Reading emails via pop3 or imap from localhost crashes node-red

Hi all,

I've got a citadel email server running on my raspberry pi along with Node-Red running Pi OS Lite.

Node-Red v3.0.0
Node.js v18.6.0
node-red-email v1.15.1

Every time I try to read email from the local Citadel server via pop3 or imap node-red hard crashes with this error:

15 Jul 21:36:25 - [error] TypeError: Cannot set property errored of #<Readable> which has only a getter
    at new MessageSplitter (/home/papershow/.node-red/node_modules/node-red-node-email/node_modules/mailsplit/lib/message-splitter.js:28:22)
    at new MailParser (/home/papershow/.node-red/node_modules/node-red-node-email/node_modules/mailparser/lib/mail-parser.js:132:25)
    at module.exports (/home/papershow/.node-red/node_modules/node-red-node-email/node_modules/mailparser/lib/simple-parser.js:29:18)
    at POP3Client.<anonymous> (/home/papershow/.node-red/node_modules/node-red-node-email/61-email.js:320:21)
    at POP3Client.emit (node:events:513:28)
    at /home/papershow/.node-red/node_modules/node-red-node-email/poplib.js:721:18
    at Socket.onData (/home/papershow/.node-red/node_modules/node-red-node-email/poplib.js:239:17)
    at Socket.emit (node:events:513:28)
    at addChunk (node:internal/streams/readable:324:12)
    at readableAddChunk (node:internal/streams/readable:297:9)

This issue does not occur on node.js v14.20.0 or v16.x. This issue was resolved on the forums by downgrading my node.js version but it was suggested I post it here for futureproofing.

Thanks,
Toby

Reproduce the crash with Node.js 18 using the node-red-node-email path shown in the trace. Start with 61-email.js and follow the POP3 flow through poplib.js, mailparser, and mailsplit/lib/message-splitter.js; compare behavior with Node.js 14 or 16. Done means reading mail from the local POP3 or IMAP server no longer crashes on Node.js 18.