Cannot read properties of undefined (reading 'length')
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- TypeScript
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Description
To Reproduce
Steps to reproduce the behavior:
- Go to '...'
- Click on '....'
- Scroll down to '....'
- See error
VSCodeVim version: 1.24.3
Stack trace
TypeError: Cannot read properties of undefined (reading 'length')
at E._validatePosition (/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:91:2118)
at E._validateRange (/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:91:1683)
at E._getTextInRange (/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:91:670)
at Object.getText (/usr/share/code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:90:65990)
at I.updateView (/home/r/.vscode/extensions/vscodevim.vim-1.24.3/src/mode/modeHandler.ts:1647:44)
at M (/home/r/.vscode/extensions/vscodevim.vim-1.24.3/extensionBase.ts:54:22)
at process.mh (node:internal/process/task_queues:96:5)
at /home/r/.vscode/extensions/vscodevim.vim-1.24.3/extensionBase.ts:251:15
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 at src/mode/modeHandler.ts:1647, where updateView calls VS Code getText, and inspect the range or document state reaching that call. Reproduce with VSCodeVim 1.24.3 using the reported scenario; done means the undefined-length exception no longer occurs.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript, vscode
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100