export default (function (o, c) {
var proto = c.prototype;
proto.isoWeeksInYear = function () {
var isLeapYear = this.isLeapYear();
var last = this.endOf('y');
var day = last.day();
if (day === 4 || isLeapYear && day === 5) {
return 53;
}
return 52;
};
});