[wp-trac] [WordPress Trac] #31789: Themes: allow a pre filter in `wp_prepare_themes_for_js()`

[WordPress Trac]

#31789: Themes: allow a pre filter in `wp_prepare_themes_for_js()`
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 Reporter:  mattwiebe    |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  4.2
Component:  Themes       |     Version:  trunk
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  performance
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Comment (by DrewAPicture):

 [attachment:31789.2.diff] refines the approach a little bit and adjusts
 the filter docs for core style:

 * Docs: summary updated: what is filterable, not why
 * Docs: removes the justification, e.g. "allows you to do X because of X",
 as every use case is different
 * Docs: Remove the `@return` (unused in hook docs)
 * Simplifies the code by just passing an empty array to the filter
 * Simplify setting the current theme as the first key (since we know it's
 an array).

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Ticket URL: <https://core.trac.wordpress.org/ticket/31789#comment:6>
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