home/
  a/
    file1
    file2
  b/
    file1
    file2
  c/
  bb/
    file1
    file2
  d/
    file1
    file2
  e/
    file1
    file2
    sub/
  deep_node_modules/
    ma/
      file1
      file2
    mb/
      file1
      file2
    mc/