langgraph 0.1.11

Summary of Changes

• Fixed initialization of checkpoint_pending_writes in PregelLoop to ensure it's always a list, never None (#1106)
• Fixed validation error in StateGraph.add_edge() to correctly prevent START node from being an end node
• Improved type annotations in StateGraph.compile() to correctly indicate it returns a CompiledStateGraph

Detailed Changes

langgraph.pregel.loop.PregelLoop

• Changed checkpoint_pending_writes type from Optional[List[PendingWrite]] to List[PendingWrite]
• Modified __enter__ and __aenter__ methods to ensure checkpoint_pending_writes is always a list by defaulting to an empty list when saved.pending_writes is None (#1106)

langgraph.graph.state.StateGraph

• Fixed validation in add_edge() method to correctly check that START cannot be an end node (instead of incorrectly checking that END cannot be an end node)
• Updated return type annotation in compile() method from CompiledGraph to "CompiledStateGraph" to accurately reflect the actual return type