🐛 App crashes after adding enableDangerousExperimentalLeanBuilds in app.json

🐛 Bug Report

package.json

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "expo": "~39.0.2",
    "expo-status-bar": "~1.0.2",
    "react": "16.13.1",
    "react-dom": "16.13.1",
    "react-native": "https://github.com/expo/react-native/archive/sdk-39.0.3.tar.gz",
    "react-native-web": "~0.13.12"
  },
  "devDependencies": {
    "@babel/core": "~7.9.0"
  },
  "private": true
}

app.json

{
  "expo": {
    "name": "my_app",
    "slug": "my_app",
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": ["**/*"],
    "android": {
      "package": "com.myapp",
      "versionCode": 1,
      "enableDangerousExperimentalLeanBuilds": true
    }
  }
}

The app works fine in development, but when I add enableDangerousExperimentalLeanBuilds in app.json file and I build the App Bundle, the application crashes after installing and opening it on my device. I thought the problem was from the splash screen package, but after spending the whole day testing. I finally could figure out the problem.

The problem happens only with the latest expo SDK 39

[shahidcodes]

@brentvatne Unfortunately for me its throwing this error after installing expo-updates and expo-splash-screen when I run expo build:android -t apk

Cannot find module 'jsonfile/utils'
Require stack:
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\configure-splash-screen\node_modules\fs-extra\lib\json\output-json.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\configure-splash-screen\node_modules\fs-extra\lib\json\index.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\configure-splash-screen\node_modules\fs-extra\lib\index.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\configure-splash-screen\build\ios\index.js- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\configure-splash-screen\build\index.js    
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config-plugins\build\android\SplashScreen.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config-plugins\build\android\index.js     
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config-plugins\build\index.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config\build\plugins\withConfigPlugins.js 
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config\build\Config.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\node_modules\@expo\config\build\index.js
- E:\projects\react-native\rnapp\node_modules\@expo\metro-config\build\ExpoMetroConfig.js
- E:\projects\react-native\rnapp\metro.config.js
- E:\projects\react-native\rnapp\node_modules\cosmiconfig\node_modules\import-fresh\index.js
- E:\projects\react-native\rnapp\node_modules\cosmiconfig\dist\loaders.js
- E:\projects\react-native\rnapp\node_modules\cosmiconfig\dist\createExplorer.js
- E:\projects\react-native\rnapp\node_modules\cosmiconfig\dist\index.js
- E:\projects\react-native\rnapp\node_modules\metro-config\src\loadConfig.js
- E:\projects\react-native\rnapp\node_modules\metro-config\src\index.js
- E:\projects\react-native\rnapp\node_modules\metro\src\commands\build.js
- E:\projects\react-native\rnapp\node_modules\metro\src\index.js
- C:\Users\shaah\AppData\Roaming\npm\pnpm-global\4\node_modules\.pnpm\@expo\dev-server@0.1.48\node_modules\@expo\dev-server\build\MetroDevServer.js
- C:\Users\shaah\AppData\Roaming\npm\pnpm-global\4\node_modules\.pnpm\@expo\xdl@59.0.14_typescript@4.1.3\node_modules\@expo\xdl\build\Project.js- C:\Users\shaah\AppData\Roaming\npm\pnpm-global\4\node_modules\.pnpm\@expo\xdl@59.0.14_typescript@4.1.3\node_modules\@expo\xdl\build\xdl.js    
- C:\Users\shaah\AppData\Roaming\npm\pnpm-global\4\node_modules\.pnpm\expo-cli@4.0.17_typescript@4.1.3\node_modules\expo-cli\build\exp.js       
- C:\Users\shaah\AppData\Roaming\npm\pnpm-global\4\node_modules\.pnpm\expo-cli@4.0.17_typescript@4.1.3\node_modules\expo-cli\bin\expo.js  

P.S. Tried install jsonfile but got new error Error: Cannot find module 'core-js/es/string/match-all'

Fixed -

• installed both expo-updates and expo-splash-screen
• reinstalled node_modules
• everything is working now

[brentvatne]

sorry, you may have to eject if you would like more control over your app size for now. we’ll look into this but it’s an experimental feature and we don’t offer any stability guarantees for it