CSS.RuleMatch

{
  "id": "RuleMatch",
  "type": "object",
  "properties": [
    {
      "name": "rule",
      "$ref": "CSSRule",
      "description": "CSS rule in the match."
    },
    {
      "name": "matchingSelectors",
      "type": "array",
      "items": {
        "type": "integer"
      },
      "description": "Matching selector indices in the rule's selectorList selectors (0-based)."
    }
  ],
  "description": "Match data for a CSS rule."
}