pub(all) enum ShellAction {
  ShowHelp
  RunFile(String)
  RejectArgs
} derive(Eq)

fn normalize_output(output : String) -> String

fn parse_args(args : Array[String]) -> ShellAction

async fn read_input_file(path : String) -> String

fn run_input(input : String) -> String

fn run_interactive_input(input : String) -> String

fn usage() -> String