How to use the buntstift.buntstift.exit function in buntstift

if (packageJsonOfModule && packageJsonOfModule.scripts && packageJsonOfModule.scripts[ex.command]) {
      const args = process.argv.splice(3);

      try {
        await runCommand(inlineLists`npm run ${ex.command} ${args}`, { cwd });
      } catch (exRunCommand) {
        exit(exRunCommand);
      }

      exit();
    }

    const suggestions = findSuggestions({ for: ex.command, in: validCommands });

    buntstift.error(`Unknown command '${ex.command}', did you mean '${suggestions[0].suggestion}'?`);
    buntstift.exit(1);
  }

  if (!parsed.command) {
    parsed.command = defaultCommand;

    if (parsed.argv.length > 0) {
      if (parsed.argv.includes('--version') || parsed.argv.includes('-v')) {
        buntstift.info(packageJson.version);
        buntstift.exit(0);
      }

      if (parsed.argv.includes('--help') || parsed.argv.includes('-h')) {
        parsed.command = 'help';
      }
    }
  }

const exit = function (ex) {
  buntstift.line();

  if (!ex) {
    buntstift.exit(0);

    return;
  }

  if (ex.message) {
    buntstift.verbose(ex.message);
  }

  if (ex.stack) {
    buntstift.verbose(ex.stack);
  }

  buntstift.exit(1);
};