@appliedblockchain/parity-revert-reason
v1.0.3
Published
Small function and tests for retrieving Solidity revert reason from require()
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Get EVM revert reason on Parity
(if stated, as in require(false, "Message")
)
web3.js
has a Debug module and debug.getTransactionTrace
but this will call a JSON-RPC API only implemented in Geth, not Parity.
For Parity, one has to call trace_rawTransaction
.
For more info: https://github.com/paritytech/parity-ethereum/issues/9887.
It should probably use RLP.decode() but can't get it to work.
Usage
const { throwWithRevertReason } = require('@appliedblockchain/parity-revert-reason')
const method = 'myMethod'
const args = []
const contract = new web3.eth.Contract(abi, address)
const txParams = {...}
const tx = await web3.eth.signTransaction(txParams)
await web3.eth.sendSignedTransaction(tx.raw).catch(async () => {
const fallbackErrMsg = `Transaction ${method}(${inspect(args)}) (nonce: ${txParams.nonce}) failed.`
await throwWithRevertReason(web3, tx.raw)
})
throwWithRevertReason(web3, rawTxHash[, fallbackMsg])
Params:
web3
Web3 instance (only tested with v1.0.0-beta.37)rawTxHash
Eithertx.raw
if usingweb3.eth.signTransaction
ortx.rawTransaction
if usingweb3.eth.accounts.signTransaction
fallbackMsg
Error message to be thrown if the trace yielded no parseable content.
Returns:
Promise<Error>
Rejected Promise with either the transaction Revert message or thefallbackMsg
.
Run the tests
docker run --rm -d -p 8545:8545 appliedblockchain/parity-solo:v4.0.0
npm test