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node_modules/stylelint/lib/utils/findAtRuleContext.mjs

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+import { isAtRule, isRule } from './typeGuards.mjs';
+
+/**
+ * Find the at-rule in which a rule is nested.
+ *
+ * Returns `null` if the rule is not nested within an at-rule.
+ *
+ * @param {import('postcss').Rule} rule
+ * @returns {null | import('postcss').AtRule}
+ */
+export default function findAtRuleContext(rule) {
+	const parent = rule.parent;
+
+	if (!parent) {
+		return null;
+	}
+
+	if (isAtRule(parent)) {
+		return parent;
+	}
+
+	if (isRule(parent)) {
+		return findAtRuleContext(parent);
+	}
+
+	return null;
+}