async function killport(port) {
    $logger.info(`kill process on port ${port}`);
    const util = require('util');
    const exec = util.promisify(require('child_process').exec);

    try {
        // 查 PID
        let { stdout : stdout1 } = await exec(`netstat -ano | findstr "LISTENING" | findstr /C:":${port} "`)

        const output = stdout1.split('\n');
        const outputLines = output[0].trim().split(' ')
        const pid = outputLines[outputLines.length - 1];
        $logger.debug(`绑定端口号 ${port} 的进程 PID=${pid}`)


        // 查进程信息
        let { stdout : stdout2 } = await exec(`tasklist /FI "PID eq ${pid}" /V /FO CSV`);
        const tasklistOutput = stdout2.trim();
        const processInfo = tasklistOutput.split('\n')[1].split('","');
        const processName = processInfo[0].slice(1) ;

        $logger.info(`绑定端口号=${port}; 进程 PID=${pid}; 程序=${processName};`);

        // Kill 进程
        await exec(`taskkill /PID ${pid} /F`)

    } catch (e) {
        if ( 1 === e.code )  {
            $logger.error("此端口未被使用，或清理进程失败。")
            return
        }
    }
}


module.exports = {
    killport
}