[wp-trac] [WordPress Trac] #31701: Emoji: Avoid enqueueing JS by default

[WordPress Trac]

#31701: Emoji: Avoid enqueueing JS by default
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 Reporter:  obenland      |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  4.2
Component:  General       |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:  emoji         |     Focuses:  javascript, performance
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Comment (by pento):

 [attachment:31701.diff] only loads the emoji JS files if they're needed
 (currently only works with `SCRIPT_DEBUG` set to `true`).

 Still to do:
 * Load the scripts from the correct URL (it's currently assuming that WP
 is in the root directory).
 * We've already detected browser emoji support once, we don't need to do
 it a second time in `wp-emoji.js`.
 * Combine `wp-emoji.js` and `twemoji.js` during the build process, so that
 we only need to load `wp-emoji.min.js`.
 * Figure out a nice way to build and maintain the minified version of the
 inline script.

 Anyway, this is a proof of concept. It looks like it might be a viable
 option.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31701#comment:5>
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