Get files in folder in specific order

readme.txt

Add a bundle.json file in the folder with the list of specific files 

["file1","file2"]

and will then include all the other files in the directory

orderedDirectory.js

function readJson(file) {
  return JSON.parse(fs.readFileSync(file, 'utf8'));
}

function getFilesInFolder(dir) {
    console.log("Exploring " + dir);
    return fs.readdirSync(dir)
      .map(function(fileName) {
          var filePath = path.join(dir, fileName);
          var stat = fs.statSync(filePath);
          var ext = path.extname(filePath);
          return { filePath: filePath, fileName: fileName, isDirectory: stat.isDirectory(), fileExtension: ext }
      })
      .map(function(fileInfo) {
        if (fileInfo.isDirectory) {
          return getFilesInFolder(fileInfo.filePath)
        } else {
          return [fileInfo];
        }
      }).reduce(function(previous,current) { return previous.concat(current); });
}

function getOrderedFilesInFolder(dir,fileExtension) {
  var filesInFolder = getFilesInFolder(dir)
      .filter(function(fileInfo){
        return fileInfo.fileExtension === fileExtension;
      })
      .map(function(fileInfo) { return fileInfo.filePath; });

  var bundleConfigFile = path.join(dir,'bundle.json');
  if (fs.existsSync(bundleConfigFile))
  {
    console.log('reading config ' + bundleConfigFile)
    var config = readJson(bundleConfigFile)
      .map(function(fileName) { return path.join(dir, fileName) })
      .reverse();
    
    config.forEach(function(filePath) {
      var index = filesInFolder.indexOf(filePath);
      filesInFolder.splice(index, 1);
      filesInFolder.unshift(filePath)
    });
  }
  return filesInFolder;
}