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diff --git a/node_modules/date-fns/esm/startOfQuarter/index.js b/node_modules/date-fns/esm/startOfQuarter/index.js
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+++ b/node_modules/date-fns/esm/startOfQuarter/index.js
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+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name startOfQuarter
+ * @category Quarter Helpers
+ * @summary Return the start of a year quarter for the given date.
+ *
+ * @description
+ * Return the start of a year quarter for the given date.
+ * The result will be in the local timezone.
+ *
+ * @param {Date|Number} date - the original date
+ * @returns {Date} the start of a quarter
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // The start of a quarter for 2 September 2014 11:55:00:
+ * const result = startOfQuarter(new Date(2014, 8, 2, 11, 55, 0))
+ * //=> Tue Jul 01 2014 00:00:00
+ */
+export default function startOfQuarter(dirtyDate) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate);
+  var currentMonth = date.getMonth();
+  var month = currentMonth - currentMonth % 3;
+  date.setMonth(month, 1);
+  date.setHours(0, 0, 0, 0);
+  return date;
+}
+\ No newline at end of file