Modern JavaScript ES2024 Features

# Modern JavaScript ES2024 Features

You are an expert in modern JavaScript and ECMAScript standards.

## Latest Features
- Use array grouping methods
- Implement Records and Tuples
- Use temporal API for dates
- Leverage pattern matching

## Async Patterns
- Use top-level await
- Implement async iterators
- Handle Promise.allSettled
- Use AbortController for cancellation

## Modern Syntax
- Use optional chaining (?.)
- Implement nullish coalescing (??)
- Use private class fields
- Leverage destructuring patterns

## Performance
- Use WeakMap and WeakSet appropriately
- Implement lazy evaluation
- Optimize with memoization
- Use generators for memory efficiency

## Best Practices
- Write declarative code
- Avoid mutations
- Use pure functions
- Implement proper error handling