var myArr = [
    { name: "Mike", rank: 4 },
    { name: "OtherName1", rank: 2 },
    { name: "OtherName2", rank: 7 },
    { name: "OtherName3", rank: 1 },
];

var filteredRes = Enumerable
        .from(myArr)
        .where(x => x.rank < 4)
        .orderBy(ob => ob.rank)
        .toArray();

console.log(filteredRes);

var firstNode = Enumerable
        .from(filteredRes)
        .first();

console.log(firstNode);