src/vs/workbench/api/common/extHostTextEditor.ts/ExtHostTextEditorOptions/_validateInsertSpaces
class ExtHostTextEditorOptions:	private _validateInsertSpaces(value: boolean | string): boolean | 'auto' {
		if (value === 'auto') {
			return 'auto';
		}
		return (value === 'false' ? false : Boolean(value));
	}