class Greeter {
    greeting: string;
    pickupItems: string[];

    constructor() {
        var self = this;
        var tagDeliveryTimeArry = [];
        self.pickupItems = [];
        self.pickupItems.push("2018-05-10 15:59:58");
        self.pickupItems.push("2018-05-10 15:59:59");
        self.pickupItems.push("2018-05-10 15:59:20");
        self.pickupItems.push("");
        self.pickupItems.push("2018-05-10 15:05:55");
        self.pickupItems.push("2018-05-10 15:55:21");

        var secondPickupItem = self.pickupItems;

        secondPickupItem[1] = "New stuff";

        for (var i = 0; i < self.pickupItems.length; i++) {
            if (self.pickupItems[i] != null && self.pickupItems[i] != "" ) {
                tagDeliveryTimeArry.push(Date.parse(self.pickupItems[i]));
            }
        }
        console.log(tagDeliveryTimeArry);
        if (tagDeliveryTimeArry.length > 0) {
            var newDate;
            //console.log(Math.min(...tagDeliveryTimeArry));
            newDate = self.formatTime("yyyy-MM-dd hh:mm:ss", new Date((Math.min(...tagDeliveryTimeArry))));
            console.log(newDate);
        }
        console.log(self.pickupItems);

        var list = [
            {name: "1", lastname: "foo1", age: "16"},
            {name: "2", lastname: "foo", age: "13"},
            {name: "3", lastname: "foo1", age: "11"},
            {name: "4", lastname: "foo", age: "11"},
            {name: "5", lastname: "foo1", age: "16"},
            {name: "6", lastname: "foo", age: "16"},
            {name: "7", lastname: "foo1", age: "13"},
            {name: "8", lastname: "foo1", age: "16"},
            {name: "9", lastname: "foo", age: "13"},
            {name: "0", lastname: "foo", age: "16"}
        ];

        var result = self.groupBy(list, function (item) {
            return [item.lastname, item.age];
        })

        console.log(result);
    }
    public formatTime = (format: string, date?: any): any => {
        var newTime = new Date();
        if (date) newTime = date;
        var o = {
            "M+": newTime.getMonth() + 1,
            "d+": newTime.getDate(),
            "h+": newTime.getHours(),
            "m+": newTime.getMinutes(),
            "s+": newTime.getSeconds(),
            "q+": Math.floor((newTime.getMonth() + 3) / 3),
            "S": newTime.getMilliseconds()
        }
        if (/(y+)/.test(format)) {
            format = format.replace(RegExp.$1, (newTime.getFullYear() + "").substr(4 - RegExp.$1.length))
        }
        if (/(f+)/.test(format)) {
            var milliseconds = (Math.floor(Math.random() * 90000000) + 10000000).toString() + newTime.getMilliseconds();
            format = format.replace(RegExp.$1, milliseconds.substr(milliseconds.length - RegExp.$1.length))
        }
        for (var k in o) {
            if (new RegExp("(" + k + ")").test(format)) format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length))
        }
        return format
    }

    public groupBy = (arr: any, fnc: any): any => {
        var groups = {};

        arr.forEach(function (o) {
            var group = JSON.stringify(fnc(o));

            groups[group] = groups[group] || [];
            groups[group].push(o);
        });

        return Object.keys(groups).map(function (group) {
            return groups[group];
        })
    }
}

let greeter = new Greeter();