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

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

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

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = getISOWeekYear;
+var _index = _interopRequireDefault(require("../toDate/index.js"));
+var _index2 = _interopRequireDefault(require("../startOfISOWeek/index.js"));
+var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+/**
+ * @name getISOWeekYear
+ * @category ISO Week-Numbering Year Helpers
+ * @summary Get the ISO week-numbering year of the given date.
+ *
+ * @description
+ * Get the ISO week-numbering year of the given date,
+ * which always starts 3 days before the year's first Thursday.
+ *
+ * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
+ *
+ * @param {Date|Number} date - the given date
+ * @returns {Number} the ISO week-numbering year
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // Which ISO-week numbering year is 2 January 2005?
+ * const result = getISOWeekYear(new Date(2005, 0, 2))
+ * //=> 2004
+ */
+function getISOWeekYear(dirtyDate) {
+  (0, _index3.default)(1, arguments);
+  var date = (0, _index.default)(dirtyDate);
+  var year = date.getFullYear();
+  var fourthOfJanuaryOfNextYear = new Date(0);
+  fourthOfJanuaryOfNextYear.setFullYear(year + 1, 0, 4);
+  fourthOfJanuaryOfNextYear.setHours(0, 0, 0, 0);
+  var startOfNextYear = (0, _index2.default)(fourthOfJanuaryOfNextYear);
+  var fourthOfJanuaryOfThisYear = new Date(0);
+  fourthOfJanuaryOfThisYear.setFullYear(year, 0, 4);
+  fourthOfJanuaryOfThisYear.setHours(0, 0, 0, 0);
+  var startOfThisYear = (0, _index2.default)(fourthOfJanuaryOfThisYear);
+  if (date.getTime() >= startOfNextYear.getTime()) {
+    return year + 1;
+  } else if (date.getTime() >= startOfThisYear.getTime()) {
+    return year;
+  } else {
+    return year - 1;
+  }
+}
+module.exports = exports.default;

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

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+// @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) => number

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

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+{
+  "sideEffects": false,
+  "module": "../esm/getISOWeekYear/index.js",
+  "typings": "../typings.d.ts"
+}