Converts numbers in string representation to their int representation using supplied radix.

radix-converter.js

const glbl = global || globalThis || window;
const radixes = '0123456789абвгдеёжзийклмнопрстуфхцчшщъыьэюя';

const parseInt = (text, radix) => {
    const actualRadix = radixes.indexOf(radix);
    const result = glbl.parseInt(text, actualRadix);
    return result;
};

console.log(parseInt('210', 3)); // 21
console.log(parseInt('210', 'а')); // 210
console.log(parseInt('210', 'ё')); // 528
console.log(parseInt('210', 'щ')); // 2628