The 1.2.0 update focuses on optimizing execution speed, introducing new methods for object manipulation, and refining internationalization features.
Key Features & Enhancements
- Faster Execution – The JavaScript engine has been optimized, delivering up to 30% faster runtime performance. 
- New - Object.groupBy()Method – Developers can now categorize objects based on a specified key, making data structuring easier.
- Enhanced - Intl.DateTimeFormat– Improved support for custom time zones simplifies working with localized date and time formats.
Additional Improvements
- ES Modules Load Asynchronously – Ensuring faster script execution and better module handling. 
- Garbage Collection Optimizations – Improved memory management to reduce leaks and optimize performance. 
Bug Fixes
- Floating-Point Precision Fix – - Number.toFixed()now produces more accurate decimal rounding.
- Memory Leak Fix in Async Iterators – Enhancing reliability in applications with extensive async operations. 
