TypeError when creating new CognitoIdentityClient

[jzybert]

Describe the bug

I am trying to create an S3Client object in my NodeJS service that will use credentials from my Cognito Identity Pool. I've followed the tutorial here: https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/loading-browser-credentials-cognito.html. However, when I run that code, I see TypeError: Object(...) is not a function.

It comes from the new CognitoIdentityClient({region: REGION}) line.

The stack trace:

TypeError: Object(...) is not a function
    at defaultProvider (...)
    at Object.credentialDefaultProvider (...)
    at resolveAwsAuthConfig (...)
    at new CognitoIdentityClient (...)

Your environment

macOS Catalina v10.15.7, MacBook Pro (16-inch, 2019)

Running this inside the WebStorm IDE from JetBrains.

SDK version number

"@aws-sdk/client-cognito-identity": "^3.20.0",
"@aws-sdk/client-s3": "^3.20.0",
"@aws-sdk/credential-provider-cognito-identity": "^3.20.0",

Is the issue in the browser/Node.js/ReactNative?

Node.js

Details of the browser/Node.js/ReactNative version

Paste output of npx envinfo --browsers or node -v or react-native -v

node -v
v12.19.1

Steps to reproduce

const {S3Client} = require("@aws-sdk/client-s3");
const {CognitoIdentityClient} = require("@aws-sdk/client-cognito-identity");
const {fromCognitoIdentityPool} = require("@aws-sdk/credential-provider-cognito-identity");

// AWS Constants
const REGION = 'us-east-1';
const IDENTITY_POOL_ID = 'IDENTITY_POOL_ID'; // removing actual ID
const USER_POOL_ID = 'USER_POOL_ID'; //removing actual ID
const COGNITO_ID = `cognito-idp.${REGION}.amazonaws.com/${USER_POOL_ID}`;

export async function listS3Files(token) {
    try {
        const loginData = {
            [COGNITO_ID]: token
        };
        const s3Client = new S3Client({
            region: REGION,
            credentials: fromCognitoIdentityPool({
                client: new CognitoIdentityClient({region: REGION}),
                identityPoolId: IDENTITY_POOL_ID,
                logins: {
                    ...loginData
                }
            })
        });
    } catch (error) {
        console.log(error);
        throw error;
    }
}

Observed behavior

Trying to create an S3Client using the v3 tutorial results in a TypeError being thrown when the CognitoIdentityClient is created.

Expected behavior

No TypeError should be thrown. I should be able to create the S3Client with no issues.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.

[AllanZhengYP]

Hi @jzybert

I cannot reproduce the issue, can you point out which line in source code is throwing the error? It'll be the helpful for us if you can create a reproduction repo so we can reproduce the issue from clean slate.

[AllanZhengYP]

Per offline discussion, this issue is dupilcated to #2587. I will close this report and track the issue on the other ticket.

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