Build-Time vs Runtime Validation
When to validate env vars during build, at startup, and in CI.
1 min read
Blog
Posts in "guides"
Using CtroEnv in Deno and Bun
CtroEnv detects Deno and Bun environments automatically — no configuration needed.
1 min read
Using CtroEnv on Cloudflare Workers
Validate environment variables in Cloudflare Workers with workersSource.
1 min read
Error Handling Patterns with CtroEnv
Graceful degradation, per-environment handling, and custom error reporting.
1 min read
Environment Variables in Next.js
Server/client split, build-time validation, and secret access with the CtroEnv Next.js adapter.
1 min read
Build-Time Env Validation with Vite
Catch misconfigured env vars during the Vite build with ctroenvPlugin.
1 min read
Building Custom Validators
Extend CtroEnv with your own validator factories using createValidator and applyChain.
1 min read
CI/CD Patterns for Environment Validation
Catch missing env vars before they reach production with ctroenv check and validate.
1 min read
Debugging Environment Variable Errors
Understand every CtroEnv error message and how to fix it.
1 min read
Migrating from dotenv to CtroEnv
Replace scattered process.env access with a single typed schema.
1 min read
Testing Your Environment Variables with CtroEnv
Use objectSource() to test env validation without touching process.env.
1 min read
Environment Variables in Monorepos
Schema composition for reusable env definitions across monorepo packages with extendSchema.
1 min read
Protecting Secrets at Runtime
Runtime secret masking prevents accidental leaks of JWT secrets, API keys, and database credentials.
1 min read
Why CtroEnv?
Bring the same rigor from your type system to the environment variables your app depends on.
1 min read