ReferenceError: Can't find variable: BigInt in React Native 0.67.4

[iamnijat]

Description: While using the latest version of noble-curves with React Native version 0.67.4, I encountered a ReferenceError: Can't find variable: BigInt in React Native. This issue prevents my application from running properly and seems to be a compatibility issue between the two versions.

Steps to Reproduce:

1. Set up a new React Native project with version 0.67.4.
2. Install the latest version of noble-curves.

Expected behavior: The library should integrate seamlessly with React Native without causing any syntax errors.

Actual behavior: ReferenceError: Can't find variable: BigInt in React Native

Additional context:

• React Native version: 0.67.4
• noble-curves version: 1.2.0
• Node.js version: 16.14
• Operating system: MacOS

[paulmillr]

I'm not sure what your issue is. A lot of people are using react native with noble libraries. I remember it hasn't been supported in some old React Native version before, then they've added support for bigints. But if you've had noble-secp256k1 working properly before, the noble-curves should work as-is.

We don't even use bigint literals (2n instead of BigInt(2)), but I believe modern RN supports literals.

[paulmillr]

I see the bigint support was implemented in rn 0.70 https://github.com/facebook/react-native/commit/11bae63bb1f833802ec6ce01342ebdd1d61e9252. So if you've been using noble-secp256k1, i'm not sure how it ever worked.

[iamnijat]

Right, I was using noble libraries within the latest react native version successfully

But I had to downgrade version for specific project, then issue started to appear with the BigInt

Which seems react native 0.67.4 doesn't support BigInt

[paulmillr]

So this is not an issue of noble. We never supported environments which don't have bigints, since v0.1 in 2019.