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

    return function (e, t) {
        t.prototype.isLeapYear = function () {
            return (this.$y % 4 == 0 && this.$y % 100 != 0) || this.$y % 400 == 0;
        };
    };
});