Dev Tools · 2h ago
Build Your Own Env Validation in 60 Lines of TypeScript
A developer shares a 60-line TypeScript function to validate environment variables without external libraries. The custom solution supports string, number, and boolean types with optional defaults. It offers control and minimal dependencies but lacks the convenience of established tools like Zod or Joi.
Meridian48 take
While rolling your own validation reduces dependencies, it also means reinventing error handling and edge cases that battle-tested libraries already solve.
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How to Validate Environment Variables Without a Library (And Why You Should Anyway) →
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env-validationtypescript