Core feature work lands across Temporal, FFI, and inspector tooling
Temporal is now enabled by default when Rust/ICU prerequisites are available, with Windows build fixes and a cleaner opt-out path for unsupported configs. Node also introduced the new node:ffi core module and quickly expanded the experimental FFI surface with memory export helpers, symbol lookup from the current process image, and dedicated error codes. For debugging, node inspect gained a non-interactive --probe mode for breakpoint-driven runs and report generation.
Web platform behavior keeps moving closer to spec
Several web-facing APIs tightened argument validation and error ordering: WebCrypto now rejects invalid key usage/algorithm combinations earlier, URLPattern now follows WebIDL overload and defaulting rules more closely, Blob construction uses sequence conversion, and Web APIs broadly reject SharedArrayBuffer-backed inputs where unsupported. WebStreams also saw multiple fixes, including SharedArrayBuffer source handling, cleaner ReadableStream.from() iteration, and better propagation of nested compose errors.
Stability and correctness fixes spread through streams, fs, N-API, and the loader
The loader now throws a dedicated ERR_REQUIRE_ESM_RACE_CONDITION for async-load races, fs.read*() validates position even on zero-length reads, and spawnSync no longer does extra argument cloning. N-API gained experimental external SharedArrayBuffer support, threadsafe function abort now drains queued work before finalizing, and test runner events picked up tracing support plus a stable testId for tooling.
Platform and dependency updates round out the week
AIX and Windows build paths were cleaned up across Node, V8, and OpenSSL; bundled SQLite and Undici were upgraded; and libffi build issues were fixed to stabilize native builds. The week also included the Node 24.15.0 LTS release, which brought new CLI flags, raw key support in KeyObject, and throwIfNoEntry for fs.stat/fs.promises.stat.
Other misc changes
Docs and permissions clarifications, CI/test cleanup, minor lint/typo fixes, and a few flaky test skips and workflow updates.