Memory Leak Audit

The #1 bug category in VS Code. This skill encodes the patterns that prevent and fix leaks.

When to Use

• Reviewing code that registers event listeners or DOM handlers
• Fixing reported memory leaks (listener counts growing over time)
• Creating objects in methods that are called repeatedly
• Working with model lifecycle events (onWillDispose, onDidClose)
• Adding event subscriptions in constructors or setup methods

Audit Checklist

Work through each check in order. A single missed pattern can cause thousands of leaked objects.

Step 1: DOM Event Listeners

Rule: Never use raw .onload, .onclick, or addEventListener() directly. Always use addDisposableListener().