Expo app renders “Unhandled JS Exception: undefined is not a function (near ‘…babelHelpers.asyncToGenerator…’)” message when I try to launch my standalone app published by “exp publish”.
I can launch my app on local with “exp start -c --minify --no-dev” command.
What’s the problem on my app?
It’s hard to tell. Is that all of the error you’re seeing? Can you share the app?
Yes that’s all I can see.
It’s a screenshot of my app right after execution via published url.
Should I add more plugin to .babelrc?
I didn’t add anything more since initializing the project.
Without a code example it will be near impossible for us to help you debug this @devit.
If you are uncomfortable with sharing those things, it might be useful for you to share your SDK version and your dependencies.
Thank you for your reply,
"sdkVersion": "26.0.0",
This is the sdkVersion written in my app.json and below is my dependency in package.json
“dependencies”: {
“babel-preset-es2017”: “^6.24.1”,
“babel-preset-react-native”: “^4.0.0”,
“expo”: “26.0.0”,
“humps”: “^2.0.1”,
“lodash”: “^4.17.5”,
“moment”: “^2.22.1”,
“native-base”: “^2.4.1”,
“prop-types”: “^15.6.1”,
“react”: “16.3.0”,
“react-native”: “0.54.2”,
“react-native-is-iphonex”: “^1.0.1”,
“react-native-render-html”: “^3.9.3”,
“react-native-router-flux”: “^4.0.0-beta.28”
}
Oh, finally I got succeeded to launch my app!
Seemingly the issue was caused by wrong declaration of some babel plugin dependency.
I moved the dependencies from devDependencies to dependencies in package.json and the issue got resolved.
Thanks for your reply and mention of my dependencies 
Thank you for using Expo! I’m glad you were able to figure this all out on your own, pretty smart
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