⚡ Bolt: [performance improvement] Optimize useSaveIntegration object creation

[aafre]

💡 What

Wrapped the inline resumeData object literal in useSaveIntegration.ts with a useMemo hook, using contactInfo, sections, and templateId as dependencies.

🎯 Why

In useSaveIntegration, the resumeData object passed to the useCloudSave hook was created inline on every render. Because useCloudSave relies on deep dependency tracking (it runs JSON.stringify inside a useEffect dependency array check), this unstable reference caused JSON.stringify to execute unnecessarily on every single re-render of the editor, negatively impacting performance when building out deep UI trees.

📊 Impact

Eliminates redundant JSON.stringify serializations on every React render cycle within the editor context, significantly reducing main-thread blocking time during typing or rapid UI interactions.

🔬 Measurement

Run pnpm test to ensure there are no logic regressions. Using a performance profiler (or running the benchmark scripts provided during development), the serialization step is completely skipped when the editor re-renders without actual content changes (e.g. state changes unrelated to resume content, or parent component updates).

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PR created automatically by Jules for task 16447738088821432699 started by @aafre

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[gemini-code-assist]

Code Review

This pull request introduces performance optimizations by memoizing the resumeData object within the useSaveIntegration hook to prevent reference inequality and subsequent expensive operations in useCloudSave. Additionally, documentation was added to .jules/bolt.md to record this learning. Feedback suggests further refining the useMemo implementation by using a stable reference for the default empty state and ensuring the dependency array correctly tracks changes in the sections array content.

[gemini-code-assist]

While useMemo correctly stabilizes the returned reference, the factory function is re-executed whenever dependencies change. In the else branch, this means a new object literal for the empty resume data is created on every such execution. To avoid re-creating this object, you can store it in a useRef and reuse the same instance. Additionally, per repository rules, the dependency array for useMemo should use sections.join(',') for the array dependency to properly detect changes in its content rather than just its reference.

Suggested change

	const resumeDataForCloudSave = useMemo(() => {
	return contactInfo && templateId
	? {
	contact_info: contactInfo,
	sections: sections,
	template_id: templateId,
	}
	: { contact_info: { name: '', location: '', email: '', phone: '' }, sections: [], template_id: '' };
	}, [contactInfo, sections, templateId]);
	const emptyResumeDataRef = useRef({ contact_info: { name: '', location: '', email: '', phone: '' }, sections: [], template_id: '' });
	const resumeDataForCloudSave = useMemo(() => {
	return contactInfo && templateId
	? {
	contact_info: contactInfo,
	sections: sections,
	template_id: templateId,
	}
	: emptyResumeDataRef.current;
	}, [contactInfo, sections.join(','), templateId]);

References

1. The dependency array of useMemo should include the values that the memoized calculation depends on. For arrays, a common pattern is to use array.join(',') as the dependency to detect changes in the array's content.

[aafre]

Closing: superseded by #404 (better variable naming). Cherry-picked into #457.

[google-labs-jules]

Closing: superseded by #404 (better variable naming). Cherry-picked into #457.

Understood. Acknowledging that this work is superseded by #404 and stopping work on this task.