feat: Major updates and enhancements for babel-plugin-define

[linsk1998]

Description

I have thoroughly revised the babel-plugin-define library to improve its functionality, reliability, and compatibility. This PR includes several significant updates and new features that enhance the plugin's capabilities and address various edge cases.

Changes

1. Updated Babel Version

   • Upgraded the Babel dependency to the latest stable version. This ensures compatibility with modern JavaScript syntax and improves the overall performance of the plugin.

2. Added Automated Testing

   • Implemented a comprehensive suite of automated tests using [mocha]. These tests cover a wide range of scenarios and edge cases, ensuring the plugin behaves as expected and reducing the likelihood of future regressions.

3. Handled Edge Cases with Internal Variables

   • Addressed a specific edge case where internal variables with the same name as the defined variables would not be replaced. This ensures that only the intended global variables are replaced, while preserving the integrity of local variables.

4. Supported Object Property Replacement

   • Enhanced the plugin to support replacing object properties dynamically. This allows for more flexible and powerful code transformations, making it easier to manage and manipulate object literals.

5. Supported typeof Statement Replacement

   • Added support for replacing typeof statements. This feature enables more advanced code transformations and optimizations, particularly in scenarios where type checks are dynamically defined.

Testing

All changes have been thoroughly tested using the new automated test suite. The tests cover various scenarios, including:

• Basic property replacement
• Nested object handling
• typeof statement replacement
• Edge cases involving internal variables with the same name

Conclusion

This PR significantly enhances the babel-plugin-define library, making it more robust, flexible, and compatible with modern JavaScript development practices. By addressing the edge case with internal variables, we ensure that the plugin behaves predictably and safely in complex codebases. I believe these changes will be beneficial to the community and look forward to your feedback.

Thank you for considering this PR!