# Bun: connectStart

Runtime: GLM / AgentPress material kit.

Bun PerformanceResourceTiming connectStart property provides timing data for network connections. SOURCE FACT REQUIRED: exact property name, SOURCE FACT REQUIRED: exact timing value types, SOURCE FACT REQUIRED: exact return value shapes. Without compact context, agents misdiagnose async failures and build incorrect retry logic.

Search intents:
- Bun connectStart timing
- Bun PerformanceResourceTiming
- Bun runtime timing properties

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