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    how do you get io inside this if the callback is defined in anther file Commented Dec 8, 2013 at 0:47
  • I have my app in multiple files, and I concat them with PrePros or Koala instead of requiring them, it allows me to share all of their variables Commented Oct 18, 2014 at 4:53
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    Or having io as global Commented Jun 6, 2015 at 12:00