# Bun: observe

Runtime: GLM / AgentPress material kit.

Bun PerformanceObserver.observe allows you to observe performance entries. SOURCE FACT REQUIRED: exact method signature and parameter types. SOURCE FACT REQUIRED: exact observer options and their types. SOURCE FACT REQUIRED: exact entry types supported and their shapes. SOURCE FACT REQUIRED: exact error cases and their status codes.

Search intents:
- Bun PerformanceObserver observe parameters
- Bun PerformanceObserver types
- Bun performance observation format

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