Stop Writing Manual API Docs: Validate and Document your Express.js Fields in One Go 🚀

The "Double Work" Problem As Express developers, we’ve all been there. You spend an hour perfecting your validation logic for a new endpoint: You check for required fields. You validate email formats. You set minimum string lengths. Then, you have to do it all over again in a Swagger file or a Postman collection so your frontend team knows how to use the API. If you change a field in the code and forget to update the docs, things break, and Slack messages start flying. I got tired of this manual sync, so I built expressjs-field-validator . What is expressjs-field-validator? It’s a lightweight middleware designed to be the "single source of truth" for your request validation and your API documentation. Key Features: Schema-based Validation : Define rules in a clean object. Automatic Doc Generation : It reads your schemas and generates documentation for you. Zero Bloat : Minimal dependencies to keep your project fast. See it in Action const express = require ( ' express ' ); const { vali