cloudflare/agents agents@0.3.9

on GitHub

Patch Changes

• #837 b11b9dd Thanks @threepointone! - Fix AgentWorkflow run() method not being called in production

  The run() method wrapper was being set as an instance property in the constructor, but Cloudflare's RPC system invokes methods from the prototype chain. This caused the initialization wrapper to be bypassed in production, resulting in _initAgent never being called.

  Changed to wrap the subclass prototype's run method directly with proper safeguards:

  • Uses Object.hasOwn() to only wrap prototypes that define their own run method (prevents double-wrapping inherited methods)
  • Uses a WeakSet to track wrapped prototypes (prevents re-wrapping on subsequent instantiations)
  • Uses an instance-level __agentInitCalled flag to prevent double initialization if super.run() is called from a subclass