first commit

node_modules/stylelint/lib/utils/isKeyframeSelector.mjs

@@ -0,0 +1,29 @@
+import { keyframeSelectorKeywords, namedTimelineRangeKeywords } from '../reference/keywords.mjs';
+
+const HAS_TIMELINE_RANGE = new RegExp(
+	`^(?:${[...namedTimelineRangeKeywords.values()].join('|')})\\s+(?:\\d+|\\d*\\.\\d+)%$`,
+	'i',
+);
+
+/**
+ * Check whether a string is a keyframe selector.
+ *
+ * @param {string} selector
+ * @returns {boolean}
+ */
+export default function isKeyframeSelector(selector) {
+	if (keyframeSelectorKeywords.has(selector)) {
+		return true;
+	}
+
+	// Percentages
+	if (/^(?:\d+|\d*\.\d+)%$/.test(selector)) {
+		return true;
+	}
+
+	if (HAS_TIMELINE_RANGE.test(selector)) {
+		return true;
+	}
+
+	return false;
+}