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wire 2026-06-15
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SWC COMPILER BUMP LANDS ACROSS AMARO, NODE STREAM FIXES PILE UP

By RepoJournal · Filed · About Node.js · Composed from the cited sources · methodology

nodejs-github-bot watilde haramj gurgunday
4 people shipped this
nodejs-github-bot @nodejs-github-bot 1 cited watilde @watilde 1 cited haramj @haramj 1 cited gurgunday @gurgunday 1 cited

Amaro shipped SWC v1.15.41 overnight while Node's stream implementation gets surgical fixes for edge cases that broke pipeTo() transform handling.

Amaro completed its SWC update to v1.15.41 [1], which includes WASM builds [2] and corresponding chore updates [3] across the toolchain. The move is routine but worth tracking if you depend on Amaro for compilation. Over in Node core, engineers landed a critical fix for stream.pipeTo() that removes unreachable transform-writer handling [5], addressing the documented argument shape mismatch where destinations with a transform() method were being misclassified. This fix clears up issue #63683 and aligns behavior with the intended pipeTo(source, ...transforms, writer, options?) signature. The crypto subsystem is getting hardened too, with work underway to handle unhandled errors in Hash._transform [6]. Meanwhile, the event loop got a performance tweak: a new fast path in RunAndClearNativeImmediates skips V8 handle creation on every tick when the queues are empty [7], improving latency for applications with sparse immediate scheduling. Undici cleaned house by removing obsolete H2 pipelining reproducers [8], and Node's test suite expanded with three new utils method tests [4].

Action items

References

  1. [1] chore(deps): update SWC to v1.15.41 ↗ nodejs/amaro
  2. [2] chore: build wasm from swc v1.15.41 ↗ nodejs/amaro
  3. [3] chore: update swc to v1.15.41 ↗ nodejs/amaro
  4. [4] test: add tests for 3 methods in utils ↗ nodejs/node
  5. [5] stream: remove transform-writer handling in pipeTo ↗ nodejs/node
  6. [6] crypto: fix unhandled error in Hash._transform ↗ nodejs/node
  7. [7] src: fast path empty native immediate drain ↗ nodejs/node
  8. [8] chore: removed repro-h2-pipelining-default.mjs and lint (#5420) ↗ nodejs/undici

$ ls nodejs/reviews/ # the step-back reads

the week in review Node 26.9.0 ships generic crypto MAC API the month in review Node 26 line lands crypto, stream, and FFI hardening as deprecations tighten the core
Topics: JavaScript Full archive → Weekly reviews →

Quick answers

What shipped in Node.js on June 15, 2026?
Amaro shipped SWC v1.15.41 overnight while Node's stream implementation gets surgical fixes for edge cases that broke pipeTo() transform handling. In total, 10 commits and 8 pull requests landed.
Who contributed to Node.js on June 15, 2026?
4 developers shipped this update, including nodejs-github-bot, watilde, haramj, and gurgunday.
What were the notable Node.js updates?
chore(deps): update SWC to v1.15.41, chore: build wasm from swc v1.15.41, and chore: update swc to v1.15.41.
♥

$ log @nodejs --recent

SEA gets ZIP asset archives, HTTP server sheds per-request allocations 28 shipped Buffer.stringLength(), and a trace_events abort for embedders 40 shipped cpSync dereference regression fixed, trace union punning removed 39 shipped Node 26.9.0 adds a generic MAC API, undici walks back its decompression size cap 27 shipped

$ log --all # elsewhere on the wire

@openclaw Cold-start Gateway diagnostics stop crying wolf, doctor repairs plugin drift Agentic Coding Cline desktop bundles shrink, goose unblocks its own clicks

$ ls showcases/

Rails Django Laravel Go Vercel Vue.js Kubernetes HashiCorp Arch Linux Linux Anthropic OpenAI

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