fix(core): Instrument langgraph createReactAgent

[nicohrubec]

WIP - implementation still broken (not getting spans)

This is only relevant for pre v1 langgraph. Starting from v >1.0.0 createReactAgent is replaced with createAgent, which is exported from the top-level (which we already instrument).

[github-actions]

size-limit report 📦

Path	Size	% Change	Change
@sentry/browser	24.81 kB	-	-
@sentry/browser - with treeshaking flags	23.3 kB	-	-
@sentry/browser (incl. Tracing)	41.55 kB	-	-
@sentry/browser (incl. Tracing, Profiling)	46.14 kB	-	-
@sentry/browser (incl. Tracing, Replay)	79.97 kB	-	-
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	69.7 kB	-	-
@sentry/browser (incl. Tracing, Replay with Canvas)	84.64 kB	-	-
@sentry/browser (incl. Tracing, Replay, Feedback)	96.89 kB	-	-
@sentry/browser (incl. Feedback)	41.52 kB	-	-
@sentry/browser (incl. sendFeedback)	29.49 kB	-	-
@sentry/browser (incl. FeedbackAsync)	34.48 kB	-	-
@sentry/react	26.52 kB	-	-
@sentry/react (incl. Tracing)	43.75 kB	-	-
@sentry/vue	29.27 kB	-	-
@sentry/vue (incl. Tracing)	43.36 kB	-	-
@sentry/svelte	24.82 kB	-	-
CDN Bundle	27.24 kB	-	-
CDN Bundle (incl. Tracing)	42.23 kB	-	-
CDN Bundle (incl. Tracing, Replay)	78.75 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback)	84.21 kB	-	-
CDN Bundle - uncompressed	80.04 kB	-	-
CDN Bundle (incl. Tracing) - uncompressed	125.39 kB	-	-
CDN Bundle (incl. Tracing, Replay) - uncompressed	241.42 kB	-	-
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	254.18 kB	-	-
@sentry/nextjs (client)	45.97 kB	-	-
@sentry/sveltekit (client)	41.92 kB	-	-
@sentry/node-core	51.5 kB	-	-
@sentry/node	159.97 kB	+0.09%	+139 B 🔺
@sentry/node - without tracing	92.91 kB	-	-
@sentry/aws-serverless	108.44 kB	+0.01%	+1 B 🔺

View base workflow run

[github-actions]

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.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,625	-	8,679	-1%
GET With Sentry	1,729	20%	1,681	+3%
GET With Sentry (error only)	5,936	69%	6,043	-2%
POST Baseline	1,158	-	1,203	-4%
POST With Sentry	580	50%	581	-0%
POST With Sentry (error only)	1,048	91%	1,052	-0%
MYSQL Baseline	3,277	-	3,297	-1%
MYSQL With Sentry	431	13%	426	+1%
MYSQL With Sentry (error only)	2,679	82%	2,665	+1%

View base workflow run