typescript的lambads解决this关键字找不到属性

var people = {
    name: ["abc", "jack", "pepter", "jim"],
    getname: function() {
        
        return function () {
            var i = Math.floor((Math.random() * 4));
            return {
                n: this.name[i]
            };
        };
    }
};
var myName = people.getname();

alert("name is "+myName().n);

var people = {
    name: ["abc", "jack", "pepter", "jim"],
    getname: function() {
        var name2 = this.name;
        return function () {
            var i = Math.floor((Math.random() * 4));
            return {
                n: name2[i]
            };
        };
    }
};
var myName = people.getname();

alert("name is "+myName().n);