WordPress/wp-includes
Felix Arntz 2a57dd7f86 Editor: Avoid running certain logic around theme.json parsing unnecessarily for classic themes.
Here's what it does:
* Do not load and parse `theme-i18n.json` schema if the theme does not have a `theme.json` file.
* Fix the variable caching layer around the theme's `theme.json` parsing so that a parent's theme `theme.json` is cached as well.
* Do not run a `WP_Query` for global styles for a user when the theme does not have a `theme.json`.

In a basic WordPress setup, this changeset improves `wp_head` execution time for classic themes by 10%, and overall response time for both block themes and classic themes by 4%. This may seem like a small win, but 4% reduced overall response time is actually quite a bit for one change, and it is worth mentioning that this is just one of several other little performance tweaks which are being worked on to improve performance of `theme.json` parsing further.

Props flixos90, manuilov, oandregal, peterwilsoncc, spacedmonkey.
Fixes #56945.

Built from https://develop.svn.wordpress.org/trunk@54799


git-svn-id: http://core.svn.wordpress.org/trunk@54351 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-11-10 22:16:15 +00:00
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2022-10-31 20:40:10 +00:00