dom-churn-profiler

What problem does it solve?

Identify the DOM subtrees responsible for excessive mutations and visual jank by instrumenting MutationObserver and Long Animation Frame data, enabling precise root-cause analysis of performance issues.

Core Features & Use Cases

• Inject MutationObserver and PerformanceObserver-based instrumentation to record mutations, timestamps, and frame data.
• Harvest and correlate DOM churn with long animation frames to pinpoint destabilizing subtree(s).
• Generate concise top-subtree reports and frame-level correlations to guide targeted optimizations for React, Vue, or vanilla apps.

Quick Start

Install the DOM churn profiler on the target page, perform representative interactions to generate churn, then harvest and review the top mutating subtrees.