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node_modules/date-fns/_lib/getUTCISOWeekYear/index.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = getUTCISOWeekYear;
+var _index = _interopRequireDefault(require("../../toDate/index.js"));
+var _index2 = _interopRequireDefault(require("../requiredArgs/index.js"));
+var _index3 = _interopRequireDefault(require("../startOfUTCISOWeek/index.js"));
+function getUTCISOWeekYear(dirtyDate) {
+  (0, _index2.default)(1, arguments);
+  var date = (0, _index.default)(dirtyDate);
+  var year = date.getUTCFullYear();
+  var fourthOfJanuaryOfNextYear = new Date(0);
+  fourthOfJanuaryOfNextYear.setUTCFullYear(year + 1, 0, 4);
+  fourthOfJanuaryOfNextYear.setUTCHours(0, 0, 0, 0);
+  var startOfNextYear = (0, _index3.default)(fourthOfJanuaryOfNextYear);
+  var fourthOfJanuaryOfThisYear = new Date(0);
+  fourthOfJanuaryOfThisYear.setUTCFullYear(year, 0, 4);
+  fourthOfJanuaryOfThisYear.setUTCHours(0, 0, 0, 0);
+  var startOfThisYear = (0, _index3.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;