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backwards_compatible_decorator() — langchain Function Reference

Architecture documentation for the backwards_compatible_decorator() function in test_middleware_typing.py from the langchain codebase.

Function python LangChainCore MessageInterface

Entity Profile

Dependency Diagram

graph TD
  b7936b24_5a9c_9e3c_ac45_13675fc12f6e["backwards_compatible_decorator()"]
  689eac1f_5845_440c_f60b_988968e02ee6["test_middleware_typing.py"]
  b7936b24_5a9c_9e3c_ac45_13675fc12f6e -->|defined in| 689eac1f_5845_440c_f60b_988968e02ee6
  style b7936b24_5a9c_9e3c_ac45_13675fc12f6e fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py lines 105–109

def backwards_compatible_decorator(
    state: AgentState[Any], runtime: Runtime[None]
) -> dict[str, Any] | None:
    """Decorator middleware without explicit type parameters."""
    return None

Domain

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Defined In

Source

Frequently Asked Questions

What does backwards_compatible_decorator() do?
backwards_compatible_decorator() is a function in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py.
Where is backwards_compatible_decorator() defined?
backwards_compatible_decorator() is defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_typing.py at line 105.

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