feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086

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feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.

Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277

The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.

This problem has been discussed on React Router:

While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.

The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.

This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.

It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:

Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.

Closes#19090 (added automatically)

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size-limit report 📦

PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--

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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts Outdated
Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts Outdated
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%

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Comment threadpackages/react/src/reactrouter-compat-utils/utils.ts
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?

@onurtemizkan

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Are there any plans from RR of moving this to the library eventually?

As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.

@onurtemizkan
onurtemizkanforce-pushed the onur/react-router-lazy-manifest-option branch from a9a9858 to fad4b93CompareFebruary 10, 2026 12:42
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts Outdated
if (pathSegments.length < patternSegmentsWithoutWildcard) {
return false;
}
for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {

@s1gr1ds1gr1dFeb 10, 2026

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L: you could use a forof here and below

@onurtemizkanonurtemizkanFeb 10, 2026

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Updated 👍

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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts Outdated
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
@onurtemizkan
onurtemizkanforce-pushed the onur/react-router-lazy-manifest-option branch from 05ea60d to dbf6602CompareFebruary 10, 2026 18:43
@onurtemizkan
onurtemizkan merged commit df43cac into developFeb 10, 2026
103 checks passed
@onurtemizkan
onurtemizkan deleted the onur/react-router-lazy-manifest-option branch February 10, 2026 19:06
@onurtemizkanonurtemizkan mentioned this pull request Feb 16, 2026
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s1gr1d pushed a commit to getsentry/sentry-docs that referenced this pull request Feb 23, 2026
@onurtemizkan
DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
@onurtemizkanonurtemizkan mentioned this pull request Feb 23, 2026
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feat(react): Add lazyRouteManifest option to resolve lazy-route names

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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
feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
Merged
onurtemizkan merged 6 commits into
developfrom 
onur/react-router-lazy-manifest-option
Feb 10, 2026
Merged
feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
developfrom 
onur/react-router-lazy-manifest-option
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@onurtemizkanonurtemizkan
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Jan 29, 2026•

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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
Outdated

 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
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L: you could use a forof here and below
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Updated 👍
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


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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
feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
Outdated

 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
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L: you could use a forof here and below
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Updated 👍
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


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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
feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
Merged
onurtemizkan merged 6 commits into
developfrom 
onur/react-router-lazy-manifest-option
Feb 10, 2026
Merged
feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
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@onurtemizkanonurtemizkan
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Jan 29, 2026•

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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
View base workflow run
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
@onurtemizkan
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
Outdated

 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
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L: you could use a forof here and below
@onurtemizkanonurtemizkanFeb 10, 2026

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Updated 👍
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Cursor Bugbot has reviewed your changes and found 1 potential issue.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


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@onurtemizkan@chargome@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" + '

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feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
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onurtemizkan merged 6 commits into
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onur/react-router-lazy-manifest-option
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feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
View base workflow run
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
@onurtemizkan
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
Outdated

 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
@s1gr1ds1gr1dFeb 10, 2026

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L: you could use a forof here and below
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Updated 👍
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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/react/src/reactrouter-compat-utils/route-manifest.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.
Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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Feb 23, 2026
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


3 participants

@onurtemizkan@chargome@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(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
Merged
onurtemizkan merged 6 commits into
developfrom 
onur/react-router-lazy-manifest-option
Feb 10, 2026
Merged
feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
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@onurtemizkanonurtemizkan
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Jan 29, 2026•

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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
View base workflow run
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
@onurtemizkan
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
@onurtemizkan
onurtemizkanforce-pushed
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
Outdated

 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
@s1gr1ds1gr1dFeb 10, 2026

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L: you could use a forof here and below
@onurtemizkanonurtemizkanFeb 10, 2026

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Updated 👍
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
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Documents: getsentry/sentry-javascript#19086
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, '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('^' + ".*" + '

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feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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Comment threadpackages/react/src/reactrouter-compat-utils/utils.ts
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
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L: you could use a forof here and below
@onurtemizkanonurtemizkanFeb 10, 2026

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Updated 👍
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


