REPL in editor mode crashes during tab completion

[cola119]

Version

v18.4.0

Platform

No response

Subsystem

No response

What steps will reproduce the bug?

$ node
Welcome to Node.js v18.4.0.
Type ".help" for more information.
> .editor
// Entering editor mode (Ctrl+D to finish, Ctrl+C to cancel)
a

And then press TAB

How often does it reproduce? Is there a required condition?

always

What is the expected behavior?

Works without problems.

What do you see instead?

> .editor
// Entering editor mode (Ctrl+D to finish, Ctrl+C to cancel)
anode:internal/readline/emitKeypressEvents:74
            throw err;
            ^

TypeError: Cannot read properties of undefined (reading 'length')
    at commonPrefix (node:internal/readline/utils:375:27)
    at [_tabCompleter] (node:internal/readline/interface:670:20)
    at node:readline:448:24
    at node:repl:1606:3
    at completionGroupsLoaded (node:repl:1592:5)
    at REPLServer.complete (node:repl:1489:7)
    at REPLServer.completer (node:repl:762:5)
    at Interface._tabComplete (node:readline:440:8)
    at [_ttyWrite] [as _ttyWrite] (node:internal/readline/interface:1319:31)
    at REPLServer.self._ttyWrite (node:repl:1029:11)

Node.js v18.4.0

Additional information

Now I'm working on this. I'll send a PR in later.