type alias PerformanceObserverCallback
Usage in Deno
```typescript import { type PerformanceObserverCallback } from "node:node__perf_hooks.d.ts"; ```(list: PerformanceObserverEntryList,observer: PerformanceObserver,) => void
(list: PerformanceObserverEntryList,observer: PerformanceObserver,) => void