[V6] when sending clientMetadata in singIn func its not appear in any preSignin lambda

[hodayaGruzm]

Before opening, please confirm:

• I have searched for duplicate or closed issues and discussions.
• I have read the guide for submitting bug reports.
• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

JavaScript Framework

React Native

Amplify APIs

Authentication

Amplify Version

v6

Amplify Categories

auth

Backend

None

Environment information

System:
    OS: macOS 14.7.4
    CPU: (8) arm64 Apple M1 Pro
    Memory: 69.66 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.18.2 - ~/.nvm/versions/node/v18.18.2/bin/node
    Yarn: 1.22.1 - /usr/local/bin/yarn
    npm: 9.8.1 - ~/.nvm/versions/node/v18.18.2/bin/npm
  Browsers:
    Chrome: 135.0.7049.115
    Safari: 18.3
    Safari Technology Preview: 18.2
  npmPackages:
    @aws-amplify/pubsub: ^6.1.50 => 6.1.50 
    @aws-amplify/react-native: ^1.1.5 => 1.1.5 
    @babel/core: ^7.20.0 => 7.24.7 (7.25.2)
    @babel/plugin-transform-flow-strip-types: ^7.25.7 => 7.25.7 (7.24.7)
    @babel/preset-env: ^7.20.0 => 7.24.7 
    @babel/runtime: ^7.20.0 => 7.24.7 (7.25.7, 7.25.6)
    @georstat/react-native-image-cache: ^3.1.0 => 3.1.0 
    @gorhom/bottom-sheet: ^5.0.6 => 5.0.6 
    @hookform/resolvers: ^3.9.0 => 3.9.0 
    @hookform/resolvers/ajv:  1.0.0 
    @hookform/resolvers/arktype:  2.0.0 
    @hookform/resolvers/class-validator:  1.0.0 
    @hookform/resolvers/computed-types:  1.0.0 
    @hookform/resolvers/effect-ts:  1.0.0 
    @hookform/resolvers/fluentvalidation-ts:  1.0.0 
    @hookform/resolvers/io-ts:  1.0.0 
    @hookform/resolvers/joi:  1.0.0 
    @hookform/resolvers/nope:  1.0.0 
    @hookform/resolvers/superstruct:  1.0.0 
    @hookform/resolvers/typanion:  1.0.0 
    @hookform/resolvers/typebox:  1.0.0 
    @hookform/resolvers/typeschema:  1.0.0 
    @hookform/resolvers/valibot:  1.0.0 
    @hookform/resolvers/vest:  1.0.0 
    @hookform/resolvers/vine:  1.0.0 
    @hookform/resolvers/yup:  1.0.0 
    @hookform/resolvers/zod:  1.0.0 
    @quidone/react-native-wheel-picker: ^1.3.2 => 1.3.2 
    @react-native-async-storage/async-storage: ^2.0.0 => 2.0.0 (1.24.0)
    @react-native-community/geolocation: ^3.4.0 => 3.4.0 
    @react-native-community/netinfo: ^11.4.1 => 11.4.1 
    @react-native-community/slider: ^4.5.4 => 4.5.4 
    @react-native-firebase/app: ^21.13.0 => 21.13.0 
    @react-native-firebase/messaging: ^21.13.0 => 21.13.0 
    @react-native-masked-view/masked-view: ^0.3.1 => 0.3.1 
    @react-native/babel-preset: 0.74.84 => 0.74.84 
    @react-native/eslint-config: 0.74.84 => 0.74.84 
    @react-native/metro-config: 0.74.84 => 0.74.84 
    @react-native/typescript-config: 0.74.84 => 0.74.84 
    @react-navigation/bottom-tabs: ^6.6.1 => 6.6.1 
    @react-navigation/native: ^6.1.18 => 6.1.18 
    @react-navigation/stack: ^6.4.1 => 6.4.1 
    @reduxjs/toolkit: ^2.2.7 => 2.2.7 
    @reduxjs/toolkit-query:  1.0.0 
    @reduxjs/toolkit-query-react:  1.0.0 
    @reduxjs/toolkit-react:  1.0.0 
    @sentry/react-native: ^5.33.2 => 5.33.2 
    @types/react: ^18.2.6 => 18.3.3 
    @types/react-test-renderer: ^18.0.0 => 18.3.0 
    ContextAPIMixpanel:  0.0.1 
    HelloWorld:  0.0.1 
    MixpanelDemo:  0.0.1 
    SimpleMixpanel:  0.0.1 
    aws-amplify: ^6.5.4 => 6.5.4 
    aws-amplify/adapter-core:  undefined ()
    aws-amplify/analytics:  undefined ()
    aws-amplify/analytics/kinesis:  undefined ()
    aws-amplify/analytics/kinesis-firehose:  undefined ()
    aws-amplify/analytics/personalize:  undefined ()
    aws-amplify/analytics/pinpoint:  undefined ()
    aws-amplify/api:  undefined ()
