Improvement: Added more context to Shopify webhook registering errors

[ramadanomar]

About Issue

When initializing the Shopify Client with invalid parameters (excluding apiKey), errors are not explicitly thrown, resulting in a silent failure in the background. The user only sees an error message stating, "Error: Missing webhook ID for delete operation." This occurs because the current logic attempts to delete a webhook subscription first if its creation fails, possibly to avoid the "address already in use" exception. However, this logic is poorly documented, and only users running a trigger client with verbose mode enabled will see the debug message, "ERROR CREATING WEBHOOK RESTARTING WITH DELETE FIRST." In cases of invalid secret keys, this approach is ineffective and does not resolve the issue.

✅ Checklist

• I have followed every step in the contributing guide
• The PR title follows the convention.
• I ran and tested the code works

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Testing

Localhost & Shopify Dev Store

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Changelog

• Added input validation for constructor parameters to ensure required arguments are correct.
• Verified that the store domain uses the .myshopify.com domain instead of a custom primary domain.
• Integrated logger.error statements into the webhook created/update/delete logic for improved error tracking.

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Screenshots

Old Behaviour

New Behaviour

💯

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Latest commit: 2ed1eb9

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[nicktrn]

Thanks for this! Just one concern about backwards compat re the hostname option. Let me know what you think. Only accept the code suggestions if you think they make sense. 🙏

[nicktrn]

Thanks for the changes! Made some small edits and will merge later if all goes well.