ERROR: Unhandled promise rejection: TypeError: null is not an object (evaluating 'AmplitudeReactNative.setLibraryName')

[imanuelvic]

Hi, please help!

I’ve just upgrade from Expo SDK 43 to 46, and seems like I need to use a custom development client instead of Expo Go, because of expo-analytics-amplitude will be deprecated in SDK 45. and clearly written in expo documents that expo-analytics-amplitude will be Deprecated. So I need to use the official @amplitude/react-native.

So I migrating from expo-analytics-amplitude to @amplitude/react-native migration

I code in my JavaScript project that I follow the instruction in Installation and Quick Start, and point to React Native SDK (Legacy)

This what I code:

import * as React from 'react
import { Amplitude, Identify } from '@amplitude/react-native'

const ampInstance = Amplitude.getInstance()
ampInstance.init(AMPLITUDE_API_KEY)

And unfortunately appears this error!!

[Unhandled promise rejection: TypeError: null is not an object (evaluating 'AmplitudeReactNative.setLibraryName')]

at node_modules@amplitude\react-native\src\index.ts:null in Amplitude#_setLibraryName
at node_modules@amplitude\react-native\src\index.ts:null in Amplitude#constructor
at node_modules@amplitude\react-native\src\index.ts:null in Amplitude.getInstance
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in asyncGeneratorStep
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in _next
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in Promise$argument_0
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in tryCallTwo
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in doResolve
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in Promise
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in asyncGeneratorStep
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in _next
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in Promise$argument_0
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in tryCallTwo
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in doResolve
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in Promise
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in asyncGeneratorStep
at node_modules@babel\runtime\helpers\asyncToGenerator.js:null in _next
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in tryCallOne
at node_modules\react-native\node_modules\promise\setimmediate\core.js:null in setImmediate$argument_0
at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _allocateCallback$argument_0
at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _callTimer
at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _callReactNativeMicrotasksPass
at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in callReactNativeMicrotasks
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __callReactNativeMicrotasks
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard$argument_0
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in flushedQueue

[yuhao900914]

Hi @imanuelvic, thanks for choosing amplitude.
This legacy react-native SDK dose does not support expo. Please take a step to https://www.docs.developers.amplitude.com/data/sdks/typescript-react-native/.
Thanks.

[imanuelvic]

Ahh, I see, thank youu @yuhao900914

I just found out there is another link

[imanuelvic]

Hiii @yuhao900914, I need your help

I already use https://www.docs.developers.amplitude.com/data/sdks/typescript-react-native/ as well. And It's work in my Expo Project. But... the data provided in the amplitude dashboard is incomplete and wrong Platform.

Here's the dashboard after I use it:

The platform read Web not Android...

And here's before use @amplitude/analytics-react-native
This is the right one, the User Properties is complete, what I need

Here's my code in Auth Middleware (before user login in my project)

initializeAmplitude = async () => {

init(AMPLITUDE_API_KEY, this.props.userAccountInformation.members.id.toString())
setUserId(this.props.userAccountInformation.members.id.toString())

const identifyObj = new Identify()
identifyObj.set('properties', this.props.userAccountInformation.members)
identifyObj.set('platform', Platform.OS)
identify(identifyObj)

track('Auth Middleware')
track('App Version', { version: Application.nativeApplicationVersion })

this.props.navigation.replace('MainNavigator')
return true

}

How to make the data released as complete as before... Thanks