/postcss-nested

PostCSS plugin to unwrap nested rules like how Sass does it.

Primary LanguageJavaScriptMIT LicenseMIT

PostCSS Nested Build Status

PostCSS plugin to unwrap nested rules like how Sass does it.

.phone {
    &_title {
        width: 500px;
        @media (max-width: 500px) {
            width: auto;
        }
        body.is_dark & {
            color: white;
        }
    }
    img {
        display: block;
    }
}

will be processed to:

.phone_title {
    width: 500px;
}
@media (max-width: 500px) {
    .phone_title {
        width: auto;
    }
}
body.is_dark .phone_title {
    color: white;
}
.phone img {
    display: block;
}

Use postcss-current-selector after this plugin if you want to use current selector in properties or variables values.

Use postcss-nested-ancestors before this plugin if you want to reference any ancestor element directly in your selectors with ^&.

See also postcss-nesting, which implements Tab Atkin's proposed syntax (requires the & and introduces @nest).

There is also postcss-nested-props for nested properties like font-size.

Sponsored by Evil Martians

Usage

postcss([ require('postcss-nested') ])

See PostCSS docs for examples for your environment.

Options

bubble

By default, plugin will unwrap only @media, @supports, @font-face and @document at-rules. You can add your custom at-rules to this list by bubble` option:

postcss([ require('postcss-nested')({ bubble: ['phone'] }) ])

preserveEmpty

By default, plugin will strip out any empty selector generated by intermediate nesting levels. You can set preserveEmpty to true to preserve them.

.a {
    .b {
        color: black;
    }
}

Will be compiled to:

.a { }
.a .b {
    color: black;
}

This is especially useful if you want to export the empty classes with postcss-modules.