initial commit: scaffolding

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diff --git a/node_modules/date-fns/esm/eachWeekendOfInterval/index.js b/node_modules/date-fns/esm/eachWeekendOfInterval/index.js
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+import eachDayOfInterval from "../eachDayOfInterval/index.js";
+import isSunday from "../isSunday/index.js";
+import isWeekend from "../isWeekend/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name eachWeekendOfInterval
+ * @category Interval Helpers
+ * @summary List all the Saturdays and Sundays in the given date interval.
+ *
+ * @description
+ * Get all the Saturdays and Sundays in the given date interval.
+ *
+ * @param {Interval} interval - the given interval. See [Interval]{@link https://date-fns.org/docs/Interval}
+ * @returns {Date[]} an array containing all the Saturdays and Sundays
+ * @throws {TypeError} 1 argument required
+ * @throws {RangeError} The start of an interval cannot be after its end
+ * @throws {RangeError} Date in interval cannot be `Invalid Date`
+ *
+ * @example
+ * // Lists all Saturdays and Sundays in the given date interval
+ * const result = eachWeekendOfInterval({
+ *   start: new Date(2018, 8, 17),
+ *   end: new Date(2018, 8, 30)
+ * })
+ * //=> [
+ * //   Sat Sep 22 2018 00:00:00,
+ * //   Sun Sep 23 2018 00:00:00,
+ * //   Sat Sep 29 2018 00:00:00,
+ * //   Sun Sep 30 2018 00:00:00
+ * // ]
+ */
+export default function eachWeekendOfInterval(interval) {
+  requiredArgs(1, arguments);
+  var dateInterval = eachDayOfInterval(interval);
+  var weekends = [];
+  var index = 0;
+  while (index < dateInterval.length) {
+    var date = dateInterval[index++];
+    if (isWeekend(date)) {
+      weekends.push(date);
+      if (isSunday(date)) index = index + 5;
+    }
+  }
+  return weekends;
+}
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