main.mjs

export default function odredi(word) {
        let counterLat = word.match(/[\u{0041}-\u{007a}\u{0100}-\u{017f}]/gui) || false;   //takes the latin characters from the first 512 characters in a string
        if (counterLat) {
            counterLat = counterLat.length;   //counts them, if there are any
        }
        let counterCyrl = word.match(/[\u{0400}-\u{04FF}]/gui) || false;    //takes the cyrillic characters from the first 512 characters in a string
        if (counterCyrl) {
            counterCyrl = counterCyrl.length;   //counts them, if there are any
        }
        if (counterLat > counterCyrl) {    //if there's more latin than cyrillic, it returns ISO code for latin as a string
            return 'Latn';
        }
        else {
            return 'Cyrl';  //otherwise there's more cyrillic, so it returns ISO code for cyrillic as a string
        }
    }