[wp-trac] [WordPress Trac] #37110: Update to jQuery 3.*

[WordPress Trac]

#37110: Update to jQuery 3.*
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 Reporter:  jorbin                               |       Owner:  (none)
     Type:  task (blessed)                       |      Status:  reopened
 Priority:  normal                               |   Milestone:  5.5
Component:  External Libraries                   |     Version:
 Severity:  critical                             |  Resolution:
 Keywords:  early has-patch needs-testing        |     Focuses:  javascript
  needs-screenshots has-dev-note commit          |
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Comment (by apedog):

 @desrosj

 If my suggestion is to be given serious consideration, then:
 - a custom-wp {{{jquery-migrate}}}/{{{live}}}-polyfill that throws out
 deprecation notes would only need to be maintained for one cycle.
 - deprecation/doing_it_wrong notices could be made to print only if
 {{{WP_DEBUG}}} is set to true. Same as PHP does. Thereby only targeting
 plugin devs.
 - console.log deprecation notices will have a ''MUCH'' wider reach than
 dev- and release-notes. Every single dev will get a chance to see them for
 an entire cycle. Not on the web - but in their console!
 - An entire cycle with the deprecation notes (perhaps even with a 5.6
 deadline explicitly mentioned in every log) is more likely to reduce the
 burden of non-complying plugins. Hopefully, auto-updates will be adopted
 more widely by then - reducing the risk of breakage even further. Plugins
 can take their time complying.
 - I understand the wish of developers (the majority of decision-makers) to
 work with modern architecture/tools. Therefore the "bandaid" analogy.
 Clunky jQuery 1.9 must go. But it doesn't have to be a bandaid. It can be
 a careful transition.

 I'm immensely impressed by the care the auto-updates team has taken to
 facilitate as smooth a transition as possible and as little breakage as
 possible. Would love to see the same happen here.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37110#comment:154>
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