v1.0 with SW PWA enabled

frontend/node_modules/react-day-picker/src/components/Table/utils/daysToMonthWeeks.ts

@@ -0,0 +1,60 @@
+import {
+  addDays,
+  differenceInCalendarDays,
+  endOfISOWeek,
+  endOfWeek,
+  getISOWeek,
+  getWeek,
+  Locale,
+  startOfISOWeek,
+  startOfWeek
+} from 'date-fns';
+
+import { MonthWeek } from './getMonthWeeks';
+
+/** Return the weeks between two dates.  */
+export function daysToMonthWeeks(
+  fromDate: Date,
+  toDate: Date,
+  options?: {
+    ISOWeek?: boolean;
+    locale?: Locale;
+    weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6;
+    firstWeekContainsDate?: 1 | 4;
+  }
+): MonthWeek[] {
+  const toWeek = options?.ISOWeek
+    ? endOfISOWeek(toDate)
+    : endOfWeek(toDate, options);
+  const fromWeek = options?.ISOWeek
+    ? startOfISOWeek(fromDate)
+    : startOfWeek(fromDate, options);
+
+  const nOfDays = differenceInCalendarDays(toWeek, fromWeek);
+  const days: Date[] = [];
+
+  for (let i = 0; i <= nOfDays; i++) {
+    days.push(addDays(fromWeek, i));
+  }
+
+  const weeksInMonth = days.reduce((result: MonthWeek[], date) => {
+    const weekNumber = options?.ISOWeek
+      ? getISOWeek(date)
+      : getWeek(date, options);
+
+    const existingWeek = result.find(
+      (value) => value.weekNumber === weekNumber
+    );
+    if (existingWeek) {
+      existingWeek.dates.push(date);
+      return result;
+    }
+    result.push({
+      weekNumber,
+      dates: [date]
+    });
+    return result;
+  }, []);
+
+  return weeksInMonth;
+}