puppetlabs-iis : warning already initialized constant

e_Basic Info_
Module Version: 4.2.0
Puppet Version: 2017.3
OS Name/Version: Windows 2012 R2

While running puppet against a windows server with the puppetlabs-iis module installed facter provides the following warnings:

C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:7: warning: already initialized constant ACCESS_TYPE
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:7: warning: previous definition of ACCESS_TYPE was here
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:8: warning: already initialized constant HKLM
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:8: warning: previous definition of HKLM was here
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:9: warning: already initialized constant REG_PATH
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:9: warning: previous definition of REG_PATH was here
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:10: warning: already initialized constant REG_KEY
C:/Source/puppetlabs-iis/iis/lib/facter/iis_version.rb:10: warning: previous definition of REG_KEY was here

Desired Behavior:
I would assume there to be no warnings

Actual Behavior:
Warnings are provided for all variables being set in iis_version.rb

Attached screenshot to issue