Package Exports
- ethereum-tx-decoder
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Readme
CAUTION: This package is untested (for now)!
ethereum-tx-decoder
Fully decode function parameters from raw transactions!
A lightweight utility with minimal dependencies.
Find the exact function parameters that triggered an event.
Built with ethers.js by ricmoo, but externally agnostic.
Usage
npm i ethereum-tx-decoder
Decode raw transactions into an Object:
var txDecoder = require('ethereum-tx-decoder');
// transaction.raw = '0x...'
var decodedTx = txDecoder.decodeTx(transaction.raw);
// {
// nonce: Number
// gasPrice: BigNumber
// gasLimit: BigNumber
// to: string (hex)
// value: BigNumber
// data: string (hex)
// v: Number
// r: string (hex)
// s: string (hex)
// }Decode function call data into the original parameter values:
Using ethers.Contract:
// contract = new Contract(address, abi, provider)
var fnDecoder = new txDecoder.FunctionDecoder(contract.interface);OR the contract's abi:
// Internally creates an ethers.Interface object.
var fnDecoder = new txDecoder.FunctionDecoder(abi);Then:
fnDecoder.decodeFn(decoded_tx.data);
// Result {
// ...All function parameters indexed by both name and position...
// }Note: decodeFn() returns an Arrayish.
Shortcut for decoding a function from transaction:
fnDecoder.decodeFnFromTx(transaction.raw);