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@langchain/langgraph-checkpoint

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Library with base interfaces for LangGraph checkpoint savers.

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import type { RunnableConfig } from "@langchain/core/runnables"; import { BaseCheckpointSaver, Checkpoint, CheckpointListOptions, CheckpointTuple } from "./base.js"; import { SerializerProtocol } from "./serde/base.js"; import { CheckpointMetadata, PendingWrite } from "./types.js"; import { SendProtocol } from "./serde/types.js"; export declare class MemorySaver extends BaseCheckpointSaver { storage: Record<string, Record<string, Record<string, [Uint8Array, Uint8Array, string | undefined]>>>; writes: Record<string, Record<string, [string, string, Uint8Array]>>; constructor(serde?: SerializerProtocol); _getPendingSends(threadId: string, checkpointNs: string, parentCheckpointId?: string): Promise<SendProtocol[]>; getTuple(config: RunnableConfig): Promise<CheckpointTuple | undefined>; list(config: RunnableConfig, options?: CheckpointListOptions): AsyncGenerator<CheckpointTuple>; put(config: RunnableConfig, checkpoint: Checkpoint, metadata: CheckpointMetadata): Promise<RunnableConfig>; putWrites(config: RunnableConfig, writes: PendingWrite[], taskId: string): Promise<void>; }