ref(sveltekit): Use untrack to read route id without invalidation - #19272

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feat/sveltekit-untrack-route-id
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ref(sveltekit): Use untrack to read route id without invalidation#19272
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feat/sveltekit-untrack-route-id

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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.

Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.
If reviewers prefer a clean slate, I'm also happy to remove the fallback.

closes#9911 (at last)

@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24 changed the title feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24 changed the title feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24 changed the title feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24 self-assigned this Feb 11, 2026
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Comment threadpackages/sveltekit/src/common/utils.ts Outdated
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LGMT!

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Lms24 enabled auto-merge (squash) February 11, 2026 10:56
@Lms24
Lms24 merged commit d7df7d4 into developFeb 11, 2026
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Use new untrack utility function when available

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
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feat/sveltekit-untrack-route-id
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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
self-assigned this
Feb 11, 2026
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marked this pull request as ready for review
February 11, 2026 09:32
@Lms24
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requested review from
a team, JPeer264 and chargome
and removed request for
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Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
@Lms24
Lms24
enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
Lms24
merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
Lms24
deleted the

feat/sveltekit-untrack-route-id

branch
February 11, 2026 11:08
@github-actionsgithub-actionsBot
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Use new untrack utility function when available


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, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
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Feb 11, 2026•

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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
self-assigned this
Feb 11, 2026
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marked this pull request as ready for review
February 11, 2026 09:32
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requested review from
a team, JPeer264 and chargome
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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.
Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
@Lms24
Lms24
enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
Lms24
merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
Lms24
deleted the

feat/sveltekit-untrack-route-id

branch
February 11, 2026 11:08
@github-actionsgithub-actionsBot
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Use new untrack utility function when available


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, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
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edited

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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
self-assigned this
Feb 11, 2026
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marked this pull request as ready for review
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requested review from
a team, JPeer264 and chargome
and removed request for
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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.
Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
@Lms24
Lms24
enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
Lms24
merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
Lms24
deleted the

feat/sveltekit-untrack-route-id

branch
February 11, 2026 11:08
@github-actionsgithub-actionsBot
mentioned this pull request
Feb 16, 2026

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Use new untrack utility function when available


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, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
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Feb 11, 2026•

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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
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Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
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Use new untrack utility function when available


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, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
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feat/sveltekit-untrack-route-id
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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
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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.
Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
@Lms24
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enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
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merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
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deleted the

feat/sveltekit-untrack-route-id

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February 11, 2026 11:08
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Use new untrack utility function when available


2 participants

@Lms24@chargome

, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
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marked this pull request as ready for review
February 11, 2026 09:32
@Lms24
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requested review from
a team, JPeer264 and chargome
and removed request for
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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.
Comment threadpackages/sveltekit/src/common/utils.ts
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LGMT!
@Lms24
Lms24
enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
Lms24
merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
Lms24
deleted the

feat/sveltekit-untrack-route-id

branch
February 11, 2026 11:08
@github-actionsgithub-actionsBot
mentioned this pull request
Feb 16, 2026

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Use new untrack utility function when available


2 participants

@Lms24@chargome

, '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
ref(sveltekit): Use untrack to read route id without invalidation - #19272
Merged
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
Feb 11, 2026
Merged
ref(sveltekit): Use untrack to read route id without invalidation#19272
Lms24 merged 3 commits into
developfrom 
feat/sveltekit-untrack-route-id
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Feb 11, 2026•

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This PR refactors how we look up SvelteKit event properties. We now use SvelteKit 2's untrack utility when available to read event.route.id without triggering route invalidation in load wrappers. Previously, we relied on a hack to read the route id via Object.getOwnPropertyDescriptor, which didn't trigger the Proxy on the route object set by SvelteKit.
Technically, we don't support any Kit version anymore that doesn't include untrack. I nevertheless opted to leave the old hack in place as a fallback to ensure we don't break anything, as these invalidations are super subtle and hard to trace back to Sentry.

If reviewers prefer a clean slate, I'm also happy to remove the fallback.
closes#9911 (at last)
@Lms24@cursoragent
feat(sveltekit): use untrack when available to read route id without …
63dd634
…invalidation
Use SvelteKit 2's untrack() on LoadEvent when present to read event.route.id
without triggering route invalidation. Fall back to getOwnPropertyDescriptor
for SvelteKit 1.x compatibility.
- Add getRouteId() helper in common/utils (untrack-first, descriptor fallback)
- Refactor client and server load wrappers to use getRouteId
- Add tests for getRouteId and for untrack path in load wrappers
Fixes#9911
Co-authored-by: Cursor <cursoragent@cursor.com>
@Lms24Lms24
changed the title
feat(sveltekit): use untrack when available to read route id without invalidationfeat(sveltekit): use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): use untrack to read route id without invalidationfeat(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
changed the title
feat(sveltekit): Use untrack to read route id without invalidationref(sveltekit): Use untrack to read route id without invalidationFeb 11, 2026
@Lms24Lms24
self-assigned this
Feb 11, 2026
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marked this pull request as ready for review
February 11, 2026 09:32
@Lms24
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requested review from
a team, JPeer264 and chargome
and removed request for
a teamFebruary 11, 2026 09:32
cursor[bot]
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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.
Comment threadpackages/sveltekit/src/common/utils.ts
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chargome
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LGMT!
@Lms24
Lms24
enabled auto-merge (squash)
February 11, 2026 10:56
@Lms24
Lms24
merged commit d7df7d4
into
developFeb 11, 2026

155 checks passed

@Lms24
Lms24
deleted the

feat/sveltekit-untrack-route-id

branch
February 11, 2026 11:08
@github-actionsgithub-actionsBot
mentioned this pull request
Feb 16, 2026

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Use new untrack utility function when available


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