src/vs/workbench/contrib/notebook/browser/view/cellParts/cellEditorOptions.ts/CellEditorOptions/_computeEditorOptions
class CellEditorOptions:	private _computeEditorOptions() {
		const renderLineNumbers = this.configurationService.getValue<'on' | 'off'>('notebook.lineNumbers') === 'on';
		const lineNumbers: LineNumbersType = renderLineNumbers ? 'on' : 'off';

		const value = this.base.value;

		if (value.lineNumbers !== lineNumbers) {
			return {
				...value,
				...{ lineNumbers }
			};
		} else {
			return Object.assign({}, value);
		}
	}