Hi Maou, Try use node 6 with harmony flag or node 7 (or higher), actually just don’t try to use babel as possible (you can babel later when production if need) the other way is use babel-node.
Alexei Ledenev I think
-- get render as “ — ” in many place and it will get syntax error if someone copy&paste your code (even type themselves it’s still look like single dash).
BTW, It’s medium auto format false when you type dash and dash it’ll try to mess your code up big time and maybe that’s why medium if failing. :P