postcss-selector-not

What is postcss-selector-not?

The postcss-selector-not package is a PostCSS plugin that transforms :not() pseudo-class selectors to work with older browsers that do not support them. It helps in writing more maintainable and readable CSS by allowing the use of the :not() pseudo-class in a way that is compatible with a wider range of browsers.

What are postcss-selector-not's main functionalities?

Transform :not() pseudo-class

This feature transforms the :not() pseudo-class to a format that is compatible with older browsers. In this example, the CSS rule 'a:not(.foo) { color: red; }' is processed to ensure compatibility.

const postcss = require('postcss');
const selectorNot = require('postcss-selector-not');

const css = 'a:not(.foo) { color: red; }';

postcss([selectorNot]).process(css).then(result => {
  console.log(result.css);
});

Other packages similar to postcss-selector-not

postcss-preset-env

postcss-preset-env allows you to use future CSS features today by converting modern CSS into something most browsers can understand. It includes a variety of plugins, including one that handles :not() pseudo-classes, making it a more comprehensive solution compared to postcss-selector-not.

postcss-nesting

postcss-nesting enables nesting of CSS rules, which can sometimes overlap with the use of :not() pseudo-classes for scoping styles. While it doesn't directly transform :not() selectors, it provides a different approach to writing maintainable CSS.

README

postcss-selector-not

PostCSS plugin to transform :not() W3C CSS leve 4 pseudo class to :not() CSS level 3 selectors

http://dev.w3.org/csswg/selectors-4/#negation

Installation

$ npm install postcss-selector-not

Usage

var postcss = require("postcss")

var output = postcss()
  .use(require("postcss-selector-not"))
  .process(require("fs").readFileSync("input.css", "utf8"))
  .css

Using this input.css:

p:not(:first-child, .special) {
  color: red;
}

you will get:

p:not(:first-child), p:not(.special) {
  color: red;
}

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Changelog

License