@yoyo-org/progressive-json/dist/src/utils/server-sse.js

Stream and render JSON data as it arrives - perfect for AI responses, large datasets, and real-time updates

export function writeSSEHeaders(res) {
    res.writeHead(200, {
        "Content-Type": "text/event-stream",
        "Cache-Control": "no-cache",
        "Connection": "keep-alive",
        "Access-Control-Allow-Origin": "*",
        "Access-Control-Allow-Headers": "Content-Type, Authorization",
    });
}
export function writeSSE(res) {
    return (data) => {
        const message = typeof data === "string" ? data : JSON.stringify(data);
        res.write(`data: ${message}\n\n`);
    };
}
export function writeSSEEvent(res, event, data) {
    res.write(`event: ${event}\n`);
    res.write(`data: ${JSON.stringify(data)}\n\n`);
}
export function closeSSE(res) {
    res.write("data: [DONE]\n\n");
    res.end();
}