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diff --git a/node_modules/date-fns/esm/lastDayOfDecade/index.js b/node_modules/date-fns/esm/lastDayOfDecade/index.js
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+++ b/node_modules/date-fns/esm/lastDayOfDecade/index.js
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+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name lastDayOfDecade
+ * @category Decade Helpers
+ * @summary Return the last day of a decade for the given date.
+ *
+ * @description
+ * Return the last day of a decade for the given date.
+ *
+ * @param {Date|Number} date - the original date
+ * @returns {Date} the last day of a decade
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // The last day of a decade for 21 December 2012 21:12:00:
+ * const result = lastDayOfDecade(new Date(2012, 11, 21, 21, 12, 00))
+ * //=> Wed Dec 31 2019 00:00:00
+ */
+export default function lastDayOfDecade(dirtyDate) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate);
+  var year = date.getFullYear();
+  var decade = 9 + Math.floor(year / 10) * 10;
+  date.setFullYear(decade + 1, 0, 0);
+  date.setHours(0, 0, 0, 0);
+  return date;
+}
+\ No newline at end of file