declaration-property-unit-allowed-list

Specify a list of allowed property and unit pairs within declarations.

a { width: 100px; }/** ↑         ↑ * These properties and these units */

Options

object: { "unprefixed-property-name": ["array", "of", "units"] }

If a property name is surrounded with "/" (e.g. "/^animation/"), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: /^animation/ will match animation, animation-duration, animation-timing-function, etc.

Given:

{  "font-size": ["em", "px"],  "/^animation/": ["s"],  "line-height": []}

The following patterns are considered problems:

a { font-size: 1.2rem; }

a { animation: animation-name 500ms ease; }

a { -webkit-animation: animation-name 500ms ease; }

a { animation-duration: 500ms; }

a { line-height: 13px; }

The following patterns are not considered problems:

a { font-size: 1em; }

a { height: 100px; }

a { animation: animation-name 5s ease; }

a { -webkit-animation: animation-name 5s ease; }

a { animation-duration: 5s; }

a { line-height: 1; }

Optional secondary options

ignore: ["inside-function"]

Ignore units that are inside a function.

For example, given:

[  {    "/^border/": ["px"],    "/^background/": ["%"]  },  {    "ignore": ["inside-function"]  }]

The following patterns are not considered problems:

a {  border: 1px solid hsla(162deg, 51%, 35%, 0.8);}

a {  background-image: linear-gradient(hsla(162deg, 51%, 35%, 0.8), hsla(62deg, 51%, 35%, 0.8));}