🧠 Stop hoarding memory leaks in your JS apps

In 2025, WeakMap and WeakSet are your best allies for smart caching and automatic cleanup.

✅ Auto‑cleaning animation state
✅ Layout cache that vanishes with the DOM
✅ Block form resubmits — no flags, no hacks
✅ Component data fetch guards without memory leaks

📖 Clean examples + when (and when not) to use →
https://blog.dataengineerthings.org/evolving-stream-schemas-in-flink-hands-on-playbook-2025-c7c43bacac70