Unexpected error log `Unexpected token =>`

[brunolnetto]

Hi,

I use fixmyjs hook to fix my js files (Badum tss). It complains on the following [line]:(https://github.com/trouchet/sappio/blob/0226dab521e1a1b8f28719e4c3e0430eccd4cfeb/src/core/utils/error-handler.js#L64)

File: /code/src/core/utils/error-handler.js
Error: Line 64: Unexpected token =>

What do I do wrong? Weird.