How to set the maximum line of Theia editor code

[zx616456607]

I am using EditorManager, how to set the maximum number of lines of editor code, such as 9999, beyond the maximum number of lines cannot be written

[msujew]

Hey @zx616456607,

The monaco editor doesn't expose any way to limit the number of lines users can write. You might want to raise this as an issue on the monaco/vscode issue board.

Aside from that, you might be able to get away to listen to the onDocumentContentChanged event of each editor and simply call undo on any change that increases the lines of code after 9999 LoC have been reached.