Node.js filesystem walker (prints the paths of all files in a directory)

path-printer.js

fs = require('fs');
path = require('path');


function traverseDirectory(root) {
  var visitedDirs = {};  // used as a set; all already visited folders
                         // (necessary because we visit symlinks)

  var traverseRecursively = function(root) {
    try {
      var children = fs.readdirSync(root);
    } catch (err) { return; }
    for (var i = 0; i < children.length; i++) {
      var childPath = path.join(root, children[i]);
      try {
        var fileStat = fs.statSync(childPath);
      } catch (err) { return; }
      if (fileStat.isDirectory()) {
        try {
          var childRealPath = fs.realpathSync(childPath);
        } catch (err) { return; }
        if (childRealPath in visitedDirs) {
          continue;
        } else {
          visitedDirs[childRealPath] = true;
          traverseRecursively(childPath);
        }
      } else if (fileStat.isFile()) {
        console.log(childPath);  // node hangs here
      }
    }
  }

  traverseRecursively(root);
}

traverseDirectory('/');