feat(oas:cli): output better error when no command is provided

[patrick-medusajs]

What

Improve error messages when incorrect arguments are passed to medusa-oas cli

Why

Improve DevX and allow developers to self-troubleshot issues.

How

• Declare a base/root command that displays --help when invoked.
• Display help by default when a parsing error occurs by enabling showHelpAfterError on all commands.

Tests

Test 1 - root

• Run yarn medusa-oas
• Expect output:

No command provided.
Usage: medusa-oas [command]

Commands:
  oas [options]     Compile full OAS from swagger-inline compliant JSDoc.
  client [options]  Generate API clients from OAS.

Test 2 - root with unknown option

• Run yarn medusa-oas --foo
• Expect same output as above

Test 3 - subcommand with error

• Run yarn medusa-oas oas --foo
• Expect error: unknown option '--foo' and the medusa-oas oas --help to be displayed

[changeset-bot]

🦋 Changeset detected

Latest commit: 9e7a652

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@medusajs/medusa-oas-cli	Patch
@medusajs/oas-github-ci	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated
medusa-docs	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Mar 24, 2023 at 3:29PM (UTC)