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export default function romanToInt(s: string): number {    let result = 0;    let index = 0;    while (index < s.length) {        if (![...one_char_to_num.keys()].includes(s[0])) {            throw Error("unexpeted");        }        loop: {            // console.log(loop)            for (const map of [two_char_to_num, one_char_to_num]) {                for (const [char, num] of map) {                    if (s.length === 0) break;
                    // console.log(s, char, num)                    if (char === s.slice(index, char.length + index)) {                        // console.log(s, char, num)                        result += num;                        // s = s.slice(char.length)                        index += char.length;                        break loop;                    }                }            }        }    }
    return result;}const one_char_to_num = new Map<string, number>([    ["M", 1000],    ["I", 1],    ["V", 5],    ["X", 10],    ["L", 50],    ["C", 100],    ["D", 500],]);const two_char_to_num = new Map<string, number>([    ["CM", 900],    ["IV", 4],    ["IX", 9],    ["XL", 40],    ["XC", 90],    ["CD", 400],]);
// console.log(romanToInt("MCMXCIV"))