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experimental.instrumentationHook is no longer needed, because instrumentation.js is available by default. You can remove it from next.config.ts. #17965
Description
Is there an existing issue for this?
- I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
- I have reviewed the documentation https://docs.sentry.io/
- I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases
How do you use Sentry?
Sentry Saas (sentry.io)
Which SDK are you using?
@sentry/nextjs
SDK Version
10.20.0
Framework Version
React@19.2.0 and Next@16.0.0-beta.0
Link to Sentry event
No response
Reproduction Example/SDK Setup
Just setup simple next.js app configured with sentry. both should be of latest version
Steps to Reproduce
Either run next dev or next build
Expected Result
There should be no warnings
Actual Result
⚠ experimental.instrumentationHook is no longer needed, because instrumentation.js is available by default. You can remove it from next.config.ts.
⚠ Invalid next.config.ts options detected:
⚠ Unrecognized key(s) in object: 'instrumentationHook' at "experimental"
⚠ See more info here: https://nextjs.org/docs/messages/invalid-next-config
▲ Next.js 16.0.0-canary.10 (Turbopack)
- Environments: .env.local
- Experiments (use with caution):
✓ browserDebugInfoInTerminal
· clientTraceMetadata
? instrumentationHook (invalid experimental key)
· optimizePackageImports
✓ turbopackFileSystemCacheForDev
Additional Context
Next config code:
import { withSentryConfig } from "@sentry/nextjs";
import { createMDX } from "fumadocs-mdx/next";
import type { NextConfig } from "next";
const nextConfig: NextConfig = {
reactCompiler: true,
reactStrictMode: true,
typedRoutes: true,
transpilePackages: [
"@react-email/components",
"@react-three/drei",
"@react-three/fiber",
"three",
"sonner",
],
experimental: {
clientSegmentCache: true,
browserDebugInfoInTerminal: true,
turbopackFileSystemCacheForDev: true,
optimizePackageImports: [
"@react-email/components",
"@react-three/drei",
"@react-three/fiber",
"three",
"three-globe",
"motion",
],
},
};
const withMDX = createMDX();
const sentryConfig = {
org: process.env.SENTRY_ORG,
project: process.env.SENTRY_PROJECT,
disableLogger: true,
silent: !process.env.CI,
tunnelRoute: "/monitoring",
automaticVercelMonitors: true,
widenClientFileUpload: true,
};
export default withSentryConfig(withMDX(nextConfig), sentryConfig);Metadata
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Activity
linear commentedon Oct 17, 2025
JS-1064
andreiborza commentedon Oct 20, 2025
Hi @coderrshyam, thanks for filing this. We'll take a look.
coderrshyam commentedon Oct 20, 2025
@andreiborza you can refer it from
sentry-javascript/packages/nextjs/src/config/withSentryConfig.ts
Line 179 in 24ecd3a
fix(nextjs): Don't set experimental instrumentation hook flag for nex…
github-actions commentedon Oct 21, 2025
A PR closing this issue has just been released 🚀
This issue was referenced by PR #17978, which was included in the 10.21.0 release.