0007-reverse-integer.ts

const reverse = (x: number): number => {
    const max: number = 2 ** 31 - 1;
    const min: number = -(2 ** 31);

    let result: number = 0;
    while (x !== 0) {
        const digit = x % 10;
        x = Math.trunc(x / 10);

        if (result > max / 10 || (result === max / 10 && digit >= max % 10)) {
            return 0;
        } else if (
            result < min / 10 ||
            (result === max / 10 && digit <= min % 10)
        ) {
            return 0;
        } else {
            result = result * 10 + digit;
        }
    }

    return result;
};