React Native "Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist"

[hohoaisan]

Expected Behavior

No error was shown when initialize amplitude with @amplitude/analytics-react-native module in React Native

Current Behavior

The following error log was pushed into console, there is no documentation about polyfilling or disable cookies?

 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
    at apply (native)
    at apply (native)
    at App
    at doResolve (/Users/distiller/react-native/packages/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:216:25)
    at apply (native)
    at ErrorOverlay
    at RCTView
    at apply (native)
    at RCTView
    at apply (native)
    at Promise (/Users/distiller/react-native/packages/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:82:14)
    at apply (native)
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Property 'btoa' doesn't exist

Steps to Reproduce

1. Install @amplitude/analytics-react-native by using yarn expo install @amplitude/analytics-react-native
2. Import import * as amplitude from '@amplitude/analytics-react-native' in App.tsx
3. Observe the Metro console

Environment

• @amplitude/analytics-react-native version: ^1.4.9
• Installation Method: yarn
• "react-native": "0.72.6
• "expo": "^49.0.0",

[hohoaisan]

After polyfilling btoa, following error log:

 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
    at apply (native)
    at apply (native)
    at App
    at doResolve (/Users/distiller/react-native/packages/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:216:25)
    at apply (native)
    at ErrorOverlay
    at RCTView
    at apply (native)
    at RCTView
    at apply (native)
    at Promise (/Users/distiller/react-native/packages/react-native/sdks/hermes/build_iphoneos/lib/InternalBytecode/InternalBytecode.js:82:14)
    at apply (native)
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined
 ERROR  Amplitude Logger [Error]: Failed to set cookie for key: AMP_TEST. Error: Cannot set property 'cookie' of undefined

[yuhao900914]

Thanks for choosing amplitude.
Did you also install the async storage at the same time?

# npm
npm install @amplitude/analytics-react-native
npm install @react-native-async-storage/async-storage

# yarn
yarn add @amplitude/analytics-react-native
yarn add @react-native-async-storage/async-storage

This is the instruction on how to use amplitude. There is more for the developer doc.