diff --git a/src/commonMain/kotlin/com/liftric/cognito/idp/core/Payload.kt b/src/commonMain/kotlin/com/liftric/cognito/idp/core/Payload.kt
index f5be0ae..f25c3cf 100644
--- a/src/commonMain/kotlin/com/liftric/cognito/idp/core/Payload.kt
+++ b/src/commonMain/kotlin/com/liftric/cognito/idp/core/Payload.kt
@@ -4,6 +4,7 @@
 package com.liftric.cognito.idp.core
 
 import kotlinx.serialization.Serializable
+import kotlin.js.JsExport
 
 @Serializable
 internal data class SignIn(
@@ -130,6 +131,7 @@ internal data class SetUserMFAPreference(
     val SoftwareTokenMfaSettings: MfaSettings?
 )
 
+@JsExport
 @Serializable
 data class MfaSettings(
     val Enabled: Boolean,
diff --git a/src/commonMain/kotlin/com/liftric/cognito/idp/core/Response.kt b/src/commonMain/kotlin/com/liftric/cognito/idp/core/Response.kt
index 18325ce..dc17e78 100644
--- a/src/commonMain/kotlin/com/liftric/cognito/idp/core/Response.kt
+++ b/src/commonMain/kotlin/com/liftric/cognito/idp/core/Response.kt
@@ -5,6 +5,8 @@ package com.liftric.cognito.idp.core
 
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
+import kotlin.js.JsExport
+
 @Serializable
 data class RequestError(
     @SerialName("__type")
@@ -85,12 +87,14 @@ data class ForgotPasswordResponse(
     val CodeDeliveryDetails: CodeDeliveryDetails
 )
 
+@JsExport
 @Serializable
 data class AssociateSoftwareTokenResponse(
     val SecretCode: String,
     val Session: String? = null
 )
 
+@JsExport
 @Serializable
 data class VerifySoftwareTokenResponse(
     val Session: String? = null,
diff --git a/src/jsMain/kotlin/IdentityProviderJS.kt b/src/jsMain/kotlin/IdentityProviderJS.kt
index 297aafe..1e057ba 100644
--- a/src/jsMain/kotlin/IdentityProviderJS.kt
+++ b/src/jsMain/kotlin/IdentityProviderJS.kt
@@ -148,12 +148,12 @@ class IdentityProviderClientJS(region: String, clientId: String) {
 
     fun respondToAuthChallenge(
         challengeName: String,
-        challengeResponses: Map<String, String>,
+        challengeResponses: Array<MapEntry>,
         session: String
     ): Promise<SignInResponseJS> = MainScope().promise {
         provider.respondToAuthChallenge(
             challengeName,
-            challengeResponses,
+            challengeResponses.associate { it.key to it.value },
             session
         ).getOrThrow().let {
             SignInResponseJS(
@@ -196,4 +196,3 @@ private fun AuthenticationResult.toJs(): AuthenticationResultJS =
 
 private fun CodeDeliveryDetails.toJs(): CodeDeliveryDetailsJS =
     CodeDeliveryDetailsJS(AttributeName = AttributeName, DeliveryMedium = DeliveryMedium, Destination = Destination)
-