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// List all files in a directory in Node.js recursively in a synchronous fashion
var walkSync = function(dir, filelist) {
  var fs = fs || require('fs'),
      files = fs.readdirSync(dir);
      // if global filelist doesn't exist, create it.
  filelist = filelist || [];
  // loop through current files
  files.forEach(function(file) {
    // if it is a directory, lets recurse!
    if (fs.statSync(dir + file).isDirectory()) {
      filelist = walkSync(dir + file + '/', filelist);
    }
    else {
      // not a directory, will add the file to file list
      filelist.push(file);
    }
  });
  return filelist;
};