tangentlin

function processPayment(amount: number, method: string) {
    switch (method) {
        case 'credit':
            // Process credit card payment
            break;
        case 'paypal':
            // Process PayPal payment
            break;
        case 'bank_transfer':
            // Process bank transfer

tangentlin

interface PaymentMethod {
    process(amount: number): void;
}

const paymentMethods: Record<string, PaymentMethod> = {
    credit: {
        process(amount: number) {
            console.log(`Processing $${amount} via Credit Card`);
            // Credit card processing logic...
        }

tangentlin

interface CreditCardType {
    name: string;
    logoUri: string;
    validate: (number: string) => boolean;
    format: (number: string) => string;
}

const creditCardTypes: Record<string, CreditCardType> = {
    visa: {
        name: "Visa",

tangentlin

function validateAndFormatCard(number: string, type: string) {
    const cardType = creditCardTypes[type];
    if (!cardType) {
        throw new Error('Unsupported card type');
    }
    const isValid = cardType.validate(number);
    const formattedNumber = cardType.format(number);
    return {
        isValid,
        formattedNumber,