first commit

node_modules/stylelint/lib/utils/isKeyframeRule.mjs

@@ -0,0 +1,17 @@
+import { isAtRule } from './typeGuards.mjs';
+
+/**
+ * Check if a rule is a keyframe one
+ *
+ * @param {import('postcss').Rule} rule
+ * @returns {boolean}
+ */
+export default function isKeyframeRule(rule) {
+	const parent = rule.parent;
+
+	if (!parent) {
+		return false;
+	}
+
+	return isAtRule(parent) && parent.name.toLowerCase() === 'keyframes';
+}