Type-Safe Environment Variables in Next.js with @t3-oss/env-nextjs and Zod (2026)
Stop shipping empty API keys. Validate Next.js env vars at build time with @t3-oss/env-nextjs and Zod 4: server/client split, Turbopack, and Docker deployments.
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Next.js Forms with React Hook Form and Zod: Type-Safe Validation with Server Actions (2026)
Build type-safe forms in Next.js with React Hook Form, Zod, and Server Actions. Includes useActionState, file uploads, error handling, and progressive enhancement patterns for Next.js 15 and 16.