microsoft / microsoft/monaco-editor
[Bug] Illegal value for lineNumber
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- Dominant language
- JavaScript
- Stars
- 46.8k
- Forks
- 4.1k
- Avg merge
- 17h 58m
- Merged PRs (30d)
- 1
Description
Reproducible in vscode.dev or in VS Code Desktop?
- Not reproducible in vscode.dev or VS Code Desktop
Reproducible in the monaco editor playground?
- Not reproducible in the monaco editor playground
Monaco Editor Playground Link
When renderSideBySide: true, enable differential comparison. When the maximum number of rows after merging is less than the number of rows before merging, report an error: Illegal value for lineNumber
Monaco Editor Playground Code
Reproduction Steps
No response
Actual (Problematic) Behavior
No response
Expected Behavior
No response
Additional Context
No response
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 by reproducing the issue in the Monaco Editor Playground with renderSideBySide enabled and differential comparison turned on, as described. The payload names no source file, test, or reproduction code, so locate the diff-editor path that reports “Illegal value for lineNumber.” Done means the reported error no longer occurs when merged rows are fewer than the original rows.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100