Function isImportRule

src/inject/dynamic-theme/css-rules.ts:199–214

(rule: CSSRule | null)

}

export function isImportRule(rule: CSSRule | null): rule is CSSImportRule {
    if (!rule) {
        return false;
    }
    if (styleRules.has(rule)) {
        return false;
    }
    if (importRules.has(rule)) {
        return true;
    }
    if ((rule as CSSImportRule).href) {
        importRules.add(rule);
        return true;
    }
    return false;
}

export function isMediaRule(rule: CSSRule | null): rule is CSSMediaRule {
    if (!rule) {