initial status

node_modules/dayjs/esm/plugin/isoWeek/index.js

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+import { D, W, Y } from '../../constant';
+var isoWeekPrettyUnit = 'isoweek';
+export default (function (o, c, d) {
+  var getYearFirstThursday = function getYearFirstThursday(year, isUtc) {
+    var yearFirstDay = (isUtc ? d.utc : d)().year(year).startOf(Y);
+    var addDiffDays = 4 - yearFirstDay.isoWeekday();
+
+    if (yearFirstDay.isoWeekday() > 4) {
+      addDiffDays += 7;
+    }
+
+    return yearFirstDay.add(addDiffDays, D);
+  };
+
+  var getCurrentWeekThursday = function getCurrentWeekThursday(ins) {
+    return ins.add(4 - ins.isoWeekday(), D);
+  };
+
+  var proto = c.prototype;
+
+  proto.isoWeekYear = function () {
+    var nowWeekThursday = getCurrentWeekThursday(this);
+    return nowWeekThursday.year();
+  };
+
+  proto.isoWeek = function (week) {
+    if (!this.$utils().u(week)) {
+      return this.add((week - this.isoWeek()) * 7, D);
+    }
+
+    var nowWeekThursday = getCurrentWeekThursday(this);
+    var diffWeekThursday = getYearFirstThursday(this.isoWeekYear(), this.$u);
+    return nowWeekThursday.diff(diffWeekThursday, W) + 1;
+  };
+
+  proto.isoWeekday = function (week) {
+    if (!this.$utils().u(week)) {
+      return this.day(this.day() % 7 ? week : week - 7);
+    }
+
+    return this.day() || 7;
+  };
+
+  var oldStartOf = proto.startOf;
+
+  proto.startOf = function (units, startOf) {
+    var utils = this.$utils();
+    var isStartOf = !utils.u(startOf) ? startOf : true;
+    var unit = utils.p(units);
+
+    if (unit === isoWeekPrettyUnit) {
+      return isStartOf ? this.date(this.date() - (this.isoWeekday() - 1)).startOf('day') : this.date(this.date() - 1 - (this.isoWeekday() - 1) + 7).endOf('day');
+    }
+
+    return oldStartOf.bind(this)(units, startOf);
+  };
+});