feat: sidebar active link scroll into view

[btea]

Description

Synchronize with the old version of the document.

Validation

Related Issues

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run node --run test and all tests passed.
• I have check code formatting with node --run format & node --run lint.
• I've covered new added functionality with unit tests if necessary.

[vercel]

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Project	Deployment	Review	Updated (UTC)
api-docs-tooling	Ready	Preview	Jan 7, 2026 5:19am

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.95%. Comparing base (da9f66a) to head (a4edfbc).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #562   +/-   ##
=======================================
  Coverage   79.95%   79.95%           
=======================================
  Files         127      127           
  Lines       12285    12285           
  Branches      866      866           
=======================================
  Hits         9823     9823           
  Misses       2459     2459           
  Partials        3        3           

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[Copilot]

Pull request overview

This PR adds automatic scrolling functionality to bring the active sidebar link into view when a documentation page loads. The implementation synchronizes the web generator with similar functionality that exists in the legacy HTML generator.

• Introduces a new bootstrap.js file that handles sidebar scroll behavior
• Integrates the bootstrap script into the HTML template
• Uses smooth scrolling to center the active page link in the sidebar

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
src/generators/web/bootstrap.js	New client-side script that implements the sidebar auto-scroll functionality by finding the active link and scrolling it into view
src/generators/web/template.html	Adds script tag to load the new bootstrap.js file in the page head

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[ovflowd]

Hey @btea doc-kit isn't the place where this should be fixed. The fix should be done on @node-core/ui-components and there's already an open PR there: nodejs/nodejs.org#8517

[btea]

I'm sorry, thank you for your guidance.

[ovflowd]

I'm sorry, thank you for your guidance.

No need to apologize!! I absolutely appreciate your investment here ❤️