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useStream hook: stale client closure causes 403 errors after token refresh

Status: Open.

#1840 In langchain-ai/langgraphjs;

· EUN-GYUL opened on Jan 5, 2026

SDK message types don't support @langchain/core v1 ContentBlock formats

Status: Open.

#1838 In langchain-ai/langgraphjs;

· mingxuan-he opened on Jan 3, 2026

StreamMessagesHandler throws ERR_INVALID_STATE when stream is closed

Status: Open.

#1837 In langchain-ai/langgraphjs;

· nullRefErr opened on Dec 31, 2025

What format data does <code>AIMessage</code> has to have to give <code>contentBlock</code> with <code>{type:"reasoning"}</code>

Status: Open.

#1836 In langchain-ai/langgraphjs;

· DevDeepakBhattarai opened on Dec 29, 2025

Cannot extract Reasoning tokens from <code>ChatGoogleGenerativeAI</code>

Status: Open.

#1835 In langchain-ai/langgraphjs;

· DevDeepakBhattarai opened on Dec 29, 2025

langgraph-api Needs to Support ts-node-esm

Status: Open.

#1834 In langchain-ai/langgraphjs;

· liSong5713 opened on Dec 29, 2025

Errors thrown in tools are ignored in streamEvents (using ToolNode and DynamicStructuredTool)

Status: Open.

#1831 In langchain-ai/langgraphjs;

· danikenan opened on Dec 20, 2025

Bug: "Channel already exists with a different type" error when multiple StateGraphs share field schemas

Status: Open.

#1820 In langchain-ai/langgraphjs;

· Abdurihim opened on Dec 14, 2025

checkpoint_blob versions not calculated globally

Status: Open.

#1812 In langchain-ai/langgraphjs;

· carlosbaraza opened on Dec 6, 2025

PostgresSaver thows multiple errors with createAgent

Status: Open.

#1808 In langchain-ai/langgraphjs;

· mvertopoulos opened on Dec 3, 2025

Cannot create stateless Cron

Status: Open.

#1797 In langchain-ai/langgraphjs;

· amitchaudharyc opened on Nov 26, 2025

Graph jumped directly to the end node when I resume a graph after updateState

Status: Open.

#1796 In langchain-ai/langgraphjs;

· loverara opened on Nov 26, 2025