ApplePayParams: { applePay?: true; merchantCountryCode: string } | { applePay?: false; merchantCountryCode?: string }

ClientSecretParams: { paymentIntentClientSecret: string; setupIntentClientSecret?: undefined } | { paymentIntentClientSecret?: undefined; setupIntentClientSecret: string }

GooglePayParams: { googlePay?: true; merchantCountryCode: string; testEnv?: boolean } | { googlePay?: false; merchantCountryCode?: string; testEnv?: boolean }

SetupParams: ClientSecretParams & GooglePayParams & ApplePayParams & { allowsDelayedPaymentMethods?: boolean; customFlow?: boolean; customerEphemeralKeySecret?: string; customerId?: string; defaultBillingDetails?: BillingDetails; merchantDisplayName?: string; primaryButtonColor?: string; returnURL?: string; style?: "alwaysLight" | "alwaysDark" | "automatic" }