> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dodopayments.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Adaptador de SvelteKit

> Aprende a integrar Dodo Payments con tu proyecto SvelteKit App Router utilizando nuestro Adaptador de SvelteKit. Cubre el proceso de pago, el portal del cliente, webhooks y la configuración de un entorno seguro.

<CardGroup cols={2}>
  <Card title="Checkout Handler" icon="cart-shopping" href="#checkout-route-handler">
    Integra el checkout de Dodo Payments en tu app SvelteKit.
  </Card>

  <Card title="Customer Portal" icon="user" href="#customer-portal-route-handler">
    Permite que los clientes gestionen sus suscripciones y detalles.
  </Card>

  <Card title="Webhooks" icon="bell" href="#webhook-route-handler">
    Recibe y procesa eventos webhook de Dodo Payments.
  </Card>
</CardGroup>

## Instalación

<Steps>
  <Step title="Install the package">
    Ejecuta el siguiente comando en la raíz de tu proyecto:

    ```bash theme={null}
    npm install @dodopayments/sveltekit
    ```
  </Step>

  <Step title="Set up environment variables">
    Crea un archivo <code>.env</code> en la raíz de tu proyecto:

    ```env expandable theme={null}
    DODO_PAYMENTS_API_KEY=your-api-key
    DODO_PAYMENTS_WEBHOOK_KEY=your-webhook-secret
    DODO_PAYMENTS_ENVIRONMENT="test_mode" or "live_mode"
    DODO_PAYMENTS_RETURN_URL=https://yourdomain.com/checkout/success
    ```

    <Warning>
      Nunca subas tu archivo <code>.env</code> ni secretos al control de versiones.
    </Warning>
  </Step>
</Steps>

## Ejemplos de Manejadores de Rutas

<Info>
  Todos los ejemplos asumen que estás usando el App Router de SvelteKit.
</Info>

<Tabs>
  <Tab title="Checkout Handler">
    <Info>
      Utiliza este manejador para integrar el checkout de Dodo Payments en tu app SvelteKit. Soporta flujos de pago estáticos (GET), dinámicos (POST) y de sesión (POST).
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/checkout/+server.ts
      import { Checkout } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

      const checkoutGetHandler = Checkout({
          bearerToken: DODO_PAYMENTS_API_KEY,
          returnUrl: DODO_PAYMENTS_RETURN_URL,
          environment: DODO_PAYMENTS_ENVIRONMENT,
          type: "static",
      });

      const checkoutPostHandler = Checkout({
          bearerToken: DODO_PAYMENTS_API_KEY,
          returnUrl: DODO_PAYMENTS_RETURN_URL,
          environment: DODO_PAYMENTS_ENVIRONMENT,
          type: "session", // or "dynamic" for dynamic link
      });

      export const GET = checkoutGetHandler.GET;
      export const POST = checkoutPostHandler.POST;
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Static Checkout Curl example expandable theme={null}
      curl --request GET \
      --url 'https://example.com/api/checkout?productId=pdt_fqJhl7pxKWiLhwQR042rh' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Dynamic Checkout Curl example expandable theme={null}
      curl --request POST \
      --url https://example.com/api/checkout \
      --header 'Content-Type: application/json' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test \
      --data '{ 
      "billing": {
        "city": "Texas",
        "country": "US",
        "state": "Texas",
        "street": "56, hhh",
        "zipcode": "560000"
      },
      "customer": {
        "email": "test@example.com",
        	"name": "test"
      },
      "metadata": {},
      "payment_link": true,
        "product_id": "pdt_QMDuvLkbVzCRWRQjLNcs",
        "quantity": 1,
        "billing_currency": "USD",
        "discount_codes": ["IKHZ23M9GQ"],
        "return_url": "https://example.com",
        "trial_period_days": 10
      }'
      ```
    </CodeGroup>

