I vaguely recall something like that, a virtual file system using browser local storage. A search yields: > BrowserFS is an in-browser file system that emulate

I vaguely recall something like that, a virtual file system using browser local storage. A search yields: > BrowserFS is an in-browser file system that emulates the Node JS file system API and supports storing and retrieving files from various backends. https://github.com/jvilk/BrowserFS https://github.com/jvilk/BrowserFS It supports storage backends such as: in memory, LocalStorage, IndexDB, HTTP, or the FileSystem API.