Nested React Native projects result in TypeError: undefined is not an object (evaluating self.fetch)

I’m unsure how related this is to #5667 or #3975 but I’ve been trying to figure this out for 5 hours.

Here’s the repo: https://github.com/bloveit/react-native-redux-navigation

I’m trying to create a React Native example for this module but there is an error that occurs when trying to run the example.

To reproduce:

git clone https://github.com/bloveit/react-native-redux-navigation.git
cd react-native-redux-navigation
npm i
cd examples/TabsExample
npm i
react-native run-ios

I tried to pinpoint the error to a specific package, but no luck. I also tried nesting other React Native projects but the bug didn’t happen (it seems to be an edge case).

Would greatly appreciate some insight on this bug!

Screenshot:

Thanks! 🍺

[willks]

@migueloller Hey I got it working using RN 0.33 and doing a hack - following this project:

https://github.com/johanneslumpe/react-native-browser-polyfill

Specifically, I added the following to my app.js:

global.self = global;

I added it right at the top. Now my fetches are working properly again. Seems like a dirty hack but I was a bit desperate to get it going on iOS10 and now it’s running again.

[compojoom]

Actually I had to do this:

if(typeof global.self === "undefined")
{
    global.self = global;
}

because when debuging remotely I was getting: “cannot assign to read only property ‘self’ of object '#<DedicatedWorkerGlobalScope>?”