Function getGroup

src/inject/dynamic-theme/stylesheet-modifier.ts:208–224

(rule: CSSRule)

        const groupRefs = new WeakMap<CSSRule, ReadyGroup>();

        function getGroup(rule: CSSRule): ReadyGroup {
            if (rule == null) {
                return rootReadyGroup;
            }

            if (groupRefs.has(rule)) {
                return groupRefs.get(rule)!;
            }

            const group: ReadyGroup = {rule, rules: [], isGroup: true};
            groupRefs.set(rule, group);

            const parentGroup = getGroup(rule.parentRule!);
            parentGroup.rules.push(group);

            return group;
        }

        varTypeChangeCleaners.forEach((clear) => clear());
        varTypeChangeCleaners.clear();