checkpointpostgres==1.0.8

langgraph-checkpoint-postgres 1.0.8

Summary of Changes

• Enhanced type annotations throughout the package for better type safety and developer experience #1815
• Fixed bug in migration handling when no previous migrations exist #1815
• Added safety check in AsyncPostgresSaver to prevent blocking when called from the main thread #1815
• Updated dependency on langgraph-checkpoint to version 1.0.11 #1815

Detailed Changes

langgraph.checkpoint.postgres.PostgresSaver

• Improved type annotations with new Conn type alias for connection parameters
• Fixed bug in setup() method to properly handle case when no migration rows exist
• Changed parameter types from List to more flexible Sequence for better API compatibility

langgraph.checkpoint.postgres.aio.AsyncPostgresSaver

• Improved type annotations with new Conn type alias for async connection parameters
• Fixed bug in setup() method to properly handle case when no migration rows exist
• Added thread safety check in get_tuple() to raise a clear error message when called from the main thread which would block execution
• Changed parameter types from List to more flexible Sequence for better API compatibility

langgraph.checkpoint.postgres.base.BasePostgresSaver

• Enhanced generic type parameters, specifying BasePostgresSaver[str]
• Improved type hints with more specific types like ChannelVersions and CheckpointMetadata
• Added better return type annotations for improved type checking