Integrations Overview

Varlock ships with official integrations that wire the CLI, runtime helpers, and framework-specific plugins together so your configuration is validated, type-safe, and protected everywhere it runs.

If you are working in a monorepo, start with the Monorepos guide for schema layout, root-level dependency overrides, and CI patterns before picking per-framework integrations below.

Integrations let you:

load and validate .env files automatically during dev and use them in CI/CD and production
inject config into your code at build or request time
enable runtime protections such as leak prevention, and log redaction

Official integrations

JavaScript / Node.js: use varlock in custom toolchains, scripts, and servers
Bun: instructions to set up Varlock with Bun
Next.js: drop-in replacement for @next/env
Vite: Vite plugin that validates and replaces at build time
Qwik: use the Vite integration
React Router: use the Vite integration
Cloudflare Workers: use the Vite integration or Wrangler vars/secrets directly
Astro: Astro integration built on top of our Vite plugin
SvelteKit: use the Vite integration, or the Cloudflare integration’s SvelteKit plugin when deploying to Workers
TanStack Start: use the Vite integration, or the Cloudflare integration when deploying to Workers
Expo / React Native: Expo and React Native CLI: Babel plugin + Metro config wrapper with compile-time replacements and server route support (Expo only)
GitHub Actions: validate your .env.schema in GitHub Actions workflows
Python: varlock run + a generated typed env module (also Pydantic Settings / environs)
Rust: a generated, serde-derived env module
Go: a generated env package
PHP: a generated, typed env class
Other languages: generated-module overview + guidance for any other non-JS runtime
Docker: a Docker wrapper around the varlock CLI including examples
mise: install varlock and wire validated env vars into your tasks
direnv: load validated env vars directly into your shell session

Coming soon

We’re working on more first-party integrations for popular runtimes, frameworks and hosting platforms. If yours isn’t listed yet, let us know!