From e4fa1e69e7ebfb627c7198fd1a9881e9327ec4d4 Mon Sep 17 00:00:00 2001
From: Pinapelz <yukais@pinapelz.com>
Date: Sat, 28 Jun 2025 17:26:46 -0700
Subject: initial commit: scaffolding

---
 .../date-fns/esm/differenceInBusinessDays/index.js | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 node_modules/date-fns/esm/differenceInBusinessDays/index.js

(limited to 'node_modules/date-fns/esm/differenceInBusinessDays/index.js')

diff --git a/node_modules/date-fns/esm/differenceInBusinessDays/index.js b/node_modules/date-fns/esm/differenceInBusinessDays/index.js
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+import addDays from "../addDays/index.js";
+import differenceInCalendarDays from "../differenceInCalendarDays/index.js";
+import isSameDay from "../isSameDay/index.js";
+import isValid from "../isValid/index.js";
+import isWeekend from "../isWeekend/index.js";
+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+import toInteger from "../_lib/toInteger/index.js";
+/**
+ * @name differenceInBusinessDays
+ * @category Day Helpers
+ * @summary Get the number of business days between the given dates.
+ *
+ * @description
+ * Get the number of business day periods between the given dates.
+ * Business days being days that arent in the weekend.
+ * Like `differenceInCalendarDays`, the function removes the times from
+ * the dates before calculating the difference.
+ *
+ * @param {Date|Number} dateLeft - the later date
+ * @param {Date|Number} dateRight - the earlier date
+ * @returns {Number} the number of business days
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // How many business days are between
+ * // 10 January 2014 and 20 July 2014?
+ * const result = differenceInBusinessDays(
+ *   new Date(2014, 6, 20),
+ *   new Date(2014, 0, 10)
+ * )
+ * //=> 136
+ *
+ * // How many business days are between
+ * // 30 November 2021 and 1 November 2021?
+ * const result = differenceInBusinessDays(
+ *   new Date(2021, 10, 30),
+ *   new Date(2021, 10, 1)
+ * )
+ * //=> 21
+ *
+ * // How many business days are between
+ * // 1 November 2021 and 1 December 2021?
+ * const result = differenceInBusinessDays(
+ *   new Date(2021, 10, 1),
+ *   new Date(2021, 11, 1)
+ * )
+ * //=> -22
+ *
+ * // How many business days are between
+ * // 1 November 2021 and 1 November 2021 ?
+ * const result = differenceInBusinessDays(
+ *   new Date(2021, 10, 1),
+ *   new Date(2021, 10, 1)
+ * )
+ * //=> 0
+ */
+export default function differenceInBusinessDays(dirtyDateLeft, dirtyDateRight) {
+  requiredArgs(2, arguments);
+  var dateLeft = toDate(dirtyDateLeft);
+  var dateRight = toDate(dirtyDateRight);
+  if (!isValid(dateLeft) || !isValid(dateRight)) return NaN;
+  var calendarDifference = differenceInCalendarDays(dateLeft, dateRight);
+  var sign = calendarDifference < 0 ? -1 : 1;
+  var weeks = toInteger(calendarDifference / 7);
+  var result = weeks * 5;
+  dateRight = addDays(dateRight, weeks * 7);
+
+  // the loop below will run at most 6 times to account for the remaining days that don't makeup a full week
+  while (!isSameDay(dateLeft, dateRight)) {
+    // sign is used to account for both negative and positive differences
+    result += isWeekend(dateRight) ? 0 : sign;
+    dateRight = addDays(dateRight, sign);
+  }
+  return result === 0 ? 0 : result;
+}
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