[wp-trac] [WordPress Trac] #59441: Use instanceof in block_has_support

[WordPress Trac]

#59441: Use instanceof in block_has_support
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 Reporter:  spacedmonkey  |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  6.4
Component:  Editor        |    Version:  5.8
 Severity:  normal        |   Keywords:
  Focuses:  performance   |
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 The function block_has_support can be called around 4000 times on a page
 load. The `property_exists` check, can be expensive. Replaces it with
 `instanceof`, is much faster.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59441>
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