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.

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The Wire · Showcase

SWC COMPILER BUMP LANDS ACROSS AMARO, NODE STREAM FIXES PILE UP

By RepoJournal · Filed 06:01 UTC on June 15, 2026 · About Node.js

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

→ Review stream.pipeTo() changes if you have custom transform middleware nodejs/node [plan]
→ Watch the crypto Hash._Transform error handling PR for merge status nodejs/node [monitor]
→ Update Amaro to SWC v1.15.41 on next maintenance cycle nodejs/amaro [plan]

References

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

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.

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