Current File : /var/www/html/node_modules/date-fns/esm/_lib/getUTCWeekYear/index.js
import toDate from "../../toDate/index.js";
import requiredArgs from "../requiredArgs/index.js";
import startOfUTCWeek from "../startOfUTCWeek/index.js";
import toInteger from "../toInteger/index.js"; // 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
export default function getUTCWeekYear(dirtyDate, dirtyOptions) {
requiredArgs(1, arguments);
var date = toDate(dirtyDate);
var year = date.getUTCFullYear();
var options = dirtyOptions || {};
var locale = options.locale;
var localeFirstWeekContainsDate = locale && locale.options && locale.options.firstWeekContainsDate;
var defaultFirstWeekContainsDate = localeFirstWeekContainsDate == null ? 1 : toInteger(localeFirstWeekContainsDate);
var firstWeekContainsDate = options.firstWeekContainsDate == null ? defaultFirstWeekContainsDate : toInteger(options.firstWeekContainsDate); // Test if weekStartsOn is between 1 and 7 _and_ is not NaN
if (!(firstWeekContainsDate >= 1 && firstWeekContainsDate <= 7)) {
throw new RangeError('firstWeekContainsDate must be between 1 and 7 inclusively');
}
var firstWeekOfNextYear = new Date(0);
firstWeekOfNextYear.setUTCFullYear(year + 1, 0, firstWeekContainsDate);
firstWeekOfNextYear.setUTCHours(0, 0, 0, 0);
var startOfNextYear = startOfUTCWeek(firstWeekOfNextYear, dirtyOptions);
var firstWeekOfThisYear = new Date(0);
firstWeekOfThisYear.setUTCFullYear(year, 0, firstWeekContainsDate);
firstWeekOfThisYear.setUTCHours(0, 0, 0, 0);
var startOfThisYear = startOfUTCWeek(firstWeekOfThisYear, dirtyOptions);
if (date.getTime() >= startOfNextYear.getTime()) {
return year + 1;
} else if (date.getTime() >= startOfThisYear.getTime()) {
return year;
} else {
return year - 1;
}
}
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