[0.57] - NetInfo methods fail to resolve or reject

[GregoryCollett]

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• Search for existing issues: https://github.com/facebook/react-native/issues
• Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

React Native Environment Info:
System:
OS: macOS High Sierra 10.13.6
CPU: x64 Intel(R) Core(TM) i7-4980HQ CPU @ 2.80GHz
Memory: 1.94 GB / 16.00 GB
Shell: 5.3 - /bin/zsh
Binaries:
Node: 11.0.0 - /usr/local/bin/node
Yarn: 1.9.2 - ~/.yarn/bin/yarn
npm: 6.4.1 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.0, macOS 10.14, tvOS 12.0, watchOS 5.0
IDEs:
Android Studio: 3.1 AI-173.4819257
Xcode: 10.0/10A255 - /usr/bin/xcodebuild
npmPackages:
react: 16.6.0 => 16.6.0
react-native: 0.57.3 => 0.57.3

Description

NetInfo.getConnectionInfo() & NetInfo.isConnected.fetch() fail to resolve or reject

Reproducible Demo

Able to reproduce this in the simplest of scenarios running on an iOS simulator in debug js mode (android untested)
NetInfo.getConnectionInfo().then(console.log).catch(console.log) <- neither log occurs

[JumalDB]

We have similar issue
#21862

[GregoryCollett]

Seem's this is working in 0.57.4 patch.

Edit: seems I was wrong... worked a few times but not consistently. Continues to fail in 0.57.5

[AbigailMcP]

I'm experiencing the same issue in 0.57.7 -NetInfo.isConnected.fetch() only very occasionally resolves.

I've just had to downgrade to 0.56 to fix.

[benjarwar]

Experiencing similar issues with NetInfo.isConnected.addEventListener in 0.57.8.

[juanfer0002]

Just to add. This is a problem that only occurs in iOS, it's working fine in Android.

A snippet like this would never print 'After isConnected':

static async checkConnection() {
    console.log('Before isConnected');
    let isConnected = await NetInfo.isConnected.fetch();
    console.log('After isConnected', isConnected);
}