Selector parser with built in methods for working with selector strings.

Determine selector specificity with postcss-selector-parser

Resolve nested CSS selectors

npm query parser and tools

Search CSS(-like) strings

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

Fault-tolerant CSS parser for PostCSS

Resolve a nested selector in a PostCSS AST

Algorithms to help you parse CSS from an array of tokens.

PostCSS plugin to unwrap nested rules like how Sass does it

A CSS property value parser for use with PostCSS

Use cascade layers in CSS

Use the :focus-within pseudo-selector in CSS

Autoload Config for PostCSS

Transforms css values and at-rule params into the tree

Prefix all CSS rules with a selector

Parse CSS color values

Use the :focus-visible pseudo-selector in CSS

Powerful and compliant CSS selector parser.

Use Custom Selectors in CSS