initial commit: scaffolding

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diff --git a/node_modules/date-fns/esm/isWithinInterval/index.js b/node_modules/date-fns/esm/isWithinInterval/index.js
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+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name isWithinInterval
+ * @category Interval Helpers
+ * @summary Is the given date within the interval?
+ *
+ * @description
+ * Is the given date within the interval? (Including start and end.)
+ *
+ * @param {Date|Number} date - the date to check
+ * @param {Interval} interval - the interval to check
+ * @returns {Boolean} the date is within the interval
+ * @throws {TypeError} 2 arguments required
+ * @throws {RangeError} The start of an interval cannot be after its end
+ * @throws {RangeError} Date in interval cannot be `Invalid Date`
+ *
+ * @example
+ * // For the date within the interval:
+ * isWithinInterval(new Date(2014, 0, 3), {
+ *   start: new Date(2014, 0, 1),
+ *   end: new Date(2014, 0, 7)
+ * })
+ * //=> true
+ *
+ * @example
+ * // For the date outside of the interval:
+ * isWithinInterval(new Date(2014, 0, 10), {
+ *   start: new Date(2014, 0, 1),
+ *   end: new Date(2014, 0, 7)
+ * })
+ * //=> false
+ *
+ * @example
+ * // For date equal to interval start:
+ * isWithinInterval(date, { start, end: date }) // => true
+ *
+ * @example
+ * // For date equal to interval end:
+ * isWithinInterval(date, { start: date, end }) // => true
+ */
+export default function isWithinInterval(dirtyDate, interval) {
+  requiredArgs(2, arguments);
+  var time = toDate(dirtyDate).getTime();
+  var startTime = toDate(interval.start).getTime();
+  var endTime = toDate(interval.end).getTime();
+
+  // Throw an exception if start date is after end date or if any date is `Invalid Date`
+  if (!(startTime <= endTime)) {
+    throw new RangeError('Invalid interval');
+  }
+  return time >= startTime && time <= endTime;
+}
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