Preserve HAST element data and properties

[AmanCrafts]

PR Description

Title

feat(core): preserve HAST data and properties in codeToHast

Description

This PR adds support for preserving HAST data and properties when using codeToHast.

Currently, when codeToHast generates the HAST tree, it creates a new pre element and does not allow passing custom data or properties to it (other than meta which is handled specifically). This change adds a data property to CodeToHastOptions which is then assigned to the data property of the root pre element in the generated HAST.

This is useful for integrations (like rehype-shiki or remark-rehype) that want to preserve metadata from the original code block (e.g. fileName, positional info) in the generated HAST, allowing other plugins to consume it.

Changes

• packages/types/src/options.ts: Added data property to CodeToHastOptionsCommon.
• packages/core/src/highlight/code-to-hast.ts: Updated tokensToHast to assign options.data to preNode.data.

Related Issue

Fixes #629 (Preserve HAST element data and properties)

Checklist

• Tests added/updated
• Documentation updated (N/A - internal API change, but self-documenting in types)
• Linting passed

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.20%. Comparing base (61c87e8) to head (698b134).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1204   +/-   ##
=======================================
  Coverage   95.20%   95.20%           
=======================================
  Files          92       92           
  Lines        7922     7923    +1     
  Branches     1689     1689           
=======================================
+ Hits         7542     7543    +1     
  Misses        374      374           
  Partials        6        6           

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