stylelint

stylelint documentation

Version in MegaLinter: 16.12.0
Visit Official Web Site
See How to configure stylelint rules
- If custom .stylelintrc.json config file isn't found, .stylelintrc.json will be used
See How to disable stylelint rules in files
See Index of problems detected by stylelint

Configuration in MegaLinter

Enable stylelint by adding CSS_STYLELINT in ENABLE_LINTERS variable
Disable stylelint by adding CSS_STYLELINT in DISABLE_LINTERS variable

Enable autofixes by adding CSS_STYLELINT in APPLY_FIXES variable

Variable	Description	Default value
CSS_STYLELINT_ARGUMENTS	User custom arguments to add in linter CLI call Ex: `-s --foo "bar"`
CSS_STYLELINT_COMMAND_REMOVE_ARGUMENTS	User custom arguments to remove from command line before calling the linter Ex: `-s --foo "bar"`
CSS_STYLELINT_FILTER_REGEX_INCLUDE	Custom regex including filter Ex: `(src\\|lib)`	Include every file
CSS_STYLELINT_FILTER_REGEX_EXCLUDE	Custom regex excluding filter Ex: `(test\\|examples)`	Exclude no file
CSS_STYLELINT_CLI_LINT_MODE	Override default CLI lint mode - `file`: Calls the linter for each file - `list_of_files`: Call the linter with the list of files as argument - `project`: Call the linter from the root of the project	`list_of_files`
CSS_STYLELINT_FILE_EXTENSIONS	Allowed file extensions. `"*"` matches any extension, `""` matches empty extension. Empty list excludes all files Ex: `[".py", ""]`	`[".css", ".scss", ".saas"]`
CSS_STYLELINT_FILE_NAMES_REGEX	File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files Ex: `["Dockerfile(-.+)?", "Jenkinsfile"]`	Include every file
CSS_STYLELINT_PRE_COMMANDS	List of bash commands to run before the linter	None
CSS_STYLELINT_POST_COMMANDS	List of bash commands to run after the linter	None
CSS_STYLELINT_UNSECURED_ENV_VARIABLES	List of env variables explicitly not filtered before calling CSS_STYLELINT and its pre/post commands	None
CSS_STYLELINT_CONFIG_FILE	stylelint configuration file nameUse `LINTER_DEFAULT` to let the linter find it	`.stylelintrc.json`
CSS_STYLELINT_RULES_PATH	Path where to find linter configuration file	Workspace folder, then MegaLinter default rules
CSS_STYLELINT_DISABLE_ERRORS	Run linter but consider errors as warnings	`false`
CSS_STYLELINT_DISABLE_ERRORS_IF_LESS_THAN	Maximum number of errors allowed	`0`
CSS_STYLELINT_CLI_EXECUTABLE	Override CLI executable	`['stylelint']`

IDE Integration

Use stylelint in your favorite IDE to catch errors before MegaLinter !

IDE	Extension Name	Install
Atom	linter-stylelint	Visit Web Site
Emacs	flycheck	Visit Web Site
Sublime Text	SublimeLinter-stylelint	Visit Web Site
Sublime Text	SublimeLinter-contrib-stylelint_d	Visit Web Site
vim	ale	Visit Web Site
Visual Studio Code	vscode-stylelint

MegaLinter Flavors

This linter is available in the following flavors

Flavor	Description	Embedded linters
all	Default MegaLinter Flavor	124
c_cpp	Optimized for pure C/C++ projects	54
cupcake	MegaLinter for the most commonly used languages	84
documentation	MegaLinter for documentation projects	49
dotnet	Optimized for C, C++, C# or VB based projects	62
dotnetweb	Optimized for C, C++, C# or VB based projects with JS/TS	71
go	Optimized for GO based projects	51
java	Optimized for JAVA based projects	53
javascript	Optimized for JAVASCRIPT or TYPESCRIPT based projects	59
php	Optimized for PHP based projects	54
python	Optimized for PYTHON based projects	62
ruby	Optimized for RUBY based projects	50
rust	Optimized for RUST based projects	50
salesforce	Optimized for Salesforce based projects	54
swift	Optimized for SWIFT based projects	50
terraform	Optimized for TERRAFORM based projects	54

Behind the scenes

How are identified applicable files

File extensions: .css, .scss, .saas

How the linting is performed

stylelint is called once with the list of files as arguments (list_of_files CLI lint mode)

Example calls

stylelint myfile.css

stylelint --config .stylelintrc.json myfile.css myfile2.css myfile3.css

stylelint --fix --config .stylelintrc.json myfile.css myfile2.css myfile3.css

Help content


  A mighty CSS linter that helps you avoid errors and enforce conventions.

