Ethers.js is a JavaScript framework to interact with EVM smart contracts.
More information on ethers.io.
Questions tagged [ethers.js]
801 questions
8
votes
1 answer
Solidity: Testing reverted assertions with waffle + chai doesn't work
I'm testing a smart contract for an ERC721 token, that inherits from OpenZeppelin, using waffle and chai with NodeJS v14.18.0, but chai's reverted assertions don't seem to function as expected.
Dependencies:
"devDependencies": {
…
Craigson
- 131
- 2
- 8
8
votes
1 answer
Web3 signature verification is failing - ethers.js
I'm trying to create a signed message off-chain using ethers.js and verify that message on-chain using ecrecover. I'm signing the correct message from my metamask wallet, and passing the r, s, and v from that signature into ecrecover, but not…
a94
- 564
- 1
- 7
- 16
7
votes
1 answer
Invalid signature error from ethers when trying to verify a Smart Contract Wallet(account abstraction) signature
I am working on a dapp that needs to verify users' signatures. When testing with Metamask, everything is okay.
When trying to verify a signature from Ambire wallet, I get "Error: invalid signature string" from ethers.utils.verifyMessage
For example,…
whd
- 1,819
- 1
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- 52
7
votes
1 answer
How do I send transactions to RSK deployed smart contract functions via Ethers.js and Hardhat
I have followed this Hardhat tutorial and trying to test a demo smart contract on RSK regtest blockchain.
Here is the hardhat.config.js setup I am using:
require('@nomiclabs/hardhat-waffle');
module.exports = {
solidity: '0.7.3',
…
7alip
- 895
- 6
- 11
7
votes
5 answers
Error: invalid BigNumber value (argument="value", value={"value":"25000000000000000"}, code=INVALID_ARGUMENT, version=bignumber/5.5.0)
I have tried changing the values from 0.025 ether to 1 ether then also its showing the same error.
Also, I have tried with the rational number like 1/8 still not working.
LOOKED into some answers but they didn't resolve the error.
I have the same…
Megabyte
- 139
- 1
- 2
- 9
7
votes
1 answer
Check balance of ERC20 token in Hardhat using Ethers.js
I'm writing unit tests using Hardhat's mainnet fork, and for a test I want to check the owner account's initial balance of an ERC20 token, in particular DAI. Here's my test so far:
const { ethers } = require("hardhat");
describe("Simple Test",…
Jasperan
- 2,154
- 1
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- 40
7
votes
1 answer
Wallet Connect configuration with Binance smart chain not working
I'm trying to link BSC chain with wallet connect in my react DAPP.
const walletConnectProvider = await new WalletConnectProvider({
rpc: {
56: "https://bsc-dataseed.binance.org",
},
});
await walletConnectProvider.enable();
…
junaid2012
- 121
- 2
- 4
7
votes
2 answers
Solidity - Why default getter of a public Struct variable doesn't return every variable inside Struct
I am currently learning Solidity language and I've noticed that when I'm trying to get the value of a Struct inside my JS code, Solidity returns every variable without arrays.
I have to create custom getter to access all the data inside my…
Nicolas M.
- 360
- 6
- 12
6
votes
2 answers
Nextjs 13.0.2 and Ethers why is my Provider undefined?
I'm trying to access the ethers provider like this in Nextjs 13.0.1:
import { ethers } from "ethers";
export const signMessage = () => {
const provider = new ethers.providers.Web3Provider(window.ethereum);
const signer =…
patrick
- 343
- 1
- 12
6
votes
2 answers
How to attach debugger to hardhat chai tests in Vscode and use Typescript breakpoints?
I know I can put console.logs in Chai tests and get them printed in console. However, I want to know how can I put a regular breakpoint (or debugger; statement) in Vscode, and hit it, and debug as usual with stepping, evaluation, viewing local…
Can Poyrazoğlu
- 33,241
- 48
- 191
- 389
6
votes
1 answer
How to calculate a smart contract deployment price on RSK?
Say I have an ERC20 smart contract which I'm developing and testing in Hardhat:
//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import…
Aleks Shenshin
- 2,117
- 5
- 18
6
votes
2 answers
Ethers.js gives "resolver or addr is not configured for ENS name"
I have the following code:
const ethereumProvider = ethers.getDefaultProvider(ETHEREUM_RPC);
const contract = new ethers.Contract(
CONTRACT_ADDRESS,
abi,
ethereumProvider,
);
The ethers package gives me the following error:
Error: resolver…
Drarig29
- 1,902
- 1
- 19
- 42
6
votes
2 answers
Contract event listener is not firing when running hardhat tests with ethers js
Here is a very small repo to show the issue: https://github.com/adamdry/ethers-event-issue
But I'll explain it here too. This is my contract:
//SPDX-License-Identifier: UNLICENSED;
pragma solidity 0.8.4;
contract ContractA {
event…
Force Hero
- 2,674
- 3
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- 35
6
votes
0 answers
Access ContractFactory in web3-react
I'm using web3-react@^5.0.5 to interact with web3 from my react app. I can connect to metamask just fine.
I set the library to ethers.js and connected to metmask. Connecting worked fine, but almost none of ethers.js's methods are there. For example,…
Jake
- 2,090
- 2
- 11
- 24
5
votes
2 answers
ethers web3Modal Property 'providers' does not exist on type 'typeof import(...)'
I am trying to add web3 wallet connect button onto my webpage but I am getting this error and I am not able to resolve it since a long time. It is a nextjs react application.
const InvitesPage: NextPage = () => {
let web3Modal: any;
useEffect(()…
encrypted_soul
- 51
- 1
- 5