feat: add autoUpdateOptions to avoid a Floating UI RangeError

[dennisridder]

layoutShift tracking can loop until the browser throws RangeError: Maximum call stack size exceeded. Passing { layoutShift: false } through autoUpdateOptions stops that, and the option is left off steps that never set it.

Summary by CodeRabbit

• New Features
  • Added optional Floating UI automatic-update settings that can be configured across a tour or for individual steps.
  • Tour defaults and step settings are combined, with step values taking precedence and nested settings merged.
  • Updated step settings are applied to tooltip positioning, allowing target tracking behavior to reflect the latest configuration.
• Documentation
  • Added guidance for configuring automatic-update settings.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 47581ffa-9165-4d63-88f1-fe04aa142c42

📥 Commits

Reviewing files that changed from the base of the PR and between 897596a and 07b2732.

📒 Files selected for processing (2)

• shepherd.js/src/step.ts
• shepherd.js/test/unit/utils/floating-ui.spec.js

🚧 Files skipped from review as they are similar to previous changes (2)

• shepherd.js/test/unit/utils/floating-ui.spec.js
• shepherd.js/src/step.ts

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📝 Walkthrough

Walkthrough

The change adds optional autoUpdateOptions to step configuration. Tour and step values are deep-merged, then passed to Floating UI’s autoUpdate. Unit tests cover option forwarding, defaults, overrides, updates to mounted steps, and deep merging.

Changes

Floating UI auto-update configuration

Layer / File(s)	Summary
Option contract and merging shepherd.js/src/step.ts, shepherd.js/src/utils/floating-ui.ts	StepOptions accepts AutoUpdateOptions. mergeTooltipConfig deep-merges tour and step values when either provides options. updateStepOptions uses this merge when supplied options include autoUpdateOptions.
Auto-update runtime passthrough shepherd.js/src/utils/floating-ui.ts, shepherd.js/test/unit/utils/floating-ui.spec.js	setupTooltip passes autoUpdateOptions to autoUpdate. Tests cover forwarding, tour defaults, step overrides, mounted-step updates, and deep merging.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 07b27

The new option is forwarded on initialization and mounted-step updates; no actionable merge risk remains after normal checks.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 27bf5

The new option is limited to client-side tooltip positioning. A partial update to an existing step can discard an inherited setting intended to prevent a browser positioning loop. No access-control or credential impact was identified.

Retained concerns

• Low · reliability · inferred: A partial updateStepOptions call can replace merged auto-update options, dropping a tour-level setting intended to prevent a positioning loop when the tooltip is recreated.

Security review details

Security Blast Radius

• inferred — The identified failure mode concerns tooltip positioning in a browser page. The reviewed flow supplies configuration to Floating UI; it does not establish a credential, tenant, or server-side authority path.

Trust Boundaries and Controls

• observed — Tour and step configuration reaches the existing Floating UI autoUpdate argument through Shepherd's tooltip setup. The available source does not establish that an attacker controls those options.

Resilience and Maintainability Implications

• inferred — If a caller supplies only part of autoUpdateOptions during a runtime step update, the recreated subscription can lose an inherited setting that was preventing the documented positioning loop. Whether callers do so is unknown.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the addition of autoUpdateOptions and its purpose of preventing a Floating UI RangeError.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 3 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Create a new PR

Warning

Some tools did not complete. Review the errors below.

🔧 ESLint

If the error stems from missing dependencies, add them to the package.json file. For unrecoverable errors (e.g., due to private dependencies), disable the tool in the CodeRabbit configuration.

shepherd.js/test/unit/utils/floating-ui.spec.js

(node:2) ESLintIgnoreWarning: The ".eslintignore" file is no longer supported. Switch to using the "ignores" property in "eslint.config.js": https://eslint.org/docs/latest/use/configure/migration-guide#ignore-files
(Use node --trace-warnings ... to show where the warning was created)

Oops! Something went wrong! :(

ESLint: 10.12.0

A config object is using the "root" key, which is not supported in flat config system.

Flat configs always act as if they are the root config file, so this key can be safely removed.

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[coderabbitai]

Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at @shepherd.js/src/utils/floating-ui.ts:
- Around line 96-100: UpdateStepOptions applies new step options without
recomputing the merged autoUpdateOptions, so tooltip setup can lose tour-level
defaults. When incoming options include autoUpdateOptions, merge them with the
existing tour configuration using mergeTooltipConfig before assigning the
updated options; leave updates without autoUpdateOptions unchanged.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: c222cfa8-ad94-44a5-adab-178de5e2dc58

📥 Commits

Reviewing files that changed from the base of the PR and between bf2bcb1 and 27bf5aa.

📒 Files selected for processing (2)

• shepherd.js/src/utils/floating-ui.ts
• shepherd.js/test/unit/utils/floating-ui.spec.js

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.