error while checking for ===

guess_number_recursive.js

function guessNumber(number) {
    guess = prompt("Guess a number between 1 and 100");
    console.log("guess after prompt:", guess);
    guess = +guess;
    console.log("guess after +guess", guess);

    if (guess === number) {
        return console.log("You got it! The number was", number);
    }

    return guessNumber(guess);
}

guessNumber(12);