import { MS, Y, D, W } from '../../constant';
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export default (function (o, c, d) {
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var proto = c.prototype;
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proto.week = function (week) {
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if (week === void 0) {
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week = null;
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}
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if (week !== null) {
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return this.add((week - this.week()) * 7, D);
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}
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var yearStart = this.$locale().yearStart || 1;
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if (this.month() === 11 && this.date() > 25) {
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// d(this) is for badMutable
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var nextYearStartDay = d(this).startOf(Y).add(1, Y).date(yearStart);
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var thisEndOfWeek = d(this).endOf(W);
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if (nextYearStartDay.isBefore(thisEndOfWeek)) {
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return 1;
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}
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}
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var yearStartDay = d(this).startOf(Y).date(yearStart);
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var yearStartWeek = yearStartDay.startOf(W).subtract(1, MS);
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var diffInWeek = this.diff(yearStartWeek, W, true);
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if (diffInWeek < 0) {
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return d(this).startOf('week').week();
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}
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return Math.ceil(diffInWeek);
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};
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proto.weeks = function (week) {
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if (week === void 0) {
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week = null;
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}
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return this.week(week);
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};
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});
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