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declaration-property-value-keyword-no-deprecated

Disallow deprecated keywords for properties within declarations.

  a { color: ThreeDDarkShadow; }
/**     ↑         ↑
 * property and value pairs like these */

This rule flags keywords that were removed or deprecated after being in the CSS specifications, including editor drafts, and were subsequently either:

  • shipped in a stable version of a browser
  • shipped by a developer channel/edition browser
  • shipped but behind experimental flags
  • polyfilled with some adoption before any browser actually shipped
  • had an MDN page at one point in time

The fix option can automatically fix some of the problems reported by this rule.

Prior art:

Options​

true​

{
  "declaration-property-value-keyword-no-deprecated": true
}

The following patterns are considered problems:

a { overflow: overlay; }
a { text-justify: distribute; }

The following patterns are not considered problems:

a { overflow: auto; }
a { text-justify: inter-character; }

Optional secondary options​

ignoreKeywords​

{ "ignoreKeywords": ["array", "of", "keywords", "/regex/"] }

Given:

{
  "declaration-property-value-keyword-no-deprecated": [
    true,
    { "ignoreKeywords": ["ActiveBorder", "/caption/i"] }
  ]
}

The following patterns are not considered problems:

a {
  color: ActiveBorder;
}
a {
  color: InactiveCaptionText;
}