eldargab/node-fake-fs

fake-fs is a Node.js library that provides a mock file system for testing purposes. It supports various file system operations like stat, exists, readdir, readFile, writeFile, mkdir, rmdir, unlink, and rename, allowing developers to simulate file system interactions without affecting the actual file system. This tool is particularly useful for developers writing tests for Node.js applications that involve file system operations, ensuring tests are isolated and don't depend on the real file system state.