Blockchain ❤️'s WASM: Chapter Arbitrum
Too Long; Didn't ReadArbitrum recently launched Stylus, its WebAssembly (WASM)-based smart contract VM. This brings several benefits like expanded language support, lower costs, customizable precompilers, and interoperability with EVM.
WASM is gaining popularity for its performance, compact size, portability, and language support. Other chains like Polkadot and Cosmos also use it.
EVM-WASM interoperability is quite comprehensive. Custom precompiles aren't implemented yet. Reentrancy is optional but disabled by default.
Overall, WASM provides a performance boost for Arbitrum against zk-rollups. But EVM remains foundational, with WASM as an "EVM+" supplement for now.