    aws-amplify/api/server:  undefined ()
    aws-amplify/auth:  undefined ()
    aws-amplify/auth/cognito:  undefined ()
    aws-amplify/auth/cognito/server:  undefined ()
    aws-amplify/auth/enable-oauth-listener:  undefined ()
    aws-amplify/auth/server:  undefined ()
    aws-amplify/data:  undefined ()
    aws-amplify/data/server:  undefined ()
    aws-amplify/datastore:  undefined ()
    aws-amplify/in-app-messaging:  undefined ()
    aws-amplify/in-app-messaging/pinpoint:  undefined ()
    aws-amplify/push-notifications:  undefined ()
    aws-amplify/push-notifications/pinpoint:  undefined ()
    aws-amplify/storage:  undefined ()
    aws-amplify/storage/s3:  undefined ()
    aws-amplify/storage/s3/server:  undefined ()
    aws-amplify/storage/server:  undefined ()
    aws-amplify/utils:  undefined ()
    axios: ^1.7.7 => 1.7.7 
    babel-jest: ^29.6.3 => 29.7.0 
    babel-plugin-module-resolver: ^5.0.2 => 5.0.2 
    benchmark-uuid:  undefined ()
    dayjs: ^1.11.13 => 1.11.13 (1.11.11)
    eslint: ^8.19.0 => 8.57.0 
    haversine-distance: ^1.2.3 => 1.2.3 
    i18next: ^23.14.0 => 23.14.0 
    jest: ^29.6.3 => 29.7.0 
    lodash: ^4.17.21 => 4.17.21 (4.17.4, 3.10.1)
    lottie-react-native: ^7.2.2 => 7.2.2 
    mixpanel-react-native: ^3.0.8 => 3.0.8 
    mixpanelexpo:  1.0.0 
    prettier: 3.3.3 => 3.3.3 
    react: 18.2.0 => 18.2.0 
    react-hook-form: ^7.53.0 => 7.53.0 
    react-i18next: ^15.0.1 => 15.0.1 
    react-native: 0.74.2 => 0.74.2 
    react-native-background-fetch: ^4.2.7 => 4.2.7 
    react-native-ble-manager: ^11.5.5 => 11.5.5 
    react-native-circular-progress-indicator: ^4.4.2 => 4.4.2 
    react-native-config: ^1.5.3 => 1.5.3 
    react-native-confirmation-code-field: ^7.4.0 => 7.4.0 
    react-native-device-info: ^14.0.1 => 14.0.1 
    react-native-file-access: ^3.1.1 => 3.1.1 
    react-native-geolocation-service: ^5.3.1 => 5.3.1 
    react-native-gesture-handler: ^2.21.2 => 2.21.2 
    react-native-get-random-values: ^1.11.0 => 1.11.0 
    react-native-gradient-texts: ^0.1.0 => 0.1.0 
    react-native-image-picker: ^8.2.0 => 8.2.0 
    react-native-linear-gradient: ^2.8.3 => 2.8.3 
    react-native-localize: ^3.2.1 => 3.2.1 
    react-native-otp-verify: ^1.1.8 => 1.1.8 
    react-native-pager-view: ^6.4.1 => 6.4.1 
    react-native-permissions: ^4.1.5 => 4.1.5 
    react-native-phone-number-input: ^2.1.0 => 2.1.0 
    react-native-raw-bottom-sheet: ^3.0.0 => 3.0.0 
    react-native-reanimated: ^3.16.7 => 3.16.7 
    react-native-responsive-fontsize: ^0.5.1 => 0.5.1 
    react-native-safe-area-context: ^4.10.9 => 4.10.9 
    react-native-screens: ^3.34.0 => 3.34.0 
    react-native-shadow-2: ^7.1.0 => 7.1.0 
    react-native-skeleton-placeholder: ^5.2.4 => 5.2.4 
    react-native-splash-screen: ^3.3.0 => 3.3.0 
    react-native-svg: ^15.8.0 => 15.8.0 (13.14.1)
    react-native-svg-transformer: ^1.5.0 => 1.5.0 
    react-native-swiper-flatlist: ^3.2.5 => 3.2.5 
    react-native-tab-view: ^3.5.2 => 3.5.2 
    react-native-ui-lib: ^7.32.0 => 7.32.0 
    react-native-version-check: ^3.4.7 => 3.4.7 
    react-native-walkthrough-tooltip: ^1.6.0 => 1.6.0 
    react-native-webview: ^13.12.5 => 13.12.5 
    react-native-wifi-reborn: ^4.13.0 => 4.13.0 
    react-redux: ^9.1.2 => 9.1.2 
    react-test-renderer: 18.2.0 => 18.2.0 
    typescript: 5.0.4 => 5.0.4 
    uilib-native:  4.3.2 
    uuid: ^10.0.0 => 10.0.0 (9.0.1, 3.1.0, 2.0.3, 3.3.2)
    yup: ^1.4.0 => 1.4.0 
  npmGlobalPackages:
    @ionic/cli: 6.20.1
    copyfiles: 2.4.1
    corepack: 0.19.0
    cpy-cli: 5.0.0
    eas-cli: 12.6.2
    npm: 9.8.1
    pm2: 5.4.2
    tree-sitter-cli: 0.23.0

