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Current File : /var/www/html/node_modules/date-fns/_lib/startOfUTCWeek/index.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = startOfUTCWeek;

var _index = _interopRequireDefault(require("../../toDate/index.js"));

var _index2 = _interopRequireDefault(require("../requiredArgs/index.js"));

var _index3 = _interopRequireDefault(require("../toInteger/index.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function startOfUTCWeek(dirtyDate, dirtyOptions) {
  (0, _index2.default)(1, arguments);
  var options = dirtyOptions || {};
  var locale = options.locale;
  var localeWeekStartsOn = locale && locale.options && locale.options.weekStartsOn;
  var defaultWeekStartsOn = localeWeekStartsOn == null ? 0 : (0, _index3.default)(localeWeekStartsOn);
  var weekStartsOn = options.weekStartsOn == null ? defaultWeekStartsOn : (0, _index3.default)(options.weekStartsOn); // Test if weekStartsOn is between 0 and 6 _and_ is not NaN

  if (!(weekStartsOn >= 0 && weekStartsOn <= 6)) {
    throw new RangeError('weekStartsOn must be between 0 and 6 inclusively');
  }

  var date = (0, _index.default)(dirtyDate);
  var day = date.getUTCDay();
  var diff = (day < weekStartsOn ? 7 : 0) + day - weekStartsOn;
  date.setUTCDate(date.getUTCDate() - diff);
  date.setUTCHours(0, 0, 0, 0);
  return date;
}

module.exports = exports.default;

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