index.js 599 B

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  1. import toDate from "../../toDate/index.js";
  2. import requiredArgs from "../requiredArgs/index.js";
  3. import toInteger from "../toInteger/index.js";
  4. export default function setUTCISODay(dirtyDate, dirtyDay) {
  5. requiredArgs(2, arguments);
  6. var day = toInteger(dirtyDay);
  7. if (day % 7 === 0) {
  8. day = day - 7;
  9. }
  10. var weekStartsOn = 1;
  11. var date = toDate(dirtyDate);
  12. var currentDay = date.getUTCDay();
  13. var remainder = day % 7;
  14. var dayIndex = (remainder + 7) % 7;
  15. var diff = (dayIndex < weekStartsOn ? 7 : 0) + day - currentDay;
  16. date.setUTCDate(date.getUTCDate() + diff);
  17. return date;
  18. }