fix a bug in demo

[hczphn]

Summary

• pnpm run demo:node -- --help crashed because parseArgs treated
  --help as a positional argument, not a flag. The CLI then tried to
  dispatch "--help" as an unknown command.
• Added command === 'help' and command === '--help' checks so help
  text is shown regardless of how the argument is parsed.

Test plan

• Run pnpm run demo:node -- --help — should print help text
• Run pnpm run demo:node -- help — should print help text
• Run pnpm run demo:node (no args) — should print help text

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical bug in the Node.js demo application's command-line interface. Previously, attempting to access the help documentation using --help would result in a crash due to misinterpretation of the argument. The changes ensure robust handling of help requests, improving the user experience and reliability of the demo.

Highlights

• Bug Fix: Resolved an issue where pnpm run demo:node -- --help crashed because parseArgs incorrectly treated --help as a positional argument, leading to an unknown command error.
• Improved Help Command Handling: Added explicit checks for command === 'help' and command === '--help' within the runCli function to ensure the help text is displayed correctly, regardless of how the argument is parsed.

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Changelog

• demos/node/src/cli/main.ts
  • Modified the runCli function to include additional checks for 'help' and '--help' as commands.
  • Ensured that the help text is displayed when 'help' or '--help' are passed as positional arguments.

Activity

• No specific activity has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request fixes a bug where the demo CLI would crash when --help was passed as a positional argument. The fix correctly identifies various ways of requesting help and displays the help text. The change is correct and addresses the issue. I've added one suggestion to improve the readability and maintainability of the condition for checking if help was requested.

[gemini-code-assist]

While this logic is correct, for better readability and maintainability, you could group the help command checks. Using an array for help commands makes it easier to add more aliases in the future.

Suggested change

	if (!command || command === 'help' || command === '--help' || flags.help) {
	if (!command || ['help', '--help'].includes(command) || flags.help) {