noDuplicateFontNames

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Summary

Rule available since: v1.8.0
Diagnostic Category: lint/suspicious/noDuplicateFontNames
This rule is recommended, which means is enabled by default.
This rule doesn’t have a fix.
The default severity of this rule is error.
Sources:
- Same as stylelint/font-family-no-duplicate-names

How to configure

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{
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  "linter": {
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    "rules": {
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      "suspicious": {
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        "noDuplicateFontNames": "error"
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      }
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    }
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  }
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}

Description

Disallow duplicate names within font families.

This rule checks the font and font-family properties for duplicate font names.

This rule ignores var(—custom-property) variable syntaxes now.

Examples

Invalid

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a { font-family: "Lucida Grande", 'Arial', sans-serif, sans-serif; }

code-block.css:1:56 lint/suspicious/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate font names are redundant and unnecessary: sans-serif
  
  > 1 │ a { font-family: “Lucida Grande”, ‘Arial’, sans-serif, sans-serif; }
      │                                                        ^^^^^^^^^^
    2 │ 
  
  ℹ This is where the duplicate font name is found:
  
  > 1 │ a { font-family: “Lucida Grande”, ‘Arial’, sans-serif, sans-serif; }
      │                                            ^^^^^^^^^^
    2 │ 
  
  ℹ Remove duplicate font names within the property.

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a { font-family: 'Arial', "Lucida Grande", Arial, sans-serif; }

code-block.css:1:44 lint/suspicious/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate font names are redundant and unnecessary: Arial
  
  > 1 │ a { font-family: ‘Arial’, “Lucida Grande”, Arial, sans-serif; }
      │                                            ^^^^^
    2 │ 
  
  ℹ This is where the duplicate font name is found:
  
  > 1 │ a { font-family: ‘Arial’, “Lucida Grande”, Arial, sans-serif; }
      │                  ^^^^^^^
    2 │ 
  
  ℹ Remove duplicate font names within the property.

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a { FONT: italic 300 16px/30px Arial, " Arial", serif; }

code-block.css:1:39 lint/suspicious/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate font names are redundant and unnecessary: ” Arial”
  
  > 1 │ a { FONT: italic 300 16px/30px Arial, ” Arial”, serif; }
      │                                       ^^^^^^^^
    2 │ 
  
  ℹ This is where the duplicate font name is found:
  
  > 1 │ a { FONT: italic 300 16px/30px Arial, ” Arial”, serif; }
      │                                ^^^^^
    2 │ 
  
  ℹ Remove duplicate font names within the property.

Valid

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a { font-family: "Lucida Grande", "Arial", sans-serif; }
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b { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif; }
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c { font-family: SF Mono, Liberation Mono, sans-serif; }
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d { font: 1em SF Mono, Liberation Mono, sans-serif; }