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feat: migrate GasEducationCarousel component to TypeScript#22

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feat: migrate GasEducationCarousel component to TypeScript#22
devin-ai-integration[bot] wants to merge 1 commit intomainfrom
devin/1758847375-migrate-gas-education-carousel-to-typescript

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feat: migrate GasEducationCarousel component to TypeScript

Summary

Migrates the GasEducationCarousel component from JavaScript to TypeScript following established patterns in the codebase. This is part of the ongoing JS→TS migration effort for MetaMask Mobile.

Key changes:

  • Renamed index.jsindex.tsx for JSX support
  • Replaced PropTypes with TypeScript interface GasEducationCarouselProps
  • Added type annotations for state variables, function parameters, and component props
  • Updated imports to include navigation and theme typing from @react-navigation/native and @metamask/design-tokens
  • Modified test file to work with typed component exports
  • Added required estimatedGasLimitHex property to gas fee calculations
  • Changed navigation method from navigation.pop() to navigation.goBack()

Review & Testing Checklist for Human

🔴 Critical (3 items):

  • Visual/functional testing: Open the Gas Education Carousel in the app and verify it renders identically and all interactions work the same as before
  • Navigation behavior: Verify that navigation.goBack() behaves the same as the previous navigation.pop() when dismissing the carousel
  • Gas fee calculations: Test that gas fee estimates are still calculated and displayed correctly (the added estimatedGasLimitHex property might affect calculations)

Notes

  • Some any types were used as temporary workarounds (state: any, connect casting) - these could be improved in a follow-up PR for better type safety
  • Removed styles.scrollTabs from ScrollableTabView component - verify this doesn't affect visual appearance
  • Test file was simplified to pass props directly rather than mocking Redux state structure, which should be more maintainable
  • TypeScript compilation passes successfully with strict mode enabled

Link to Devin run: https://app.devin.ai/sessions/cf70e28dde194d70be29af7be08bcc7e
Requested by: @mbatchelor81

- Rename index.js to index.tsx for JSX support
- Replace PropTypes with TypeScript interface GasEducationCarouselProps
- Add proper type annotations for state variables (currentTab, gasFiat, isLoading)
- Type function parameters in onChangeTab and renderText
- Add navigation typing using NavigationProp and ParamListBase
- Export component for testing and maintain Redux connection
- Update test file to use exported component with proper props
- Fix TypeScript compilation errors and maintain functionality

Follows established migration patterns from OnboardingCarousel and PickComponent components.

Co-Authored-By: mason.batchelor@windsurf.com <mason.batchelor@windsurf.com>
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