checkpoint==2.0.12

langgraph-checkpoint 2.0.12

Summary of Changes

• Renamed MemorySaver to InMemorySaver while keeping backward compatibility through an alias (#2044)
• Added support for embedding model initialization via provider strings (e.g., "openai:text-embedding-3-small") (#3317)
• Fixed parent configuration formatting in the checkpoint saver implementation (#2044)

Detailed Changes

langgraph.checkpoint.memory.InMemorySaver

• Renamed class from MemorySaver to InMemorySaver for better naming consistency (#2044)
• Kept backward compatibility by adding MemorySaver = InMemorySaver alias
• Updated return type annotations in __enter__ and __aenter__ methods to reflect the new class name
• Improved formatting of the parent_config parameter in multiple methods for better readability and maintainability

langgraph.checkpoint.memory.MemorySaver

• Now an alias to InMemorySaver for backward compatibility (#2044)

langgraph.store.base.IndexConfig

• Extended the embed parameter to accept string values representing provider identifiers (#3317)
• Added documentation for the new string provider format: "provider:model" (e.g., "openai:text-embedding-3-small")

langgraph.store.base.embed.ensure_embeddings

• Added support for initializing embeddings from provider strings (#3317)
• Added clear error messages when trying to use string providers without the required dependencies
• Requires langchain>=0.3.9 and the appropriate provider package when using string initialization
• Added documentation and examples for the new string initialization format