Failed to handle key ` `: Cannot read properties of undefined (reading 'lineAt')
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Description
To Reproduce
Steps to reproduce the behavior:
- Go to '...'
- Click on '....'
- Scroll down to '....'
- See error
VSCodeVim version: 1.21.18
Stack trace
TypeError: Failed to handle key ` `: Cannot read properties of undefined (reading 'lineAt')
at Oo.isLineEnd (c:\Users\Kotresh\.vscode\extensions\vscodevim.vim-1.32.1\out\extension.js:2:794300)
at map (c:\Users\Kotresh\.vscode\extensions\vscodevim-sneak-fork.vscodevim-sneak-fork-1.21.18\src\mode\modeHandler.ts:811:22)
at Array.map (<anonymous>)
at D.actionToRecord [as runAction] (c:\Users\Kotresh\.vscode\extensions\vscodevim-sneak-fork.vscodevim-sneak-fork-1.21.18\src\mode\modeHandler.ts:808:53)
at D.handledAsAction [as handleKeyAsAnAction] (c:\Users\Kotresh\.vscode\extensions\vscodevim-sneak-fork.vscodevim-sneak-fork-1.21.18\src\mode\modeHandler.ts:664:43)
at D.text [as handleKeyEvent] (c:\Users\Kotresh\.vscode\extensions\vscodevim-sneak-fork.vscodevim-sneak-fork-1.21.18\src\mode\modeHandler.ts:477:11)
at c:\Users\Kotresh\.vscode\extensions\vscodevim-sneak-fork.vscodevim-sneak-fork-1.21.18\extensionBase.ts:370:73
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with src/mode/modeHandler.ts around lines 808-811, then trace the call from extensionBase.ts:370 and the isLineEnd stack-frame reference. Reproduce the failure by handling the space key in the reported VSCodeVim/sneak-fork setup and inspect which value is undefined. Done means the key no longer throws this lineAt error, with regression coverage if the surrounding tests expose a suitable entry point.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100