JSPM

Detect whether a terminal supports color

Detect whether the terminal supports Unicode

Fela plugin to replace named keys

CSS.supports() shim

Fela plugin to resolve responsive array values

Detect whether a terminal or browser supports ansi colors.

A tiny color library

Detect whether $PAGER supports color

A list of tests to determine whether a CSS @supports rule is considered a browser hack

Merge duplicate CSS media query and other at-rule rules together.

PostCSS plugin adding "@supports not" support for IE 11

check if unicode is supported

Checks if a certain css feature is supported by the running browser.

A complex string based CSS managment library

Execute the command only if you are running on a supported version of Node and platform

A JavaScript polyfill for CSS if() functionality with style(), media(), and supports() functions

PostCSS plugin for transforming CSS if() functions to native CSS

PostCSS plugin adding support for the `:ie11` pseudo-class targetting IE 11 only

Lightning CSS plugin for transforming CSS if() functions to native CSS

JavaScript module to check if the device is retina or not.

Refactored supports-color code to support both CommonJS (CJS) and ES Modules (ESM) with mixed exports.

Detect whether a terminal supports color

Check if your browser has support for date inputs.

A JavaScript polyfill for CSS Custom Function functionality with style(), media(), and supports() functions

Check if a browser supports local storage.

List of platforms supported by Node.js

A simple, light, modern, universal JavaScript router

Detect whether a terminal supports color

Helper mixins for using Modernizr.js test classes in Stylus

support checks for the browser and node.js

> Let you know whether the terminal supports Unicode or not

Detect whether the terminal supports unicode

'A Postcss plugin that fallbacks your CSS variables with native support'

Detect whether a terminal supports color

CSS postprocessing: group supports

detect javascript environment features

CSS postprocessing: group supports

A specialized parser for CSS @supports conditions, designed to enhance stylelint plugins by intelligently evaluating feature-detected code blocks

PostCSS plugin for transforming CSS Custom Function functions to native CSS