feat(core): Add enableTruncation option to LangChain integration

[andreiborza]

This PR adds an enableTruncation option to the LangChain integration that allows users to disable input message truncation. It defaults to true to preserve existing behavior.

Also fixes missing truncation for LLM string prompts in extractLLMRequestAttributes and refactors to use the shared getTruncatedJsonString/getJsonString utilities.

Closes: #20138

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Semver Impact of This PR

🟡 Minor (new features)

📋 Changelog Preview

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New Features ✨

Core

• Add enableTruncation option to LangChain integration by andreiborza in #20182

• Add enableTruncation option to OpenAI integration by andreiborza in #20167
• Export a reusable function to add tracing headers by JPeer264 in #20076

Other

• (deps) Bump defu from 6.1.4 to 6.1.6 by dependabot in #20104

Internal Changes 🔧

• (size-limit) Bump failing size limit scenario by Lms24 in #20186

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size-limit report 📦

⚠️Warning: Base artifact is not the latest one, because the latest workflow run is not done yet. This may lead to incorrect results. Try to re-run all tests to get up to date results.

Path	Size	% Change	Change
@sentry/browser	25.72 kB	+0.31%	+77 B 🔺
@sentry/browser - with treeshaking flags	24.21 kB	+0.34%	+82 B 🔺
@sentry/browser (incl. Tracing)	42.73 kB	+1.36%	+573 B 🔺
@sentry/browser (incl. Tracing, Profiling)	47.35 kB	+1.25%	+583 B 🔺
@sentry/browser (incl. Tracing, Replay)	81.54 kB	+0.75%	+600 B 🔺
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags	71.11 kB	+0.78%	+549 B 🔺
@sentry/browser (incl. Tracing, Replay with Canvas)	86.25 kB	+0.7%	+594 B 🔺
@sentry/browser (incl. Tracing, Replay, Feedback)	98.45 kB	+0.56%	+541 B 🔺
@sentry/browser (incl. Feedback)	42.51 kB	+0.21%	+87 B 🔺
@sentry/browser (incl. sendFeedback)	30.39 kB	+0.27%	+80 B 🔺
@sentry/browser (incl. FeedbackAsync)	35.38 kB	+0.24%	+82 B 🔺
@sentry/browser (incl. Metrics)	27.04 kB	+0.31%	+83 B 🔺
@sentry/browser (incl. Logs)	27.18 kB	+0.3%	+81 B 🔺
@sentry/browser (incl. Metrics & Logs)	27.86 kB	+0.29%	+80 B 🔺
@sentry/react	27.48 kB	+0.26%	+71 B 🔺
@sentry/react (incl. Tracing)	45.05 kB	+1.28%	+566 B 🔺
@sentry/vue	30.56 kB	+1.61%	+483 B 🔺
@sentry/vue (incl. Tracing)	44.59 kB	+1.23%	+538 B 🔺
@sentry/svelte	25.74 kB	+0.31%	+77 B 🔺
CDN Bundle	28.41 kB	+0.3%	+83 B 🔺
CDN Bundle (incl. Tracing)	43.75 kB	+1.46%	+628 B 🔺
CDN Bundle (incl. Logs, Metrics)	29.78 kB	+0.31%	+92 B 🔺
CDN Bundle (incl. Tracing, Logs, Metrics)	44.83 kB	+1.5%	+660 B 🔺
CDN Bundle (incl. Replay, Logs, Metrics)	68.59 kB	+0.16%	+103 B 🔺
CDN Bundle (incl. Tracing, Replay)	80.64 kB	+0.78%	+621 B 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics)	81.66 kB	+0.75%	+604 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback)	86.17 kB	+0.72%	+615 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics)	87.2 kB	+0.71%	+610 B 🔺
CDN Bundle - uncompressed	82.99 kB	+0.34%	+279 B 🔺
CDN Bundle (incl. Tracing) - uncompressed	129.77 kB	+1.5%	+1.92 kB 🔺
CDN Bundle (incl. Logs, Metrics) - uncompressed	87.14 kB	+0.33%	+279 B 🔺
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed	133.19 kB	+1.46%	+1.92 kB 🔺
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed	210.12 kB	+0.14%	+279 B 🔺
CDN Bundle (incl. Tracing, Replay) - uncompressed	246.65 kB	+0.79%	+1.92 kB 🔺
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed	250.05 kB	+0.78%	+1.92 kB 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed	259.56 kB	+0.75%	+1.92 kB 🔺
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed	262.95 kB	+0.74%	+1.92 kB 🔺
@sentry/nextjs (client)	47.47 kB	+1.24%	+579 B 🔺
@sentry/sveltekit (client)	43.2 kB	+1.36%	+577 B 🔺
@sentry/node-core	57.86 kB	+3.78%	+2.1 kB 🔺
@sentry/node	174.86 kB	+1.43%	+2.46 kB 🔺
@sentry/node - without tracing	97.97 kB	+2.02%	+1.94 kB 🔺
@sentry/aws-serverless	115.22 kB	+2.11%	+2.38 kB 🔺

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.
⚠️Warning: Base artifact is not the latest one, because the latest workflow run is not done yet. This may lead to incorrect results. Try to re-run all tests to get up to date results.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	9,446	-	14,229	-34%
GET With Sentry	1,714	18%	2,638	-35%
GET With Sentry (error only)	6,170	65%	9,829	-37%
POST Baseline	1,219	-	1,627	-25%
POST With Sentry	601	49%	855	-30%
POST With Sentry (error only)	1,063	87%	1,425	-25%
MYSQL Baseline	3,204	-	4,517	-29%
MYSQL With Sentry	462	14%	548	-16%
MYSQL With Sentry (error only)	2,584	81%	3,802	-32%

View base workflow run