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random TypeError and crash in REPL when entering text (v24.4.1) #59178
Description
Version
v24.4.1
Platform
Microsoft Windows NT 10.0.26100.0 x64
Subsystem
No response
What steps will reproduce the bug?
Starting node in REPL mode and entering a few characters in the terminal randomly crashes the REPL with the following error:
node:internal/readline/emitKeypressEvents:74
throw err;
^
TypeError: Cannot read properties of null (reading 'start')
at findExpressionCompleteTarget (node:repl:1722:68)
at REPLServer.complete (node:repl:1487:55)
at REPLServer.completer (node:repl:792:5)
at showCompletionPreview (node:internal/repl/utils:233:10)
at showPreview (node:internal/repl/utils:389:7)
at REPLServer.self._ttyWrite (node:repl:1037:9)
at ReadStream.onkeypress (node:internal/readline/interface:284:20)
at ReadStream.emit (node:events:507:28)
at ReadStream.emit (node:domain:489:12)
at emitKeys (node:internal/readline/utils:371:14)
How often does it reproduce? Is there a required condition?
I can constantly reproduce this behaviour by simply entering the text let a, the REPL itself does not even let me continue typing, it just crashes.
What is the expected behavior? Why is that the expected behavior?
The expected behavior would be to not crash after entering the above text...
What do you see instead?
This is a complete printout of the bug right from the first line after starting the REPL by typing node from the command line. I am typing the text let a and the following output gets printed instantly.
PS C:\Users\XXX> node
Welcome to Node.js v24.4.1.
Type ".help" for more information.
> let anode:internal/readline/emitKeypressEvents:74
throw err;
^
TypeError: Cannot read properties of null (reading 'start')
at findExpressionCompleteTarget (node:repl:1722:68)
at REPLServer.complete (node:repl:1487:55)
at REPLServer.completer (node:repl:792:5)
at showCompletionPreview (node:internal/repl/utils:233:10)
at showPreview (node:internal/repl/utils:389:7)
at REPLServer.self._ttyWrite (node:repl:1037:9)
at ReadStream.onkeypress (node:internal/readline/interface:284:20)
at ReadStream.emit (node:events:507:28)
at ReadStream.emit (node:domain:489:12)
at emitKeys (node:internal/readline/utils:371:14)
Node.js v24.4.1
Additional information
No response
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