[css-nesting] Why does CSSStyleRule not inherit from CSSGroupingRule? · Issue #8940 · w3c/csswg-drafts (original) (raw)

https://drafts.csswg.org/css-nesting/#cssom-style has:

partial interface CSSStyleRule { [SameObject] readonly attribute CSSRuleList cssRules; unsigned long insertRule(CSSOMString rule, optional unsigned long index = 0); undefined deleteRule(unsigned long index); };

Why doing that rather than inheriting from CSSGroupingRule, which gives you that?

cc @tabatkins @sesse