Virtual File System for Node.js

Note: This code is not maintained anymore. Use memfs and unionfs instead.

Mount virtual files to your fs filesystem.

var nodefs = require("nodefs");

var layer = {
    "test/index.js": "console.log('Hello World!')",
    "text.txt": "Hello again!"
    // ...
};

nodefs.mount("./", layer);
require("./test/index.js"); // Hello World!

var fs = require("fs");
console.log(fs.readFileSync("text.txt").toString()); // Hello again!

Why is it useful? It is used in nodefs-drive package to pack your Node.js projects into a single .js file. When you run the file, nodefs creates the virtual file system and you app runs as if it was running from your hard drive.

TODOs

• Crate a light version with only fs.readFileSync, fs.statSync, and fs.realpathSync.
• Implement the rest of the mehtods.
• Crate a version with read-only file system.
• Split project in multiple packages, lets say: (1) in-memory file system; (2) read-only file system; (3) etc.., and (4) a union file system that can combine then all together with fs module.
• http://wiki.commonjs.org/wiki/Filesystem

Interesting:

Since "fs" must be frozen to be secure, there is no need for the "file" module to assemble aparatus for late binding to "fs" methods.

http://wiki.commonjs.org/wiki/Filesystem/Names