pub fn new(command: String) -> Command

pub fn new_with(
  command command: String,
  with options: List(command_option.CommandOption),
) -> Command

pub fn output_sync(
  of command: Command,
) -> Result(command_output.CommandOutput, error.Error)

pub fn spawn(
  command: Command,
) -> Result(child_process.ChildProcess, error.Error)