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# CloudKit.CloudKitConfig

Dictionary used to configure the CloudKit environment.

```
dictionary CloudKit.CloudKitConfig {
	CloudKit.ContainerConfig[] containers;
	Object services;
};
```

## Overview

The table describes the `services` properties.

|Property        |Description                                                                                                                                                                                                    |
|----------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|`logger`        |An object with methods `info`, `log`, `warn`, and `error`. You can set this to `window.console`.                                                                                                               |
|`fetch`         |A function compatible with `window.fetch`.                                                                                                                                                                     |
|`Promise`       |An object used for deferred and asynchronous computations. To learn more, go to [Mozilla Developer Network: Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).|
|`authTokenStore`|An object with these two methods: ![](spacer) `putToken(containerIdentifier:String, authToken:String) -> void;` ![](spacer) `getToken(containerIdentifier:String) -> String;`                                  |

## Topics

### Instance Properties

[`attribute CloudKit.ContainerConfig[] containers;`](/documentation/CloudKitJS/CloudKit.CloudKitConfig/containers)

An array of dictionaries used to configure each container of type [`CloudKit.ContainerConfig`](/documentation/CloudKitJS/CloudKit.ContainerConfig).

[`attribute Object services;`](/documentation/CloudKitJS/CloudKit.CloudKitConfig/services)

Encapsulates information about services, described in the Discussion section.

---

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