postcss-selector-not
Advanced tools
PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors
Package description
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.
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);
});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 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
npm install postcss-selector-not --save-dev
PostCSS Selector Not transforms :not() W3C CSS level 4 pseudo classes to :not() CSS level 3 selectors following the Selectors 4 Specification.
p:not(:first-child, .special) {
color: red;
}
/* becomes */
p:not(:first-child):not(.special) {
color: red;
}
[!CAUTION] Only lists of simple selectors (
:not(.a, .b)) will work as expected. Complex selectors (:not(.a > .b, .c ~ .d)) can not be downgraded.
Add PostCSS Selector Not to your project:
npm install postcss postcss-selector-not --save-dev
Use it as a PostCSS plugin:
const postcss = require('postcss');
const postcssSelectorNot = require('postcss-selector-not');
postcss([
postcssSelectorNot(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);
PostCSS Selector Not runs in all Node environments, with special instructions for:
FAQs
PostCSS plugin to transform :not() W3C CSS level 4 pseudo class to :not() CSS level 3 selectors
The npm package postcss-selector-not receives a total of 4,556,307 weekly downloads. As such, postcss-selector-not popularity was classified as popular.
We found that postcss-selector-not demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 5 open source maintainers collaborating on the project.
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