[wp-trac] [WordPress Trac] #53856: Check if the 'mirroring' property exists in media-views.js

[WordPress Trac]

#53856: Check if the 'mirroring' property exists in media-views.js
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 Reporter:  MMDeveloper              |       Owner:  (none)
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  Awaiting Review
Component:  Media                    |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch reporter-      |     Focuses:  javascript,
  feedback                           |  administration
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Comment (by MMDeveloper):

 I think its to do with legacy software. I'm on WordPress 5.8 but the theme
 has not been updated in many years. So you may not necessarily care. On
 WordPress Visual editor, I click edit gallery and when I see WordPress
 Media Gallery, it produces this error in the Google Developer Tools
 console.

 I think it could be a legacy issue, but considering its just checking if a
 variable exists or not, I didn't think it was a big deal for you guys to
 implement in next build.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53856#comment:6>
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