Next.js · Middle · Question 61 of 75

What is `instrumentation-client.ts` for?

✓Correct answer: Running client-side monitoring or analytics setup before the app becomes interactive
2Registering OpenTelemetry on the server
3Configuring the client router's cache

Explanation

Put it in the project root (or src). It needs no exports - the code simply runs early in the browser, e.g. to init error tracking.

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