@10up/stylelint-config

2.0.5 • Public • Published

10up Stylelint Config

At 10up, we strive to provide digital products that yield a top-notch user experience. In order to improve both our efficiency and consistency, we need to standardize what we use and how we use it. This theme scaffold allows us to share initial set up procedures to make sure all projects can get up and running as quickly as possible while closely adhering to 10up's high quality standards.

Support Level

Dependencies

  1. Node & NPM - 3rd party dependencies are managed through NPM, so you will need that installed globally
  2. Stylelint - as this is a config extension for Stylelint, you will need Stylelint installed in your main project in order for it to work.

⚠️ Dependency Warning

If you're using npm >= 7 you might not need to install Stylelint directly since it's stated as a peerDependency. If you have a version that's not equal or greater than 7, you'll need to install Stylelint manually.

Installation

First, install Stylelint:

// NPM
npm install stylelint --save-dev

// Yarn
yarn add stylelint

Then install the 10up Stylelint config:

// NPM
npm install @10up/stylelint-config --save-dev

Usage

Add the following to your .stylelintrc file:

{
  "extends": [
    "@10up/stylelint-config"
  ]
}

SCSS:

By default, 10up Stylelint Config does not support out-the-box support for scss based projects. That being said, it is not difficult to add support by following the below process:

Install the stylelint-config-standard-scss dependency:

// NPM
npm install stylelint-config-standard-scss --save-dev

You will then need to update the plugins section of your projects .stylelintrc:

{
  "extends": [
    "stylelint-config-standard-scss",
    "@10up/stylelint-config/scss"
  ]
}

A set of rules are located on the packages NPM page if you would like to override or customize the defaults further.

Selector Nested Pattern

Certain rules that apply to flavours of CSS (postcss, scss, sass, etc) can cause a conflict in your build pipelines. One such rule is Selector Nested Pattern.

By default, we ensure that any nested css uses a prefixed & symbol, as required in languages like postcss or postcss-preset-env, however you will want to turn this off if using scss.

To get around this issue, add the following to your projects, .stylelintrc

{
  "rules": [
    "selector-nested-pattern": null,
  ]
}

Webpack Setup

Run npm install stylelint-webpack-plugin --save-dev. You should already have the proper loader in postcss-loader, but if you don't install that as well. After installing stylelint and the configuration above add the following to your Webpack config:

import StyleLintPlugin from 'stylelint-webpack-plugin';

plugins: [
  new StyleLintPlugin( {
    configFile: ".stylelintrc", // if your config is in a non-standard place
    files: "src/**/*.css", // location of your CSS files
    fix: true, // if you want to auto-fix some of the basic rules
  } ),
]

Read more about these options at stylelint-webpack-plugin, the main stylelint documentation and postcss-loader. That should be all you need, but if there are any errors in this documentation, please file an issue and let us know!

Autofixing

Certain rules / violations can be fixed automatically using the --fix flag via the command line. To ensure that Stylelint fixes what it can, you can run:

stylelint path/to/css/file.css --fix`

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npm i @10up/stylelint-config

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