initial commit: scaffolding

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diff --git a/node_modules/date-fns/formatISO/index.js b/node_modules/date-fns/formatISO/index.js
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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = formatISO;
+var _index = _interopRequireDefault(require("../toDate/index.js"));
+var _index2 = _interopRequireDefault(require("../_lib/addLeadingZeros/index.js"));
+var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+/**
+ * @name formatISO
+ * @category Common Helpers
+ * @summary Format the date according to the ISO 8601 standard (https://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a003169814.htm).
+ *
+ * @description
+ * Return the formatted date string in ISO 8601 format. Options may be passed to control the parts and notations of the date.
+ *
+ * @param {Date|Number} date - the original date
+ * @param {Object} [options] - an object with options.
+ * @param {'extended'|'basic'} [options.format='extended'] - if 'basic', hide delimiters between date and time values.
+ * @param {'complete'|'date'|'time'} [options.representation='complete'] - format date, time with local time zone, or both.
+ * @returns {String} the formatted date string (in local time zone)
+ * @throws {TypeError} 1 argument required
+ * @throws {RangeError} `date` must not be Invalid Date
+ * @throws {RangeError} `options.format` must be 'extended' or 'basic'
+ * @throws {RangeError} `options.representation` must be 'date', 'time' or 'complete'
+ *
+ * @example
+ * // Represent 18 September 2019 in ISO 8601 format (local time zone is UTC):
+ * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52))
+ * //=> '2019-09-18T19:00:52Z'
+ *
+ * @example
+ * // Represent 18 September 2019 in ISO 8601, short format (local time zone is UTC):
+ * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { format: 'basic' })
+ * //=> '20190918T190052'
+ *
+ * @example
+ * // Represent 18 September 2019 in ISO 8601 format, date only:
+ * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'date' })
+ * //=> '2019-09-18'
+ *
+ * @example
+ * // Represent 18 September 2019 in ISO 8601 format, time only (local time zone is UTC):
+ * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'time' })
+ * //=> '19:00:52Z'
+ */
+function formatISO(date, options) {
+  var _options$format, _options$representati;
+  (0, _index3.default)(1, arguments);
+  var originalDate = (0, _index.default)(date);
+  if (isNaN(originalDate.getTime())) {
+    throw new RangeError('Invalid time value');
+  }
+  var format = String((_options$format = options === null || options === void 0 ? void 0 : options.format) !== null && _options$format !== void 0 ? _options$format : 'extended');
+  var representation = String((_options$representati = options === null || options === void 0 ? void 0 : options.representation) !== null && _options$representati !== void 0 ? _options$representati : 'complete');
+  if (format !== 'extended' && format !== 'basic') {
+    throw new RangeError("format must be 'extended' or 'basic'");
+  }
+  if (representation !== 'date' && representation !== 'time' && representation !== 'complete') {
+    throw new RangeError("representation must be 'date', 'time', or 'complete'");
+  }
+  var result = '';
+  var tzOffset = '';
+  var dateDelimiter = format === 'extended' ? '-' : '';
+  var timeDelimiter = format === 'extended' ? ':' : '';
+
+  // Representation is either 'date' or 'complete'
+  if (representation !== 'time') {
+    var day = (0, _index2.default)(originalDate.getDate(), 2);
+    var month = (0, _index2.default)(originalDate.getMonth() + 1, 2);
+    var year = (0, _index2.default)(originalDate.getFullYear(), 4);
+
+    // yyyyMMdd or yyyy-MM-dd.
+    result = "".concat(year).concat(dateDelimiter).concat(month).concat(dateDelimiter).concat(day);
+  }
+
+  // Representation is either 'time' or 'complete'
+  if (representation !== 'date') {
+    // Add the timezone.
+    var offset = originalDate.getTimezoneOffset();
+    if (offset !== 0) {
+      var absoluteOffset = Math.abs(offset);
+      var hourOffset = (0, _index2.default)(Math.floor(absoluteOffset / 60), 2);
+      var minuteOffset = (0, _index2.default)(absoluteOffset % 60, 2);
+      // If less than 0, the sign is +, because it is ahead of time.
+      var sign = offset < 0 ? '+' : '-';
+      tzOffset = "".concat(sign).concat(hourOffset, ":").concat(minuteOffset);
+    } else {
+      tzOffset = 'Z';
+    }
+    var hour = (0, _index2.default)(originalDate.getHours(), 2);
+    var minute = (0, _index2.default)(originalDate.getMinutes(), 2);
+    var second = (0, _index2.default)(originalDate.getSeconds(), 2);
+
+    // If there's also date, separate it with time with 'T'
+    var separator = result === '' ? '' : 'T';
+
+    // Creates a time string consisting of hour, minute, and second, separated by delimiters, if defined.
+    var time = [hour, minute, second].join(timeDelimiter);
+
+    // HHmmss or HH:mm:ss.
+    result = "".concat(result).concat(separator).concat(time).concat(tzOffset);
+  }
+  return result;
+}
+module.exports = exports.default;
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