function-allowed-list

Specify a list of allowed functions.

a { transform: scale(1); }
/**            ↑
 * This function */

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

Options

["array", "of", "unprefixed", "functions", "/regex/"]

Given:

{
  "function-allowed-list": ["scale", "rgba", "/linear-gradient/"]
}

The following patterns are considered problems:

a { transform: rotate(1); }

a {
  color: hsla(170, 50%, 45%, 1)
}

a {
  background:
    red,
    -webkit-radial-gradient(red, green, blue);
}

The following patterns are not considered problems:

a { background: red; }

a { transform: scale(1); }

a {
  color: rgba(0, 0, 0, 0.5);
}

a {
  background:
    red,
    -moz-linear-gradient(45deg, blue, red);
}

{
  "exceptWithoutPropertyFallback": [
    "array",
    "of",
    "unprefixed",
    "functions",
    "/regex/"
  ]
}

Disallow the matching functions when they are without a property fallback in the same declaration block.

Given:

{
  "function-allowed-list": [
    ["scale", "min", "/max/"],
    { "exceptWithoutPropertyFallback": ["min", "/max/"] }
  ]
}

The following patterns are considered problems:

a { width: min(50%, 100px); }

a { height: max(50%, 100px); }

a {
  width: max(50%, 100px);
  width: 100px;
}

The following patterns are not considered problems:

a { transform: scale(1); }

a {
  width: 100px;
  width: min(50%, 100px);
}