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Title: stream: rewrite WHATWG Stream in C++ by mcollina · Pull Request #63872 · nodejs/node · GitHub

Open Graph Title: stream: rewrite WHATWG Stream in C++ by mcollina · Pull Request #63872 · nodejs/node

X Title: stream: rewrite WHATWG Stream in C++ by mcollina · Pull Request #63872 · nodejs/node

Description: Node.js JavaScript runtime ✨🐢🚀✨. Contribute to nodejs/node development by creating an account on GitHub.

Open Graph Description: This PR is an experiment to see if moving WHATWG Stream to C++ is viable. This was done by a combination of Claude Opus 4.8 and Fable 5. I will add a full review guide later on. This is not ready f...

X Description: This PR is an experiment to see if moving WHATWG Stream to C++ is viable. This was done by a combination of Claude Opus 4.8 and Fable 5. I will add a full review guide later on. This is not ready f...

Opengraph URL: https://github.com/nodejs/node/pull/63872

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Commits45 (45)https://github.com/nodejs/node/pull/63872/commits
Checkshttps://github.com/nodejs/node/pull/63872/checks
Files changedhttps://github.com/nodejs/node/pull/63872/files
stream: rewrite WHATWG Stream in C++https://github.com/nodejs/node/pull/63872#top
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Jun 12, 2026https://github.com/nodejs/node/pull/63872#issue-4648291195
Please reload this pagehttps://github.com/nodejs/node/pull/63872
Please reload this pagehttps://github.com/nodejs/node/pull/63872
mcollinahttps://github.com/mcollina
June 8, 2026 20:00https://github.com/nodejs/node/pull/63872#commits-pushed-5985bcc
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src: add C++ webstreams binding + ReadableStream default object modelhttps://github.com/nodejs/node/pull/63872/commits/5985bcc8a3cababd88a59a78569576ba9614214f
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stream: replace eagerly-allocating deques with a lazy FIFO queuehttps://github.com/nodejs/node/pull/63872/commits/17dce4cfae779f6558b8cf582a9058bb71d2369a
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stream: skip start plumbing for startless TransformStreamshttps://github.com/nodejs/node/pull/63872/commits/43c7d8586292d6b217c2505c699d7c4e1f495f18
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