postcss-attribute-case-insensitive

What is postcss-attribute-case-insensitive?

The postcss-attribute-case-insensitive npm package is a plugin for PostCSS, a tool for transforming CSS with JavaScript. This plugin allows you to write attribute selectors in CSS that are case-insensitive, making your CSS more flexible and easier to maintain. It follows the W3C specification for case-insensitive attribute selectors, enabling developers to target attributes without worrying about the case sensitivity of their values.

What are postcss-attribute-case-insensitive's main functionalities?

Case-insensitive attribute selectors

This feature allows you to select elements based on their attributes in a case-insensitive manner. For example, it enables `[href='example.com' i]` to match both `href='example.com'` and `href='Example.com'`. This is particularly useful when dealing with user-generated content or integrating with systems that are not case-sensitive.

[attr=value i] { /* styles */ }

Other packages similar to postcss-attribute-case-insensitive

postcss-selector-not

Similar to postcss-attribute-case-insensitive, postcss-selector-not is a PostCSS plugin that polyfills the :not() CSS pseudo-class. While it focuses on negating selectors rather than case-insensitive attribute selection, it similarly enhances CSS by providing more flexible selector options.

postcss-pseudo-class-any-link

This package provides a PostCSS plugin to polyfill the :any-link pseudo-class, which is a convenience for selecting links regardless of their visited state. Like postcss-attribute-case-insensitive, it aims to extend CSS capabilities, though it focuses on link selection rather than attribute case insensitivity.

README

PostCSS Attribute Case Insensitive

npm install postcss-attribute-case-insensitive --save-dev

PostCSS Attribute Case Insensitive enables support for Case Insensitive Attribute matching in selectors.

[frame=hsides i] {
	border-style: solid none;
}

/* becomes */

[frame=hsides],[frame=Hsides],[frame=hSides],[frame=HSides],[frame=hsIdes],[frame=HsIdes],[frame=hSIdes],[frame=HSIdes],[frame=hsiDes],[frame=HsiDes],[frame=hSiDes],[frame=HSiDes],[frame=hsIDes],[frame=HsIDes],[frame=hSIDes],[frame=HSIDes],[frame=hsidEs],[frame=HsidEs],[frame=hSidEs],[frame=HSidEs],[frame=hsIdEs],[frame=HsIdEs],[frame=hSIdEs],[frame=HSIdEs],[frame=hsiDEs],[frame=HsiDEs],[frame=hSiDEs],[frame=HSiDEs],[frame=hsIDEs],[frame=HsIDEs],[frame=hSIDEs],[frame=HSIDEs],[frame=hsideS],[frame=HsideS],[frame=hSideS],[frame=HSideS],[frame=hsIdeS],[frame=HsIdeS],[frame=hSIdeS],[frame=HSIdeS],[frame=hsiDeS],[frame=HsiDeS],[frame=hSiDeS],[frame=HSiDeS],[frame=hsIDeS],[frame=HsIDeS],[frame=hSIDeS],[frame=HSIDeS],[frame=hsidES],[frame=HsidES],[frame=hSidES],[frame=HSidES],[frame=hsIdES],[frame=HsIdES],[frame=hSIdES],[frame=HSIdES],[frame=hsiDES],[frame=HsiDES],[frame=hSiDES],[frame=HSiDES],[frame=hsIDES],[frame=HsIDES],[frame=hSIDES],[frame=HSIDES] {
	border-style: solid none;
}

Usage

Add PostCSS Attribute Case Insensitive to your project:

npm install postcss postcss-attribute-case-insensitive --save-dev

Use it as a PostCSS plugin:

const postcss = require('postcss');
const postcssAttributeCaseInsensitive = require('postcss-attribute-case-insensitive');

postcss([
	postcssAttributeCaseInsensitive(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);

Options

preserve

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

postcssAttributeCaseInsensitive({ preserve: true })

[frame=hsides i] {
	border-style: solid none;
}

/* becomes */

[frame=hsides],[frame=Hsides],[frame=hSides],[frame=HSides],[frame=hsIdes],[frame=HsIdes],[frame=hSIdes],[frame=HSIdes],[frame=hsiDes],[frame=HsiDes],[frame=hSiDes],[frame=HSiDes],[frame=hsIDes],[frame=HsIDes],[frame=hSIDes],[frame=HSIDes],[frame=hsidEs],[frame=HsidEs],[frame=hSidEs],[frame=HSidEs],[frame=hsIdEs],[frame=HsIdEs],[frame=hSIdEs],[frame=HSIdEs],[frame=hsiDEs],[frame=HsiDEs],[frame=hSiDEs],[frame=HSiDEs],[frame=hsIDEs],[frame=HsIDEs],[frame=hSIDEs],[frame=HSIDEs],[frame=hsideS],[frame=HsideS],[frame=hSideS],[frame=HSideS],[frame=hsIdeS],[frame=HsIdeS],[frame=hSIdeS],[frame=HSIdeS],[frame=hsiDeS],[frame=HsiDeS],[frame=hSiDeS],[frame=HSiDeS],[frame=hsIDeS],[frame=HsIDeS],[frame=hSIDeS],[frame=HSIDeS],[frame=hsidES],[frame=HsidES],[frame=hSidES],[frame=HSidES],[frame=hsIdES],[frame=HsIdES],[frame=hSIdES],[frame=HSIdES],[frame=hsiDES],[frame=HsiDES],[frame=hSiDES],[frame=HSiDES],[frame=hsIDES],[frame=HsIDES],[frame=hSIDES],[frame=HSIDES] {
	border-style: solid none;
}
[frame=hsides i] {
	border-style: solid none;
}