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conformance · v134

v134 · expose-cssfontfeaturesvaluerule — conformance probe

5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://drafts.csswg.org/css-fonts/#cssfontfeaturevaluesrule chromestatus: #6275972238934016 generated 2026-06-01T08:30:00Z by conformance-author-v1-subagent
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id contract kind verdict detail
cssfontfeaturevaluesrule-defined CSSFontFeatureValuesRule is exposed on the global object. exists
cssfontfeaturevaluesrule-prototype CSSFontFeatureValuesRule.prototype exposes a fontFamily property as described by the IDL. exists
cssrule-parses-as-instance An @font-feature-values block parses as a CSSFontFeatureValuesRule. script
font-feature-values-fontfamily-reflect The fontFamily getter returns the family name parsed from @font-feature-values. script
cssrule-instanceof-base CSSFontFeatureValuesRule extends CSSRule. script