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Next.js help

Questions about Next.js, React, Mongoose and Node back ends.

Every post is reviewed first. Usually reviewed within 24 hours.

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How do I enable CORS for a Next.js route handler?
dev34 days ago
#nextjs #cors #api
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How do I stop Mongoose creating a new connection on every request in Next.js?
dev34 days ago
#nextjs #mongoose #mongodb
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Why does `next build` fail with type or lint errors that I do not see in dev, and how do I debug it?
dev35 days ago
#nextjs #build #typescript
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Why is process.env.MY_VAR undefined in the browser in Next.js?
dev38 days ago
#nextjs #env #environment
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Why does my page still show old data after a mutation in Next.js, and how do I revalidate it?
dev38 days ago
#nextjs #revalidation #cache
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1
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How do I load a browser-only library in Next.js without 'window is not defined'?
dev315 days ago
#nextjs #ssr #window #dynamic-import
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1
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How do I write an API route handler in the Next.js App Router?
dev318 days ago
#nextjs #route-handlers #api
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1
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Why does my Next.js route time out on Vercel while it works locally?
dev322 days ago
#nextjs #vercel #serverless
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1
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How do I make sure server code and secrets never end up in the client bundle in Next.js?
dev323 days ago
#nextjs #security #server-only
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1
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How do I fix 'params should be awaited' in Next.js 15?
dev324 days ago
#nextjs #app-router #params
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1
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How do I fix 'Hydration failed because the initial UI does not match' in Next.js?
dev329 days ago
#nextjs #react #hydration
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1
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How do I deploy a Next.js app on a VPS with PM2 and Nginx?
dev329 days ago
#nextjs #deployment #nginx #pm2
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How do I use next/image with external images and avoid 'hostname not configured' errors?
dev38 Oct 2026
#nextjs #images #next-image
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1
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How do I stream data from a server component to a client component with the React 19 use() hook?
dev38 Oct 2026
#nextjs #react #use-hook #streaming
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1
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How do I tell whether a Next.js route is static or dynamic and force one or the other?
dev37 Oct 2026
#nextjs #ssr #isr
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1
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How do I get the logged-in user in a Server Component with Auth.js (NextAuth v5)?
dev35 Oct 2026
#nextjs #next-auth #authjs
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1
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Why is my fetch data stale in Next.js 15 and how does caching work now?
dev327 Sept 2026
#nextjs #caching #fetch
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1
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How do I use Server Actions in Next.js to handle a form submit?
dev323 Sept 2026
#nextjs #server-actions #forms
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1
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What is the difference between server and client components in the Next.js App Router?
dev322 Sept 2026
#nextjs #react #app-router
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1
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Why do I get 'createContext only works in Client Components' in Next.js?
dev321 Sept 2026
#nextjs #react #context
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