notes/node_modules/stylelint/lib/rules/selector-pseudo-class-no-unknown/README.md

selector-pseudo-class-no-unknown

Disallow unknown pseudo-class selectors.

    a:hover {}
/**    ↑
 * This pseudo-class selector */

This rule considers pseudo-class selectors defined in the CSS Specifications, up to and including Editor's Drafts, to be known.

All vendor-prefixed pseudo-class selectors are ignored.

Options

true

The following patterns are considered warnings:

a:unknown {}

a:UNKNOWN {}

a:hoverr {}

The following patterns are not considered warnings:

a:hover {}

a:focus {}

:not(p) {}

input:-moz-placeholder {}

Optional secondary options

ignorePseudoClasses: ["/regex/", "string"]

Given:

["/^my-/", "pseudo-class"]

The following patterns are not considered warnings:

a:pseudo-class {}

a:my-pseudo {}

a:my-other-pseudo {}