stream: drain pending writes before broadcast end - #65334

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trivikr merged 1 commit into
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trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
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stream: drain pending writes before broadcast end#65334
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trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

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@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
20 checks passed
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

@nodejs-github-bot

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
@codecov

codecovBot commented Aug 16, 2026

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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
20 checks passed
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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Successfully merging this pull request may close these issues.

stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

@nodejs-github-bot

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
@codecov

codecovBot commented Aug 16, 2026

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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
20 checks passed
@trivikr

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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
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trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
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codecovBot commented Aug 16, 2026

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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
20 checks passed
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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Successfully merging this pull request may close these issues.

stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

@nodejs-github-bot

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
@codecov

codecovBot commented Aug 16, 2026

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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
@trivikr
trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
@trivikr
trivikr merged commit c28857e into nodejs:mainAug 23, 2026
20 checks passed
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Landed in c28857e

aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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Successfully merging this pull request may close these issues.

stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

3 participants

@trivikr@nodejs-github-bot@jasnell
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

stream: drain pending writes before broadcast end - #65334

Merged
trivikr merged 1 commit into
nodejs:mainfrom
trivikr:stream-iter-bc-end-stranding-writes-2
Aug 23, 2026
Merged

stream: drain pending writes before broadcast end#65334
trivikr merged 1 commit into
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trivikr:stream-iter-bc-end-stranding-writes-2

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Fixes: #65333

Keep processing writes that were queued before end(). Signal the broadcast end only after those writes enter the shared buffer.

Resolve end() after all consumers reach end-of-stream. This prevents backpressured writes from remaining pending forever.


Assisted-by: codex:gpt-5.6-sol

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Review requested:

  • @nodejs/streams

@nodejs-github-botnodejs-github-bot added needs-ci PRs that need a full CI run. stream Issues and PRs related to Node.js streams. labels Aug 16, 2026
@trivikrtrivikr added the request-ci Add this label to start a Jenkins CI on a PR. label Aug 16, 2026
@codecov

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Codecov Report

❌ Patch coverage is 88.04348% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.14%. Comparing base (453f47a) to head (c28857e).
⚠️ Report is 9 commits behind head on main.

Files with missing linesPatch %Lines
lib/internal/streams/iter/broadcast.js88.04%9 Missing and 2 partials ⚠️
Additional details and impacted files
@@ Coverage Diff @@## main #65334 +/- ##
=======================================
Coverage 90.14% 90.14% =======================================
Files 751 751 Lines 252709 252767 +58 Branches 47557 47588 +31 =======================================
+ Hits 227800 227861 +61 + Misses 16206 16202 -4 - Partials 8703 8704 +1 
Files with missing linesCoverage Δ
lib/internal/streams/iter/broadcast.js88.44% <88.04%> (+0.41%)⬆️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@github-actionsgithub-actionsBot removed the request-ci Add this label to start a Jenkins CI on a PR. label Aug 17, 2026
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@trivikrtrivikr added the author ready PRs with CI started, the required approvals, and no outstanding review comments. label Aug 23, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: nodejs#65334Fixes: nodejs#65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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trivikrforce-pushed the stream-iter-bc-end-stranding-writes-2 branch from 7e864ea to c28857eCompareAugust 23, 2026 20:26
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trivikr merged commit c28857e into nodejs:mainAug 23, 2026
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aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 25, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
aduh95 pushed a commit that referenced this pull request Aug 27, 2026
Keep processing writes that were queued before end(). Signal the
broadcast end only after those writes enter the shared buffer.
Resolve end() after all consumers reach end-of-stream. This prevents
backpressured writes from remaining pending forever.
Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
Assisted-by: codex:gpt-5.6-sol
PR-URL: #65334Fixes: #65333
Reviewed-By: James M Snell <jasnell@gmail.com>
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stream/iter: BroadcastWriter.end() strands backpressured writes and truncates the broadcast

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