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node_modules/stylelint/lib/utils/hasEmptyLine.mjs

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+const HAS_EMPTY_LINE = /\n[\r\t ]*\n/;
+
+/**
+ * Check if a string contains at least one empty line
+ *
+ * @param {string | undefined} string
+ * @returns {boolean}
+ */
+export default function hasEmptyLine(string) {
+	if (string === '' || string === undefined) return false;
+
+	return HAS_EMPTY_LINE.test(string);
+}