next/dist/esm/server/app-render/wait-for-response.js

The React Framework

/**
 * Waits for a Node response to finish normally. Returns false when the
 * connection closes before the response has finished.
 */ export function waitForResponseToFinish(response) {
    if (response.writableFinished) {
        return Promise.resolve(true);
    }
    if (response.destroyed) {
        return Promise.resolve(false);
    }
    return new Promise((resolve)=>{
        function cleanup() {
            response.off('finish', onFinish);
            response.off('close', onClose);
        }
        function onFinish() {
            cleanup();
            resolve(true);
        }
        function onClose() {
            cleanup();
            resolve(response.writableFinished);
        }
        response.on('finish', onFinish);
        response.on('close', onClose);
    });
}

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