README.md

selector-type-no-unknown

Disallow unknown type selectors.

    unknown {}
/** ↑
 * This type selector */

This rule considers tags defined in the HTML, SVG, and MathML specifications to be known.

Options

true

{
  "selector-type-no-unknown": true
}

The following patterns are considered problems:

unknown {}

tag {}

The following patterns are not considered problems:

input {}

ul li {}

li > a {}

Optional secondary options

ignore

{ "ignore": ["array", "of", "options"] }

"custom-elements"

Allow custom elements.

{
  "selector-type-no-unknown": [true, { "ignore": ["custom-elements"] }]
}

The following patterns are considered problems:

unknown {}

x-Foo {}

The following patterns are not considered problems:

x-foo {}

"default-namespace"

Allow unknown type selectors if they belong to the default namespace.

{
  "selector-type-no-unknown": [true, { "ignore": ["default-namespace"] }]
}

The following patterns are considered problems:

namespace|unknown {}

The following patterns are not considered problems:

unknown {}

ignoreNamespaces

{ "ignoreNamespaces": ["array", "of", "namespaces", "/regex/"] }

Given:

{
  "selector-type-no-unknown": [
    true,
    { "ignoreNamespaces": ["/^my-/", "custom-namespace"] }
  ]
}

The following patterns are not considered problems:

custom-namespace|unknown {}

my-namespace|unknown {}

my-other-namespace|unknown {}

ignoreTypes

{ "ignoreTypes": ["array", "of", "types", "/regex/"] }

Given:

{
  "selector-type-no-unknown": [
    true,
    { "ignoreTypes": ["/^my-/", "custom-type"] }
  ]
}

The following patterns are not considered problems:

custom-type {}

my-type {}

my-other-type {}