Lodestar libraries

The Lodestar project is divided into TypeScript packages that can be used independently of the CLI. These packages span the breadth of the Ethereum Consensus layer, and are perfect for TypeScript developers looking to build around Ethereum.

Monorepo libraries

Several useful Ethereum consensus libraries are developed as part of the Lodestar monorepo and may be useful when used individually.

• params - Ethereum consensus constants and fork names
• types - Ethereum consensus types, TypeScript interfaces and SSZ type objects
• config - Ethereum consensus run-time network configuration
• api - Ethereum consensus REST API client
• flare - Beacon chain multi-purpose and debugging tool
• light-client - Ethereum light client
• prover - A set of tools allowing to verify EL client JSON-RPC calls

Other libraries

BLS Utilities

• bls - Ethereum Consensus BLS sign / verify / aggregate
• bls-keystore - store / retrieve a BLS secret key from an EIP-2335 JSON keystore
• bls-keygen - utility functions to generate BLS secret keys, following EIP-2333 and EIP-2334
• bls-hd-key - low level EIP-2333 and EIP-2334 functionality

Hashing

• ssz - Simple Serialize (SSZ)
• persistent-merkle-tree - binary merkle tree implemented as a persistent data structure
• as-sha256 - Small AssemblyScript implementation of SHA256

Networking

• discv5 - Discv5 protocol
• js-libp2p-gossipsub - Gossipsub protocol for js-libp2p
• js-libp2p-noise - Noise handshake for js-libp2p