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Specify a list of allowed properties.

a { display: block; }
/** ↑
* This property */

This rule ignores variables ($sass, @less, --custom-property).

The message secondary option can accept the arguments of this rule.


array|string|regex: ["array", "of", /properties/, "regex"]|"property"|"/regex/"|/regex/

If a string is surrounded with "/" (e.g. "/^background/"), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: /^background/ will match background, background-size, background-color, etc.


["display", "animation", "/^background/"]

The following patterns are considered problems:

a { color: pink; }
a {
animation: my-animation 2s;
color: pink;
a { borkgrund: orange; }

The following patterns are not considered problems:

a { display: block; }
a { -webkit-animation: my-animation 2s; }
a {
animation: my-animation 2s;
-webkit-animation: my-animation 2s;
display: block;
a { background: pink; }
a { background-color: pink; }