- Upgrade to V8 14.1 adds faster JSON.stringify, built‑in Uint8Array base64/hex conversion, WebAssembly JSPI and other JIT optimizations.
- New default security model enables “allow net” permission, Web Storage by default, and exposes global ErrorEvent.
- Long‑standing APIs such as SlowBuffer, deprecated crypto options, and various Node internals are removed or marked end‑of‑life.