RN 0.56.0 ANDROID crash on release mode: JSException: Can't find variable: Promise

[yiky84119]

• Review the documentation: https://facebook.github.io/react-native
• 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 10.13.5
CPU: x64 Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz
Memory: 31.50 MB / 8.00 GB
Shell: 5.3 - /bin/zsh
Binaries:
Node: 8.11.3 - /usr/local/bin/node
Yarn: 1.7.0 - /usr/local/bin/yarn
npm: 5.6.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 11.4, macOS 10.13, tvOS 11.4, watchOS 4.3
Android SDK:
Build Tools: 19.1.0, 21.1.2, 22.0.1, 23.0.1, 23.0.2, 23.0.3, 24.0.2, 25.0.0, 25.0.1, 25.0.2, 25.0.3, 26.0.1, 26.0.2, 26.0.3, 27.0.0, 27.0.2, 27.0.3
API Levels: 19, 22, 23, 24, 25, 26, 27
IDEs:
Android Studio: 3.1 AI-173.4819257
Xcode: 9.4.1/9F2000 - /usr/bin/xcodebuild
npmPackages:
react: 16.4.1 => 16.4.1
react-native: 0.56.0 => 0.56.0
npmGlobalPackages:
create-react-native-app: 1.0.0
react-native-cli: 2.0.1
react-native-git-upgrade: 0.2.7

Description

update to 0.56.0, when run android on release mode, app crash .
java.lang.RuntimeException: com.facebook.react.devsupport.JSException: Can't find variable: Promise

i just found that, if using promise outside first Component class, on release mode it crash.

// run error: Can't find variable: Promise
let test = Promise.reject(new Error('registerApp required.'));
test.then(() => {
    console.log('test');
});

type Props = {};
export default class App extends Component<Props> {
  constructor(props) {
    super(props);

      // run ok
      // let test = Promise.reject(new Error('registerApp required.'));
      // test.then(() => {
      //     console.log('test');
      // });
  }
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>Welcome to React Native!</Text>
        <Text style={styles.instructions}>To get started, edit App.js</Text>
        <Text style={styles.instructions}>{instructions}</Text>
      </View>
    );
  }
}

Reproducible Demo

https://snack.expo.io/r1tfsO2fX

[kelset]

Closing this in favour of #19827 since the conversation seems to be moving forward over there