nodeJS 版本 18.15.0

目前寫的部分

const Readline = require('@serialport/parser-readline')
var SerialPort = require("serialport");

const parser = new Readline(); 

var COMPort = "Com3";
var port = new SerialPort(COMPort, {baudRate: 9600}).setEncoding('utf8'); 

port.on("open", (err) => {  
    console.log('serial port open'); //成功連接時印出port open
    if(err){
        console.log("no serial device found")//失敗時印出 device not found
    }
  },20);
port.pipe(parser)
parser.on('data', line =>{
    console.log(line)
})

這兩行都會是 new的n 錯誤
const parser = new Readline();
var port = new SerialPort(COMPort, {baudRate: 9600}).setEncoding('utf8');

const parser = new Readline(); 
               ^
ReferenceError: Readline is not constructor

var port = new SerialPort(COMPort, {baudRate: 9600}).setEncoding('utf8');
           ^
ReferenceError: SerialPort is not constructor   

npm install serialport
npm install express
目前只有用這兩個