chore(langchain_v1)!: Remove ToolNode from agents (#33250)

Remove ToolNode from agents namespace. It should only be present in tools

Author: eyurtsev

libs/langchain_v1/langchain/agents/__init__.py

@@ -1,10 +1,8 @@
 """langgraph.prebuilt exposes a higher-level API for creating and executing agents and tools."""
 
 from langchain.agents.react_agent import AgentState, create_agent
-from langchain.tools import ToolNode
 
 __all__ = [
     "AgentState",
-    "ToolNode",
     "create_agent",
 ]

libs/langchain_v1/tests/unit_tests/agents/test_react_agent.py

@@ -32,11 +32,11 @@
 
 from langchain.agents import (
     AgentState,
-    ToolNode,
     create_agent,
 )
 from langchain.agents.react_agent import _validate_chat_history
 from langchain.tools import (
+    ToolNode,
     InjectedState,
     InjectedStore,
 )

libs/langchain_v1/tests/unit_tests/agents/test_tool_node.py

@@ -32,10 +32,8 @@
 from pydantic.v1 import BaseModel as BaseModelV1
 from typing_extensions import TypedDict
 
-from langchain.agents import (
-    ToolNode,
-)
 from langchain.tools import (
+    ToolNode,
     InjectedState,
     InjectedStore,
 )