[wp-trac] [WordPress Trac] #52851: Update the `element-closest` polyfill

[WordPress Trac]

#52851: Update the `element-closest` polyfill
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 Reporter:  desrosj                  |       Owner:  (none)
     Type:  enhancement              |      Status:  new
 Priority:  normal                   |   Milestone:  5.8
Component:  External Libraries       |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
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Comment (by Hareesh Pillai):

 Patch looks good and the QUnit tests have all passed. Based on my testing
 of a few areas that use `.closest`, it seems to work fine.

 I suggest that we commit this patch so that we could catch any edge cases.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52851#comment:3>
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