feat: pass in additional attributes for script tags

[chanceaclark]

What/Why?

This PR enhances the scripts-transformer.ts to properly handle HTML attributes from BigCommerce script tags beyond just src attributes.

What Changed

• Added new extractAttributes() function that parses and extracts all HTML attributes from script tags (e.g., async, defer, data-*, crossorigin)
• Modified extractScriptInfo() to preserve additional attributes when transforming scripts
• Updated the transformer logic to merge extracted attributes with consent-based attributes

Why This Matters

Previously, the transformer only extracted src and inline content from BigCommerce script tags, losing important attributes like async, defer, or custom data attributes. This caused scripts to lose their intended loading behavior and metadata during transformation.

Technical Details:

• The new extractAttributes() function uses regex to parse the opening <script> tag
• Handles both boolean attributes (e.g., async, defer) and key-value attributes (e.g., data-category="analytics")
• Boolean attributes are stored with empty string values per HTML spec
• The src attribute is explicitly excluded since it's already handled separately
• Extracted attributes are merged with consent manager attributes, with consent attributes taking precedence

Testing

Migration

Rebase the scripts-transformer.ts file.

[changeset-bot]

🦋 Changeset detected

Latest commit: 030f2d3

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

This PR includes changesets to release 1 package

Name	Type
@bigcommerce/catalyst-core	Patch

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Project	Deployment	Review	Updated (UTC)
catalyst	Ready	Preview, Comment	Jan 8, 2026 6:33pm