Describe the bug

i use the following code to do signin:
const response = await signIn({
username: phone_number,
options: {
authFlowType: 'CUSTOM_WITHOUT_SRP',
clientMetadata: { locale: i18n.language },
},
});
but when i check in the event object under the following pre signin lambda the clientMetadata is not appear (according to the docs it should appear)
the lambda i checked:
Create auth challenge Lambda trigger
Custom SMS Sender Lambda trigger
Define auth challenge Lambda trigger

Expected behavior

the clientMetadata would appeared under event object inside the lambda

Reproduction steps

as describe above

Code Snippet

 const response = await signIn({
        username: phone_number,
        options: {
          authFlowType: 'CUSTOM_WITHOUT_SRP',
          clientMetadata: { locale: i18n.language },
        },
      });

Log output

// Put your logs below this line

aws-exports.js

No response

Manual configuration

No response

Additional configuration

No response

Mobile Device

No response

Mobile Operating System

No response

Mobile Browser

No response

Mobile Browser Version

No response

Additional information and screenshots

No response

[nadetastic]

Hi @hodayaGruzm thank you for opening this issue. It appears that you are looking to pass some clientMetadata when using the signIn operation, however according to Cognito [1], this is only possible when using the AdminCreateUser, AdminRespondToAuthChallenge, ForgotPassword or SignUp APIs. If you are trying this with sign in, it appears that this is the reason the clientMetadata doesn't show up in the pre-sign up lambda. To validate, can you try to do the same but with the signUp call?

• [1] Pre sign-up lambda trigger parameters - https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html#cognito-user-pools-lambda-trigger-syntax-pre-signup

[hodayaGruzm]

@nadetastic hmm thats weird because under amplify documentation its looks like its possible even on signin:
https://docs.amplify.aws/gen1/react-native/build-a-backend/auth/advanced-workflows/#pre-authentication-and-pre-sign-up-lambda-triggers
maybe its mistake?
i will check the signup and update you, thanks

[nadetastic]

Interesting, thanks for sharing the link to the amplify docs - I'm validating with the team and will confirm as well. Please still do let me know if the client metadata works for signUp.