upgrade eslint and associated fixes

don't keep ie() by the way

src/editor/index.js

@@ -143,5 +143,4 @@ try { // try clause to avoid js to complain if XDOMAIN undefined
     // eslint-disable-next-line no-console
     console.info('xdomain config activated');
   }
-} catch (error) {
-}
+} catch (error) {}