noUnmatchableAnbSelector

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Diagnostic Category: lint/correctness/noUnmatchableAnbSelector

Since: v1.8.0

Sources:

Same as: stylelint/selector-anb-no-unmatchable

Description

Disallow unmatchable An+B selectors.

Selectors that always evaluate to 0 will not match any elements. For more details about the An+B syntax, see: https://www.w3.org/TR/css-syntax-3/#anb-microsyntax

Examples

Invalid

a:nth-child(0) {}

code-block.css:1:13 lint/correctness/noUnmatchableAnbSelector ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This selector will never match any elements.
  
  > 1 │ a:nth-child(0) {}
      │             ^
    2 │ 
  
  ℹ Avoid using An+B selectors that always evaluate to 0.
  
  ℹ For more details, see the official spec for An+B selectors.

a:nth-last-child(0n) {}

code-block.css:1:18 lint/correctness/noUnmatchableAnbSelector ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This selector will never match any elements.
  
  > 1 │ a:nth-last-child(0n) {}
      │                  ^^
    2 │ 
  
  ℹ Avoid using An+B selectors that always evaluate to 0.
  
  ℹ For more details, see the official spec for An+B selectors.

a:nth-of-type(0n+0) {}

code-block.css:1:15 lint/correctness/noUnmatchableAnbSelector ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This selector will never match any elements.
  
  > 1 │ a:nth-of-type(0n+0) {}
      │               ^^^^
    2 │ 
  
  ℹ Avoid using An+B selectors that always evaluate to 0.
  
  ℹ For more details, see the official spec for An+B selectors.

a:nth-last-of-type(0 of a) {}

code-block.css:1:20 lint/correctness/noUnmatchableAnbSelector ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This selector will never match any elements.
  
  > 1 │ a:nth-last-of-type(0 of a) {}
      │                    ^^^^^^
    2 │ 
  
  ℹ Avoid using An+B selectors that always evaluate to 0.
  
  ℹ For more details, see the official spec for An+B selectors.

Valid

a:nth-child(1) {}

a:nth-last-child(1n) {}

a:nth-of-type(1n+0) {}

a:nth-last-of-type(1 of a) {}

How to configure

{
  "linter": {
    "rules": {
      "correctness": {
        "noUnmatchableAnbSelector": "error"
      }
    }
  }
}