undefined is not an object (evaluating 'r.default')

[dubu012]

Start with debug.apk on device

"dependencies": {
"native-base": "^2.7.1",
"react": "16.4.1",
"react-native": "0.56.0",
"react-native-elements": "^0.19.1",
"react-native-snap-carousel": "^3.7.2",
"react-native-swiper": "^1.5.13",
"react-native-vector-icons": "^4.6.0",
"react-navigation": "^1.5.11"
},
"devDependencies": {
"babel-jest": "23.4.0",
"babel-preset-react-native": "5.0.2",
"jest": "23.4.1"
},
"jest": {
"preset": "react-native"
}
}

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[Anujmoglix]

I am also facing this issue. I am getting this issue when build apk from reference https://stackoverflow.com/questions/35283959/build-and-install-unsigned-apk-on-device-without-the-development-server

[Anujmoglix]

Still didn't get the solution of it, please respond.

[ashishchauhan05]

So the cause of error is just stupid.
In node_modules/react-navigation/src/navigators/DrawerNavigator.js there is imported TabRouter, which seems like component (starts with upper case), but in reality is just function, so when the code reaches const contentRouter = TabRouter(routeConfigs, tabsConfig); it throws that error because it does not resolve it as function? It does not even run it.
This is some new babel config stuff or something, which is just weird space of js for me...

So one way to fix this is to rename all TabRouter in that file to tabRouter. I hate to modify node_modules files, I bet there must be way to say to compiler (or whatever) that TabRouter as function is ok?

Its working for me.