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, '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
feat(react): Add lazyRouteManifest option to resolve lazy-route names - #19086
Merged
onurtemizkan merged 6 commits into
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onur/react-router-lazy-manifest-option
Feb 10, 2026
Merged
feat(react): Add lazyRouteManifest option to resolve lazy-route names#19086
onurtemizkan merged 6 commits into
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This PR will resolve the core reason for the series of fixes / handling for automatic lazy-route resolution for a while.
Related: #18898, #18881, #18346, #18155, #18098, #17962, #17867, #17438, #17277
The core issue we have been trying to tackle is not having access to the complete route hierarchy when asynchronously loaded lazy routes are used. React Router provides a route manifest that we can use while matching parameterized transaction names with routes in all cases except this lazy-routes pattern.
This problem has been discussed on React Router:
While this has been addressed for Remix / React Router (Framework Mode), it's still not available in Library Mode. The manifest contains the lazily-loaded route, only when it's navigated to. While waiting for navigation, our transactions can be dropped for several reasons, such as user behaviour like switching tabs (document.hidden guard), hitting timeouts like idleTimeout, and potentially other reasons. This results in incomplete transaction naming with leftover wildcards, which caused broken aggregation on the Sentry dashboard.
The series of attempts to fix this while keeping automatic route discovery has been prone to race conditions and required special-case handling of each edge case scenario, also requiring a considerable amount of internal logic, affecting our readability and performance. At the end, all failed in giving completely robust and deterministic results on the customers' side.
This PR proposes a new option: lazyRouteManifest specifically for lazy routes. This will let us have initial information about the route hierarchy. So we can assign correct parameterized transaction names without needing to wait for navigated state.
It's a static array of routes in parameterized format (needs to be maintained by the users on route hierarchy updates) like:
Sentry.reactRouterV7BrowserTracingIntegration({// ...enableAsyncRouteHandlers: truelazyRouteManifest: ['/','/pricing','/features','/login','/signup','/forgot-password','/reset-password/:token','/org/:orgSlug','/org/:orgSlug/dashboard','/org/:orgSlug/projects','/org/:orgSlug/projects/:projectId','/org/:orgSlug/projects/:projectId/settings','/org/:orgSlug/projects/:projectId/issues','/org/:orgSlug/projects/:projectId/issues/:issueId','/org/:orgSlug/team','/org/:orgSlug/team/:memberId','/org/:orgSlug/settings','/org/:orgSlug/billing','/admin','/admin/users','/admin/users/:userId','/admin/orgs','/admin/orgs/:orgId',],})
  • This will only be active when enableAsyncRouteHandlers is set to true
  • To match URLs with given routes, we mimic React Router's own implementation.
  • When this is not provided or fails, it falls back to the current behaviour
  • This manifest is primarily for lazy routes, but the users can also add their non-lazy routes here for convenience or consistency.
  • Also added E2E tests that will fail when (if at some point) React Router manifests include the lazy routes before navigation, so we'll be aware and plan depending on that manifest instead.
  • We can do a cleanup for the race-condition / edge-case handling part of the code in a follow-up PR.
Closes#19090 (added automatically)
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size-limit report 📦
PathSize% ChangeChange
@sentry/browser25.56 kB--
@sentry/browser - with treeshaking flags24.08 kB--
@sentry/browser (incl. Tracing)42.36 kB--
@sentry/browser (incl. Tracing, Profiling)47.03 kB--
@sentry/browser (incl. Tracing, Replay)81.18 kB--
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags70.8 kB--
@sentry/browser (incl. Tracing, Replay with Canvas)85.87 kB--
@sentry/browser (incl. Tracing, Replay, Feedback)98.03 kB--
@sentry/browser (incl. Feedback)42.29 kB--
@sentry/browser (incl. sendFeedback)30.23 kB--
@sentry/browser (incl. FeedbackAsync)35.22 kB--
@sentry/browser (incl. Metrics)26.74 kB--
@sentry/browser (incl. Logs)26.88 kB--
@sentry/browser (incl. Metrics & Logs)27.56 kB--
@sentry/react27.33 kB--
@sentry/react (incl. Tracing)44.72 kB+0.04%+14 B 🔺
@sentry/vue30.01 kB--
@sentry/vue (incl. Tracing)44.21 kB--
@sentry/svelte25.58 kB--
CDN Bundle28.11 kB--
CDN Bundle (incl. Tracing)43.2 kB--
CDN Bundle (incl. Logs, Metrics)28.95 kB--
CDN Bundle (incl. Tracing, Logs, Metrics)44.03 kB--
CDN Bundle (incl. Replay, Logs, Metrics)68.02 kB--
CDN Bundle (incl. Tracing, Replay)80.07 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)80.94 kB--
CDN Bundle (incl. Tracing, Replay, Feedback)85.5 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)86.4 kB--
CDN Bundle - uncompressed82.22 kB--
CDN Bundle (incl. Tracing) - uncompressed127.93 kB--
CDN Bundle (incl. Logs, Metrics) - uncompressed85.05 kB--
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed130.76 kB--
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed208.71 kB--
CDN Bundle (incl. Tracing, Replay) - uncompressed244.81 kB--
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed247.63 kB--
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed257.61 kB--
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed260.42 kB--
@sentry/nextjs (client)47.04 kB--
@sentry/sveltekit (client)42.81 kB--
@sentry/node-core52.17 kB--
@sentry/node166.52 kB+0.01%+1 B 🔺
@sentry/node - without tracing93.96 kB--
@sentry/aws-serverless109.45 kB--
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Comment threadpackages/react/src/reactrouter-compat-utils/index.ts
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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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 Baseline8,675-8,604+1%
GET With Sentry1,69820%1,676+1%
GET With Sentry (error only)6,06270%6,060+0%
POST Baseline1,187-1,182+0%
POST With Sentry59150%576+3%
POST With Sentry (error only)1,05889%1,051+1%
MYSQL Baseline3,279-3,180+3%
MYSQL With Sentry45114%448+1%
MYSQL With Sentry (error only)2,65381%2,639+1%
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Comment threadpackages/react/src/reactrouter-compat-utils/utils.ts
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LGTM! Thanks for the detailed explanation. Are there any plans from RR of moving this to the library eventually?
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Are there any plans from RR of moving this to the library eventually?
As far as I can see from the discussions, there's no active effort to support this at the moment by the RR team. They seem mainly focused on the framework side.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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 if (pathSegments.length < patternSegmentsWithoutWildcard) {
 return false;
 }
 for (let i = 0; i < patternSegmentsWithoutWildcard; i++) {
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L: you could use a forof here and below
@onurtemizkanonurtemizkanFeb 10, 2026

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Updated 👍
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Cursor Bugbot has reviewed your changes and found 1 potential issue.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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Cursor Bugbot has reviewed your changes and found 1 potential issue.
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Comment threadpackages/react/src/reactrouter-compat-utils/route-manifest.ts
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DocumentlazyRouteManifestoption for React Router v6 and v7 (#16397)
7bd8658
Documents: getsentry/sentry-javascript#19086
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feat(react): Add lazyRouteManifest option to resolve lazy-route names


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