index.js 725 B

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  1. "use strict";
  2. var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
  3. Object.defineProperty(exports, "__esModule", {
  4. value: true
  5. });
  6. exports.default = startOfUTCISOWeek;
  7. var _index = _interopRequireDefault(require("../../toDate/index.js"));
  8. var _index2 = _interopRequireDefault(require("../requiredArgs/index.js"));
  9. function startOfUTCISOWeek(dirtyDate) {
  10. (0, _index2.default)(1, arguments);
  11. var weekStartsOn = 1;
  12. var date = (0, _index.default)(dirtyDate);
  13. var day = date.getUTCDay();
  14. var diff = (day < weekStartsOn ? 7 : 0) + day - weekStartsOn;
  15. date.setUTCDate(date.getUTCDate() - diff);
  16. date.setUTCHours(0, 0, 0, 0);
  17. return date;
  18. }
  19. module.exports = exports.default;