Restore attachTo tabindex when tour is hidden

[RobbieTheWagner]

Fixes#3334

Summary by CodeRabbit

Release Notes

• Bug Fixes
  • Fixed tabindex handling to properly preserve and restore the original keyboard focus attributes of elements during tour steps
  • Elements now correctly return to their original accessibility state after tour completion, improving focus management and keyboard navigation

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Project	Deployment	Actions	Updated (UTC)
shepherd-docs	Ready	Preview, Comment	Feb 5, 2026 2:58pm
shepherd-landing	Ready	Preview, Comment	Feb 5, 2026 2:58pm

[coderabbitai]

📝 Walkthrough

Walkthrough

The changes implement tabindex preservation for Shepherd.js tour steps. When a step attaches to an element and forces it focusable by setting tabIndex to 0, the original tabindex value is stored. Upon step hide or destruction, the original tabindex is restored (or the attribute is removed if none previously existed).

Changes

Cohort / File(s)	Summary
Svelte Component Integration shepherd.js/src/components/shepherd-element.svelte	Calls step._storeOriginalTabIndex() to capture the original tabindex before forcing focusability.
Core State & Lifecycle Management shepherd.js/src/step.ts	Introduces _originalTabIndexes Map to track original values; adds _storeOriginalTabIndex() and _restoreOriginalTabIndexes() methods; integrates restoration into show/hide lifecycle and destruction.
Test Suite shepherd.js/test/unit/step.spec.js	Adds "tabIndex preservation" test suite with 6 scenarios covering no-tabindex, negative values, positive values, destruction during tour, multiple cycles, and intermediate changes.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Poem

🐰 A tour through indices, stored with care,
Original values preserved everywhere,
When steps do hide and tours complete,
Restored to home, the circles sweet! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: restoring the original tabindex attribute of the attach-to element when the tour is hidden, which is the core functionality added across all modified files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch restore-tabindex

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[qltysh]

Coverage Impact

⬆️ Merging this pull request will increase total coverage on main by 0.21%.

Modified Files with Diff Coverage (2)

Rating	File	% Diff	Uncovered Line #s
	shepherd.js/src/step.ts	100.0%
	shepherd.js/src/components/shepherd-element.svelte	100.0%
	Total	100.0%

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

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  • Indirect Changes: Changes to File Coverage for files that were not modified in this PR. Learn more.