In the below code, Keydown is not executing the console for backspace and delete.

 editor.getControl().onKeyDown(e => {
            console.log('e', e)
            editor.getControl().getSelections().findIndex(val => {
                if (val.startLineNumber === 1 || val.startLineNumber === editor.getControl().getModel().getLineCount()) {
                    e.stopPropagation()
                    e.preventDefault() // for Ctrl+C, Ctrl+V
                }
            })
        })