Implement value comparison with useRef for autofill detection

[codegen-sh]

Overview

This PR implements a technique for detecting browser autofill using value comparison with useRef. This approach monitors input values and detects when they change without user interaction, which is a common indicator of browser autofill.

Implementation

• Created a new useAutofillDetection hook that:
  • Tracks user interaction with a useRef flag
  • Compares previous and current input values
  • Detects when values change without user interaction
  • Provides an isAutofilled state and reset function
• Added a Storybook demo that showcases the technique with:
  • Name, email, phone, and address fields
  • Visual indicator when fields are autofilled
  • Form validation using Zod

Technical Details

This approach works by:

1. Tracking when the user is interacting with the input
2. Monitoring value changes in the input
3. Detecting when values change without user interaction
4. Setting an autofilled state when this occurs

Testing

To test this implementation:

1. Run Storybook with yarn storybook
2. Navigate to the "RemixHookForm/AutofillValueComparison" story
3. Try using your browser's autofill feature to populate the fields
4. Observe the "Autofilled" indicator appearing on fields that were autofilled

Related Issues

Addresses subissue 360T-607: Implement value comparison with useRef for autofill detection

Part of parent issue 360T-602: Explore adding autofill management to form library

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💻 View my work • 👤 Initiated by Jake Ruesink • About Codegen
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✨ Finishing Touches

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• Create PR with unit tests
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• Commit unit tests in branch feature/autofill-value-comparison

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