It appears you have a well-structured Git repository with various files, including SVG icons and HTML documents. Here's a brief overview:

backend/node_modules/date-fns/setWeek/index.d.ts

@@ -0,0 +1,4 @@
+// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it.
+
+import { setWeek } from 'date-fns'
+export default setWeek

backend/node_modules/date-fns/setWeek/index.js

@@ -0,0 +1,60 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = setWeek;
+var _index = _interopRequireDefault(require("../getWeek/index.js"));
+var _index2 = _interopRequireDefault(require("../toDate/index.js"));
+var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+var _index4 = _interopRequireDefault(require("../_lib/toInteger/index.js"));
+/**
+ * @name setWeek
+ * @category Week Helpers
+ * @summary Set the local week to the given date.
+ *
+ * @description
+ * Set the local week to the given date, saving the weekday number.
+ * The exact calculation depends on the values of
+ * `options.weekStartsOn` (which is the index of the first day of the week)
+ * and `options.firstWeekContainsDate` (which is the day of January, which is always in
+ * the first week of the week-numbering year)
+ *
+ * Week numbering: https://en.wikipedia.org/wiki/Week#Week_numbering
+ *
+ * @param {Date|Number} date - the date to be changed
+ * @param {Number} week - the week of the new date
+ * @param {Object} [options] - an object with options.
+ * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
+ * @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday)
+ * @param {1|2|3|4|5|6|7} [options.firstWeekContainsDate=1] - the day of January, which is always in the first week of the year
+ * @returns {Date} the new date with the local week set
+ * @throws {TypeError} 2 arguments required
+ * @throws {RangeError} `options.weekStartsOn` must be between 0 and 6
+ * @throws {RangeError} `options.firstWeekContainsDate` must be between 1 and 7
+ *
+ * @example
+ * // Set the 1st week to 2 January 2005 with default options:
+ * const result = setWeek(new Date(2005, 0, 2), 1)
+ * //=> Sun Dec 26 2004 00:00:00
+ *
+ * @example
+ * // Set the 1st week to 2 January 2005,
+ * // if Monday is the first day of the week,
+ * // and the first week of the year always contains 4 January:
+ * const result = setWeek(new Date(2005, 0, 2), 1, {
+ *   weekStartsOn: 1,
+ *   firstWeekContainsDate: 4
+ * })
+ * //=> Sun Jan 4 2004 00:00:00
+ */
+function setWeek(dirtyDate, dirtyWeek, options) {
+  (0, _index3.default)(2, arguments);
+  var date = (0, _index2.default)(dirtyDate);
+  var week = (0, _index4.default)(dirtyWeek);
+  var diff = (0, _index.default)(date, options) - week;
+  date.setDate(date.getDate() - diff * 7);
+  return date;
+}
+module.exports = exports.default;

backend/node_modules/date-fns/setWeek/index.js.flow

@@ -0,0 +1,60 @@
+// @flow
+// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it.
+
+export type Interval = {
+  start: Date | number,
+  end: Date | number,
+}
+
+export type Locale = {
+  code?: string,
+  formatDistance?: (...args: Array<any>) => any,
+  formatRelative?: (...args: Array<any>) => any,
+  localize?: {
+    ordinalNumber: (...args: Array<any>) => any,
+    era: (...args: Array<any>) => any,
+    quarter: (...args: Array<any>) => any,
+    month: (...args: Array<any>) => any,
+    day: (...args: Array<any>) => any,
+    dayPeriod: (...args: Array<any>) => any,
+  },
+  formatLong?: {
+    date: (...args: Array<any>) => any,
+    time: (...args: Array<any>) => any,
+    dateTime: (...args: Array<any>) => any,
+  },
+  match?: {
+    ordinalNumber: (...args: Array<any>) => any,
+    era: (...args: Array<any>) => any,
+    quarter: (...args: Array<any>) => any,
+    month: (...args: Array<any>) => any,
+    day: (...args: Array<any>) => any,
+    dayPeriod: (...args: Array<any>) => any,
+  },
+  options?: {
+    weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6,
+    firstWeekContainsDate?: 1 | 2 | 3 | 4 | 5 | 6 | 7,
+  },
+}
+
+export type Duration = {
+  years?: number,
+  months?: number,
+  weeks?: number,
+  days?: number,
+  hours?: number,
+  minutes?: number,
+  seconds?: number,
+}
+
+export type Day = 0 | 1 | 2 | 3 | 4 | 5 | 6
+
+declare module.exports: (
+  date: Date | number,
+  week: number,
+  options?: {
+    locale?: Locale,
+    weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6,
+    firstWeekContainsDate?: 1 | 2 | 3 | 4 | 5 | 6 | 7,
+  }
+) => Date

backend/node_modules/date-fns/setWeek/package.json

@@ -0,0 +1,5 @@
+{
+  "sideEffects": false,
+  "module": "../esm/setWeek/index.js",
+  "typings": "../typings.d.ts"
+}