Javascript object array Turkish sorting. Türkçe Sıralama

turkce_siralama.js

var arr = [{id:3,title:"Ali"},{id:3,title:"Veli"},{id:3,title:"Vehbi"}];
arr.sort(turkcesiralama);

function turkcesiralama(a, b){
    var atitle = a.title;
    var btitle = b.title;
    var alfabe = "AaBbCcÇçDdEeFfGgĞğHhIıİiJjKkLlMmNnOoÖöPpQqRrSsŞşTtUuÜüVvWwXxYyZz0123456789";
    if (atitle.length === 0 || btitle.length === 0) {
        return atitle.length - btitle.length;
    }
    for(var i=0;i<atitle.length && i<btitle.length;i++){
        var ai = alfabe.indexOf(atitle[i]);
        var bi = alfabe.indexOf(btitle[i]);
        if (ai !== bi) {
            return ai - bi;
        }
    }
} 

Thank you for solution. That was useful for me.

turkishTextCompare(firstString: string, secondString: string, isDesc = false) {
    const alphabet = 'AaBbCcÇçDdEeFfGgĞğHhIıİiJjKkLlMmNnOoÖöPpQqRrSsŞşTtUuÜüVvWwXxYyZz0123456789';
    const minStringLen = firstString.length > secondString.length ? firstString.length : secondString.length;

    for (let i = 0; i < minStringLen; i++) {
        const fCharPos= alphabet.indexOf(firstString[i]);
        const sCharPos= alphabet.indexOf(secondString[i]);

        if (fCharPos!== sCharPos) {
            return (fCharPos> sCharPos? 1 : -1) * (isDesc ? -1 : 1);
        }
    }

    return 0;
}

usage:
const stringList = ["A", "Ç", "C", "Ş", "S"];
stringList.sort((x, y) => turkishTextCompare(x, y));