Description

The process_partial_response and async_process_partial_response functions have incomplete type annotations for the event parameter. Currently it's typed as dict, but since Lambda events are JSON objects, it should be typed as dict[str, Any] for better type checking.

Impact

When using strict type checkers like pyright, the current implementation causes type errors:

error: Type of "process_partial_response" is partially unknown
  Type of "process_partial_response" is "(event: dict[Unknown, Unknown], ...)" (reportUnknownVariableType)

With dict[str, Any], the type checker correctly infers the event type.

Additional Context

• AWS Lambda events are always JSON objects, which in Python are represented as dict[str, Any]
• This change improves type safety without breaking existing code
• The same pattern is used elsewhere in the codebase for Lambda event parameters