Hi I am new to Dfinity and building an application in expo (React native)+typescript. I am trying to do a simple call to internet identity ( https://identity.ic0.app ), but I get this error in the very first step: ReferenceError: Can’t find variable: BigInt Any ideas? Here i the code I have. ultima…

For some reason I am blocked from posting the whole solution and could not post what worked for me. So I put it here: [ github.com/functionland/photos/issues/59#issuecomment-880370283 ] From all responses here, and the helpful insights in this topic I gathered it for expo(react -native)

React Native use JScore as javascript engine. Which does not support BigInt natively

I understand. Any polyfills or workarounds that has been tested?

Actually, I think the latest iOS’s JSC has BigInt. But Android doesn’t AFAIK.

It sounds like there’s a polyfill for Android here : if (typeof BigInt === 'undefined') global.BigInt = require('big-integer')

And if it turns out that BigInt is untenable, I’m open to abstracting the codebase to a Nat64 interface that can accept implementations other than BigInt to improve compatibility

I tried this. for BigInt adding this to the top of my code does not work(At least for expo) and it still givs the same error. I had to add this to the @dfinity module files directly, which would probabely break on each update would be nice to have it added in main branch, unless there is a reason n…

I use this solution: /** * Polify BigInt.toJSON for react-native * @returns {number} */ BigInt.prototype.toJSON = function () { return Number(this.toString()); }; if (typeof BigInt === "undefined") global.BigInt = require("big-integer");

React Native (including Expo) supports BigInt now! We’re also going to be replacing the BLS verification soon, so we’ll finally have a simple React Native example ready to go

Can't find variable: BigInt in expo (React native)

Developers

jzxchiang July 5, 2021, 7:34pm 4

See my answer here: Making HTTP calls from mobile apps - #21 by jzxchiang

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Can't find variable: BigInt in expo (React native)

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