recursiveRemoveFiles.js

var fs = require('fs')
  , path = require('path')
  , _ = require('underscore');

var rootPath = "/path/to/remove";
removeDirForce(rootPath);

// path should have trailing slash
function removeDirForce(dirPath) {
  fs.readdir(dirPath, function(err, files) {
    if (err) {
      console.log(JSON.stringify(err));
    } else {
      if (files.length === 0) {
	fs.rmdir(dirPath, function(err) {
	  if (err) {
            console.log(JSON.stringify(err));
	  } else {
	    var parentPath = path.normalize(dirPath + '/..') + '/';
	    if (parentPath != path.normalize(rootPath)) {
	      removeDirForce(parentPath);
	    }
	  }
	});
      } else {
	_.each(files, function(file) {
	  var filePath = dirPath + file;
	  fs.stat(filePath, function(err, stats) {
	    if (err) {
	      console.log(JSON.stringify(err));
	    } else {
	      if (stats.isFile()) {
		fs.unlink(filePath, function(err) {
		  if (err) {
                    console.log(JSON.stringify(err));
		  }
		});
	      }

	      if (stats.isDirectory()) {
		removeDirForce(filePath + '/');
	      }
	    }
	  });
	});
      }
    }
  });
}

This was used to cheat a test. Random curiosity :)