[wp-trac] [WordPress Trac] #63007: Bundled themes: Stylesheets for block themes are missing path data for inlining

[WordPress Trac]

#63007: Bundled themes: Stylesheets for block themes are missing path data for
inlining
---------------------------+-------------------------------
 Reporter:  westonruter    |       Owner:  westonruter
     Type:  enhancement    |      Status:  accepted
 Priority:  normal         |   Milestone:  6.9
Component:  Bundled Theme  |     Version:
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |     Focuses:  css, performance
---------------------------+-------------------------------

Comment (by westonruter):

 In [changeset:"60934" 60934]:
 {{{
 #!CommitTicketReference repository="" revision="60934"
 Bundled Themes: Introduce stylesheet minification for core block themes.

 This introduces a build process to provide minified stylesheets for the
 Twenty Twenty-Two and Twenty Twenty-Five themes. The built minified CSS is
 not committed to version control. When `SCRIPT_DEBUG` is disabled, the
 minified `style.min.css` file will be enqueued to improve performance,
 including reducing render-blocking resources as well as facilitating
 inlining. See #63007.

 * Stylesheets are minified via the new core `cssmin:themes` Grunt task,
 which is automatically run as part of `build:css`.
 * The same build process is added to the themes (via `package.json` and
 `package-lock.json`) with `build` and `watch` commands; the `postcss` and
 `cssnano` development dependencies are used to handle CSS minification.
 * The `functions.php` in each theme is updated to enqueue `style.min.css`
 unless `SCRIPT_DEBUG` is enabled, in which case `style.css` is enqueued.
 * A notice comment is added to `style.css` to warn against editing the
 stylesheet since the minified version will likely be served instead.
 * A new `contributing.txt` file is added to each theme to document the
 build process for developers.
 * The `test-and-zip-default-themes` GitHub workflow is updated to install
 npm dependencies and build the minified assets before packaging the
 themes.
 * New PHPUnit tests are added to verify version number consistency across
 `style.css`, `readme.txt`, `package.json`, and `package-lock.json` files
 in default themes.

 Developed in https://github.com/WordPress/wordpress-develop/pull/10081.

 Props b1ink0, westonruter, shyamgadde, jonsurrell, sabernhardt, jorbin,
 peterwilsoncc, poena.
 Fixes #63012.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/63007#comment:43>
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