    <CodeGroup>
      ```curl Checkout Session Curl example expandable theme={null}
      curl --request POST \
      --url https://example.com/api/checkout \
      --header 'Content-Type: application/json' \
      --header 'User-Agent: insomnia/11.2.0' \
      --cookie mode=test \
      --data '{ 
      "product_cart": [
        {
          "product_id": "pdt_QMDuvLkbVzCRWRQjLNcs",
          "quantity": 1
        }
      ],
      "customer": {
        "email": "test@example.com",
        "name": "test"
      },
      "return_url": "https://example.com/success"
      }'
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Customer Portal Handler">
    <Info>
      Utiliza este manejador para permitir que los clientes gestionen sus suscripciones y datos mediante el portal de clientes de Dodo Payments.
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/checkout/+server.ts
      import { CustomerPortal } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

      const customerPortalHandler = CustomerPortal({
          bearerToken: DODO_PAYMENTS_API_KEY,
          environment: DODO_PAYMENTS_ENVIRONMENT,
      });

      export const GET = customerPortalHandler.GET;
      ```
    </CodeGroup>
  </Tab>

  <Tab title="Webhook Handler">
    <Info>
      Utiliza este manejador para recibir y procesar de forma segura eventos webhook de Dodo Payments en tu app SvelteKit.
    </Info>

    <CodeGroup>
      ```typescript SvelteKit Route Handler expandable theme={null}
      // src/routes/api/webhook/+server.ts
      import { Webhooks } from "@dodopayments/sveltekit";
      import { DODO_PAYMENTS_WEBHOOK_KEY } from '$env/static/private';

      export const POST = Webhooks({
          webhookKey: DODO_PAYMENTS_WEBHOOK_KEY,
          onPayload: async (payload) => {
              console.log(payload);
          }
      });
      ```
    </CodeGroup>
  </Tab>
</Tabs>

## Manejador de Ruta de Checkout

<Info>
  Dodo Payments admite tres tipos de flujos de pago para integrar pagos en tu sitio web; este adaptador los soporta todos.
</Info>

* **Enlaces de Pago Estáticos:** URLs instantáneamente compartibles para la recolección de pagos rápida y sin código.
* **Enlaces de Pago Dinámicos:** Genera programáticamente enlaces de pago con detalles personalizados utilizando la API o SDKs.
* **Sesiones de Checkout:** Crea experiencias de checkout seguras y personalizables con carritos de productos preconfigurados y detalles del cliente.

<AccordionGroup>
  <Accordion title="Static Checkout (GET)">
    ### Parámetros de consulta compatibles

    <ParamField query="productId" type="string" required>
      Identificador del producto (p. ej., <code>?productId=pdt\_nZuwz45WAs64n3l07zpQR</code>).
    </ParamField>

    <ParamField query="quantity" type="integer">
      Cantidad del producto.
    </ParamField>

    <ParamField query="fullName" type="string">
      Nombre completo del cliente.
    </ParamField>

    <ParamField query="firstName" type="string">
      Nombre de pila del cliente.
    </ParamField>

    <ParamField query="lastName" type="string">
      Apellido del cliente.
    </ParamField>

    <ParamField query="email" type="string">
      Correo electrónico del cliente.
    </ParamField>

    <ParamField query="country" type="string">
      País del cliente.
    </ParamField>

    <ParamField query="addressLine" type="string">
      Dirección del cliente.
    </ParamField>

    <ParamField query="city" type="string">
      Ciudad del cliente.
    </ParamField>

    <ParamField query="state" type="string">
      Estado/provincia del cliente.
    </ParamField>

    <ParamField query="zipCode" type="string">
      Código postal del cliente.
    </ParamField>

    <ParamField query="disableFullName" type="boolean">
      Desactiva el campo de nombre completo.
    </ParamField>

    <ParamField query="disableFirstName" type="boolean">
      Desactiva el campo de nombre de pila.
    </ParamField>

    <ParamField query="disableLastName" type="boolean">
      Desactiva el campo de apellido.
    </ParamField>

    <ParamField query="disableEmail" type="boolean">
      Desactiva el campo de correo electrónico.
    </ParamField>

    <ParamField query="disableCountry" type="boolean">
      Desactiva el campo de país.
    </ParamField>

    <ParamField query="disableAddressLine" type="boolean">
      Desactiva el campo de dirección.
    </ParamField>

    <ParamField query="disableCity" type="boolean">
      Desactiva el campo de ciudad.
    </ParamField>

