## Confirm a Klarna setup

`stripe.confirmKlarnaSetup(clientSecret: string, data?: object)`

Use `stripe.confirmKlarnaSetup` in the [Klarna Payments with Setup Intents](https://docs.stripe.com/payments/klarna/set-up-payment.md) flow when the customer submits your setup form.
When called, it will confirm the `SetupIntent` with `data` you provide, and it will automatically redirect the customer to authorize the setup.
Once authorization is complete, the customer will be redirected back to your specified `return_url`.

> Note that `stripe.confirmKlarnaSetup` may take several seconds to complete.
> During that time, you should disable your form from being resubmitted and show a waiting indicator like a spinner.
> If you receive an error result, you should be sure to show that error to the customer, re-enable the form, and hide the waiting indicator.

- `clientSecret`
  The [client secret](https://docs.stripe.com/api/setup_intents/object.md#setup_intent_object-client_secret) of the `SetupIntent`.

- `data`
  Data to be sent with the request.
Refer to the [Setup Intents API](https://docs.stripe.com/api/setup_intents/confirm.md) for a full list of parameters.
    - `payment_method`
      The `id` of an existing [PaymentMethod](https://docs.stripe.com/api/payment_methods.md).
See the use case sections below for details.
    - `return_url`
      The url your customer will be directed to after they complete authentication.

### with an existing payment method

### Data argument properties

- `payment_method`
  The `id` of an existing `PaymentMethod`.

- `return_url`
  The url your customer will be directed to after they complete authentication.

### Example

```title
Confirm with existing payment method
```

### with an attached PaymentMethod

### Example

```title
Confirm with an attached PaymentMethod
```

### with self collected data

### Data argument properties

- `payment_method`
  Pass an object to confirm with the customer's email and billing country.
    - `billing_details`
      The customer's [billing_details](https://docs.stripe.com/api/payment_methods/create.md#create_payment_method-billing_details).
`email` and `address.country` are required.
      - `email`
        The customer's email.
      - `address`
        The customer's billing address.
        - `country`
          The customer's billing country.

- `return_url`
  The url your customer will be directed to after they complete authentication.

### Example

```title
Confirm with self collected data
```

### Example

```title
Confirm a Klarna setup
```