email-in node crashed node-red

[andysc]

Which node are you reporting and issue on?

This only happened once, so I'm sorry it's hard to reproduce.
I have a mail-in node, configured like this:

One time (I might have been on a dodgy internet connection on a train), node-red crashed with this error message:

[red] Uncaught Exception:
17 Apr 09:29:41 - [error] TypeError: Cannot read properties of undefined (reading 'type')
    at Parser.<anonymous> (/Users/andysc/.node-red/node_modules/node-red-node-email/node_modules/imap/lib/Connection.js:227:29)
    at Parser.emit (node:events:519:28)
    at Parser._resContinue (/Users/andysc/.node-red/node_modules/node-red-node-email/node_modules/imap/lib/Parser.js:296:8)
    at Parser._parse (/Users/andysc/.node-red/node_modules/node-red-node-email/node_modules/imap/lib/Parser.js:141:16)
    at Parser._tryread (/Users/andysc/.node-red/node_modules/node-red-node-email/node_modules/imap/lib/Parser.js:82:15)
    at Parser._cbReadable (/Users/andysc/.node-red/node_modules/node-red-node-email/node_modules/imap/lib/Parser.js:53:12)
    at TLSSocket.emit (node:events:519:28)
    at emitReadable_ (node:internal/streams/readable:834:12)
    at onEofChunk (node:internal/streams/readable:812:5)
    at readableAddChunkPushByteMode (node:internal/streams/readable:466:5)
    at Readable.push (node:internal/streams/readable:392:5)
    at TLSWrap.onStreamRead (node:internal/stream_base_commons:231:12)
    at Socket.ondata (node:internal/js_stream_socket:79:22)
    at Socket.emit (node:events:519:28)
    at addChunk (node:internal/streams/readable:561:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)

What are the steps to reproduce?

As mentioned, hard to reproduce - it only happened once - but it was fetching whilst on an iffy wifi connection.

What happens?

Node-red crashed with an uncaught exception.

What did you expect to happen?

Error conditions to be handled gracefully and node-red to continue running.

Example flow

email-in node, configured as shown above, linked to a debug node.

Environment

• Node-RED version: 4.1.0
• Node.js version: v22.19.0
• npm version: 11.6.0
• Platform/OS: Mac/OS
• Browser: Safari

[hardillb]

What version of the node-red-node-email please

[andysc]

5.2.2 - installed this week :)

[hardillb]

The whole stacktrace is in the imap library and appears to be triggered from a network read, so async.

Will need to look at the imap library to see if it has a generic error handler that can be configured, otherwise it's an uncaught exception, which NR deliberately exits on as it has no way to know what state things are in.

Will try and find some time to poke at the imap lib.

[andysc]

OK - thanks Ben