microsoft / microsoft/monaco-editor

[Bug] Uncaught Error: Illegal value for lineNumber

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#4,852 3 comments 2 reactions 0 assignees View on GitHub

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Dominant language
JavaScript
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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?
Monaco Editor Playground Link

No response

Monaco Editor Playground Code
var diffEditor = monaco.editor.createDiffEditor(document.getElementById('container'));
diffEditor.setModel({
    original: monaco.editor.createModel("123\n2", 'javascript'),
    modified: monaco.editor.createModel("123", 'javascript')
});
Reproduction Steps

edit the origin content

Actual (Problematic) Behavior

Image
This error popped up when I modified the original content

Expected Behavior

No response

Additional Context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Monaco Editor Playground using the supplied diff-editor code, then edit the original model content to reproduce the Illegal value for lineNumber error. The issue does not name a source file or test; done means the reported edit no longer produces the uncaught error.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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