The **happiness-format** package is a command‑line tool (and editor plugin) that automatically reformats JavaScript source code according to a “Hapiness” style—essentially the same rules as the original *semistandard‑format* but with semicolons and tab indentation. It is aimed at developers who want a simple way to enforce consistent code style across projects, either by printing formatted output, overwriting files, or integrating the formatter into editors like Sublime Text or Atom.