    <ParamField query="disableState" type="boolean">
      Desactiva el campo de estado.
    </ParamField>

    <ParamField query="disableZipCode" type="boolean">
      Desactiva el campo de código postal.
    </ParamField>

    <ParamField query="paymentCurrency" type="string">
      Especifica la moneda de pago (p. ej., <code>USD</code>).
    </ParamField>

    <ParamField query="showCurrencySelector" type="boolean">
      Muestra el selector de moneda.
    </ParamField>

    <ParamField query="paymentAmount" type="integer">
      Especifica el monto del pago (p. ej., <code>1000</code> para \$10.00).
    </ParamField>

    <ParamField query="showDiscounts" type="boolean">
      Muestra los campos de descuento.
    </ParamField>

    <ParamField query="metadata_*" type="string">
      Cualquier parámetro de consulta que comience con <code>metadata\_</code> se pasará como metadata.
    </ParamField>

    <Warning>
      Si falta <code>productId</code>, el manejador devuelve una respuesta 400. Los parámetros de consulta inválidos también resultan en una respuesta 400.
    </Warning>

    ### Formato de Respuesta

    El checkout estático devuelve una respuesta JSON con la URL de checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/"
    }
    ```
  </Accordion>

  <Accordion title="Dynamic Checkout (POST)">
    * Envía los parámetros como un cuerpo JSON en una solicitud POST.
    * Soporta pagos únicos y recurrentes.
    * Para obtener una lista completa de los campos compatibles en el cuerpo POST, consulta:
      * [Request body for a One Time Payment Product](https://docs.dodopayments.com/api-reference/payments/post-payments)
      * [Request body for a Subscription Product](https://docs.dodopayments.com/api-reference/subscriptions/post-subscriptions)

    ### Formato de Respuesta

    El checkout dinámico devuelve una respuesta JSON con la URL de checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/"
    }
    ```
  </Accordion>

  <Accordion title="Checkout Sessions (POST)">
    Las sesiones de checkout ofrecen una experiencia de pago alojada más segura que maneja todo el flujo de pago tanto para compras únicas como para suscripciones con control completo de personalización.

    Consulta la [Guía de Integración de Sesiones de Checkout](https://docs.dodopayments.com/developer-resources/checkout-session) para más detalles y una lista completa de campos soportados.

    ### Formato de Respuesta

    Las sesiones de checkout devuelven una respuesta JSON con la URL de checkout:

    ```json theme={null}
    {
      "checkout_url": "https://checkout.dodopayments.com/session/..."
    }
    ```
  </Accordion>
</AccordionGroup>

## Manejador de Ruta del Portal del Cliente

El Manejador de Ruta del Portal del Cliente te permite integrar sin problemas el portal del cliente de Dodo Payments en tu aplicación SvelteKit.

### Parámetros de consulta

<ParamField query="customer_id" type="string" required>
  El ID del cliente para la sesión del portal (p. ej., <code>?customer\_id=cus\_123</code>).
</ParamField>

<ParamField query="send_email" type="boolean">
  Si se establece en <code>true</code>, envía un correo al cliente con el enlace del portal.
</ParamField>

<Warning>
  Devuelve 400 si falta <code>customer\_id</code>.
</Warning>

## Manejador de Ruta de Webhook

* **Método:** Solo se admiten solicitudes POST. Otros métodos devuelven 405.
* **Verificación de Firma:** Verifica la firma del webhook utilizando <code>webhookKey</code>. Devuelve 401 si la verificación falla.
* **Validación de Payload:** Validado con Zod. Devuelve 400 para payloads inválidos.
* **Manejo de Errores:**
  * 401: Firma inválida
  * 400: Payload inválido
  * 500: Error interno durante la verificación
* **Enrutamiento de Eventos:** Llama al manejador de eventos apropiado según el tipo de payload.

