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JavaScript@langchain/langgraph-checkpointInMemoryStoreput
Method●Since v0.0

put

Store or update an item.

Copy
put(
  namespace: string[],
  key: string,
  value: Record<string, any>,
  index: false | string[]
): Promise<void>

Parameters

NameTypeDescription
namespace*string[]

Hierarchical path for the item

key*string

Unique identifier within the namespace

value*Record<string, any>

Object containing the item's data

indexfalse | string[]

Optional indexing configuration

Example

Copy
// Simple storage
await store.put(["docs"], "report", { title: "Annual Report" });

// With specific field indexing
await store.put(
  ["docs"],
  "report",
  {
    title: "Q4 Report",
    chapters: [{ content: "..." }, { content: "..." }]
  },
  ["title", "chapters[*].content"]
);
View source on GitHub