PostCSS Cleaner

PostCSS plugin to clean unused CSS.

---

Description

This plugin search for selector presence in your source files, regardless of sources files extension. If it can find a selector, it removes it.

It doesn't create any virtual DOM. Instead, it just read your source files code to check the presence of each selector in each rule.

Usage

let postcss_cleaner = require('postccs-cleaner');

let options = {
    sources: ['array', 'of', 'source', 'files'], // Required, files to compare CSS against
    raw: 'h1.classname test', // Optionnal ,if 'sources' is already included, it will be overwrite
    ignore: ['.ignored-class', /or-ignored-regex/],
    log: {
        sourcesList: false,
        removedRules: false,
        ignoredRules: false
    }
};

postcss([postcss_cleaner(options)]).process(css); // `css` is your stylesheet

Alternatively, you can ignore portions of your CSS using comments.

.foo{ }

/* postcss-cleaner: ignore on*/
.bar{ }
/* postcss-cleaner: ignore off*/

.baz{ }

See PostCSS docs for examples for your environment.

Example

CSS Input

/* Css Input */
.foo {
}

.bar {
}

th td,
tr td {
}

.baz {
}

.js-action {
}

Source files

<!-- HTML Input -->
<div class="foo">
    Lorem ipsum dolor sit amet.
</div>

# Slim Input
table
    tr
        td
            | Lorem ipsum dolor sit amet.

// JS Input
document.querySelector('.js-action').addEventListener('click', e => {
    /* [...] */
});

CSS Output

.foo {
}

tr td {
}

.js-action {
}

To do

• Improve test suite
• Improve doc
• Clean plugin's code