assets/sass/style.scss -w

Add the compiled CSS to your template, then start adding mlut classes to your markup

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="/assets/css/style.css" rel="stylesheet">
  </head>
  <body class="M0">
    <h1 class="C-red Fnw800 P2u">
      Lorem Ipsum
    </h1>
  </body>
</html>
Source: content/main.css, line 41

1.2 #start.integrations Integrations

mlut has a plugins for Rollup, Vite and Webpack that based on unplugin

Source: content/main.css, line 135

1.2.1 #start.integrations.install Installation 

npm i -D @mlut/plugins sass-embedded

When using this package, you will need to install Sass separately. We recommend sass-embedded, but regular sass is also suitable.

This allows you to control the versions of all your dependencies, and to choose which Sass implementation to use.

Source: content/main.css, line 145

1.2.2 #start.integrations.options Options

The plugin options are similar to the mlut CLI options

interface Options {
  output: string,
  input?: string,
  minify?: boolean,
  autoprefixer?: boolean,
  noMergeMq?: boolean,
}

You can add the options in your input Sass file too. Options must be a valid JSON, but single quotes is allowed. Paths will be resolved relative to the JIT engine working directory

@use '@mlut/core' with (
  $jit: (
    'output': 'dist/assets/style.css',
    'minify': true,
    'autoprefixer': true
  ),
);
Parameters:
  • output
    output CSS file
  • input
    input Sass file when you import mlut, configure it and write other CSS
  • minify
    generate minified CSS. For this option to work, you need 1 of the following minifiers: csso, lightningcss, clean-css, cssnano or esbuild. You may already have it installed. When using lightningcss, you will also need to install browserslist
  • autoprefixer
    whether to add vendor prefixes to CSS properties. You need the autoprefixer package or lightningcss for this option to work
  • noMergeMq
    prevent merging of CSS media queries during minification. Relevant only when using the csso minifier
Source: content/main.css, line 161

1.2.3 #start.integrations.usage Usage

Import the plugin for the appropriate bundler from the @mlut/plugins package as in one of the examples below. You can find more detailed examples using dev-server and livereload in the plugin tests directory

We also recommend adding the input file right away:

// style.scss
@use '@mlut/core';

// your CSS or mlut config
Source: content/main.css, line 198

1.2.3.1 #start.integrations.usage.rollup Rollup

Update the config:

// rollup.config.js
import { rollup } from '@mlut/plugins';

const mlut = rollup({
  output: 'dist/style.css',
  // other options...
});

export default {
  // rollup config...
  plugins: [mlut],
};

Add the compiled CSS to your index.html

<link href="assets/style.css" rel="stylesheet">

Start your build process:

rollup --config rollup.config.js -w

Add the mlut classes to your components:

// index.js
const component = `
	<div class="wrapper Mm7">
		<h1 class="Fns5r C-purple">Rollup plugin test!</h1>
		<p>Lorem about mlut</p>
	</div>
`;
Source: content/main.css, line 216

1.2.3.2 #start.integrations.usage.vite Vite

Update the config:

// vite.config.js
import { vite } from '@mlut/plugins';

const mlut = vite({
  output: 'dist/assets/style.css',
  // other options...
});

export default defineConfig(() => {
  return {
    // vite config...
    plugins: [mlut],
  }
});

Add the compiled CSS to your index.html. Note that the path to it should be the same as in the production build:

<link href="assets/style.css" rel="stylesheet">

Start your build process:

vite

Add the mlut classes to your markup:

<h1 class="C-red Fnw800 P2u">Lorem Ipsu</h1>
Source: content/main.css, line 259

1.2.3.3 #start.integrations.usage.webpack Webpack

Update the config:

// webpack.config.js
import { webpack } from '@mlut/plugins';

const mlut = webpack({
  output: 'dist/style.css',
  // other options...
});

export default {
  // webpack config...
  plugins: [mlut],
};

Add the compiled CSS to your index.html

<link href="assets/style.css" rel="stylesheet">

Start your build process:

webpack watch

Add the mlut classes to your components:

// index.js
const component = `
	<div class="wrapper xl_Mm8">
		<h1 class="Fns5r xl_C-red">Webpack plugin test</h1>
		<p>Lorem about mlut and Webpack</p>
	</div>
`;
Source: content/main.css, line 298