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diff --git a/node_modules/date-fns/esm/isLeapYear/index.js b/node_modules/date-fns/esm/isLeapYear/index.js
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+++ b/node_modules/date-fns/esm/isLeapYear/index.js
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+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name isLeapYear
+ * @category Year Helpers
+ * @summary Is the given date in the leap year?
+ *
+ * @description
+ * Is the given date in the leap year?
+ *
+ * @param {Date|Number} date - the date to check
+ * @returns {Boolean} the date is in the leap year
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // Is 1 September 2012 in the leap year?
+ * const result = isLeapYear(new Date(2012, 8, 1))
+ * //=> true
+ */
+export default function isLeapYear(dirtyDate) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate);
+  var year = date.getFullYear();
+  return year % 400 === 0 || year % 4 === 0 && year % 100 !== 0;
+}
+\ No newline at end of file