Hardhat Decode

This is a hardhat plugin used to decode smart contract's error、event、function-data and function-result.

We also provide a website easydecode.dev for commonly use case.

1. Install

$ npm install --save-dev hardhat-decode
# or
$ yarn add --dev hardhat-decode

2. Included Commands

• Decode custom error: npx hardhat decode error --contract <contract name> <error hex string>
• Decode event: npx hardhat decode event --contract <contract name> --topics 0x...Topic1,0x...Topic2,0x...Topic3 --data 0x...Data
• Decode function data: npx hardhat decode function-data --contract <contract name> <function data hex string>
• Decode function result: npx hardhat decode function-result --contract <contract name> <function result hex string>

For example, we have an ERC20 contract in our hardhat project, named USDT and we want to decode a unknown function-data:

$ npx hardhat decode function-data --contract USDT 0x40c10f19000000000000000000000000f39fd6e51aad88f6f4ce6ab8827279cfffb922660000000000000000000000000000000000000000000000000000000000989680
mint(address,uint256)
  >>>  0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266
  >>>  10000000

3. Usage

Load plugin in Hardhat config:

require('hardhat-decode');
// or
import 'hardhat-decode';

Enjoy!

4. Version History

• v0.1.0 (2024/06/28)
  • init release