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# @aws-sdk/client-cognito-identity

## Description

AWS SDK for JavaScript CognitoIdentity Client for Node.js, Browser and React Native.

<fullname>Amazon Cognito Federated Identities</fullname>

<p>Amazon Cognito Federated Identities is a web service that delivers scoped temporary
credentials to mobile devices and other untrusted environments. It uniquely identifies a
device and supplies the user with a consistent identity over the lifetime of an
application.</p>
<p>Using Amazon Cognito Federated Identities, you can enable authentication with one or
more third-party identity providers (Facebook, Google, or Login with Amazon) or an Amazon
Cognito user pool, and you can also choose to support unauthenticated access from your app.
Cognito delivers a unique identifier for each user and acts as an OpenID token provider
trusted by AWS Security Token Service (STS) to access temporary, limited-privilege AWS
credentials.</p>
<p>For a description of the authentication flow from the Amazon Cognito Developer Guide
see <a href="https://docs.aws.amazon.com/cognito/latest/developerguide/authentication-flow.html">Authentication Flow</a>.</p>
<p>For more information see <a href="https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-identity.html">Amazon Cognito Federated Identities</a>.</p>

## Installing

To install the this package, simply type add or install @aws-sdk/client-cognito-identity
using your favorite package manager:

- `npm install @aws-sdk/client-cognito-identity`
- `yarn add @aws-sdk/client-cognito-identity`
- `pnpm add @aws-sdk/client-cognito-identity`

## Getting Started

### Import

The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the `CognitoIdentityClient` and
the commands you need, for example `ListIdentityPoolsCommand`:

```js
// ES5 example
const { CognitoIdentityClient, ListIdentityPoolsCommand } = require("@aws-sdk/client-cognito-identity");
```

```ts
// ES6+ example
import { CognitoIdentityClient, ListIdentityPoolsCommand } from "@aws-sdk/client-cognito-identity";
```

### Usage

To send a request, you:

- Initiate client with configuration (e.g. credentials, region).
- Initiate command with input parameters.
- Call `send` operation on client with command object as input.
- If you are using a custom http handler, you may call `destroy()` to close open connections.

```js
// a client can be shared by different commands.
const client = new CognitoIdentityClient({ region: "REGION" });

const params = {
  /** input parameters */
};
const command = new ListIdentityPoolsCommand(params);
```

#### Async/await

We recommend using [await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await)
operator to wait for the promise returned by send operation as follows:

```js
// async/await.
try {
  const data = await client.send(command);
  // process data.
} catch (error) {
  // error handling.
} finally {
  // finally.
}
```

Async-await is clean, concise, intuitive, easy to debug and has better error handling
as compared to using Promise chains or callbacks.

#### Promises

You can also use [Promise chaining](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises#chaining)
to execute send operation.

```js
client.send(command).then(
  (data) => {
    // process data.
  },
  (error) => {
    // error handling.
  }
);
```

Promises can also be called using `.catch()` and `.finally()` as follows:

```js
client
  .send(command)
  .then((data) => {
    // process data.
  })
  .catch((error) => {
    // error handling.
  })
  .finally(() => {
    // finally.
  });
```

#### Callbacks

We do not recommend using callbacks because of [callback hell](http://callbackhell.com/),
but they are supported by the send operation.

```js
// callbacks.
client.send(command, (err, data) => {
  // process err and data.
});
```

#### v2 compatible style

The client can also send requests using v2 compatible style.
However, it results in a bigger bundle size and may be dropped in next major version. More details in the blog post
on [modular packages in AWS SDK for JavaScript](https://aws.amazon.com/blogs/developer/modular-packages-in-aws-sdk-for-javascript/)

```ts
import * as AWS from "@aws-sdk/client-cognito-identity";
const client = new AWS.CognitoIdentity({ region: "REGION" });

// async/await.
try {
  const data = await client.listIdentityPools(params);
  // process data.
} catch (error) {
  // error handling.
}

// Promises.
client
  .listIdentityPools(params)
  .then((data) => {
    // process data.
  })
  .catch((error) => {
    // error handling.
  });

// callbacks.
client.listIdentityPools(params, (err, data) => {
  // process err and data.
});
```

### Troubleshooting

When the service returns an exception, the error will include the exception information,
as well as response metadata (e.g. request id).

```js
try {
  const data = await client.send(command);
  // process data.
} catch (error) {
  const { requestId, cfId, extendedRequestId } = error.$metadata;
  console.log({ requestId, cfId, extendedRequestId });
  /**
   * The keys within exceptions are also parsed.
   * You can access them by specifying exception names:
   * if (error.name === 'SomeServiceException') {
   *     const value = error.specialKeyInException;
   * }
   */
}
```

## Getting Help

Please use these community resources for getting help.
We use the GitHub issues for tracking bugs and feature requests, but have limited bandwidth to address them.

