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noDuplicateFontNames (since v1.8.0)

Diagnostic Category: lint/nursery/noDuplicateFontNames

Sources:

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

Section titled Examples

Invalid

Section titled Invalid
a { font-family: "Lucida Grande", 'Arial', sans-serif, sans-serif; }
code-block.css:1:56 lint/nursery/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate font names are redundant and unnecessary: sans-serif
  
  > 1 │ a { font-family: "Lucida Grande", 'Arial', sans-serif, sans-serif; }
      │                                                        ^^^^^^^^^^
    2 │ 
  
  ℹ Remove duplicate font names within the property
  

a { font-family: 'Arial', "Lucida Grande", Arial, sans-serif; }
code-block.css:1:44 lint/nursery/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Duplicate font names are redundant and unnecessary: Arial
  
  > 1 │ a { font-family: 'Arial', "Lucida Grande", Arial, sans-serif; }
      │                                            ^^^^^
    2 │ 
  
  ℹ Remove duplicate font names within the property
  

a { FONT: italic 300 16px/30px Arial, " Arial", serif; }
code-block.css:1:39 lint/nursery/noDuplicateFontNames ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

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

Valid

Section titled Valid
a { font-family: "Lucida Grande", "Arial", sans-serif; }
b { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif; }
Section titled Related links