stylelint-stylus

Stylelint plugin for Stylus.

This plugin is still in an experimental state

:name_badge: Introduction

Stylelint plugin for Stylus.

This plugin allows us to check the Stylus with Stylelint.

• Finds the many wrong use of selector, declaration, at-rule and more using the rules of Stylelint.
• Finds the violations in coding style for Stylus.
• Use the fix option to automatically fixes the many stylistic violations.

Stylelint editor integrations are useful to check your code in real-time.

You can check on the Online DEMO.

:cd: Installation

Via npm:

 npm install --save-dev stylelint stylelint-stylus

:book: Usage

stylelint-stylus is a plugin for Stylelint, so it is for use with Stylelint.
If you are not using Stylelint, start by using Stylelint.

Configuration

Use .stylelintrc.* or stylelint.config.js file to configure rules. See also: https://stylelint.io/user-guide/configure.

Example stylelint.config.js:

 module.exports = {
  extends: [
    // add more generic rulesets here, such as:
    // "stylelint-config-standard",
    "stylelint-stylus/standard",
  ],
  rules: {
    // override/add rules settings here, such as:
    // "stylus/declaration-colon": "never"
  },
};

If you want to set all the rules yourself, set as follows.

 module.exports = {
  plugins: [
    // add this plugin here:
    "stylelint-stylus",
  ],
  // makes the stylus files parseable.
  overrides: [
    {
      files: ["*.stylus", "*.styl", "**/*.stylus", "**/*.styl"],
      customSyntax: "postcss-styl",
    },
  ],
  rules: {
    // add rules settings here, such as:
    "stylus/declaration-colon": "never",
    "stylus/pythonic": "always",
    "stylus/selector-list-comma": "never",
    "stylus/semicolon": "never",
    "stylus/single-line-comment": "always",
  },
};

:computer: Editor integrations

Visual Studio Code

Use the stylelint.vscode-stylelint extension that Stylelint provides officially.

You have to configure the stylelint.validate option of the extension to check .stylus files, because the extension does not check the *.stylus file by default.

Example .vscode/settings.json:

{
  "stylelint.validate": [
      ...,
      // ↓ Add "stylus" language.
      "stylus"
  ]
}

Custom Syntax

If you are using stylelint v13, you need to do the following:

Set custom syntax for parsing Stylus. With the following setting, .styl and <style lang="stylus"> are parsed by postcss-styl.

• via CLI

   stylelint ... --custom-syntax stylelint-stylus/custom-syntax
  

• with VSCode extension

   {
    "stylelint.customSyntax": "stylelint-stylus/custom-syntax",
    "stylelint.validate": [
      ...,
      // ↓ Add "stylus" language.
      "stylus"
    ]
  }
  

:arrow_heading_up: RuleSets

This plugin provides some rulesets. It can be used by specifying it in the extends of the Stylelint configuration.

• "stylelint-stylus/recommended" ... Turns Off rules that cannot be used with the Stylus within stylelint (WIP). And turns On rules that possible errors rules within stylelint-stylus.
• "stylelint-stylus/standard" ... Above, plus rules to improve code readability.

:white_check_mark: Rules

You can use the rules built into Stylelint and the rules provided by this plugin.

The --fix option on the command line automatically fixes problems reported by rules which have a wrench :wrench: below.

Possible Errors Rules

These rules relate to possible syntax or logic errors in Stylus.

	Rule ID	Description	RuleSet
	stylus/at-rule-no-unknown	disallow unknown at-rules.	/recommended
	stylus/property-no-unknown	disallow unknown properties.	/recommended
	stylus/selector-type-no-unknown	disallow unknown type selectors.	/recommended
	stylus/single-line-comment-no-empty	disallow empty single-line comments.	/recommended

Standard Rules

These rules relate to style guidelines.

	Rule ID	Description	RuleSet
:wrench:	stylus/at-extend-style	enforces @extend style.	/standard
:wrench:	stylus/at-rule-empty-line-before	require or disallow an empty line before at-rules.	/standard
:wrench:	stylus/at-rule-name-space-after	require a single space after at-rule names.	/standard
:wrench:	stylus/block-closing-brace-empty-line-before	require or disallow an empty line before the closing brace of blocks.	/standard
:wrench:	stylus/block-closing-brace-newline-after	require a newline or disallow whitespace after the closing brace of blocks.	/standard
:wrench:	stylus/block-closing-brace-newline-before	require a newline or disallow whitespace before the closing brace of blocks.	/standard
	stylus/block-closing-brace-space-after	require a single space or disallow whitespace after the closing brace of blocks.
:wrench:	stylus/block-closing-brace-space-before	require a single space or disallow whitespace before the closing brace of blocks.	/standard
:wrench:	stylus/block-opening-brace-newline-after	require a newline after the opening brace of blocks.	/standard
:wrench:	stylus/block-opening-brace-space-after	require a single space or disallow whitespace after the opening brace of blocks.	/standard
:wrench:	stylus/block-opening-brace-space-before	require a single space or disallow whitespace before the opening brace of blocks.	/standard
:wrench:	stylus/color-hex-case	enforce lowercase or uppercase for hex colors.	/standard
:wrench:	stylus/declaration-colon	require or disallow declaration colons.	/standard
:wrench:	stylus/hash-object-property-comma	require or disallow commas in hash object properties.	/standard
:wrench:	stylus/indentation	enforces indentation.	/standard
:wrench:	stylus/media-feature-colon	require or disallow media feature colons.	/standard
:wrench:	stylus/no-at-require	disallow @require, use @import instead.	/standard
:wrench:	stylus/no-eol-whitespace	disallow end-of-line whitespace.	/standard
:wrench:	stylus/number-leading-zero	require or disallow a leading zero for fractional numbers less than 1.	/standard
:wrench:	stylus/number-no-trailing-zeros	disallow trailing zeros in numbers.	/standard
:wrench:	stylus/pythonic	enforces pythonic or brace style.	/standard
:wrench:	stylus/selector-list-comma-newline-after	require a newline or disallow whitespace after the commas of selector lists.	/standard
:wrench:	stylus/selector-list-comma-newline-before	require a newline or disallow whitespace before the commas of selector lists.
:wrench:	stylus/selector-list-comma-space-after	require a single space or disallow whitespace after the commas of selector lists.
:wrench:	stylus/selector-list-comma-space-before	require a single space or disallow whitespace before the commas of selector lists.	/standard
:wrench:	stylus/selector-list-comma	require or disallow selector list comma.	/standard
:wrench:	stylus/selector-pseudo-class-case	enforce lowercase or uppercase for pseudo-class selectors.	/standard
:wrench:	stylus/semicolon	require or disallow semicolon.	/standard
:wrench:	stylus/single-line-comment-double-slash-space-after	require or disallow whitespace after the double-slash of single-line comments.	/standard
:wrench:	stylus/single-line-comment	enforces comment style where single-line comments are allowed.	/standard

License

See the LICENSE file for license rights and limitations (MIT).