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Editor's pickUse Zod schemas to validate Next.js environment variables at build and server startup, infer TypeScript types, and keep secrets out of client bundles.
Troubleshoot TypeScript cannot find module and cannot find name errors. Check dependencies, module resolution, aliases, declarations, casing, and bundlers.
Troubleshoot Next.js image optimization errors with remotePatterns, image dimensions, loader settings, and deployment checks for production.
Learn how Next.js 15 fetch caching, revalidation, route behavior, and cache invalidation work—and how to keep browser and CDN caching separate.
Fix a Next.js API route 405 by checking route methods, fetch settings, URLs, and response status. Includes GET and POST examples and curl tests.
Keep Next.js secrets out of browser bundles: use .env files safely, understand NEXT_PUBLIC_ exposure, and configure secrets for deployment.