noUnknownProperty

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Summary

Rule available since: v1.8.0
Diagnostic Category: lint/correctness/noUnknownProperty
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/property-no-unknown

Description

Disallow unknown properties.

This rule considers properties defined in the CSS Specifications and browser specific properties to be known. https://github.com/known-css/known-css-properties#source

This rule ignores:

custom variables e.g. --custom-property
vendor-prefixed properties (e.g., -moz-align-self, -webkit-align-self)

Examples

Invalid

1
a {
2
  colr: blue;
3
}

code-block.css:2:3 lint/correctness/noUnknownProperty ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Unknown property is not allowed.
  
    1 │ a {
  > 2 │   colr: blue;
      │   ^^^^
    3 │ }
    4 │ 
  
  ℹ See CSS Specifications and browser specific properties for more details.
  
  ℹ To resolve this issue, replace the unknown property with a valid CSS property.

1
a {
2
  my-property: 1;
3
}

code-block.css:2:3 lint/correctness/noUnknownProperty ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Unknown property is not allowed.
  
    1 │ a {
  > 2 │   my-property: 1;
      │   ^^^^^^^^^^^
    3 │ }
    4 │ 
  
  ℹ See CSS Specifications and browser specific properties for more details.
  
  ℹ To resolve this issue, replace the unknown property with a valid CSS property.

Valid

1
a {
2
  color: green;
3
}

1
a {
2
  fill: black;
3
}

1
a {
2
  -moz-align-self: center;
3
}

How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "correctness": {
5
        "noUnknownProperty": "error"
6
      }
7
    }
8
  }
9
}