Developer releases zero-dependency TypeScript library for safer env variable validation

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A developer has published @harmand66/typesafe-env, a lightweight, zero-dependency TypeScript library designed to validate environment variables at application startup. The tool addresses a common Node.js problem where missing or incorrectly typed environment variables cause apps to crash in production, often well after launch. Using a simple configuration object, developers can declare each variable's expected type, whether it is required, and an optional default value. If any variable is missing or invalid, the application fails immediately at boot with a clear error message rather than silently misbehaving later. The library is available on npm and GitHub, and its author positions it as a minimal alternative to heavier validation tools like Zod for this specific use case.

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