react native not support fetch data from provider(v5.0.8)

[282931]

It shows the error:
Error: missing response (requestBody=null, requestMethod="GET", serverError={}, url="https://api-kovan.etherscan.io/api?module=account&action=balance&address=0xD0FB2864a573F4a828cdc3971450Ae164182965d&tag=latest&apikey=46PPUBQYXPJBCX4I3E4JEVU9WYJN9F5XEM", code=SERVER_ERROR, version=web/5.0.3)

I tried to use 4.0.47 the response looks fine

[282931]

Looks like in this file packages/web/src.ts/geturl.ts, http and https module only works in node

[ricmoo]

@282931 that means your bundler is picking up the nodejs version, not the browser version.

Do you have a rollup config or webpack? Make sure you add "browser" to your mainFields in the config. Otherwise, if you require the ethers/dist/ethers.umd.js directly this bundling is already complete. :)

I am planning to put together a specific react/expo version at some point too, but that will be a while yet I think...

[282931]

not work
I import this module like this :

import {ethers, Wallet} from 'ethers/dist/ethers.umd.js';
const provider = new ethers.providers.EtherscanProvider(
      'kovan',
      Config.etherscan,
    );
....
provider.getGasPrice()
...

still get the same problom

[garyng2000]

@ricmoo,

I have no issue using ethers.js in expo(other than the slow decrypt geth wallet issue). In fact, ethers.js fulfill full some other dependencies I need in my app.

[282931]

@garyng2000 what ethers version you using? I try expo the same error

[garyng2000]

5.0.5, though I am not using etherscan and only standard JSONRPC provider(my own). via this

import { ethers } from 'ethers';

[282931]

check the snack I just created on expo : https://snack.expo.io/@3dtheo/ethers-provider-test

[282931]

@garyng2000 you switch to expo-web it works fine, IOS and Android shows the problem

[garyng2000]

@282931
works alright on my iPhone, though I was not using await but standard .then .catch but shouldn't make a difference

[vikil143]

I m facing the same issue in the v5 the error was
Error: could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.0.5

[lew]

Same problem here with expo 13. Aug. 2020, 11:01 von notifications@github.com:

…

I m facing the same issue in the v5 the error was > Error: could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.0.5 — You are receiving this because you are subscribed to this thread. Reply to this email directly, > view it on GitHub <#993 (comment)>> , or > unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAKI7J5XKXC53ID65E37X3SAOTWHANCNFSM4PZWA33Q>> .

[ricmoo]

Hi, sorry, I was away for a bit. I'm back.

Are you still experiencing this problem?

The noNetwork error indicates that your node did not respond meaningfully to either eth_chainId or eth_networkId. What backend are you using? Are you certain it is up an running when you code runs? Is the device connected to the network? Does the device have a functioning fetch implementation?

[282931]

@ricmoo I found the problem, react-native not support Body.arrayBuffer() this method

ethers.js/packages/web/src.ts/browser-geturl.ts

Line 25 in 17fdca8

const body = await response.arrayBuffer();