Function parseArgs

scripts/with-storybook.ts:56–96

(argv: string[])

}

function parseArgs(argv: string[]): Options {
  if (argv.includes("--help") || argv.includes("-h")) {
    printHelp();
    process.exit(0);
  }

  let port = parsePort(process.env.STORYBOOK_PORT ?? String(DEFAULT_PORT));
  let timeoutMs = parsePositiveInteger(
    process.env.STORYBOOK_TIMEOUT_MS ?? String(DEFAULT_TIMEOUT_MS),
    "--timeout-ms"
  );

  const delimiterIndex = argv.indexOf("--");
  const optionArgs = delimiterIndex === -1 ? [] : argv.slice(0, delimiterIndex);
  const command = delimiterIndex === -1 ? argv : argv.slice(delimiterIndex + 1);
  if (delimiterIndex === -1 && argv[0]?.startsWith("-")) {
    throw new Error("Missing `-- <command>` delimiter. Run with --help for usage.");
  }
  if (command.length === 0) {
    throw new Error("Missing command after `--`. Run with --help for usage.");
  }

  for (let index = 0; index < optionArgs.length; index += 1) {
    const arg = optionArgs[index];
    if (arg === "--port" || arg === "-p") {
      const value = optionArgs[index + 1];
      if (!value) throw new Error(`${arg} requires a value`);
      port = parsePort(value);
      index += 1;
    } else if (arg === "--timeout-ms") {
      const value = optionArgs[index + 1];
      if (!value) throw new Error(`${arg} requires a value`);
      timeoutMs = parsePositiveInteger(value, arg);
      index += 1;
    } else {
      throw new Error(`Unknown option: ${arg}`);
    }
  }

  return { port, timeoutMs, command };
}

function storybookUrl(port: number): string {
  return `http://127.0.0.1:${port}`;