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+import toDate from '../toDate/index'
+import requiredArgs from '../_lib/requiredArgs/index'
+
+/**
+ * @name isEqual
+ * @category Common Helpers
+ * @summary Are the given dates equal?
+ *
+ * @description
+ * Are the given dates equal?
+ *
+ * ### v2.0.0 breaking changes:
+ *
+ * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
+ *
+ * @param {Date|Number} dateLeft - the first date to compare
+ * @param {Date|Number} dateRight - the second date to compare
+ * @returns {Boolean} the dates are equal
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // Are 2 July 2014 06:30:45.000 and 2 July 2014 06:30:45.500 equal?
+ * var result = isEqual(
+ *   new Date(2014, 6, 2, 6, 30, 45, 0),
+ *   new Date(2014, 6, 2, 6, 30, 45, 500)
+ * )
+ * //=> false
+ */
+export default function isEqual(dirtyLeftDate: Date | number, dirtyRightDate: Date | number): boolean {
+  requiredArgs(2, arguments)
+
+  const dateLeft = toDate(dirtyLeftDate)
+  const dateRight = toDate(dirtyRightDate)
+  return dateLeft.getTime() === dateRight.getTime()
+}