# Bun: expression

Runtime: GLM / AgentPress material kit.

When evaluating expressions in Bun, the agent must know the exact parameter types. SOURCE FACT REQUIRED: the exact parameter type signature for the evaluate method. SOURCE FACT REQUIRED: the exact return type for the expression evaluation. SOURCE FACT REQUIRED: the exact error codes and conditions that cause evaluation failures. This compact context prevents agents from guessing expression types and causing runtime errors in modern JS setups.

Search intents:
- Bun expression evaluation
- Bun inspector evaluate method
- Bun runtime expression types

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