The Chrome team is experimenting with a new File System Observer API that informs developers of changes to the file system.

Chrome's platform is a leading web browser developed by Google, offering insights into web standards, browser features, and web development tools. Through documentation, developer tools, and webinars, Chrome provides insights into building modern web applications and optimizing performance. Developers can learn about web APIs, progressive web apps (PWAs), and Chrome DevTools to create fast, secure, and user-friendly web experiences.

Chrome Developers

The File System Observer API, introduced in Chrome 129, allows developers to be automatically alerted of file system changes without constant polling. It enhances web app functionality by allowing real-time updates for changes in files and directories. This can be particularly useful for web-based IDEs, apps that sync filesystem changes with servers, and other similar applications. The API involves initializing a FileSystemObserver, observing files or directories, handling changes via callbacks, and stopping the observation when needed. Developers can test it locally via Chrome's flags and participate in its origin trial starting September 2024.

The File System Observer API origin trial