!(function (t, n) {
    if ('object' == typeof exports && 'undefined' != typeof module) {
        module.exports = n();
    } else {
        if ('function' == typeof define && define.amd) {
            define(n);
        } else {
            (t = 'undefined' != typeof globalThis ? globalThis : t || self).dayjs_plugin_quarterOfYear = n();
        }
    }
})(this, function () {
    'use strict';

    var t = 'month';
    var n = 'quarter';
    return function (e, i) {
        var r = i.prototype;
        r.quarter = function (t) {
            return this.$utils().u(t) ? Math.ceil((this.month() + 1) / 3) : this.month((this.month() % 3) + 3 * (t - 1));
        };
        var s = r.add;
        r.add = function (e, i) {
            e = Number(e);
            return this.$utils().p(i) === n ? this.add(3 * e, t) : s.bind(this)(e, i);
        };
        var u = r.startOf;
        r.startOf = function (e, i) {
            var r = this.$utils();
            var s = !!r.u(i) || i;
            if (r.p(e) === n) {
                var o = this.quarter() - 1;
                return s
                    ? this.month(3 * o)
                          .startOf(t)
                          .startOf('day')
                    : this.month(3 * o + 2)
                          .endOf(t)
                          .endOf('day');
            }
            return u.bind(this)(e, i);
        };
    };
});