[wp-trac] [WordPress Trac] #57487: Add support for "development mode"

[WordPress Trac]

#57487: Add support for "development mode"
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 Reporter:  azaozz                      |       Owner:  flixos90
     Type:  enhancement                 |      Status:  assigned
 Priority:  normal                      |   Milestone:  6.3
Component:  General                     |     Version:
 Severity:  normal                      |  Resolution:
 Keywords:  needs-unit-tests has-patch  |     Focuses:
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Comment (by azaozz):

 Replying to [comment:18 flixos90]:
 > I've implemented this in a first pass in https://github.com/WordPress
 /wordpress-develop/pull/4565.

 Thanks! The PR looks good imho perhaps with exception of the
 `wp_development_mode` filter (that filters the constant). This type of
 filters don't seem to be working particularly well and thinking it would
 be better without them.

 Also seems it would be good to set `WP_DEBUG`, `WP_DEBUG_DISPLAY`, (maybe
 `WP_DEBUG_LOG` if the  `WP_DEBUG_DISPLAY` is off), `SCRIPT_DEBUG`, etc.
 when development mode is on. I'll comment on the PR.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57487#comment:19>
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