https://github.com/ConsenSys/abi-decoder

Nodejs and Javascript library for decoding data params and events from ethereum transactions
https://github.com/ConsenSys/abi-decoder

ethereum ethereum-dapp

Last synced: about 1 month ago
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Nodejs and Javascript library for decoding data params and events from ethereum transactions

• Host: GitHub
• URL: https://github.com/ConsenSys/abi-decoder
• Owner: Consensys
• License: gpl-3.0
• Created: 2017-02-15T12:23:12.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2024-06-24T13:23:45.000Z (6 months ago)
• Last Synced: 2024-11-08T13:42:21.786Z (about 1 month ago)
• Topics: ethereum, ethereum-dapp
• Language: JavaScript
• Homepage:
• Size: 989 KB
• Stars: 640
• Watchers: 27
• Forks: 223
• Open Issues: 63
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-ethereum-analytics - Transactions decoder
• awesome-web3-tools-and-dapps - ConsenSys ABI Decoder - This tool can understand events and data parameters from Ethereum transactions. (dApps directory / ABI Tools)
• DeFi-Developer-Road-Map - ABI decoder - library for decoding data params and events from Ethereum transactions (Roadmap)

README

        
# abi-decoder

Nodejs and Javascript library for decoding data params and events from etherem transactions

# Install

```

npm install abi-decoder

bower install abi-decoder

```

# Instantiate

```js

 // Javascript

const abiDecoder = require('abi-decoder'); // NodeJS

```

# Add ABI's

Need to pass the ABI's manually to the library in order to be able to decode params later

```js

const testABI = [{"inputs": [{"type": "address", "name": ""}], "constant": true, "name": "isInstantiation", "payable": false, "outputs": [{"type": "bool", "name": ""}], "type": "function"}, {"inputs": [{"type": "address[]", "name": "_owners"}, {"type": "uint256", "name": "_required"}, {"type": "uint256", "name": "_dailyLimit"}], "constant": false, "name": "create", "payable": false, "outputs": [{"type": "address", "name": "wallet"}], "type": "function"}, {"inputs": [{"type": "address", "name": ""}, {"type": "uint256", "name": ""}], "constant": true, "name": "instantiations", "payable": false, "outputs": [{"type": "address", "name": ""}], "type": "function"}, {"inputs": [{"type": "address", "name": "creator"}], "constant": true, "name": "getInstantiationCount", "payable": false, "outputs": [{"type": "uint256", "name": ""}], "type": "function"}, {"inputs": [{"indexed": false, "type": "address", "name": "sender"}, {"indexed": false, "type": "address", "name": "instantiation"}], "type": "event", "name": "ContractInstantiation", "anonymous": false}];

abiDecoder.addABI(testABI);

```

# Decode Tx data

```js

const testData = "0x53d9d9100000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000000000a6d9c5f7d4de3cef51ad3b7235d79ccc95114de5000000000000000000000000a6d9c5f7d4de3cef51ad3b7235d79ccc95114daa";

const decodedData = abiDecoder.decodeMethod(testData);

```

# Decode Logs from Tx Receipt

```js

web3.eth.getTransactionReceipt("0x9199e262aaab0a6ec99558b3e9f42397c07a2bb9c6befb637643aebfb03cc32a", function(e, receipt) {

  const decodedLogs = abiDecoder.decodeLogs(receipt.logs);

});

```