Convert integers (<4000) to Roman

integerToRoman.js

var intToRoman = function(num) {
    let romans={
        "1": ["I","V"],
        "2": ["X","L"],
        "3": ["C","D"],
        "4": ["M","M"]
    }
    let s = num.toString();
    let converted="";
    for(let i=0 ; i<s.length; i++){
        let numb= parseInt(s[i]);
        let pos = s.length-i;
        //console.log("Pozisyon:",pos, " sayi:", s[i]);
        if(numb<4){
            converted+=romans[pos][0].repeat(numb);
        }else if(numb===4){
            converted+=romans[pos][0]+romans[pos][1];
        }else if(numb===5){
            converted+=romans[pos][1];
        }else if(numb<9){
            converted+=romans[pos][1]+romans[pos][0].repeat(numb%5);
        }else if(numb===9){
            converted+=romans[pos][0]+romans[pos+1][0];
        }
        
    }
    return converted;
};