### Controladores de eventos webhook compatibles

<CodeGroup>
  ```typescript Typescript expandable theme={null}
  onPayload?: (payload: WebhookPayload) => Promise<void>;
  onPaymentSucceeded?: (payload: WebhookPayload) => Promise<void>;
  onPaymentFailed?: (payload: WebhookPayload) => Promise<void>;
  onPaymentProcessing?: (payload: WebhookPayload) => Promise<void>;
  onPaymentCancelled?: (payload: WebhookPayload) => Promise<void>;
  onRefundSucceeded?: (payload: WebhookPayload) => Promise<void>;
  onRefundFailed?: (payload: WebhookPayload) => Promise<void>;
  onDisputeOpened?: (payload: WebhookPayload) => Promise<void>;
  onDisputeExpired?: (payload: WebhookPayload) => Promise<void>;
  onDisputeAccepted?: (payload: WebhookPayload) => Promise<void>;
  onDisputeCancelled?: (payload: WebhookPayload) => Promise<void>;
  onDisputeChallenged?: (payload: WebhookPayload) => Promise<void>;
  onDisputeWon?: (payload: WebhookPayload) => Promise<void>;
  onDisputeLost?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionActive?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionOnHold?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionRenewed?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionPlanChanged?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionCancelled?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionFailed?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionExpired?: (payload: WebhookPayload) => Promise<void>;
  onSubscriptionUpdated?: (payload: WebhookPayload) => Promise<void>;
  onLicenseKeyCreated?: (payload: WebhookPayload) => Promise<void>;
  onAbandonedCheckoutDetected?: (payload: WebhookPayload) => Promise<void>;
  onAbandonedCheckoutRecovered?: (payload: WebhookPayload) => Promise<void>;
  onDunningStarted?: (payload: WebhookPayload) => Promise<void>;
  onDunningRecovered?: (payload: WebhookPayload) => Promise<void>;
  onCreditAdded?: (payload: WebhookPayload) => Promise<void>;
  onCreditDeducted?: (payload: WebhookPayload) => Promise<void>;
  onCreditExpired?: (payload: WebhookPayload) => Promise<void>;
  onCreditRolledOver?: (payload: WebhookPayload) => Promise<void>;
  onCreditRolloverForfeited?: (payload: WebhookPayload) => Promise<void>;
  onCreditOverageCharged?: (payload: WebhookPayload) => Promise<void>;
  onCreditManualAdjustment?: (payload: WebhookPayload) => Promise<void>;
  onCreditBalanceLow?: (payload: WebhookPayload) => Promise<void>;
  ```
</CodeGroup>

