In the evolving world of front-end development, adhering to best practices in styling is paramount. This is where stylelint-config-css-modules comes into play. It directly caters to CSS modules by providing a shareable configuration for stylelint, ensuring that your CSS syntax aligns with the expectations of modules. This guide will walk you through the installation, usage, and some practical examples of this powerful tool.

What is stylelint-config-css-modules?

stylelint-config-css-modules is a configuration setup that adjusts stylelint rules to recognize CSS modules’ specific syntax. This allows developers to easily override pre-defined rules, such as those in stylelint-config-standard, thus maintaining consistent coding standards.

Installation

Getting started with stylelint-config-css-modules is straightforward. You need to run one of the following commands in your project directory:

• npm install stylelint-config-css-modules --save-dev
• pnpm install stylelint-config-css-modules --save-dev
• yarn add stylelint-config-css-modules --dev

If you do not use SCSS and wish to exclude it from your node_modules, execute the following command:

• npm install stylelint-config-css-modules --save-dev --no-optional
• pnpm install stylelint-config-css-modules --save-dev --no-optional
• yarn add stylelint-config-css-modules --dev --ignore-optional

Usage

Integrating stylelint-config-css-modules into your project is a breeze. You just need to extend it in your stylelint configuration. In your JSON file, simply add the following lines:

{
    "extends": [
        "stylelint-config-standard",
        "stylelint-config-css-modules"
    ]
}

Examples of CSS Usage

To give you a better understanding, here are some practical examples demonstrating how to use CSS modules with stylelint:

@value colors: .colors.css;
@value primary, secondary from colors;

.base {
    content: base;
    color: primary;
}

.composed {
    composes: base;
}

.composedWith {
    compose-with: base;
}

.flexible {
    composes: flex from .utils.css;
    flex-direction: column;
}

:global(.js) .progressive {
    display: block;
}

:export {
    black: #000;
    white: #111;
}

SCSS Integration

If you are using SCSS alongside stylelint-config-css-modules, it is essential to have stylelint-scss installed. Your configuration should look like this:

{
    "extends": [
        "stylelint-config-standard-scss",
        "stylelint-config-css-modules"
    ]
}

Troubleshooting

If you encounter issues while using stylelint-config-css-modules, here are a few troubleshooting tips:

• Ensure that you have the correct dependencies installed, including stylelint and any related configurations.
• Check your stylelint configuration file for any syntax errors.
• Verify that you’re using the appropriate version of stylelint-config-css-modules that matches your project setup.
• If you’re not using SCSS, ensure that SCSS dependent packages are successfully removed if that was your intent.

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Conclusion

stylelint-config-css-modules makes styling your components easier and ensures that your codebase remains clean and understandable. With its easy integration, you can maintain a high standard for your CSS code across projects.

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