xchainjs: TypeScript Ethereum & Cross‑Chain SDK for Developers xchainjs: TypeScript SDK and EVM tools for Ethereum & cross‑chain development Short answer: xchainjs is a TypeScript-first, modular SDK for Ethereum/EVM development—covering RPC clients, wallet integration, ERC‑20 transfers, transaction signing, gas estimation, and cross‑chain flows. Use it when you want a typed […]