***

## Solicitud para LLM

```

You are an expert SvelteKit developer assistant. Your task is to guide a user through integrating the @dodopayments/sveltekit adapter into their existing SvelteKit project.

The @dodopayments/sveltekit adapter provides route handlers for Dodo Payments' Checkout, Customer Portal, and Webhook functionalities, designed for the SvelteKit App Router.

First, install the necessary packages. Use the package manager appropriate for your project (npm, yarn, or bun) based on the presence of lock files (e.g., package-lock.json for npm, yarn.lock for yarn, bun.lockb for bun):

npm install @dodopayments/sveltekit

Here's how you should structure your response:

    Ask the user which functionalities they want to integrate.

"Which parts of the @dodopayments/sveltekit adapter would you like to integrate into your project? You can choose one or more of the following:

    Checkout Route Handler (for handling product checkouts)

    Customer Portal Route Handler (for managing customer subscriptions/details)

    Webhook Route Handler (for receiving Dodo Payments webhook events)

    All (integrate all three)"

    Based on the user's selection, provide detailed integration steps for each chosen functionality.

If Checkout Route Handler is selected:

Purpose: This handler manages different types of checkout flows. All checkout types (static, dynamic, and sessions) return JSON responses with checkout URLs for programmatic handling.
File Creation: Create a new file at app/checkout/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/checkout/+server.ts
import { Checkout } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

const checkoutGetHandler = Checkout({
    bearerToken: DODO_PAYMENTS_API_KEY,
    returnUrl: DODO_PAYMENTS_RETURN_URL,
    environment: DODO_PAYMENTS_ENVIRONMENT,
    type: "static",
});

const checkoutPostHandler = Checkout({
    bearerToken: DODO_PAYMENTS_API_KEY,
    returnUrl: DODO_PAYMENTS_RETURN_URL,
    environment: DODO_PAYMENTS_ENVIRONMENT,
    type: "session", // or "dynamic" for dynamic link
});

export const GET = checkoutGetHandler.GET;
export const POST = checkoutPostHandler.POST;

Configuration & Usage:

    bearerToken: Your Dodo Payments API key. It's recommended to set this via the DODO_PAYMENTS_API_KEY environment variable.

    returnUrl: (Optional) The URL to redirect the user to after a successful checkout.

    environment: (Optional) Set to "test_mode" for testing, or omit/set to "live_mode" for production.

    type: (Optional) Set to "static" for GET/static checkout, "dynamic" for POST/dynamic checkout, or "session" for POST/checkout sessions. Defaults to "static".

Static Checkout (GET) Query Parameters:

    productId (required): Product identifier (e.g., ?productId=pdt_nZuwz45WAs64n3l07zpQR)

    quantity (optional): Quantity of the product

    Customer Fields (optional): fullName, firstName, lastName, email, country, addressLine, city, state, zipCode

    Disable Flags (optional, set to true to disable): disableFullName, disableFirstName, disableLastName, disableEmail, disableCountry, disableAddressLine, disableCity, disableState, disableZipCode

    Advanced Controls (optional): paymentCurrency, showCurrencySelector, paymentAmount, showDiscounts

    Metadata (optional): Any query parameter starting with metadata_ (e.g., ?metadata_userId=abc123)
    
    Returns: {"checkout_url": "https://checkout.dodopayments.com/..."}

Dynamic Checkout (POST) - Returns JSON with checkout_url: Parameters are sent as a JSON body. Supports both one-time and recurring payments. Returns: {"checkout_url": "https://checkout.dodopayments.com/..."}. For a complete list of supported POST body fields, refer to:

    Docs - One Time Payment Product: https://docs.dodopayments.com/api-reference/payments/post-payments

    Docs - Subscription Product: https://docs.dodopayments.com/api-reference/subscriptions/post-subscriptions

Checkout Sessions (POST) - (Recommended) A more customizable checkout experience. Returns JSON with checkout_url: Parameters are sent as a JSON body. Supports both one-time and recurring payments. Returns: {"checkout_url": "https://checkout.dodopayments.com/session/..."}. For a complete list of supported fields, refer to:

  Checkout Sessions Integration Guide: https://docs.dodopayments.com/developer-resources/checkout-session

Error Handling: If productId is missing or other parameters are invalid, the handler will return a 400 response.

If Customer Portal Route Handler is selected:

Purpose: This handler redirects authenticated users to their Dodo Payments customer portal.
File Creation: Create a new file at app/customer-portal/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/checkout/+server.ts
import { CustomerPortal } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_API_KEY, DODO_PAYMENTS_RETURN_URL, DODO_PAYMENTS_ENVIRONMENT } from '$env/static/private';

const customerPortalHandler = CustomerPortal({
    bearerToken: DODO_PAYMENTS_API_KEY,
    environment: DODO_PAYMENTS_ENVIRONMENT,
});

export const GET = customerPortalHandler.GET;

