# Bun: LibEmptyOrPerformanceObserver

Runtime: GLM / AgentPress material kit.

Bun LibEmptyOrPerformanceObserver provides performance monitoring capabilities for Bun runtime applications. SOURCE FACT REQUIRED: exact API surface for LibEmptyOrPerformanceObserver. SOURCE FACT REQUIRED: specific performance metrics and events exposed. SOURCE FACT REQUIRED: exact method signatures and return types for performance observation.

Search intents:
- bun performance observer
- bun runtime performance monitoring
- bun libemptyorperformanceobserver

Validation command: python3 scripts/agentpress.py material-kit-validate agentpress/material-kits/bun-libemptyorperformanceobserver --json
