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- import { Q, M, D } from '../../constant';
- export default (function (o, c) {
- var proto = c.prototype;
-
- proto.quarter = function (quarter) {
- if (!this.$utils().u(quarter)) {
- return this.month(this.month() % 3 + (quarter - 1) * 3);
- }
-
- return Math.ceil((this.month() + 1) / 3);
- };
-
- var oldAdd = proto.add;
-
- proto.add = function (number, units) {
- number = Number(number); // eslint-disable-line no-param-reassign
-
- var unit = this.$utils().p(units);
-
- if (unit === Q) {
- return this.add(number * 3, M);
- }
-
- return oldAdd.bind(this)(number, units);
- };
-
- 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 === Q) {
- var quarter = this.quarter() - 1;
- return isStartOf ? this.month(quarter * 3).startOf(M).startOf(D) : this.month(quarter * 3 + 2).endOf(M).endOf(D);
- }
-
- return oldStartOf.bind(this)(units, startOf);
- };
- });
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