  Usage: stylelint [input] [options]

  Input: Files(s), glob(s), or nothing to use stdin.

    If an input argument is wrapped in quotation marks, it will be passed to
    globby for cross-platform glob support. "node_modules" are always ignored.
    You can also pass no input and use stdin, instead.

  Options:

    --config, -c <path_or_module>

      A path to a specific configuration file (JSON, YAML, CommonJS, or ES module),
      or a module name in "node_modules" that points to one. If no argument is
      provided, Stylelint will search for configuration files in the following
      places, in this order:

        - a "stylelint" property in "package.json"
        - a ".stylelintrc" file
        - a ".stylelintrc.{cjs,mjs,js,json,yaml,yml}" file
        - a "stylelint.config.{cjs,mjs,js}" file

      The search will begin in the working directory and move up the directory
      tree until a configuration file is found.

    --config-basedir <path>

      An absolute path to the directory that relative paths defining "extends",
      "plugins", and "customSyntax" are *relative to*. Only necessary if these
      values are relative paths.

    --print-config

      Print the configuration for the given input file path. Globs are unsupported.

    --ignore-path, -i <path>

      A path to a file containing patterns that describe files to ignore. The
      path can be absolute or relative to "process.cwd()". You can repeat the
      option to provide multiple paths. By default, Stylelint looks for
      ".stylelintignore" in "process.cwd()". Multiple can be set.

    --ignore-pattern, --ip <pattern>

      A pattern of files to ignore (in addition to those in ".stylelintignore").
      Multiple can be set.

    --fix

      Automatically fix problems of certain rules.

    --custom-syntax <name_or_path>

      A module name or path to a JS file exporting a PostCSS-compatible syntax.

    --stdin

      Accept stdin input even if it is empty.

    --stdin-filename <name>

      A filename to assign stdin input.

    --ignore-disables, --id

      Ignore "stylelint-disable" comments.

    --disable-default-ignores, --di

      Allow linting of "node_modules".

    --[no-]cache

      Store the info about processed files in order to only operate on the
      changed ones the next time you run Stylelint. By default, the cache is
      stored in "./.stylelintcache". To adjust this, use "--cache-location".
      Cache is disabled by default.

    --cache-location <path>

      A path to a file or directory to be used for the cache location. If a
      directory is specified, a cache file will be created inside the specified
      folder, with a name derived from a hash of the current working directory.

      If the directory for the cache does not exist, make sure you add a trailing "/"
      on *nix systems or "\" on Windows. Otherwise the path will be assumed to
      be a file.

    --cache-strategy <strategy>

      A strategy for the cache to use for detecting changed files. Either one of:

        metadata     by metadata of a file (default)
        content      by content of a file

      The "content" strategy can be useful in cases where the modification time
      of your files changes even if their contents have not. For example, this can
      happen during git operations like "git clone" because git does not track file
      modification time.

    --formatter, -f <formatter>

      An output formatter. The variants are as follows:

        string       human-readable strings (default)
        compact      similar to ESLint's compact formatter
        github       workflow commands for GitHub Actions (DEPRECATED)
        json         JSON format
        tap          TAP format
        unix         C compiler-like format
        verbose      extend "string" to include a file list and a tally

    --custom-formatter <path_or_module>

      A path to a JS file or module name exporting a custom formatting function.

    --quiet, -q

      Only register problems for rules with an "error"-level severity (ignore
      "warning"-level).

    --quiet-deprecation-warnings

      Ignore deprecations warnings.

    --[no-]color

      Force enabling/disabling of color.

    --[no-]validate

      Force enable/disable the validation of the rules' options.

    --report-needless-disables, --rd

      Also report errors for "stylelint-disable" comments that are not blocking
      a lint warning. The process will exit with code 2 if needless disables are found.

    --report-invalid-scope-disables, --risd

      Report "stylelint-disable" comments that used for rules that don't exist
      within the configuration object. The process will exit with code 2 if invalid
      scope disables are found.

    --report-descriptionless-disables, --rdd

      Report "stylelint-disable" comments without a description. The process will
      exit with code 2 if descriptionless disables are found.

    --max-warnings, --mw <number>

      The number of warnings above which the process will exit with code 2.
      Useful when setting "defaultSeverity" to "warning" and expecting the process
      to fail on warnings (e.g. CI build).

    --output-file, -o <path>

      A file path to write a report.

    --allow-empty-input, --aei

      When a glob pattern matches no files, the process will exit without throwing an error.

    --globby-options, --go <json>

      Options in JSON format passed to globby.

    --version, -v

      Show the version.

    --help, -h

      Show the help.

Installation on mega-linter Docker image

NPM packages (node.js):