This repository holds various protocol building blocks of the Ethereum blockchain execution layer and is managed by the Ethereum Foundation JavaScript team. There is a TypeScript implementation of the Ethereum Virtual Machine (EVM) ready to be used in Node.js or a browser environment, implementations of core structural blockchain building blocks like an Ethereum Tx, Block or Blockchain as well as a MPT (Merkle Patricia Tree) and devp2p (execution networking layer) implementation.
All libraries are bound together by the core Common library keeping track of chain specifics and hardfork changes. They are complemented by helper packages like RLP for data encoding/decoding or Util, providing helper functionalities like (byte) conversion, signatures, types and others.
Finally, the EthereumJS Execution Client (EthereumJS) has been in active development for some time now. It already serves a variety of purposes like testing, research (e.g. EIPs) and developer tooling to engage with the protocol.
Also to note: on the Ethereum Consensus side, the ChainSafe Lodestar repository complements this repository with an Ethereum Consensus Client implementation as well as various protocol implementations (like an SSZ library) developed in the context of Ethereum Consensus layer evolution.
Below you can find a list of the packages included in this repository.
The following are our currently active branches:
| Branch | Release Series | Status | Description |
|---|---|---|---|
| master | Upcoming (Autumn 2024) | Develop |
Breaking release work |
| maintenance-v8 | v7/v8 | Maintenance |
Maintenance for v8 releases (v7 also included) |
| maintenance-v6 | v6 | Maintenance |
Maintenance for v6 releases |
Breaking releases are mostly done in sync for all libraries (latest exceptions: VM v8, EVM v3), and release cycles are currently named after the @ethereumjs/vm version. In most cases PRs should be opened towards the current working branch. If there is no current working branch, please ask! 🙂
To inspect code related to a specific package version, refer to the tags.
Detailed version can be seen on Codecov.io
graph TD
vm{vm}
client{client}
ethash --> blockchain
ethash --> client
devp2p --> client
block --> client
block --> blockchain
block --> ethash
block --> vm
blockchain --> client
mpt --> client
mpt --> vm
mpt --> blockchain
mpt --> block
mpt --> statemanager
util --> common
common --> block
common --> statemanager
common --> tx
common --> blockchain
common --> vm
common --> evm
common --> client
common --> devp2p
common --> genesis
evm --> vm
evm --> client
genesis --> client
genesis --> statemanager
genesis --> mpt
tx --> block
tx --> vm
tx --> client
vm --> client
rlp --> util
statemanager --> evm
statemanager --> vm
statemanager --> client
To update the diagram above edit the README file and open a new PR with the changes.
See our monorepo documentation to get started on setting up the repository and installing dependencies. The config folder gives an overview on shared configuration and scripts between packages.
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 carry out improvements on the libraries, please review our contribution guidelines first.
Most packages are MPL-2.0 licensed, see package folder for the respective license.