npm install @csstools/postcss-scope-pseudo-class --save-dev

PostCSS Scope Pseudo Class lets you use the :scope Pseudo-class following the Selectors 4 specification.

:scope {
	color: green;
}
/* becomes */
:root {
	color: green;
}

Usage

Add PostCSS Scope Pseudo Class to your project:

npm install postcss @csstools/postcss-scope-pseudo-class --save-dev

Use it as a PostCSS plugin:

const postcss = require('postcss');
const postcssScopePseudoClass = require('@csstools/postcss-scope-pseudo-class');
postcss([
	postcssScopePseudoClass(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);

PostCSS Scope Pseudo Class runs in all Node environments, with special instructions for:

Node
PostCSS CLI
PostCSS Load Config
Webpack
Next.js
Gulp
Grunt

Options

preserve

The preserve option determines whether the original notation is preserved. By default, it is not preserved.

postcssScopePseudoClass({ preserve: true })

:scope {
	color: green;
}
/* becomes */
:root {
	color: green;
}
:scope {
	color: green;
}