[MacPorts] #55531: npm5 @5.5.1: update to 5.6.0

[MacPorts]

#55531: npm5 @5.5.1: update to 5.6.0
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  Reporter:  l2dy    |      Owner:  light@…
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  npm5    |
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Comment (by l2dy):

 Replying to [comment:2 mmpestorich]:
 > Here's a patch that updates the version to 5.6.0 and modifies the
 macports specific patch to lib/update.js

 This new patch would return with `toInstall[key].what = []` if
 `toInstall[key]` doesn't exist, while the original code will return with
 `toInstall[key].what = [ww.what]`. Is this change intentional?

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Ticket URL: <https://trac.macports.org/ticket/55531#comment:3>
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