[wp-trac] [WordPress Trac] #59115: Use defer loading strategy for block view scripts

[WordPress Trac]

#59115: Use defer loading strategy for block view scripts
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 Reporter:  westonruter   |       Owner:  westonruter
     Type:  defect (bug)  |      Status:  closed
 Priority:  normal        |   Milestone:  6.4
Component:  Editor        |     Version:  trunk
 Severity:  normal        |  Resolution:  fixed
 Keywords:  has-patch     |     Focuses:  javascript, performance
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Comment (by gziolo):

 Noting that with [56398], the `defer` strategy is going to be used with
 `editorScript`, `script`, and `viewScript`. In the case of `editorScript`,
 the dependencies aren't using defer like `wp-block` or `wp-block-editor`,
 so it will probably fall back to the legacy handling.

 It might be fine as is, but we will have to watch whether 3rd party blocks
 encounter any issues. If the intention was to apply that only to
 `viewScript` then we need to add a check against `$field_name` in the
 code.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59115#comment:5>
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