- Visit [Developer Guide](https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/welcome.html)
  or [API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/index.html).
- Check out the blog posts tagged with [`aws-sdk-js`](https://aws.amazon.com/blogs/developer/tag/aws-sdk-js/)
  on AWS Developer Blog.
- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/aws-sdk-js) and tag it with `aws-sdk-js`.
- Join the AWS JavaScript community on [gitter](https://gitter.im/aws/aws-sdk-js-v3).
- If it turns out that you may have found a bug, please [open an issue](https://github.com/aws/aws-sdk-js-v3/issues/new/choose).

To test your universal JavaScript code in Node.js, browser and react-native environments,
visit our [code samples repo](https://github.com/aws-samples/aws-sdk-js-tests).

## Contributing

This client code is generated automatically. Any modifications will be overwritten the next time the `@aws-sdk/client-cognito-identity` package is updated.
To contribute to client you can check our [generate clients scripts](https://github.com/aws/aws-sdk-js-v3/tree/main/scripts/generate-clients).

## License

This SDK is distributed under the
[Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0),
see LICENSE for more information.

## Client Commands (Operations List)

<details>
<summary>
CreateIdentityPool
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/CreateIdentityPoolCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/CreateIdentityPoolCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/CreateIdentityPoolCommandOutput/)

</details>
<details>
<summary>
DeleteIdentities
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/DeleteIdentitiesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DeleteIdentitiesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DeleteIdentitiesCommandOutput/)

</details>
<details>
<summary>
DeleteIdentityPool
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/DeleteIdentityPoolCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DeleteIdentityPoolCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DeleteIdentityPoolCommandOutput/)

</details>
<details>
<summary>
DescribeIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/DescribeIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DescribeIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DescribeIdentityCommandOutput/)

</details>
<details>
<summary>
DescribeIdentityPool
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/DescribeIdentityPoolCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DescribeIdentityPoolCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/DescribeIdentityPoolCommandOutput/)

</details>
<details>
<summary>
GetCredentialsForIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetCredentialsForIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetCredentialsForIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetCredentialsForIdentityCommandOutput/)

</details>
<details>
<summary>
GetId
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetIdCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetIdCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetIdCommandOutput/)

</details>
<details>
<summary>
GetIdentityPoolRoles
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetIdentityPoolRolesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetIdentityPoolRolesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetIdentityPoolRolesCommandOutput/)

</details>
<details>
<summary>
GetOpenIdToken
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetOpenIdTokenCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetOpenIdTokenCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetOpenIdTokenCommandOutput/)

</details>
<details>
<summary>
GetOpenIdTokenForDeveloperIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetOpenIdTokenForDeveloperIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetOpenIdTokenForDeveloperIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetOpenIdTokenForDeveloperIdentityCommandOutput/)

</details>
<details>
<summary>
GetPrincipalTagAttributeMap
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/GetPrincipalTagAttributeMapCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetPrincipalTagAttributeMapCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/GetPrincipalTagAttributeMapCommandOutput/)

</details>
<details>
<summary>
ListIdentities
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/ListIdentitiesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListIdentitiesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListIdentitiesCommandOutput/)

</details>
<details>
<summary>
ListIdentityPools
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/ListIdentityPoolsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListIdentityPoolsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListIdentityPoolsCommandOutput/)

</details>
<details>
<summary>
ListTagsForResource
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/ListTagsForResourceCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListTagsForResourceCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/ListTagsForResourceCommandOutput/)

</details>
<details>
<summary>
LookupDeveloperIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/LookupDeveloperIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/LookupDeveloperIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/LookupDeveloperIdentityCommandOutput/)

</details>
<details>
<summary>
MergeDeveloperIdentities
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/MergeDeveloperIdentitiesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/MergeDeveloperIdentitiesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/MergeDeveloperIdentitiesCommandOutput/)

</details>
<details>
<summary>
SetIdentityPoolRoles
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/SetIdentityPoolRolesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/SetIdentityPoolRolesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/SetIdentityPoolRolesCommandOutput/)

</details>
<details>
<summary>
SetPrincipalTagAttributeMap
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/SetPrincipalTagAttributeMapCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/SetPrincipalTagAttributeMapCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/SetPrincipalTagAttributeMapCommandOutput/)

</details>
<details>
<summary>
TagResource
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/TagResourceCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/TagResourceCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/TagResourceCommandOutput/)

</details>
<details>
<summary>
UnlinkDeveloperIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/UnlinkDeveloperIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UnlinkDeveloperIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UnlinkDeveloperIdentityCommandOutput/)

</details>
<details>
<summary>
UnlinkIdentity
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/UnlinkIdentityCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UnlinkIdentityCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UnlinkIdentityCommandOutput/)

</details>
<details>
<summary>
UntagResource
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/UntagResourceCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UntagResourceCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UntagResourceCommandOutput/)

</details>
<details>
<summary>
UpdateIdentityPool
</summary>

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/cognito-identity/command/UpdateIdentityPoolCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UpdateIdentityPoolCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-cognito-identity/Interface/UpdateIdentityPoolCommandOutput/)

</details>