Developer Builds Production-Grade Video Downloader API in TypeScript, Shares Architecture Lessons

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A developer has released V2 of Vidiflow, a production-ready backend API built with TypeScript and Node.js that supports video downloads from platforms including YouTube and TikTok. The project was designed to address gaps in existing tutorials, which the author found too simplistic or lacking features like authentication, queuing, and proper error handling. Vidiflow uses a modular architecture with a provider interface, allowing new platforms to be added with minimal code changes, and integrates yt-dlp to handle the complexity of video extraction. Downloads are processed asynchronously via background workers, with real-time progress updates delivered through WebSockets, ensuring the API remains responsive under load. Authentication is handled using short-lived JWT access tokens and hashed refresh tokens stored in httpOnly cookies, following standard security practices.

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