let persons = [
	{name: "Иван", age: 17},
	{name: "Мария", age: 35},
	{name: "Алексей", age: 73},
	{name: "Яков", age: 12},
]

const mySort = (arr, sortField, ascDesc = true) => {
	const sortFunc = (a, b) => {
		if (a[sortField] < b[sortField]){
			return ascDesc ? -1 : 1;
		}
		return ascDesc ? 1 : -1;
	}

	return arr.sort(sortFunc);
};

console.log(mySort(persons, 'age'));
console.log(mySort(persons, 'name', false));