Files that are requireed or useed need to return true. So the last statement in your file should evaluate to true e.g

package foo;
# code here
1; # or anything else that evaluates to true
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Also are you sure you know what your doing with ref($type) || $type as it severely indicates cargo cult programming which is rather a contentious issue around here. But if you know exactly what you're doing then best of luck to you :)
HTH

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broquaint