TypeError: SerialPort is not a constructor

[khunpoum]

SerialPort Version

10.3.0

Node Version

12.22.10 and 16.14.0 - the same results

Electron Version

No response

Platform

Ubuntu 20.04.3 LTS (5.4.0-99-generic)

Architecture

x64

Hardware or chipset of serialport

No response

What steps will reproduce the bug?

code test.js

const SerialPort = require('serialport');
const port = new SerialPort({path: '/dev/ttyUSB0', baudRate: 9600});

npm install serialport
[email protected] installed

ls /dev/ttyUSB*
/dev/ttyUSB0

What happens?

node test.js output:

const port = new SerialPort({path: '/dev/ttyUSB0', baudRate: 9600});
             ^

TypeError: SerialPort is not a constructor
    at Object.<anonymous> (/root/watchtemp/test-sp.js:2:14)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
    at internal/main/run_main_module.js:17:47

What should have happened?

there should be no errors

Additional information

No response

[khunpoum]

now this is working only in configuration with Node v10.x and [email protected]

[khunpoum]

how to make serialport work with modern versions of node like node v16.x ?

[bsh6308]

Please try this. Be careful the Upper case and lower case of ' { SerialPort } '

const { SerialPort } = require('serialport');
const comPort1 = new SerialPort({
path: 'COM4',
baudRate: 19200,
dataBits: 8,
stopBits: 1,
parity: 'none',
});

[reconbot]

I'd check out the v10 upgrade guide the exports from the package have changed.

[xupeng89]

but vite con't use require.import like this /@serialport/parser-byte-length/dist/index.js

[resilientboy]

Is it normal that i still have this issue after almost a year from this ?
I only added
import { SerialPort } from 'serialport';
it gives me a warning as
"Module "stream" has been externalized for browser compatibility. Cannot access "stream.Transform" in client code"
and an error as
"Uncaught TypeError: Class extends value undefined is not a constructor or null"

Node v18.13.0
serialport -v 10.5.0

[lyfxgd]

I met this bug in [email protected]

1. add .SerialPort after require line.
2. change the new serialp(port,{...}) constractor to new serialp({path:port,...})
   and it's solved! Thanks!

[xiaodahai]

Can you provide the complete code?

[Solvitwithus]

/*this should work for node 20 and serialport 12/
import { SerialPort } from 'serialport'
const port = new SerialPort({path:'COM9',baudRate: 2400 }, function (err) {

if (err) {
return console.log('Error: ', err.message)

}
})

port.write('main screen turn on', function(err) {
if (err) {
return console.log('Error on write: ', err.message)
}
console.log('message written')

port.write('333388');
})
setTimeout(function () {
// Clear the message
port.write(''); // Write an empty string or appropriate clear command
console.log('message cleared');
}, 3000);

[xiaodahai]

I've encountered the same problem. No matter which version it is, the same error occurs. Is this library actually usable or not?