function handleDownladCallback()

in script/download_lib.js [108:123]

• 14 lines of code
• 4 McCabe index (conditional complexity)

        function handleDownladCallback(err) {
            if(err) {
                console.error(`[rocketmq sdk] [error] error occurred while downloading [${url}] to [${filename}].`);
                console.error(err.stack);
                process.exit(4);
            }

            writeTimes++;
            destroy(resp.res);

            console.log(`[rocketmq sdk] [info] downloaded library [${url}].`);
            if(writeTimes === urls.length) {
                console.log("[rocketmq sdk] [info] all libraries have been written to disk.");
                process.exit(0);
            }
        }