feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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@andreiborza@Lms24@s1gr1d
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all \u003cpre\u003e\u003ccode\u003e blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks"); } } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); } })(); (function(){ try { var __m = "github.com"; var __re = new RegExp('^' + "github\\.com" + '
Skip to content

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Contributor

Choose a reason for hiding this comment

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Successfully merging this pull request may close these issues.

Bun projects unable to have release health

3 participants

@andreiborza@Lms24@s1gr1d
, '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

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

@Lms24Lms24 left a comment

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

@github-actions

github-actionsBot commented Jan 16, 2026

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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github-actionsBot commented Jan 16, 2026

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Labels

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Development

Successfully merging this pull request may close these issues.

Bun projects unable to have release health

3 participants

@andreiborza@Lms24@s1gr1d
, '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 \u003e 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

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
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ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Bun projects unable to have release health

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@andreiborza@Lms24@s1gr1d
, '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" + '
Skip to content

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

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github-actionsBot commented Jan 16, 2026

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Contributor

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Successfully merging this pull request may close these issues.

Bun projects unable to have release health

3 participants

@andreiborza@Lms24@s1gr1d
, '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

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

@Lms24Lms24 left a comment

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

@github-actions

github-actionsBot commented Jan 16, 2026

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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github-actionsBot commented Jan 16, 2026

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Contributor

Choose a reason for hiding this comment

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Successfully merging this pull request may close these issues.

Bun projects unable to have release health

3 participants

@andreiborza@Lms24@s1gr1d
, '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

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

Merged
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

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node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Bun projects unable to have release health

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@andreiborza@Lms24@s1gr1d
, '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); } })(); })();
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feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun - #18852

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andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration
Jan 16, 2026
Merged

feat(node-core,node,bun): Export processSessionIntegration from node-core and add it to bun#18852
andreiborza merged 4 commits into
developfrom
ab/bun-process-session-integration

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Closes: #18516

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We might need to re-export it manually from some meta framework packages if the consistent exports e2e test fails

Comment threadpackages/bun/src/sdk.ts

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix is OFF. To automatically fix reported issues with Cloud Agents, enable Autofix in the Cursor dashboard.

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Missing tests for new Bun integration feature

Low Severity · Bugbot Rules

This is a feat PR that adds processSessionIntegration to Bun's default integrations, but doesn't include any integration or E2E tests. Per the review rules file, feat PRs are expected to include at least one integration or E2E test. The existing test file packages/bun/test/init.test.ts tests integration setup patterns and could be extended to verify ProcessSession is included in the default integrations when initializing the Bun SDK.

Fix in CursorFix in Web

@github-actions

github-actionsBot commented Jan 16, 2026

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Contributor

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

ScenarioRequests/s% of BaselinePrev. Requests/sChange %
GET Baseline8,583-9,330-8%
GET With Sentry1,61119%1,710-6%
GET With Sentry (error only)5,84768%5,930-1%
POST Baseline1,164-1,204-3%
POST With Sentry56749%595-5%
POST With Sentry (error only)1,01287%1,051-4%
MYSQL Baseline3,160-3,209-2%
MYSQL With Sentry36211%482-25%
MYSQL With Sentry (error only)2,53880%2,619-3%

View base workflow run

@s1gr1ds1gr1d left a comment

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Nice, thank you!

I tested this locally and Bun now shows failure rates and crash free sessions 🎉

Image

@github-actions

github-actionsBot commented Jan 16, 2026

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.11 kB--
@sentry/browser - with treeshaking flags23.61 kB--
@sentry/browser (incl. Tracing)41.86 kB--
@sentry/browser (incl. Tracing, Profiling)46.45 kB--
@sentry/browser (incl. Tracing, Replay)80.46 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.15 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.17 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)97.36 kB--
@sentry/browser (incl. Feedback)41.83 kB--
@sentry/browser (incl. sendFeedback)29.79 kB--
@sentry/browser (incl. FeedbackAsync)34.79 kB--
@sentry/browser (incl. Metrics)26.21 kB--
@sentry/browser (incl. Logs)26.37 kB--
@sentry/browser (incl. Metrics & Logs)27.02 kB--
@sentry/react26.84 kB--
@sentry/react (incl. Tracing)44.08 kB--
@sentry/vue29.56 kB--
@sentry/vue (incl. Tracing)43.67 kB--
@sentry/svelte25.12 kB--
CDN Bundle27.61 kB--
CDN Bundle (incl. Tracing)42.59 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)43.5 kB--
CDN Bundle (incl. Tracing, Replay)79.29 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)84.71 kB--
CDN Bundle - uncompressed80.89 kB--
CDN Bundle (incl. Tracing) - uncompressed126.3 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed129.32 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed242.84 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed255.63 kB--
@sentry/nextjs (client)46.43 kB--
@sentry/sveltekit (client)42.24 kB--
@sentry/node-core51.91 kB--
@sentry/node162.16 kB--
@sentry/node - without tracing93.33 kB+0.01%+1 B 🔺
@sentry/aws-serverless108.83 kB--

View base workflow run

contextLinesIntegration(),
nodeContextIntegration(),
modulesIntegration(),
processSessionIntegration(),

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Contributor

Choose a reason for hiding this comment

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Bug: The processSessionIntegration is added to Bun's default integrations but will not work with Bun.serve() because the beforeExit event it relies on never fires.
Severity: HIGH

Suggested Fix

Conditionally exclude processSessionIntegration from the default integrations when the SDK is used in a Bun environment, or implement an alternative mechanism to end sessions that is compatible with Bun's lifecycle, such as using the bunServerIntegration to hook into the server's shutdown process.

Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: packages/bun/src/sdk.ts#L51
Potential issue: The `processSessionIntegration` is being added to the default
integrations for the Bun SDK. This integration relies on the Node.js
`process.on('beforeExit')` event to correctly terminate sessions. However, in Bun
environments using `Bun.serve()`, the `beforeExit` event is never fired. As a result,
for any Bun application utilizing the standard web server, Sentry sessions will not be
properly closed, leading to inaccurate session health and release health metrics. The
integration lacks a fallback mechanism for environments where `beforeExit` is not
supported.

Did we get this right? 👍 / 👎 to inform future reviews.

@andreiborza
andreiborza merged commit 6c655db into developJan 16, 2026
209 checks passed
@andreiborza
andreiborza deleted the ab/bun-process-session-integration branch January 16, 2026 13:16
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Successfully merging this pull request may close these issues.

Bun projects unable to have release health

3 participants

@andreiborza@Lms24@s1gr1d