How do I get my JavaScript cash machine simulator to work in my Node.js terminal?

I am currently making a JavaScript Node.js cash machine simulator using the ‘readline-sync’ library to handle terminal input/output. It allows the user to check their balance, deposit or withdraw money. I have used a loop to keep the application running until the user decides to exit. I’ve also included error handling for invalid inputs e.g. withdrawing more than the total balance. However, when I run the application in my VS Code, it doesn’t work. Can anyone help me make my code ‘readline-sync’ friendly, please?

Here’s my code so far:

const cashMachine = require('readline-sync');

let name,
correct_pass = (/^[0-9]{4}£/),
passTry = 3,
currentBalance = 20000;

// Input a username
function cashMachineName() {
    name = cashMachine.question("Enter your name");
    if (name !== "" && name !== null) {
        cashMachinePassword();
    } else {
        cashMachineName();
    }
}
// Input a valid password
function cashMachinePassword() {
    let passwordEntry = questionInt("Hello " + name + ", please enter your 4-digit PIN");
    checkPassword(passwordEntry);
}
// Verify password meets requirements
function checkPassword(userInput) {
    if (correct_pass.test(userInput)){
        selectAccountType();
    } else {
        while (!(correct_pass.test(userInput))) {
            if (passTry === 1) {
                console.log("Incorrect PIN");
                console.log("Maximum tries exceeded! Your account has been locked. Contact your bank for support.");
                exit();
                break;
 } else {
    passTry -= 1;
    alert("Incorrect PIN. Please try again.");
                alert("You have " + passTry + " chance/s to try");
                cashMachinePassword();
 }
        }
    }
}
// Select which account to use
function selectAccountType() {
    let accountType = questionInt("Which type of account do you have? n 1. Savings n 2. Current n 3. Credit");
    if (accountType !== "" && accountType !== null && !isNan(accountType)) {
        switch (accountType) {
            case 1: 
            balance();
            break;

            case 2:
                withdrawal();
                break;

                case 3:
                    deposit();
                    break;

                    case 4:
                        exit();
                        break;

                        default: 
                        cashMachine.questionInt("Please make a valid operation");
                        selectFunction();
        }
    } else {
        cashMachine.questionInt("Please make a valid selection");
        selectFunction();
    }
}
// Balance 
function balance() {
    cashMachine.questionInt("Your current balance is £" + currentBalance);
    toContinue();
}
// Deposit
function deposit() {
    let depositAmount = questionInt("How much do you want to deposit?");
    if (depositAmount !== "" && depositAmount !== null && !isNaN(depositAmount)) {
        currentBalance += depositAmount;
        console.log("You have successfully deposited £" + depositAmount + "n" + "You know have £" + currentBalance);
        toContinue();
    } else {
        console.log("Error: Please enter a number!");
        deposit();
    }
} 
// Withdrawal
function withdrawal() {
    let withdrawalAmount = questionInt("How much do you want to withdraw? n" + "The minimum amount you can withdraw is £5");
    if (withdrawalAmount !== "" && withdrawalAmount !== null && !isNaN(withdrawalAmount)) {
        if (withdrawalAmount >= 5) {
            if (withdrawalAmount <= currentBalance) {
                currentBalance -= withdrawalAmount;
                console.log("Transaction successful!");
                console.log("Your remaining balance is £" + currentBalance);
                toContinue();
            } else {
                console.log("You do not have sufficent funds!");
                withdrawal();
            }
        } else {
            console.log("You must withdraw at least £5");
            withdrawal();
        }
    } else {
        console.log("Error: Please enter a number!");
        withdrawal();
    }
}
// Check if the user wants to perform another transaction
function toContinue() {
    let yesOrNo = questionInt("Do you want to perform another transaction? n 1. Yes n 2. No");
    if (yesOrNo !== "" && yesOrNo !== null) {
        if (yesOrNo === 2) {
            exit();
        }
        else {
            selectAccountType();
        }
    } else {
        console.log("Please make a valid selection");
        toContinue();
    }
}
// Exit the cash machine simulator
function exit() {
    console.log("Thank you for using our cash machine");
    // To simulate a real cash machine, get ready for next user
    // cashMachineName();
}