langchain-ai/langchainjs @langchain/openai@1.4.6 on GitHub

#10902 229a7ad Thanks @christian-bromann! - fix(openai): preserve v1 assistant tool calls
#10895 36fb0ef Thanks @BertBR! - fix(openai): guard bare JSON.parse in Responses API converter against trailing non-whitespace characters
convertResponsesDeltaToChatGenerationChunk previously called JSON.parse(msg.text) directly when response.text.format.type === "json_schema". Some models (observed with gpt-5-mini on service_tier: "auto") intermittently emit trailing non-whitespace characters (extra tokens, control characters) after a valid JSON object, causing a SyntaxError that propagates as an unhandled exception and kills the entire streaming response mid-flight. The parse is now wrapped in a try/catch: on failure, additional_kwargs.parsed is left undefined, the stream completes normally, and the existing withStructuredOutput pipeline handles the typed failure — includeRaw: true returns { raw, parsed: null } via its withFallbacks wrapper, includeRaw: false throws a typed OutputParserException that the caller can catch and retry. Closes #10894.