ethereumjs-tx-s
v2.1.1
Published
A simple module for creating, manipulating and signing Ethereum transactions
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SYNOPSIS
INSTALL
npm install ethereumjs-tx
USAGE
const EthereumTx = require('ethereumjs-tx').Transaction
const privateKey = Buffer.from(
'e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109',
'hex',
)
const txParams = {
nonce: '0x00',
gasPrice: '0x09184e72a000',
gasLimit: '0x2710',
to: '0x0000000000000000000000000000000000000000',
value: '0x00',
data: '0x7f7465737432000000000000000000000000000000000000000000000000000000600057',
}
// The second parameter is not necessary if these values are used
const tx = new EthereumTx(txParams, { chain: 'mainnet', hardfork: 'petersburg' })
tx.sign(privateKey)
const serializedTx = tx.serialize()
Chain and Hardfork Support
The Transaction
and FakeTransaction
constructors receives a second parameter that lets you specify the chain and hardfork
to be used. By default, mainnet
and petersburg
will be used.
There are two ways of customizing these. The first one, as shown in the previous section, is by
using an object with chain
and hardfork
names. You can see en example of this in ./examples/ropsten-tx.ts.
The second option is by passing the option common
set to an instance of ethereumjs-common' Common. This is specially useful for custom networks or chains/hardforks not yet supported by ethereumjs-common
. You can see en example of this in ./examples/custom-chain-tx.ts.
Istanbul Support
Support for reduced non-zero call data gas prices from the Istanbul
hardfork
(EIP-2028) has been added to the library
along with the v2.1.1
release.
EIP-155 support
EIP-155
replay protection is activated since the spuriousDragon
hardfork. To disable it, set the
hardfork in the Transaction
's constructor.
API
EthereumJS
See our organizational documentation for an introduction to EthereumJS
as well as information on current standards and best practices.
If you want to join for work or do improvements on the libraries have a look at our contribution guidelines.