Query Parameters:

    customer_id (required): The customer ID for the portal session (e.g., ?customer_id=cus_123)

    send_email (optional, boolean): If set to true, sends an email to the customer with the portal link.

    Returns 400 if customer_id is missing.

If Webhook Route Handler is selected:

Purpose: This handler processes incoming webhook events from Dodo Payments, allowing your application to react to events like successful payments, refunds, or subscription changes.
File Creation: Create a new file at app/api/webhook/dodo-payments/route.ts in your SvelteKit project.

Code Snippet:

// src/routes/api/webhook/+server.ts
import { Webhooks } from "@dodopayments/sveltekit";
import { DODO_PAYMENTS_WEBHOOK_KEY } from '$env/static/private';

export const POST = Webhooks({
    webhookKey: DODO_PAYMENTS_WEBHOOK_KEY,
    onPayload: async (payload) => {
        console.log(payload);
    }
});

Handler Details:

    Method: Only POST requests are supported. Other methods return 405.

    Signature Verification: The handler verifies the webhook signature using the webhookKey and returns 401 if verification fails.

    Payload Validation: The payload is validated with Zod. Returns 400 for invalid payloads.

Error Handling:

    401: Invalid signature

    400: Invalid payload

    500: Internal error during verification

Event Routing: Calls the appropriate event handler based on the payload type.

Supported Webhook Event Handlers:

    onPayload?: (payload: WebhookPayload) => Promise<void>

    onPaymentSucceeded?: (payload: WebhookPayload) => Promise<void>

    onPaymentFailed?: (payload: WebhookPayload) => Promise<void>

    onPaymentProcessing?: (payload: WebhookPayload) => Promise<void>

    onPaymentCancelled?: (payload: WebhookPayload) => Promise<void>

    onRefundSucceeded?: (payload: WebhookPayload) => Promise<void>

    onRefundFailed?: (payload: WebhookPayload) => Promise<void>

    onDisputeOpened?: (payload: WebhookPayload) => Promise<void>

    onDisputeExpired?: (payload: WebhookPayload) => Promise<void>

    onDisputeAccepted?: (payload: WebhookPayload) => Promise<void>

    onDisputeCancelled?: (payload: WebhookPayload) => Promise<void>

    onDisputeChallenged?: (payload: WebhookPayload) => Promise<void>

    onDisputeWon?: (payload: WebhookPayload) => Promise<void>

    onDisputeLost?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionActive?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionOnHold?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionRenewed?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionPlanChanged?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionCancelled?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionFailed?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionExpired?: (payload: WebhookPayload) => Promise<void>

    onSubscriptionUpdated?: (payload: WebhookPayload) => Promise<void>

    onLicenseKeyCreated?: (payload: WebhookPayload) => Promise<void>

    onAbandonedCheckoutDetected?: (payload: WebhookPayload) => Promise<void>

    onAbandonedCheckoutRecovered?: (payload: WebhookPayload) => Promise<void>

    onDunningStarted?: (payload: WebhookPayload) => Promise<void>

    onDunningRecovered?: (payload: WebhookPayload) => Promise<void>

    onCreditAdded?: (payload: WebhookPayload) => Promise<void>

    onCreditDeducted?: (payload: WebhookPayload) => Promise<void>

    onCreditExpired?: (payload: WebhookPayload) => Promise<void>

    onCreditRolledOver?: (payload: WebhookPayload) => Promise<void>

    onCreditRolloverForfeited?: (payload: WebhookPayload) => Promise<void>

    onCreditOverageCharged?: (payload: WebhookPayload) => Promise<void>

    onCreditManualAdjustment?: (payload: WebhookPayload) => Promise<void>

    onCreditBalanceLow?: (payload: WebhookPayload) => Promise<void>

    Environment Variable Setup:

To ensure the adapter functions correctly, you will need to manually set up the following environment variables in your SvelteKit project's deployment environment (e.g., Vercel, Netlify, AWS, etc.):

    DODO_PAYMENTS_API_KEY: Your Dodo Payments API Key (required for Checkout and Customer Portal).

    RETURN_URL: (Optional) The URL to redirect to after a successful checkout (for Checkout handler).

    DODO_PAYMENTS_WEBHOOK_SECRET: Your Dodo Payments Webhook Secret (required for Webhook handler).

Example .env file:

DODO_PAYMENTS_API_KEY=your-api-key
DODO_PAYMENTS_WEBHOOK_KEY=your-webhook-secret
DODO_PAYMENTS_RETURN_URL=your-return-url
DODO_PAYMENTS_ENVIRONMENT="test_mode" or "live_mode"

Usage in your code:

bearerToken: process.env.DODO_PAYMENTS_API_KEY
webhookKey: process.env.DODO_PAYMENTS_WEBHOOK_KEY

Important: Never commit sensitive environment variables directly into your version control. Use environment variables for all sensitive information.

If the user needs assistance setting up environment variables for their specific deployment environment, ask them what platform they are using (e.g., Vercel, Netlify, AWS, etc.), and provide guidance. You can also add comments to their PR or chat depending on the context

```