Optimize hot paths

In performance-critical code paths that execute frequently, optimize to reduce unnecessary operations that can impact runtime performance:

1. Minimize repeated type checks - Cache type information or restructure code to avoid redundant typeof calls, especially in loops or frequently called functions

2. Avoid unnecessary allocations - Don’t create new arrays, Sets, or objects when you can work with existing data structures directly

3. Use direct traversal - When operating on DOM nodes or other hierarchical structures, prefer inline traversal over building intermediate collections:

// Avoid this in hot paths
const children = new Set(); // Unnecessary allocation
elements.forEach(el => children.add(el));
children.forEach(child => child.addEventListener(type, listener));

// Prefer this approach
elements.forEach(el => el.addEventListener(type, listener));

1. Be aware of thresholds - Understand the impact of operations based on execution frequency:
   • <1ms: Optimal for very frequent operations
   • <10ms: Good for maintaining 60fps animations
   • <100ms: Maximum for responsive interactions

Operations that take more time should be candidates for optimization when they appear in hot paths.