dotenv-diff - Validate environment variables in codebases

Show HN: Dotenv-Diff v3.0.0

dotenv-diff is a powerful CLI tool that scans your codebase to detect missing, unused, duplicated, or misused environment variables before they cause runtime errors. It offers first-class support for SvelteKit, Next.js, and Nuxt, while also working seamlessly with Node.js, Vue, and other modern JavaScript/TypeScript frameworks. By integrating into Git hooks and CI/CD pipelines, it ensures teams stay aligned on required variables, reduces the risk of committing sensitive data, and scales effortlessly for monorepos. With features like expiration warnings and framework-specific checks, it helps developers catch configuration issues early in the development lifecycle.

"It helps you catch missing, unused, duplicated, and misused variables early, before they cause runtime errors."