File System DB

File System DB (FSDB) is a lightweight, synchronous, file-based JSON database designed for Node.js environments, currently at version 2.1.0. It allows developers to store and retrieve data using a key-value paradigm, supporting dot notation for nested JSON fields. A key differentiator is its simplicity and lack of external dependencies, relying solely on Node.js's built-in File System module. Data is stored directly as human-readable JSON files, making it easy to inspect and manage backups. While highly accessible, its synchronous nature means operations can potentially block the event loop for very large datasets, and its reliance on persistent file storage makes it unsuitable for ephemeral hosting environments like Heroku or Vercel. The library ships with TypeScript types, enhancing developer experience for type-safe applications. New minor versions appear to be released on an as-needed basis.