Building a Real Event Bus in VibeCodeArena

There’s a moment in every growing codebase where things start to feel… tangled. A button click updates three different parts of the UI. A network response triggers state changes across multiple modules. A login event suddenly needs to notify analytics, UI, cache, and permissions. At first, you wire things directly: loginButton . onclick = () => { updateUI (); trackAnalytics (); refreshData (); }; It works. Until it doesn’t. Because now everything knows about everything. And that’s where an event