t3-oss/t3-env

Health v2 · maintenance only

Adoption not part of the score

3997 stars · 129 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A TypeScript library for defining and validating environment variables with full type safety using any Standard Schema compliant validator like Zod or Valibot. It separates server and client variables, prevents accidental exposure of secrets, and works framework-agnostically with Next.js, Nuxt, Vite, and more.

Use cases

• validate environment variables at build time
• get type-safe autocomplete for process.env
• prevent server env vars leaking to the client
• fail fast when env vars are missing in deployment
• share env validation across Next.js and Nuxt apps
• use zod schemas for environment configuration

When to choose

• you want compile-time and runtime validation of env vars in a TypeScript app
• you need strict server/client env separation in Next.js or Nuxt
• you want framework-agnostic env validation with Standard Schema support

When to avoid

• you use plain JavaScript without type checking
• your project has no build step or module bundler
• you only need simple dotenv-style loading without validation

Facets

library · maturity active

configuration-management form-handling developer-tools web-development developer-tools backend frontend bun cross-platform environment-variables type-safety zod standard-schema nextjs nuxt vite schema-validation nodejs deno typescript

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