Amplify does not expose the challenge response values for MFA selection

[mattcreaser]

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Language and Async Model

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Amplify Categories

Authentication

Gradle script dependencies

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Environment information

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Please include any relevant guides or documentation you're referencing

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Describe the bug

When multiple MFA methods (i.e. SMS + TOTP) are enabled in Cognito, Amplify will return a next sign in step of CONTINUE_SIGN_IN_WITH_MFA_SELECTION and pass back a set of allowed MFA types: allowedMFATypes: Set<MFAType>.

The intended use is that the user will chose one of these types, and then the application will call confirmSignIn(challengeResponse) to continue the sign in process.

The issue is that the value of challengeResponse that needs to be passed is one of either "SMS_MFA" or "SOFTWARE_TOKEN_MFA", and these aren't exposed anywhere in the Amplify API or documented in the public documentation (that I can find).

On Swift, these values are available by calling e.g. selectedMfaType.challengeResponse.

Reproduction steps (if applicable)

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Code Snippet

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Log output

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amplifyconfiguration.json

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GraphQL Schema

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Additional information and screenshots

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[mattcreaser]

This has been released in Amplify 2.14.10 🎉

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