21 lines
893 B
Text
21 lines
893 B
Text
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---
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title: config.analytics is deprecated
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---
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## Why This Error Occurred
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The Core Web Vitals of your Next.js application could be tracked and sent to any backend of your choice.
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Earlier version of Next.js enable tracking by specifying `analyticsId` into your `next.config.js` file.
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This configuration mechanism will be removed in nextjs@15, as it could be elegantly replaced with `useReportWebVitals` built-in hook.
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## Possible Ways to Fix It
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To remove this warning, you must remove `analyticsId` from your `next.config.js` file.
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To keep tracking your Core Web Vitals, you could:
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- use `useReportWebVitals` hook as explained [here](https://nextjs.org/docs/app/api-reference/functions/use-report-web-vitals) and send the metrics to any backend of your choice.
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- [install and use](https://vercel.com/docs/speed-insights/quickstart) `@vercel/speed-insights` package into your application
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