Using eudgc with react native (BigInt problem)?

[bluepuma77]

I would like to use the eudgc library on mobile with React Native.

When I create a React Native app with eudgc integrated (example code: snack.expo.dev), I receive the error Can’t find variable: BigInt when the app is compiled.

How to reproduce: I usually just scan the "Run on your device" QR code on the Expo website from within the Android Expo app, then the compilation process is started.

During problem research I found a comment on react-native GitHub:

You are importing a package somewhere that requires BigInt as a dependency. For the most part ReactNative uses JavaScriptCore which may not have the support of BigInt.

And core-js states (all the way at the bottom):

ES BigInt can't be polyfilled since it requires changes in the behavior of operators, you could find more info here. You could try to use JSBI.

Is there a way to get eudgc to run with React Native?

[srutz]

Hi Bluepuma, this question has been asked before and I received feedback from Pietro from Italy that he solved that issue.

Maybe this was helpful

facebook/react-native#28492 (comment)

It seems like react-native doesn't support the newer ECMA features and BigInt happens to be one of them.
I haven't tried to use the lib with react-native but I will try and add some recipes/solutions in the README if I find any.

If you could share your findings, that would also be greatly welcomed. Thanks.

[alexduca]

Someone find a solution for implementing with react-native??

[srutz]

Hi Alexduca, see above. The workaround here facebook/react-native#28492 (comment) seemed to fix the issue.
Maybe newer versions of React-Native have more recent ECMA-Script support. Eventually this would also fix the issue.

[alexduca]

Hello @srutz !
I read all the topic but i didn't understand where i have to change because i didn't have a shim.js file in my project.

[alexduca]

Someone can help me please