@langchain/core/dist/runnables/wrappers.js

Core LangChain.js abstractions and schemas

import { IterableReadableStream } from "../utils/stream.js";
export function convertToHttpEventStream(stream) {
    const encoder = new TextEncoder();
    const finalStream = new ReadableStream({
        async start(controller) {
            for await (const chunk of stream) {
                controller.enqueue(encoder.encode(`event: data\ndata: ${JSON.stringify(chunk)}\n\n`));
            }
            controller.enqueue(encoder.encode("event: end\n\n"));
            controller.close();
        },
    });
    return IterableReadableStream.fromReadableStream(finalStream);
}